CN112657602A - Grinding device for isotropic composite lithium ion negative electrode material - Google Patents
Grinding device for isotropic composite lithium ion negative electrode material Download PDFInfo
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- CN112657602A CN112657602A CN202011432138.0A CN202011432138A CN112657602A CN 112657602 A CN112657602 A CN 112657602A CN 202011432138 A CN202011432138 A CN 202011432138A CN 112657602 A CN112657602 A CN 112657602A
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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
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Abstract
The invention relates to the technical field of grinding tools, in particular to a grinding device for an isotropic composite lithium ion negative electrode material, which comprises a shell; the multistage grinding mechanisms are fixed inside the shell and distributed along the shell from top to bottom, each stage of grinding mechanism comprises a grinding roller, a support frame and a sieve tray, the grinding roller and the sieve tray are matched for grinding the negative electrode material, and the sieve tray is connected with the shell through a vibrating and screening assembly; the moving mechanism is used for driving the rolling roller to move from one side of the sieve tray to the other side; a take-up pan; the pushing mechanism is fixed on the side wall of the receiving disc and used for pushing the negative electrode material to be discharged from the first discharging port or the second discharging port; the invention provides a grinding device for an isotropic composite type lithium ion negative electrode material, which can grind the negative electrode material into different particle sizes at one time and meet the requirements of raw materials with different particle sizes in the battery preparation process.
Description
Technical Field
The invention relates to the technical field of grinding tools, in particular to a grinding device for an isotropic composite lithium ion negative electrode material.
Background
The lithium battery material mainly comprises the following components: the cathode material, the anode material, the diaphragm and the electrolyte. Among the most commonly used materials for the positive electrode are lithium cobaltate, lithium manganate, lithium iron phosphate and ternary materials. Among the negative electrode materials, the current negative electrode materials are mainly natural graphite and artificial graphite. Natural graphite, which is naturally formed in nature, generally appears as graphite schists, graphite flake gneiss, graphite-containing schists, metamorphic shale and other ores, and artificial graphite is all graphite materials obtained by organic carbonization and graphitization high-temperature treatment and can be called as artificial graphite, such as carbon fiber, pyrolytic carbon, foam graphite and the like; however, both natural graphite and artificial graphite need to be ground into small particles before being used;
graphite is a cathode material which is widely applied at present and has a relatively mature technology, and occupies a special position in the manufacture of lithium ion batteries, particularly, artificial graphite is used as a raw material, various processes in the production of the cathode material are mature, and the graphite is used as the cathode material and mainly comprises the links of crushing, granulation, graphitization, screening and the like, wherein the granulation is grinding to generate new graphite particles, and the size of the new graphite particles has a great influence on various performance indexes of the cathode material.
Disclosure of Invention
The invention aims to provide a grinding device for an isotropic composite type lithium ion negative electrode material, which can grind the negative electrode material into different particle sizes at one time and meet the requirements of raw materials with different particle sizes in the battery preparation process.
In order to achieve the above object, the technical solution of the present invention is as follows.
An apparatus for grinding an isotropic composite type lithium ion negative electrode material, comprising:
a housing;
multistage grinding mechanism, multistage grinding mechanism all fixes inside the casing to distribute from last to down along the casing, every grade grinding mechanism all includes:
rolling a roller;
the supporting frame is used for supporting the rolling roller, and a rotating mechanism used for driving the rolling roller to rotate is fixed on the supporting frame;
the screening disc is positioned below the rolling roller and used for placing the negative electrode material, the rolling roller and the screening disc are matched for rolling the negative electrode material, and the screening disc is connected with the shell through a vibrating screening assembly; the diameters of sieve pores of a sieve tray of the multistage grinding mechanism are sequentially reduced from top to bottom for sieving negative electrode materials with different particle sizes;
the moving mechanism is fixed in the shell, connected with the supporting frame and used for driving the rolling roller to move from one side of the screening tray to the other side;
the receiving disc is positioned below the sieve disc, the lower surface of the receiving disc is provided with a material storage box which is connected with the material storage box in a sliding manner and used for storing the negative electrode material, the lower surface of the receiving disc is provided with a first material discharge port opposite to the sieve disc of the next-stage crushing mechanism, and the lower surface of the receiving disc is also provided with a second material discharge port opposite to the material storage box;
and the pushing mechanism is fixed on the side wall of the receiving disc and is used for pushing the negative electrode material to be discharged from the first discharging port or the second discharging port.
The vibratory screen assembly includes:
the four vertical plates are fixed on the four side surfaces of the screen disc and are matched with the screen disc to form a shell structure for placing a negative electrode material;
the two sliding blocks are symmetrically fixed on the two parallel vertical plate side walls;
the two first sliding chutes are longitudinally arranged on the inner side wall of the shell and are in sliding connection with the sliding block;
one end of the spring is fixed in the first sliding groove, and the other end of the spring is fixedly connected with the sliding block;
the outer shell of the supporting cylinder is fixed in the shell, and the telescopic end of the supporting cylinder is fixedly connected with the sliding block so as to drive the sliding block to move to the top end of the first sliding chute;
and the two vibrating motors are respectively fixed on the two vertical plates and are used for driving the sieve tray to vibrate.
The above-mentioned slewing mechanism includes:
the first rotating shaft penetrates through the center of the rolling roller and is fixedly connected with the rolling roller, and the left end and the right end of the first rotating shaft respectively penetrate through the supporting frame from the left side and the right side;
the first motor is fixed on the support frame and used for driving the first rotating shaft to rotate.
The moving mechanism includes:
the left end and the right end of the screw rod respectively penetrate through the shell from the left side and the right side and are connected with the shell through bearings;
the nut is in threaded connection with the screw, and the lower end of the nut is fixedly connected with the support frame;
the second sliding block is fixed at the upper end of the nut;
the polished rod is connected with the second sliding block in a sliding mode and is parallel to the screw rod, and the left end and the right end of the polished rod are fixedly connected with the shell;
and the second motor is fixedly connected with one end of the screw rod penetrating through the shell, and is fixed on the shell.
The pushing mechanism comprises:
the material pushing plate is positioned in the material receiving plate and simultaneously spans the whole material receiving plate;
the U-shaped side of the U-shaped connecting piece is positioned on the inner side of the material receiving disc and fixedly connected with the material pushing plate, and the other U-shaped side of the U-shaped connecting piece is positioned on the outer side of the material receiving disc;
the rack is fixed on the side face of the receiving disc opposite to the U-shaped connecting piece;
the gear is meshed with the rack, a rotating shaft penetrating through the gear is arranged in the center of the gear, one end of the rotating shaft is in sliding connection with the slot opening formed in the material receiving disc, and the other end of the rotating shaft penetrates through the U-shaped connecting piece;
and an output shaft of the third motor is connected with one end of the rotating shaft penetrating through the U-shaped connecting piece, and the third motor is fixed on the U-shaped connecting piece.
The material storage box is connected with the lower surface of the material receiving disc in a sliding mode through a sliding assembly; the sliding assembly includes:
the two sliding strips are respectively fixed on the left side and the right side of the storage box;
the second sliding grooves are fixed on the lower surface of the receiving tray, and each second sliding groove is connected with one sliding strip in a sliding mode.
One side of above-mentioned casing still is fixed with elementary grinding down the mechanism, and elementary grinding down the mechanism includes:
the primary crushing cavity is formed by fixedly connecting a semi-cylindrical cavity and a cuboid cavity fixed above the semi-cylindrical cavity, the primary crushing cavity is fixed above the shell, and a feeding hole is formed in the primary crushing cavity;
one end of the discharging pipe is fixedly connected with the primary grinding cavity, and the other end of the discharging pipe penetrates through the shell and is opposite to the sieve tray; a valve for controlling blanking is arranged in the middle of the blanking pipe;
a propeller located inside the primary grinding chamber;
the second rotating shaft penetrates through the center of the propeller, one end of the second rotating shaft penetrates through one side of the primary grinding cavity, and the other end of the second rotating shaft penetrates through the other side of the primary grinding cavity;
and the fourth motor is fixedly connected with the second rotating shaft and is fixed on the side wall of the primary grinding cavity.
The side face of the shell is hinged with a door body which is used for taking out the storage box at a position opposite to the storage box.
The invention has the beneficial effects that:
1. the invention provides a grinding device for isotropic compound type lithium ion negative electrode materials, which is characterized in that a plurality of stages of grinding mechanisms are sequentially fixed from top to bottom, each grinding mechanism is used for grinding negative electrode materials with different particle sizes, the negative electrode materials need to be ground into different particle sizes for use, the grinding device can grind the negative electrode materials into different particle sizes at one time to meet the use requirement, when the negative electrode materials are ground into particle sizes larger than that of a first-stage sieve tray by a first-stage grinding mechanism, the negative electrode materials can fall into a material receiving tray from the sieve tray, the negative electrode materials falling into the material receiving tray are the negative electrode materials with the particle size of A, a pushing mechanism pushes the negative electrode materials in the material receiving tray to enter the sieve tray of the grinding mechanism below the material receiving tray from a first discharge port, and the negative electrode materials entering the sieve tray of the lower grinding mechanism enter the negative electrode material of the next-stage grinding mechanism, the pushing mechanism pushes the negative electrode material in the material receiving disc to enter the storage box below the material receiving disc from the second material outlet, and the negative electrode material entering the storage box is stored to be convenient to use; the negative electrode material entering the sieve tray of the next stage grinding mechanism can grind the particle size of the negative electrode material to be B, wherein the particle size of B is smaller than that of A, and the steps are repeated, and a part of the negative electrode material with the particle size of B is stored in a storage box of the stage grinding mechanism for use.
2. According to the grinding device for the isotropic compound type lithium ion negative electrode material, the grinding roller is driven by the moving mechanism to grind the negative electrode material from left to right, the negative electrode material can be fully ground, meanwhile, the vibrating motor is arranged to drive the screen disc to vibrate, when the motor drives the screen disc to vibrate, the screen disc is in an un-pressed state by the aid of the supporting cylinder, the screen disc presses the spring downwards, the screen disc is driven to vibrate under the action of the vibrating motor, and the negative electrode material with the particle size smaller than the diameter of the screen disc after grinding can fall into the material receiving disc in time.
3. The grinding device for the isotropic composite type lithium ion negative electrode material is provided with a primary grinding mechanism, a large negative electrode material is ground into small negative electrode materials in a primary stage by using a propeller, and the small negative electrode materials can be fully ground after entering the grinding mechanism.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic side view of the grinding mechanism of the present invention.
FIG. 3 is a schematic view of the grinding mechanism of the present invention in front view.
Fig. 4 is a schematic structural diagram of the pushing mechanism of the present invention.
Description of reference numerals:
1. a housing; 2. rolling a roller; 3. a rotating shaft; 4. a support frame; 5. a first motor; 6. a sieve tray; 7. a take-up pan; 8. a vertical plate; 9. a slider; 10. a first chute; 11. a spring; 12. a support cylinder; 13. a vibration motor; 14. a screw; 15. a nut; 16. a second slider; 17. a polish rod; 18. a second motor; 19. a first discharge port; 20. a second discharge opening; 21. a material storage box; 22. a material pushing plate; 23. a U-shaped connecting piece; 24. a rack; 25. a gear; 26. a third motor; 27. a second chute; 28. a primary grinding chamber; 29. a discharging pipe; 30. a valve; 31. a propeller; 32. a second rotating shaft; 33. a fourth motor; 34. and (4) a slide bar.
Detailed Description
An embodiment of the present invention will be described in detail with reference to fig. 1 and 4, but it should be understood that the scope of the present invention is not limited by the embodiment.
As shown in fig. 1, an embodiment of the present invention provides a grinding apparatus for an isotropic composite lithium ion negative electrode material, including a housing 1; the multi-stage grinding mechanisms are fixed inside the shell 1 and distributed along the shell 1 from top to bottom, and each stage of grinding mechanism comprises a grinding roller 2; the supporting frame 4 is used for supporting the rolling roller 2, and a rotating mechanism used for driving the rolling roller 2 to rotate is fixed on the supporting frame 4; the screening disc 6 is positioned below the rolling roller 2 and used for placing the negative electrode material, the rolling roller 2 and the screening disc 6 are matched for rolling the negative electrode material, and the screening disc 6 is connected with the shell 1 through a vibrating screening assembly; the diameters of sieve pores of the sieve tray 6 of the multistage grinding mechanism are sequentially reduced from top to bottom for sieving the negative electrode materials with different particle sizes; the moving mechanism is fixed in the shell 1 and connected with the supporting frame 4 and is used for driving the rolling roller 2 to move from one side of the screening tray 6 to the other side; the receiving disc 7 is positioned below the sieve disc 6, the lower surface of the receiving disc is provided with a storage box 21 which is connected with the receiving disc in a sliding manner and used for storing the negative electrode material, the lower surface of the receiving disc 7 is provided with a first discharge port 19 opposite to the sieve disc 6 of the next-stage crushing mechanism, and the lower surface of the receiving disc is also provided with a second discharge port 20 opposite to the storage box 21; and the pushing mechanism is fixed on the side wall of the receiving disc 7 and used for pushing the negative electrode material to be discharged from the first discharging port 19 or the second discharging port 20.
The invention provides a grinding device for isotropic compound type lithium ion negative electrode materials, each grinding mechanism is used for grinding negative electrode materials with different particle sizes, the negative electrode materials are required to be ground into different particle sizes for use when a lithium battery is produced, the grinding device can realize that the negative electrode materials are ground into different particle sizes at one time to meet the use requirement, when the negative electrode materials are ground into larger particle sizes than a first-stage sieve tray 6 when the negative electrode materials are ground by a first-stage grinding mechanism, the negative electrode materials can fall into a material receiving tray 7 from the sieve tray 6, the negative electrode materials falling into the material receiving tray 7 are the negative electrode materials with the particle size A, at the moment, the pushing mechanism pushes the negative electrode materials in the material receiving tray 7 to enter the sieve tray 6 of a next-stage grinding mechanism below the material receiving tray from a first discharge port 19, the negative electrode materials entering the sieve tray 6 of the lower-stage grinding mechanism are the negative electrode materials entering the next-stage grinding mechanism, the negative electrode material in the material receiving disc is pushed by the pushing mechanism to enter the storage box 21 below the material receiving disc from the second discharge port 20, and the negative electrode material entering the storage box 21 is stored for use; the negative electrode material entering the sieve tray of the next stage grinding mechanism can grind the particle size of the negative electrode material to B, wherein the particle size of B is smaller than that of A, a part of the negative electrode material with the particle size of B is stored in a storage box of the next stage grinding mechanism for use, and the steps are repeated until the particle size is ground to meet the required particle size.
Further, the vibrating screen assembly comprises four vertical plates 8 which are fixed on four sides of the screen tray 6 and are matched with the screen tray 6 to form a shell structure for placing negative pole materials; the two sliding blocks 9 are symmetrically fixed on the side walls of the two parallel vertical plates 8; the two first sliding chutes 10 are longitudinally arranged on the inner side wall of the shell 1 and are in sliding connection with the sliding blocks 9; one end of the spring 11 is fixed inside the first sliding chute 10, and the other end of the spring is fixedly connected with the sliding block 9; the supporting cylinder 12 is fixed inside the shell 1, and the telescopic end of the supporting cylinder is fixedly connected with the sliding block 9, so that the sliding block 9 is driven to move to the top end of the first sliding chute 10; and the two vibrating motors 13 are respectively fixed on the two vertical plates 8 and are used for driving the sieve tray 6 to vibrate.
When the grinding roller 2 is matched with the sieve tray 6 to grind the negative electrode material for a period of time, part of the negative electrode material can be adhered on the sieve tray 6 to cause that the upper layer of the negative electrode material which meets the particle size can not fall off from the sieve tray 6, at the moment, the vibration screening mechanism must be started to enable the negative electrode material to timely fall off from sieve holes arranged on the sieve tray 6, when the negative electrode material is ground, the supporting cylinder 12 is utilized to support the connecting plate, so as to push the slide block 9 to move to the top end of the first chute 10, the negative electrode material which has the particle size smaller than the diameter of the sieve holes of the sieve tray 6 can fall off to the material receiving tray 7 after the grinding roller 2 is repeatedly ground, when the negative electrode material which meets the conditions directly falls off after being ground for a period of time, at the moment, the supporting cylinder 12 is started, the telescopic rod of the supporting cylinder 12 is retracted, the sieve tray 6 and the vertical plate 8 can, vibrating motor 13 drives sieve dish 6 and rocks, will stop grinding after grinding a period of time, utilizes vibrating motor 13 to drive sieve dish 6 and rocks, and inside sieve dish 6 dropped take-up (stock) 7 in time from sieve dish 6 that enables the negative pole material that the particle diameter is less than the sieve mesh, the material that drops at this moment in take-up (stock) 7 was exactly the negative pole material that the particle diameter is A.
Further, the rotating mechanism includes: the first rotating shaft 3 penetrates through the center of the rolling roller 2 and is fixedly connected with the rolling roller 2, and the left end and the right end of the first rotating shaft 3 respectively penetrate through the supporting frame 4 from the left side and the right side; and the first motor 5 is fixed on the support frame 4 and is used for driving the first rotating shaft 3 to rotate.
According to the invention, the rotating mechanism utilizes the first motor 5 to drive the first rotating shaft 3 to rotate, the first rotating shaft 3 drives the rolling roller 2 to rotate along with the first rotating shaft, the rolling roller 2 rotates to roll the negative electrode materials, and the moving mechanism also drives the rolling roller 2 to advance to roll the negative electrode materials at different positions of the sieve tray 6.
Further, the moving mechanism includes a screw 14, the left and right ends of which respectively penetrate the housing 1 from the left and right sides and are connected with the housing 1 through a bearing; the nut 15 is in threaded connection with the screw 14, and the lower end of the nut 15 is fixedly connected with the support frame 4; the second sliding block 16 is fixed at the upper end of the nut 15; a polish rod 17, which is connected with the second slide block 16 in a sliding manner, wherein the polish rod 17 is parallel to the screw 14, and the left end and the right end of the polish rod 17 are fixedly connected with the shell 1; and the second motor 18 is fixedly connected with one end of the screw 14 penetrating through the shell 1, and the second motor 18 is fixed on the shell 1.
In the invention, the moving mechanism drives the screw rod 14 to rotate through the second motor 18, the screw rod 14 rotates to drive the nut 15 to move forward, the nut 15 moves forward to drive the support frame 4 fixedly connected with the nut 15 to move forward, and meanwhile, in order to ensure that the nut 15 moves forward in the same direction, the polished rod 17 is arranged to ensure that the nut 15 moves forward in the same direction to avoid the deviation of the nut 15.
Further, the pushing mechanism comprises a material pushing plate 22 which is positioned inside the material receiving tray 7 and spans the whole material receiving tray 7; the U-shaped side of the U-shaped connecting piece 23 is positioned on the inner side of the material receiving disc 7 and fixedly connected with the material pushing plate 22, and the other U-shaped side of the U-shaped connecting piece 23 is positioned on the outer side of the material receiving disc 7; the rack 24 is fixed on the side surface of the receiving tray 7 opposite to the U-shaped connecting piece 23; the gear 25 is meshed with the rack 24, a rotating shaft penetrating through the gear 25 is arranged in the center of the gear 25, one end of the rotating shaft is in sliding connection with the slot opening formed in the material receiving disc 7, and the other end of the rotating shaft penetrates through the U-shaped connecting piece 23; and an output shaft of the third motor 26 is connected with one end of the rotating shaft passing through the U-shaped connecting piece 23, and the third motor 26 is fixed on the U-shaped connecting piece 23.
The lower surface of the receiving disc 7 is provided with a first discharge port 19 opposite to the screen disc 6 of the next-stage grinding mechanism, the lower surface of the receiving disc 7 is also provided with a second discharge port 20 opposite to the storage box 21, the pushing mechanism is used for pushing the negative electrode material in the receiving disc 7 to enter the screen disc 6 of the next-stage grinding mechanism below the receiving disc from the first discharge port 19, and the pushing mechanism is also used for pushing the negative electrode material in the receiving disc 7 to enter the storage box 21 from the second discharge port 20.
The specific pushing process is as follows, the third motor 26 of the pushing mechanism is started, the third motor 26 drives the gear 25 to rotate through the rotating shaft in the center of the gear 25, the gear 25 moves along the rack 24 while rotating, the rack 24 moves to drive the material pushing plate 22 to push the negative electrode material positioned inside the material receiving plate 7, the gear 25 moves leftwards to drive the U-shaped connecting piece 23 to drive the material pushing plate 22 to push the negative electrode material leftwards, the negative electrode material is pushed leftwards to be discharged from the first discharge port 19 into the sieve tray 6 of the next crushing mechanism, the gear 25 moves rightwards to drive the U-shaped connecting piece 23 to drive the material pushing plate 22 to push the negative electrode material rightwards, the negative electrode material is pushed rightwards to be discharged from the second discharge port 20 into the material storage box 21 positioned below the gear, and the negative electrode material with the particle.
Further, the material storage box 21 is connected with the lower surface of the material receiving tray 7 in a sliding manner through a sliding assembly; the sliding assembly comprises two sliding strips 34, and the two sliding strips 34 are respectively fixed on the left side and the right side of the storage box 21; the second sliding chutes 27 are fixed on the lower surface of the receiving tray 7, and each second sliding chute 27 is slidably connected with one of the sliding bars 34.
Further, the side of the shell 1 is hinged with a door body for taking out the storage box 21 at a position opposite to the storage box 21.
The storage box 21 is connected with the lower surface of the material receiving plate 7 in a sliding mode through the sliding assembly, when the storage box 21 needs to be taken out, the door body hinged to the side face of the shell 1 is opened, the storage box 21 is pulled out of the lower surface of the material receiving plate 7, and the storage box is convenient to use.
Further, a primary grinding mechanism is fixed on one side of the shell 1, the primary grinding mechanism comprises a primary grinding cavity 28, the primary grinding cavity is formed by fixedly connecting a semi-cylindrical cavity and a cuboid cavity fixed above the semi-cylindrical cavity, the primary grinding cavity 28 is fixed above the shell 1, and a feeding hole is formed in the primary grinding cavity 28; a discharge pipe 29, one end of which is fixedly connected with the primary grinding chamber 28 and the other end of which penetrates through the shell 1 and faces the sieve tray 6; a valve 30 for controlling the blanking is arranged in the middle of the blanking pipe 29; a propeller 31 located inside the primary grinding chamber 28; a second rotating shaft 32 penetrating the center of the propeller 31, and one end of the second rotating shaft 32 penetrates one side of the primary grinding chamber 28 and the other end of the second rotating shaft 32 penetrates the other side of the primary grinding chamber 28; a fourth motor 33 fixedly connected to said second shaft 32 and the fourth motor 33 is fixed to the side wall of said primary grinding chamber 28.
The invention is also provided with a primary grinding cavity 28 which can primarily grind the negative electrode materials so as to grind the negative electrode materials with different sizes into the negative electrode materials with approximately same specifications, when in use, the negative electrode materials are poured in from a feeding hole on the primary grinding cavity, at the moment, a fourth motor 33 is started, the fourth motor 33 drives a propeller 31 to rotate, the propeller 31 rotates to grind the large negative electrode materials in the primary grinding cavity into small negative electrode materials, at the moment, a discharging pipe 29 is opened, and the small negative electrode materials ground into small pieces enter the shell 1 from the discharging pipe 29.
The working principle is as follows:
in the grinding device using the isotropic compound type lithium ion negative electrode material, the negative electrode material is firstly ground by a primary grinding mechanism, when in use, the negative electrode material is poured from a feeding hole on a primary grinding cavity, at the moment, a fourth motor 33 is started, the fourth motor 33 drives a propeller 31 to rotate, the propeller 31 rotates to grind the large negative electrode material in the primary grinding cavity into small negative electrode materials, at the moment, a discharging pipe 29 is opened, and the small negative electrode materials ground into small blocks enter the shell 1 from the discharging pipe 29;
for example, a three-stage grinding mechanism is fixed inside the shell 1, the three-stage grinding mechanism is sequentially fixed with a first-stage grinding mechanism, a second-stage grinding mechanism and a third-stage grinding mechanism from top to bottom, a discharging pipe 29 firstly enters the first-stage grinding mechanism from the shell 1, the discharging pipe 29 is over against a sieve tray 6 of the first-stage grinding mechanism, the sieve tray 6 is connected with the shell 1 through a vibration screening component, the vibration screening component comprises four vertical plates 8, the four vertical plates 8 are used as four side plates of the sieve tray 6 and fixedly connected with the sieve tray 6, the sieve tray 6 is used as a bottom plate, the sieve tray 6 is matched with the vertical plates 8 to form a shell structure, a negative electrode material is placed in the shell, and the negative electrode material is placed;
at this time, a second motor 18 of the moving mechanism is started, the second motor 18 drives a screw rod 14 to rotate, the screw rod 14 rotates to drive a nut 15 to move left and right along the screw rod, the nut 15 drives a sliding block 9 to slide along a polished rod 17 in the process of moving along the screw rod 14, the nut 15 is fixedly connected with a supporting frame 4, the nut 15 drives a rolling roller 2 to move from one side of a sieve tray 6 to the other side through the supporting frame 4, the rolling roller 2 is matched with the sieve tray 6 for rolling a negative electrode material, when the negative electrode material is rolled, a supporting cylinder 12 is used for supporting a connecting plate, so that the sliding block 9 is pushed to move to the top end of a first sliding chute 10, the negative electrode material with the particle size smaller than the sieve pore diameter of the sieve tray after being repeatedly rolled by the rolling roller 2 falls to a receiving tray 7, when the negative electrode material meeting the conditions directly falls after, sieve dish 6 and slider 9 can push down spring 11 under the effect of gravity, at this moment sieve dish 6 is in free state, restart fixes vibrating motor 13 on the riser, vibrating motor 13 drives sieve dish 6 and rocks, will stop grinding after grinding a period, utilize vibrating motor 13 to drive sieve dish 6 and rock, inside negative pole material that enables the particle diameter and be less than the sieve mesh in time falls take-up (stock) pan 7 from the sieve dish, the material that drops at this moment in take-up (stock) pan 7 is exactly the negative pole material that the particle diameter is A.
Then, a third motor 26 of the pushing mechanism is started, the third motor 26 drives a gear 25 to rotate through a rotating shaft at the center of the gear 25, the gear 25 moves along a rack 24 while rotating, the rack 24 moves to drive a material pushing plate 22 to push the negative electrode material positioned in a material receiving plate 7, the gear 25 moves leftwards to drive a U-shaped connecting piece 23 to drive the material pushing plate 22 to push the negative electrode material leftwards, the negative electrode material is pushed leftwards to be discharged from a first discharge port 19 and enter a sieve tray 6 of the next crushing mechanism, the gear 25 moves rightwards to drive the U-shaped connecting piece 23 to drive the material pushing plate 22 to push the negative electrode material rightwards, the negative electrode material is pushed rightwards to enter a storage box 21 positioned below the negative electrode material from a second discharge port 20, the negative electrode material with the particle size of A is stored in the storage box 21, the negative electrode material with the particle size of A enters the sieve tray 6 of the next crushing mechanism, the grinding step is repeated, the negative electrode materials with the particle size B are stored in the material receiving disc 7 of the second-stage grinding mechanism, the steps are repeated again, the negative electrode materials with the particle size B enter the third-stage grinding mechanism to be ground into the negative electrode materials with the particle size C, the negative electrode materials with the particle size C are stored in the material receiving disc 7 of the third-stage grinding mechanism, the third stage is the last-stage grinding mechanism, the material receiving disc 7 of the third-stage grinding mechanism is only provided with one material discharging opening, and therefore the negative electrode materials with the particle size A, the particle size B and the particle size C are completely prepared.
The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (8)
1. An apparatus for grinding an isotropic composite lithium ion negative electrode material, comprising:
a housing (1);
multistage grinding mechanism, multistage grinding mechanism all fix inside casing (1) to distribute from last to down along casing (1), every grade grinding mechanism all includes:
a rolling roller (2);
the supporting frame (4) is used for supporting the rolling roller (2), and a rotating mechanism used for driving the rolling roller (2) to rotate is fixed on the supporting frame (4);
the screening disc (6) is positioned below the rolling roller (2) and used for placing the negative electrode material, the rolling roller (2) is matched with the screening disc (6) and used for rolling the negative electrode material, and the screening disc (6) is connected with the shell (1) through a vibrating screening component; the diameters of sieve pores of the sieve tray (6) of the multi-stage crushing mechanism are sequentially reduced from top to bottom for sieving the negative electrode materials with different particle sizes;
the moving mechanism is fixed in the shell (1), connected with the supporting frame (4) and used for driving the rolling roller (2) to move from one side of the screening tray (6) to the other side;
the receiving disc (7) is positioned below the sieve disc (6), the lower surface of the receiving disc is provided with a storage box (21) which is connected with the receiving disc in a sliding manner and used for storing negative materials, the lower surface of the receiving disc (7) is provided with a first discharge port (19) which is opposite to the sieve disc (6) of the next-stage crushing mechanism, and the lower surface of the receiving disc is also provided with a second discharge port (20) which is opposite to the storage box (21);
and the pushing mechanism is fixed on the side wall of the receiving disc (7) and is used for pushing the negative electrode material to be discharged from the first discharging port (19) or the second discharging port (20).
2. The grinding apparatus for isotropic composite lithium ion negative electrode material according to claim 1, wherein the vibrating screen assembly comprises:
the four vertical plates (8) are fixed on the four side surfaces of the screen tray (6) and are matched with the screen tray (6) to form a shell structure for placing negative pole materials;
the two sliding blocks (9) are symmetrically fixed on the side walls of the two parallel vertical plates (8);
the two first sliding chutes (10) are longitudinally arranged on the inner side wall of the shell (1) and are in sliding connection with the sliding block (9);
one end of the spring (11) is fixed inside the first sliding groove (10), and the other end of the spring is fixedly connected with the sliding block (9);
the outer shell of the supporting cylinder (12) is fixed inside the shell (1), and the telescopic end of the supporting cylinder is fixedly connected with the sliding block (9), so that the sliding block (9) is driven to move to the top end of the first sliding groove (10);
and the two vibrating motors (13) are respectively fixed on the two vertical plates (8) and are used for driving the sieve tray (6) to vibrate.
3. The grinding apparatus for an isotropic composite type lithium ion negative electrode material according to claim 1, wherein the rotation mechanism comprises:
the first rotating shaft (3) penetrates through the center of the rolling roller (2) and is fixedly connected with the rolling roller (2), and the left end and the right end of the first rotating shaft (3) respectively penetrate through the supporting frame (4) from the left side and the right side;
and the first motor (5) is fixed on the support frame (4) and is used for driving the first rotating shaft (3) to rotate.
4. The grinding apparatus for an isotropic composite type lithium ion negative electrode material according to claim 1, wherein the moving mechanism includes:
a screw (14) which has left and right ends penetrating through the housing (1) from the left and right sides, respectively, and is connected to the housing (1) through a bearing;
the nut (15) is in threaded connection with the screw (14), and the lower end of the nut (15) is fixedly connected with the support frame (4);
the second sliding block (16) is fixed at the upper end of the nut (15);
the polish rod (17) is connected with the second sliding block (16) in a sliding mode, the polish rod (17) is parallel to the screw rod (14), and the left end and the right end of the polish rod (17) are fixedly connected with the shell (1);
the second motor (18) is fixedly connected with one end of the screw (14) penetrating through the shell (1), and the second motor (18) is fixed on the shell (1).
5. The grinding apparatus for an isotropic composite type lithium ion negative electrode material according to claim 1, wherein the pushing mechanism comprises:
the material pushing plate (22) is positioned inside the material receiving plate (7) and stretches across the whole material receiving plate (7);
the U-shaped side of the U-shaped connecting piece (23) is positioned on the inner side of the material receiving disc (7) and is fixedly connected with the material pushing plate (22), and the other U-shaped side of the U-shaped connecting piece (23) is positioned on the outer side of the material receiving disc (7);
the rack (24) is fixed on the side surface of the receiving tray (7) opposite to the U-shaped connecting piece (23);
the gear (25) is meshed with the rack (24), a rotating shaft penetrating through the gear (25) is arranged in the center of the gear, one end of the rotating shaft is in sliding connection with the slot opening formed in the material receiving disc (7), and the other end of the rotating shaft penetrates through the U-shaped connecting piece (23);
and an output shaft of the third motor (26) is connected with one end of the rotating shaft penetrating through the U-shaped connecting piece (23), and the third motor (26) is fixed on the U-shaped connecting piece (23).
6. The grinding device for the isotropic composite type lithium ion negative electrode material according to claim 1, wherein the storage box (21) is slidably connected with the lower surface of the receiving tray (7) through a sliding assembly; the sliding assembly includes:
the two sliding strips (34), the two sliding strips (34) are respectively fixed on the left side and the right side of the storage box (21);
the second sliding chutes (27) are fixed on the lower surface of the receiving tray (7), and each second sliding chute (27) is connected with one sliding strip (34) in a sliding mode.
7. The grinding apparatus for an isotropic composite type lithium ion negative electrode material according to claim 1, wherein a primary grinding mechanism is further fixed to one side of the case (1), and the primary grinding mechanism comprises:
the primary grinding cavity (28) is formed by fixedly connecting a semi-cylindrical cavity and a cuboid cavity fixed above the semi-cylindrical cavity, the primary grinding cavity (28) is fixed above the shell (1), and a feeding hole is formed in the primary grinding cavity (28);
a discharge pipe (29), one end of which is fixedly connected with the primary grinding cavity (28) and the other end of which penetrates through the shell (1) and is opposite to the sieve tray (6); a valve (30) for controlling blanking is arranged in the middle of the blanking pipe (29);
-a propeller (31) inside said primary grinding chamber (28);
a second rotating shaft (32) penetrating through the center of the propeller (31), wherein one end of the second rotating shaft (32) penetrates through one side of the primary grinding cavity (28), and the other end of the second rotating shaft (32) penetrates through the other side of the primary grinding cavity (28);
a fourth motor (33) fixedly connected with the second rotating shaft (32), and the fourth motor (33) is fixed on the side wall of the primary grinding chamber (28).
8. The grinding device for the isotropic composite type lithium ion negative electrode material according to claim 1, wherein a door for taking out the storage box (21) is hinged at a position opposite to the storage box (21) on the side of the housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011432138.0A CN112657602A (en) | 2020-12-08 | 2020-12-08 | Grinding device for isotropic composite lithium ion negative electrode material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011432138.0A CN112657602A (en) | 2020-12-08 | 2020-12-08 | Grinding device for isotropic composite lithium ion negative electrode material |
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| CN112657602A true CN112657602A (en) | 2021-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011432138.0A Pending CN112657602A (en) | 2020-12-08 | 2020-12-08 | Grinding device for isotropic composite lithium ion negative electrode material |
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| CN113426518A (en) * | 2021-06-28 | 2021-09-24 | 黄河科技学院 | Solid raw material crushing apparatus for chemical machinery |
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Application publication date: 20210416 |