Lithium ion battery negative electrode material grinding device
Technical Field
The utility model relates to the technical field of material grinding, in particular to a lithium ion battery negative electrode material grinding device.
Background
The main components of the lithium battery cathode material are graphite and the like, and when the lithium battery cathode is produced, the raw materials such as graphite and the like are required to be subjected to processes such as crushing and grinding, screening, mixing, roasting, forming and the like, so that a lithium ion battery cathode material grinding device is required.
For example, chinese patent publication No. CN213193974U discloses a grinding device for grinding lithium ion battery cathode materials, wherein the middle part of the upper end of a grinding device shell is connected with a feed inlet, the inner connection of the grinding device shell is respectively provided with a grinding chamber, the two sides of the upper end of the grinding device shell are respectively connected with a first motor, the graphene is fed into the grinding chamber by a material dividing plate, the grinding chamber is faster and more accurate, two groups of grinding devices are arranged for grinding simultaneously, the efficiency is higher, the arc-shaped bulges are arranged, the graphene can fall onto the grinding device in a concentrated manner when being rotationally ground in the grinding chamber, the contact frequency of the graphene and a grinding blade is improved, the grinding effect and the efficiency are simultaneously improved, the heat of the graphene is radiated from a heat radiating large pipe by the wind of a fan, the heat of discharged graphene powder is prevented from falling too high, the next processing work is facilitated, and the whole grinding, grinding and discharging process flow is smooth and efficient.
Although the above examples can grind the graphite after grinding the graphite by the separate grinding knife, the added graphite cannot be completely ground to the required particle size by a single grinding, so that the graphite with difficult thickness is mixed together after the grinding of the graphite is completed, and the graphite needs to be ground again as a whole, so that certain use inconvenience exists, meanwhile, the space in the grinding bin is large, and when the grinding roller applies force to the graphite, the graphite is easy to slide to the side surface of the grinding roller, so that certain use inconvenience exists.
Disclosure of utility model
The utility model provides a lithium ion battery cathode material grinding device, which aims to solve the problems in the background technology.
In order to solve the technical problems, the utility model adopts the following technical scheme:
The utility model provides a lithium ion battery negative pole material grinder, includes the support frame, the top fixedly connected with of support frame screens out the mechanism, the top fixedly connected with feeder hopper of screening out the mechanism, the upper end fixedly connected with grinding mechanism of screening out mechanism inner chamber, the bottom fixedly connected with return mechanism of screening out mechanism one end inner chamber.
The screening mechanism comprises a fixed shell, wherein the bottom of the fixed shell is fixedly connected with the top of a supporting frame, a discharge hole is formed in one side of the lower end of an inner cavity of the fixed shell, a stop block is fixedly connected to the bottom of the inner cavity of the fixed shell, a guide plate is fixedly connected to the middle of the inner cavity of the fixed shell, a clamping block is arranged below the guide plate, and a sieve plate is lapped on the surface of the clamping block.
The technical scheme of the utility model is further improved in that a screen is arranged in the screen plate, the bottom of one end of the screen plate is overlapped with the top of the stop block, and the surface of the screen plate is fixedly connected with a tremble generator.
The grinding mechanism comprises a gear box, wherein the back surface of a fixed shell on one side of the gear box is fixedly connected with a first motor, the middle of a rotating shaft of the first motor is fixedly connected with a gear, one end of the rotating shaft of the first motor is fixedly connected with a first grinding roller, the surface of the gear is meshed with a gear rod, and one end of the gear rod is fixedly connected with a second grinding roller.
The technical scheme of the utility model is further improved in that the top of the inner cavity of the fixed shell is fixedly connected with a grinding bin, the top of the grinding bin is fixedly connected with a feed inlet, a grinding cavity is arranged in the grinding bin, the top of the inner cavity of the feed inlet is communicated with the bottom of the inner cavity of the feed hopper, and discharge cavities are formed in two sides of the inner cavity of the grinding cavity.
The technical scheme of the utility model is further improved in that the backflow mechanism comprises a backflow pipe, the bottom of the backflow pipe is fixedly connected with the bottom of the inner cavity of the fixed shell, one side of the bottom of the inner cavity of the backflow pipe is fixedly connected with a backflow port, one side of the inner cavity of the backflow port is communicated with one side of the inner cavity of the fixed shell, the top of the backflow pipe is fixedly connected with a motor II, the surface of a rotating shaft of the motor II is fixedly connected with a helical blade, and one side of the top of the inner cavity of the backflow pipe is fixedly connected with a discharge pipe.
By adopting the technical scheme, compared with the prior art, the utility model has the following technical progress:
The utility model provides a lithium ion battery cathode material grinding device, which is characterized in that after graphite is ground for a single time, a screen is driven by a vibration generator to vibrate to screen the ground graphite, the graphite which is not required to be fine is discharged from a discharge port through the screen, and enters a return pipe along the return port under the action of the screen flow guide, so that the graphite returns to a grinding cavity for grinding again until the fine is qualified, the integral re-grinding of the graphite is avoided after primary grinding, the grinding efficiency is higher, the grinding cavity in a grinding bin is arranged to be matched with the shape height of a grinding roller, the graphite cannot escape from the pressure applied by the grinding roller when the grinding roller grinds the graphite, the grinding efficiency is higher, and the grinding device is more convenient to use.
Drawings
FIG. 1 is a schematic diagram of a front view of the present utility model;
FIG. 2 is a schematic cross-sectional view of the present utility model;
FIG. 3 is a schematic cross-sectional view of the grinding chamber of the present utility model;
FIG. 4 is a schematic view of a part of the grinding mechanism according to the present utility model;
fig. 5 is a schematic structural view of a reflow mechanism of the present utility model.
The device comprises a support frame 1, a screening mechanism 2, a fixed shell 21, a guide plate 22, a discharge hole 23, a stop block 24, a guide plate 25, a clamping block 26, a sieve plate 27, a sieve plate 28, a tremble generator 3, a feed hopper 4, a grinding mechanism 41, a gear box 42, a motor I43, a gear 44, a grinding roller I45, a gear rod 46, a grinding roller II 47, a grinding bin 48, a feed inlet 49, a grinding cavity 410, a discharge cavity 5, a reflux mechanism 51, a reflux pipe 52, a reflux hole 53, a motor II 54, a spiral blade 55 and a discharge pipe.
Detailed Description
The utility model is further illustrated by the following examples:
Example 1
As shown in fig. 1-5, the utility model provides a lithium ion battery cathode material grinding device, which comprises a supporting frame 1, wherein the top of the supporting frame 1 is fixedly connected with a screening mechanism 2, the top of the screening mechanism 2 is fixedly connected with a feed hopper 3, the upper end of an inner cavity of the screening mechanism 2 is fixedly connected with a grinding mechanism 4, the bottom of an inner cavity of one end of the screening mechanism 2 is fixedly connected with a reflux mechanism 5, the screening mechanism 2 comprises a fixed shell 21, the bottom of the fixed shell 21 is fixedly connected with the top of the supporting frame 1, one side of the lower end of the inner cavity of the fixed shell 21 is provided with a discharge hole 22, the bottom of the inner cavity of the fixed shell 21 is fixedly connected with a stop block 23, the middle of the inner cavity of the fixed shell 21 is fixedly connected with a guide plate 24, a clamping block 25 is arranged below the guide plate 24, the surface of the clamping block 25 is lapped with a sieve 26, the inner part of the sieve 26 is provided with a sieve 27, the bottom of one end of the sieve 26 is lapped with the top of the stop block 23, and the surface of the sieve 26 is fixedly connected with a tremble generator 28.
In this embodiment, the ground graphite falls from the discharge cavity 410 to the surface of the baffle 24, under the action of the baffle 24, the graphite falls to the surface of the screen 27, under the action of the tremble generator 28, the screen 26 drives the screen 27 to vibrate, the graphite is screened out, the graphite with qualified fineness is discharged along the discharge hole 22 under the action of the stop block 23 after passing through the screen, and the graphite with unqualified fineness enters the return pipe 51 along the return hole 52 under the action of the guide of the screen 26.
Example 2
On the basis of the embodiment 1, as shown in fig. 1-5, the utility model provides a technical scheme that preferably, the grinding mechanism 4 comprises a gear box 41, one side of the gear box 41 is fixedly connected with the back of a fixed shell 21, the back of the gear box 41 is fixedly connected with a first motor 42, the middle part of the rotating shaft of the first motor 42 is fixedly connected with a gear 43, one end of the rotating shaft of the first motor 42 is fixedly connected with a first grinding roller 44, the surface of the gear 43 is meshed with a gear rod 45, one end of the gear rod 45 is fixedly connected with a second grinding roller 46, the top of the inner cavity of the fixed shell 21 is fixedly connected with a grinding bin 47, the top of the grinding bin 47 is fixedly connected with a feed inlet 48, a grinding cavity 49 is arranged in the grinding bin 47, the top of the inner cavity of the feed inlet 48 is communicated with the bottom of the inner cavity of the feed hopper 3, and two sides of the inner cavity of the grinding cavity 49 are provided with discharge cavities 410.
In this embodiment, graphite is placed into the feeding hopper 3, then enters the grinding cavity 49 from the feeding hole 48 under the action of gravity of the graphite, the first grinding roller 44 rotates under the action of the first motor 42, the gear 43 drives the gear rod 45 to rotate the second grinding roller 46, the graphite is ground under the action of the two groups of grinding rollers, and the grinding cavity 49 with the shape height matched with the grinding rollers is arranged, so that the graphite is not easy to escape from the pressure applied by the grinding rollers, and the grinding efficiency is higher.
Example 3
On the basis of the embodiment 1, as shown in fig. 1-5, the utility model provides a technical scheme that preferably, the reflux mechanism 5 comprises a reflux pipe 51, the bottom of the reflux pipe 51 is fixedly connected with the bottom of the inner cavity of the fixed shell 21, one side of the bottom of the inner cavity of the reflux pipe 51 is fixedly connected with a reflux port 52, one side of the inner cavity of the reflux port 52 is communicated with one side of the inner cavity of the fixed shell 21, the top of the reflux pipe 51 is fixedly connected with a motor II 53, the surface of a rotating shaft of the motor II 53 is fixedly connected with a spiral blade 54, and one side of the top of the inner cavity of the reflux pipe 51 is fixedly connected with a discharge pipe 55.
In this embodiment, the graphite is discharged from the discharge pipe 55 along the return pipe 51 by rotating the spiral vane 54 under the action of the second motor 53, and is fed into the grinding chamber 49 from the feed hopper 3 again, and re-ground until the graphite can penetrate the screen 27, so that the grinding efficiency is higher and the use is more convenient.
The working principle of the lithium ion battery cathode material grinding device is specifically described below.
As shown in fig. 1-5, when grinding graphite, the graphite is placed into the feed hopper 3, then under the action of gravity of the graphite, the graphite enters the grinding cavity 49 from the feed inlet 48, the grinding roller one 44 is rotated under the action of the motor one 42, the gear 43 drives the gear rod 45 to enable the grinding roller two 46 to rotate, under the action of the two groups of grinding rollers, the graphite is ground, the grinding cavity 49 with the shape being matched with the grinding rollers is arranged, so that the graphite is not easy to escape from the pressure applied by the grinding rollers, the grinding efficiency is higher, the ground graphite falls onto the surface of the guide plate 24 from the discharge cavity 410, under the action of the guide plate 24, the graphite falls onto the surface of the screen 27, under the action of the tremble generator 28, the screen 26 drives the screen 27 to shake, the graphite is screened out, after passing through the screen, the graphite with qualified fineness is discharged along the discharge outlet 22 under the action of the stop block 23, the graphite with unqualified fineness is enabled to enter the return pipe 51 along the return hole 52 under the action of the guide of the two groups of the grinding rollers, the blade 54 is enabled to fall into the return pipe 51 along the guide hole 53, the spiral blade is enabled to pass through the return pipe 55 again, and the grinding efficiency is enabled to enter the screen 27 from the guide pipe to be more convenient to grind the feed hopper, and the ground graphite can be discharged from the feed hopper 3 again.
The foregoing utility model has been generally described in great detail, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, it is intended to cover modifications or improvements within the spirit of the inventive concepts.