CN219150719U

CN219150719U - Graphite sieving mechanism for lithium cell negative pole

Info

Publication number: CN219150719U
Application number: CN202320005354.XU
Authority: CN
Inventors: 裴国军; 王海旭
Original assignee: Tianhongji Technology Shenzhen Co ltd
Current assignee: Tianhongji Technology Shenzhen Co ltd
Priority date: 2023-01-03
Filing date: 2023-01-03
Publication date: 2023-06-09
Anticipated expiration: 2033-01-03

Abstract

The utility model relates to the technical field of lithium battery production and processing, in particular to a graphite screening device for a lithium battery cathode, which comprises a screening box, a screening cavity arranged in the screening box, a feed inlet arranged at the top end of the screening cavity, a screen plate obliquely arranged at the upper part of the screening cavity and used for driving a vibration driving component adopted by the screen plate to vibrate, wherein the feed inlet is arranged close to the topmost end of the screen plate, a baffle plate is vertically arranged at the lower part of the screening cavity, the lower part of the screening cavity is divided into a large particle area and a small particle area in sequence from left to right by the baffle plate, a funnel and an iron removing component are arranged in the small particle area, the large opening end of the funnel is arranged right opposite to the screen hole of the screen plate, and the iron removing component is arranged right below the small opening end of the funnel; the utility model not only can screen large graphite particles and small graphite particles, but also can effectively remove scrap iron mixed in the small graphite particles, thereby reducing the production cost of the lithium battery and shortening the production period of the lithium battery.

Description

Graphite sieving mechanism for lithium cell negative pole

Technical Field

The utility model relates to the technical field of lithium battery production and processing, in particular to a graphite screening device for a lithium battery cathode.

Background

Graphite used for the negative electrode of the lithium battery is required to be manufactured by graphite particles with uniform texture and uniform size, so that the graphite is required to be screened by a screening device before production so as to meet the manufacturing requirement of the lithium battery.

The current chinese patent of authorizing the bulletin number CN217289276U discloses a graphite sieving mechanism for lithium cell negative pole, including defeated feed cylinder, the inside stoving separating mechanism that is provided with of defeated feed cylinder, driving motor fixed connection is at defeated feed cylinder roof middle part, the driving motor output shaft runs through and rotates and connect defeated feed cylinder roof middle part, driving motor output shaft bottom fixedly connected with connecting rod, the inside fixedly connected with heating rod of connecting rod, connecting rod periphery fixedly connected with conveying board. According to the graphite screening device, the driving motor and the heating rod are started, the output shaft of the driving motor rotates to enable the connecting rod and the material conveying plate to rotate, so that graphite on the material conveying plate is conveyed to the lower side shell, the heating rod dries the graphite in the conveying process, meanwhile, graphite adhered together is separated under the action of centrifugal force, and screening efficiency of the graphite screening device is greatly improved.

However, in practical application, the scheme has the following problems: because there is tiny iron fillings in the graphite granule, above-mentioned scheme can screen out big graphite granule and little graphite granule, but the iron fillings that mix in the little graphite granule can't get rid of, makes little graphite granule after the screening still need deironing equipment to carry out deironing just can use, has increased lithium cell's manufacturing cost, has still prolonged lithium cell's production cycle.

Disclosure of Invention

The utility model aims to overcome the defects, and provides the graphite screening device for the lithium battery cathode, which not only can screen large graphite particles and small graphite particles, but also can effectively remove scrap iron mixed in the small graphite particles, thereby reducing the production cost of the lithium battery and shortening the production period of the lithium battery.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a graphite sieving mechanism for lithium cell negative pole, includes the sieving box, set up in sieving chamber in the sieving box, set up in the feed inlet on sieving chamber top, the upper portion slope in sieving chamber is provided with the sieve, is used for the drive vibration drive assembly that the sieve vibration adopted, the feed inlet is close to the topmost setting of sieve, the vertical baffle that is provided with in lower part in sieving chamber, the baffle will sieving chamber lower part from left to right divides into large granule district and granule district in proper order, granule district is provided with funnel and deironing subassembly, the large mouth end of funnel just is just to the sieve mesh setting of sieve, the mouth end of funnel sets up downwards, deironing subassembly set up in under the mouth end of funnel.

Further, the vibration driving assembly comprises a plurality of fixing seats fixed on the inner wall of the screening cavity, a vibration motor arranged in the fixing seats, and the output end of the vibration motor is in driving connection with the screen plate.

Further, the iron removal assembly comprises an iron removal seat fixed on the inner wall of the small particle area, an iron removal motor arranged in the iron removal seat, and a cylindrical electromagnet which is arranged right below the small opening end of the funnel is connected in a driving manner after an output shaft of the iron removal motor horizontally penetrates out of the iron removal seat.

Further, the included angle between the sieve plate and the horizontal plane is an angle.

Further, the upper portion of sieve is screening portion, the lower part of sieve is the guide portion, the sieve mesh set up in screening portion, the least significant end of guide portion extends to directly over the large granule district.

Further, one side of the large particle area and one side of the small particle area are respectively provided with a first discharge opening and a second discharge opening.

The beneficial effects of the utility model are as follows:

in practical application, graphite particles to be screened are injected into the screening cavity through the feed inlet, when the graphite particles fall onto the screen plate, the vibration driving assembly drives the screen plate to vibrate, so that large graphite particles roll to a large particle area along the screen plate, small graphite particles fall into the funnel through the sieve holes on the screen plate and fall onto the iron removing assembly from the small opening end of the funnel, scrap iron in the small graphite particles is removed through the iron removing assembly, and the small graphite particles after iron removal are accumulated in the small particle area; the utility model not only can screen large graphite particles and small graphite particles, but also can effectively remove scrap iron mixed in the small graphite particles, thereby reducing the production cost of the lithium battery and shortening the production period of the lithium battery.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

fig. 2 is a schematic view of the structure of the screen plate in the present utility model;

reference numerals: a screening box 1; a feed inlet 11; a large particle zone 12; discharge port one 121; a small particle area 13; a second discharge port 131; a screen plate 2; a screen hole 21; a vibration driving assembly 3; a separator 4; a funnel 5; an iron removal assembly 6; iron removal seat 61; iron removal motor 62; a cylindrical electromagnet 63.

Detailed Description

As shown in fig. 1 and 2, a graphite sieving mechanism for lithium cell negative pole, including screening case 1, set up in screening chamber in screening case 1, set up in the feed inlet 11 on screening chamber top, screening chamber's upper portion slope is provided with sieve 2 for the drive vibration drive assembly 3 that sieve 2 vibration adopted, feed inlet 11 is close to the topmost setting of sieve 2, screening chamber's lower part is vertical to be provided with baffle 4, baffle 4 will screening chamber lower part divides into large granule district 12 and small granule district 13 in proper order from left to right, small granule district 13 is provided with funnel 5 and deironing subassembly 6, funnel 5's large mouth end is just to sieve mesh 21 setting of sieve 2, funnel 5's small mouth end sets up downwards, deironing subassembly 6 set up in funnel 5 small mouth end under.

When the device is used, graphite particles to be screened are injected into a screening cavity through a feed inlet 11, when the graphite particles fall onto a screen plate 2, a vibration driving assembly 3 drives the screen plate 2 to vibrate, so that large graphite particles roll to a large particle area 12 along the screen plate 2, small graphite particles fall into a funnel 5 through a sieve hole 21 on the screen plate 2 and fall onto an iron removing assembly 6 from the small opening end of the funnel 5, scrap iron in the small graphite particles is removed through the iron removing assembly 6, and the small graphite particles after iron removal are accumulated in a small particle area 13; the utility model not only can screen large graphite particles and small graphite particles, but also can effectively remove scrap iron mixed in the small graphite particles, thereby reducing the production cost of the lithium battery and shortening the production period of the lithium battery.

As shown in fig. 1 and 2, the vibration driving assembly 3 includes a plurality of fixing seats fixed on the inner wall of the screening cavity, and a vibration motor disposed in the fixing seats, and an output end of the vibration motor is in driving connection with the screen plate 2; in this embodiment, the screen plate 2 is driven to vibrate by the vibrating motor, so as to assist the graphite particles on the screen plate 2 to pass through the sieve holes 21 or roll along the screen plate 2.

As shown in fig. 1 and 2, the iron removing assembly 6 includes an iron removing seat 61 fixed on the inner wall of the small particle area 13, and an iron removing motor 62 disposed in the iron removing seat 61, wherein an output shaft of the iron removing motor 62 horizontally penetrates out of the iron removing seat 61 and is in driving connection with a cylindrical electromagnet 63, and the cylindrical electromagnet 63 is disposed under the small mouth end of the funnel 5; in this embodiment, when small graphite particles fall onto the cylindrical magnet 63 from the small opening end of the hopper 5, the iron pieces are sucked by the cylindrical magnet 63, and the iron pieces and the graphite particles can be separated.

As shown in fig. 1 and 2, the included angle between the sieve plate 2 and the horizontal plane is 15 degrees; in this embodiment, when the included angle between the screen plate 2 and the horizontal plane is 15 °, the graphite particles roll along the upper surface of the screen plate 2.

As shown in fig. 1 and 2, the upper part of the screen plate 2 is a screening part, the lower part of the screen plate 2 is a guiding part, the screen holes 21 are arranged on the screening part, and the lowest end of the guiding part extends to the position right above the large particle area 12; in this embodiment, large graphite particles are guided to the large particle area 12 by the guide portion through the screening of the screen holes 21 of the screening portion.

As shown in fig. 1 and 2, one sides of the large granule area 12 and the small granule area 13 are respectively provided with a first discharge outlet 121 and a second discharge outlet 131; in this embodiment, large graphite particles in the large particle area 12 can be taken out through the first discharge port 121; small graphite particles in the small particle area 13 can be taken out through the discharge outlet II 131.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the scope of the utility model as defined in the accompanying claims.

Claims

1. Graphite sieving mechanism for lithium cell negative pole, its characterized in that: including screening case (1), set up in screening chamber in screening case (1), set up in feed inlet (11) on screening chamber top, screening chamber's upper portion slope is provided with sieve (2), is used for the drive vibration drive assembly (3) that sieve (2) vibration adopted, feed inlet (11) are close to the topmost setting of sieve (2), screening chamber's lower part is vertical to be provided with baffle (4), baffle (4) will screening chamber lower part divides into large granule district (12) and granule district (13) from left to right in proper order, granule district (13) are provided with funnel (5) and deironing subassembly (6), the large mouth end of funnel (5) is just right sieve mesh (21) setting of sieve (2), the tip of funnel (5) sets up downwards, deironing subassembly (6) set up in under the tip of funnel (5).

2. The graphite screening device for negative electrodes of lithium batteries according to claim 1, wherein: the vibration driving assembly (3) comprises a plurality of fixing seats fixed on the inner wall of the screening cavity, a vibration motor arranged in the fixing seats, and the output end of the vibration motor is in driving connection with the screen plate (2).

3. The graphite screening device for negative electrodes of lithium batteries according to claim 1, wherein: the iron removal assembly (6) comprises an iron removal seat (61) fixed on the inner wall of the small particle area (13), an iron removal motor (62) arranged in the iron removal seat (61), a cylindrical electromagnet (63) is connected to the output shaft of the iron removal motor (62) in a driving mode after horizontally penetrating out of the iron removal seat (61), and the cylindrical electromagnet (63) is arranged under the small opening end of the funnel (5).

4. The graphite screening device for negative electrodes of lithium batteries according to claim 1, wherein: the included angle between the sieve plate (2) and the horizontal plane is 15 degrees.

5. The graphite screening device for negative electrodes of lithium batteries according to claim 1, wherein: the upper portion of sieve (2) is screening portion, the lower part of sieve (2) is leading and connects the portion, sieve mesh (21) set up in screening portion, lead the extreme that connects the portion to extend to directly over large granule district (12).

6. The graphite screening device for negative electrodes of lithium batteries according to claim 1, wherein: one side of the large particle area (12) and one side of the small particle area (13) are respectively provided with a first discharge hole (121) and a second discharge hole (131).