Graphite cathode screening device for lithium battery

Abstract

The utility model belongs to the technical field of lithium battery production and processing, and particularly relates to a graphite cathode screening device for a lithium battery. The device comprises a material screening bin, a screen structure arranged in the material screening bin, a vibration structure arranged at the side end of the material screening bin and an adsorption structure arranged at the side end of the material screening bin. The adsorption structure comprises a hollow box body connected with the screening bin, a channel arranged at the side end, close to the box body, of the screening bin, communicated with the box body and located at the upper end of the screen structure, and an adsorption rod body rotationally arranged in the box body and penetrating through the channel to enter the screening bin. Through the arrangement of the material screening bin, the vibration structure and the adsorption structure, raw materials of target specifications can be screened out, magnetic substances in the raw materials can be removed, the removal rate of the magnetic substances can reach 95% or above, and the magnetic material screening device has the advantages of being high in automation degree, high in working efficiency and high in practicability.

Description

TECHNICAL FIELD

[0001] The utility model belongs to lithium battery production processing technical field, concretely relates to a graphite negative electrode screening device for lithium battery. BACKGROUND

[0002] As a kind of excellent performance electric conductor, graphite negative electrode material has wide application in lithium ion production, and in the production process of graphite negative electrode, the crushed graphite negative electrode material needs to be screened, and the larger particles in larger graphite negative electrode material are screened out to improve the production quality of graphite negative electrode material.

[0003] The document with authorized announcement number CN217250703U discloses a mixed batch screening equipment for processing lithium battery graphite negative electrode material, which comprises a feeding end, a screening device, a channel, a finished product tank and a connecting layer: the feeding end is embedded in the top end of the screening device, the channel and the lower end of the screening device are integrated, the channel is communicated with the finished product tank, and the connecting layer is fixedly connected with the lower end edge of the screening device through the finished product tank. The screening device is provided with a reinforcing body, a adsorber, a limiting block, a screening end and a guide hole. The inner side of the reinforcing body is provided with the adsorber, the upper and lower ends of the adsorber are fixedly connected with the limiting block, the limiting block is communicated with the screening end, and the guide hole is embedded in the lower end of the screening end.

[0004] The working principle of the screening device in the device is as follows: the adsorber is positioned at the side of the screening end, so that the adsorber can guide and adsorb the magnetic substances of the screening end in the process of screening the negative electrode material and various raw materials, to prevent the magnetic substances from entering the finished product tank with the raw materials. The cleaning block can scrape off the adsorbed magnetic substances.

[0005] However, the device still has the following problems: the adsorber is located on both sides, and the magnetic substances in the middle of the raw materials are far away from the adsorber, so the adsorber cannot adsorb the magnetic substances in the middle of the raw materials. Utility model content

[0006] In view of the above problems, the utility model aims at providing a graphite negative electrode screening device for lithium battery, which can not only screen the target specification of raw materials, but also remove the magnetic substances in the raw materials. The removal rate of magnetic substances can reach more than 95%, and the device has the advantages of high automation degree, high work efficiency and strong practicability.

[0007] In order to achieve the above purpose, the technical scheme of the utility model is as follows:

[0008] The utility model provides a kind of graphite negative electrode screening device for lithium battery, including screening bin, screen structure being arranged in the screening bin, vibration structure being arranged in the side end of the screening bin, and adsorption structure being arranged in the side end of the screening bin;The adsorption structure includes the box body being connected with the screening bin and being hollow inside, the passage being arranged on the side end of the screening bin close to the box body, being communicated with the box body and being located on the upper end of the screen structure, and the adsorption stick body being rotatably arranged in the box body and passing through the passage to enter the screening bin.

[0009] As a further preferred embodiment of the utility model, the adsorption stick body includes a rotating main body arranged in the box, a fixed tube arranged on the side end of the rotating main body, and a magnetic rod arranged in the fixed tube.

[0010] As a further preferred embodiment of the utility model, the box is provided with a driving structure for driving the rotation of the rotating main body, comprising: a shaft body one arranged on the inner wall of the box and connected with the rotating main body, and a motor one arranged on the box and used for driving the rotation of the shaft body one.

[0011] As a further preferred embodiment of the utility model, the box is provided with a cleaning structure, comprising: a shaft body two arranged on the inner wall of the box, perpendicular to the shaft body one and located on the lower side of the rotating main body, and a brush arranged on the shaft body two.

[0012] As a further preferred embodiment of the utility model, the cleaning structure further comprises a bevel gear one arranged on one side of the shaft body one close to the shaft body two, and a bevel gear two arranged on the end of the shaft body two and engaged with the bevel gear one.

[0013] As a further preferred embodiment of the utility model, the adsorption structure comprises a collection box arranged at the lower end of the box, and a discharge port arranged on the lower surface of the box and communicated with the collection box.

[0014] As a further preferred embodiment of the utility model, the bottom surface of the box is inclined, and the lower side is located at the discharge port.

[0015] As a further preferred embodiment of the utility model, the adsorption stick body further comprises a setting port arranged on the end of the fixed tube away from the rotating main body, and a blocking block arranged at the setting port.

[0016] As a further preferred embodiment of the utility model, the setting port is provided with an internal thread, and the blocking block comprises a block body and an external thread column arranged on the block body and matched with the internal thread.

[0017] As a further preferred embodiment of the utility model, the number of adsorption structures is two, and they are symmetrically distributed on both sides of the screening bin.

[0018] The utility model discloses the beneficial effect is as follows:

[0019] The screening device provided by the utility model, through the setting of adsorption structure, can not only achieve the purpose of adsorbing magnetic material in raw materials, but also the adsorption structure can cover the whole screen structure, there is no adsorption dead angle, and has the advantage of good screening effect.

[0020] The screening device provided by the utility model, through the cooperation of driving structure and cleaning structure, can clean and collect the magnetic material adsorbed on the adsorption structure, and guarantee the continuous working capacity of the adsorption structure. DRAWINGS

[0021] DRAWINGS Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0022] DRAWINGS Figure 2 It is the structure schematic diagram of the utility model.

[0023] DRAWINGS Figure 3 It is the local structure schematic diagram of the utility model box and screening bin junction.

[0024] DRAWINGS Figure 4 It is the local structure schematic diagram of the utility model adsorption stick body.

[0025] DRAWINGS Figure 5 It is a kind of local structure schematic diagram of the utility model.

[0026] DRAWINGS Figure 6 It is another local structure schematic diagram of the utility model. DRAWINGS

[0028] Screening bin 1, screen structure 2, vibration structure 3, adsorption structure 4;

[0029] Upper bin body 11, lower bin body 12, upper connecting ring 13, lower connecting ring 14, connecting bolt 15, cover body 16, handle 17;

[0030] Fixed ring 21, screen 22, mounting ring 23;

[0031] Connecting plate 31, vibration motor 32;

[0032] Box 41, passage 42, adsorption stick body 43, collection box 44, discharge port 45;

[0033] Rotary main body 431, fixed pipe 432, magnetic bar 433, inlet 434, plugging block 435;

[0034] Block 435a, outer threaded column 435b;

[0035] Shaft 1 51, Motor 1 52, Shaft 3 53, Pulley 1 54, Pulley 2 55, Transmission Belt 56, Fixing Frame 57;

[0036] Shaft 2 61, brush bristles 62, bevel gear 1 63, bevel gear 2 64. Detailed Implementation

[0037] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0039] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] Example 1

[0041] This embodiment provides a graphite anode screening device for lithium batteries, as shown in the attached diagram. Figure 1 ~Appendix Figure 4 As shown, it includes a screening bin 1, a screen structure 2 disposed in the screening bin 1, a vibration structure 3 disposed on the side of the screening bin 1, and an adsorption structure 4 disposed on the side of the screening bin 1.

[0042] In the embodiment, the screening bin 1 is preferably a barrel with a circular cross section, and specifically comprises an upper bin body 11 and a lower bin body 12, the upper bin body 11 and the lower bin body 12 are sealingly connected, and the upper bin body 11 and the lower bin body 12 are respectively provided with an upper connecting ring 13 and a lower connecting ring 14 near the connecting position, the upper connecting ring 13 and the lower connecting ring 14 are connected by connecting bolts 15, and the connecting bolts 15 can be further provided with buffer springs to ensure that the device has good stability and buffering effect under the working of the vibration structure 3. Further, the upper end of the upper bin body 11 is further provided with a cover body 16, the cover body 16 is used to close the opening at the upper end of the upper bin body 11, so as to ensure that the device is in a sealed state during the screening process, thereby avoiding pollution of the environment; the cover body 16 is provided with a handle 17 for easy operation.

[0043] In the embodiment, the screen structure 2 is preferably detachably connected with the screening bin 1, and specifically with the upper bin body 11. The detachable connection can adopt any structure known in the art, and one of the structures is exemplified in the embodiment: the screen structure 2 comprises a fixed ring 21 attached to the inner wall of the upper bin body 11, a screen 22 installed in the fixed ring 21, and an installation ring 23 fixedly arranged on the inner wall of the upper bin body 11, the installation ring 23 can support the fixed ring 21 to achieve the effect of installing the screen structure 2.

[0044] In the embodiment, the number of the vibration structure 3 is two, and the vibration structure 3 is symmetrically installed on both sides of the screening bin 1, and each vibration structure 3 comprises a connecting plate 31 connected with the side wall of the screening bin 1 and a vibration motor 32 connected with the connecting plate 31. The vibration motor 32 transmits vibration to the inside of the screening bin 1 through the connecting plate 31, so as to promote the vibration of the whole screen structure 2. Preferably, the height of the connecting plate 31 is equivalent to the height of the screen structure 2, so as to ensure the effective transmission of vibration.

[0045] In the embodiment, the adsorption structure 4 comprises a box body 41 connected with the screening bin 1 and hollow inside, a passage 42 arranged on the side end of the screening bin 1 close to the box body 41, in communication with the box body 41 and located at the upper end of the screen structure 2, and an adsorption rod 43 rotatably arranged in the box body 41 and passing through the passage 42 to enter the screening bin 1. The size of the passage 42 is designed to ensure that it does not affect the rotation path of the adsorption rod 43. In order to avoid the adsorption rod 43 affecting the screening raw materials on the screen structure 2, the upper surface of the fixed ring 21 is higher than the upper surface of the screen 22, so as to ensure that the screening raw materials are separated from the screen 22 and enter the passage 42. The adsorption rod 43 is a column, and the column has an attractive force for attracting magnetic substances, so as to separate the magnetic substances from the target substances in the screening raw materials.

[0046] More preferably, the adsorption rod 43 includes a rotating body 431 disposed within the housing 41, a fixed tube 432 disposed on the side end of the rotating body 431, and a magnetic rod 433 disposed within the fixed tube 432. The rotating body 431 is located near the channel 42 within the housing 41. The fixed tube 432 drives the magnetic rod 433 to rotate with the rotating body 431, allowing it to pass through the channel 42 into the screening bin 1 and adsorb magnetic materials on the screening structure 2. The magnetic rod 433 can be a permanent magnet or an electromagnet, ensuring sufficient magnetic attraction.

[0047] In this embodiment, the housing 41 is provided with a drive structure for driving the rotating body 431 to rotate, including: a shaft 51 disposed on the inner wall of the housing 41 and connected to the rotating body 431, and a motor 52 disposed on the housing 41 and used to drive the shaft 51 to rotate. Specifically, in order to ensure that the shaft 51 is as close as possible to the channel 42, there is not enough space to install the motor 52 directly connected to the shaft 51. Therefore, the shaft 51 is directly rotatably connected to the inner top wall of the housing 41. A shaft 53 parallel to the shaft 51 is also rotatably mounted on the inner top wall of the housing 41. The shaft 53 passes through the housing 41 and is connected to the output shaft of the external motor 52. A pulley 54 is disposed on the shaft 51, and a pulley 55 is disposed on the shaft 53. The pulley 54 and the pulley 55 are connected by a transmission belt 56. In addition, in order to ensure the stability of motor 52, a mounting bracket 57 for fixing motor 52 is provided on housing 41.

[0048] It is worth noting that in order to ensure that the rotation path of the adsorption rod 43 can cover the screen structure 2, the rotation radius of the adsorption rod 43 is equivalent to the diameter of the screen structure 2. Therefore, the size of the box 41 also needs to have space to accommodate the adsorption rod 43.

[0049] Furthermore, to avoid the enclosure 41 being too large, as shown in the attached... Figure 5 As shown, this device preferably has two adsorption structures 4, symmetrically distributed on both sides of the sieve bin 1. At this time, the rotation radius of the adsorption rod 43 is equivalent to the radius of the sieve structure 2. The two opposing adsorption rods 43 rotate respectively, covering two areas of the sieve structure 2, thus achieving the desired effect. This method can reduce the size of a single box 41, reducing space occupation.

[0050] Furthermore, as shown in the appendix Figure 6 As shown, in order to improve the screening efficiency of the adsorption rod 43, the number of fixed tubes 432 is at least two, which are symmetrically installed on both sides of the rotating body 431 to ensure the frequency of the adsorption rod 43 entering the screening bin 1, thereby improving the screening efficiency.

[0051] The working principle of the screening device provided by the embodiment is as follows: raw materials are input from the upper end of the screening bin 1 to the upper end of the screen structure 2, the vibration structure 3 is started to vibrate the screen structure 2, so as to promote the distribution of the raw materials on the screen structure 2 and promote the screening effect; at the same time, the motor one 52 is started to drive the adsorption rod body 43 to rotate, the adsorption rod body 43 enters the screening bin 1 from the box body 41 through the channel 42 and passes through the upper end of the screen structure 2, under the action of the magnetic attraction, the magnetic materials in the raw materials are adsorbed by the adsorption rod body 43 and taken away from the screening bin 1 into the box body 41, so as to achieve the purpose of removing the magnetic materials in the raw materials.

[0052] Embodiment 2

[0053] The embodiment is based on the structure optimization of the embodiment 1, and the specific embodiments are as follows:

[0054] The box body 41 is provided with a cleaning structure, which includes a shaft body two 61 provided on the inner wall of the box body 41 and perpendicular to the shaft body one 51 and located below the rotating main body 431, and a brush 62 provided on the shaft body two 61. Wherein, the shaft body two 61 is connected with the power structure to drive the shaft body two 61 to rotate.

[0055] Further preferably, the cleaning structure further includes a conical gear one 63 provided on the side of the shaft body one 51 close to the shaft body two 61, and a conical gear two 64 provided on the end of the shaft body two 61 and meshed with the conical gear one 63. The advantage of such arrangement is that the number of power structures can be reduced, thereby reducing the cost.

[0056] The working principle of the screening device provided by the embodiment is as follows: when the shaft body one 51 rotates, the conical gear one 63 drives the conical gear two 64 to rotate, thereby driving the shaft body two 61 to rotate, and further driving the brush 62 to rotate. The brush 62 contacts the lower surface of the adsorption rod body 43 during rotation, thereby scraping off the magnetic materials adsorbed on the adsorption rod body 43.

[0057] Embodiment 3

[0058] The embodiment is based on the structure optimization of the embodiment 1 or the embodiment 2, and the specific embodiments are as follows:

[0059] The adsorption structure 4 comprises a collecting box 44 arranged at the lower end of the box body 41, and a discharge port 45 arranged on the lower surface of the box body 41 and communicated with the collecting box 44. Further preferably, the bottom surface of the box body 41 is arranged to be inclined, and the lower side is located at the discharge port 45. By arranging the bottom surface of the box body 41 to be inclined, the magnetic substances falling on the bottom surface of the box body 41 can be discharged from the discharge port 45 to the collecting box 44 under the action of gravity to complete the collection of the magnetic substances, so that the magnetic substances are not re-adsorbed by the adsorption rod body 43, and the cleaning efficiency is affected.

[0060] Embodiment 4

[0061] This embodiment is based on the structure optimization of Embodiment 1 or Embodiment 2 or Embodiment 3, and the specific implementation is as follows:

[0062] The adsorption rod body 43 further comprises a placing port 434 arranged on the end of the fixed tube 432 away from the rotating main body 431, and a blocking block 435 arranged at the placing port 434. Further, the placing port 434 is arranged with an internal thread, and the blocking block 435 comprises a block body 435a and an external thread column 435b arranged on the block body 435a and matched with the internal thread. The advantage of such arrangement is that the replacement of the magnetic rod 433 is facilitated.

[0063] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A graphite anode screening device for lithium batteries, characterized in that: The device includes a screening bin (1), a screen structure (2) disposed in the screening bin (1), a vibration structure (3) disposed on the side of the screening bin (1), and an adsorption structure (4) disposed on the side of the screening bin (1). The adsorption structure (4) includes a box (41) connected to the screening bin (1) and hollow inside, a channel (42) disposed on the side of the screening bin (1) near the box (41), communicating with the box (41) and located at the upper end of the screen structure (2), and an adsorption rod (43) rotatably disposed in the box (41) and passing through the channel (42) to enter the screening bin (1).

2. The graphite anode screening device for lithium batteries according to claim 1, characterized in that: The adsorption rod (43) includes a rotating body (431) disposed in the box (41), a fixed tube (432) disposed on the side end of the rotating body (431), and a magnetic rod (433) disposed in the fixed tube (432).

3. The graphite anode screening device for lithium batteries according to claim 2, characterized in that: The housing (41) is provided with a drive structure for driving the rotating body (431) to rotate, including: a shaft (51) disposed on the inner wall of the housing (41) and connected to the rotating body (431), and a motor (52) disposed on the housing (41) and used to drive the shaft (51) to rotate.

4. The graphite anode screening device for lithium batteries according to claim 3, characterized in that: The box (41) is provided with a cleaning structure, including: a second shaft (61) disposed on the inner wall of the box (41), perpendicular to the first shaft (51) and located below the rotating body (431), and bristles (62) disposed on the second shaft (61).

5. The graphite anode screening device for lithium batteries according to claim 4, characterized in that: The clearing structure also includes a bevel gear one (63) disposed on the side of the shaft one (51) near the shaft two (61), and a bevel gear two (64) disposed on the end of the shaft two (61) and meshing with the bevel gear one (63).

6. The graphite anode screening device for lithium batteries according to claim 1, characterized in that: The adsorption structure (4) includes a collection box (44) disposed at the lower end of the box body (41) and a discharge port (45) disposed on the lower surface of the box body (41) and communicating with the collection box (44).

7. A graphite anode screening device for lithium batteries according to claim 6, characterized in that: The bottom surface of the box (41) is inclined, and the lower side is located at the discharge port (45).

8. The graphite anode screening device for lithium batteries according to claim 2, characterized in that: The adsorption rod (43) also includes an inlet (434) disposed at the end of the fixed tube (432) away from the rotating body (431), and a sealing block (435) disposed at the inlet (434).

9. A graphite anode screening device for lithium batteries according to claim 8, characterized in that: The inlet (434) is provided with an internal thread, and the sealing block (435) includes a block body (435a) and an external thread post (435b) provided on the block body (435a) and adapted to the internal thread.

10. A graphite anode screening device for lithium batteries according to claim 1, characterized in that: The adsorption structure (4) consists of two structures, which are symmetrically distributed on both sides of the sieve bin (1).

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