CN217417481U

CN217417481U - Charging machine for graphitizing battery material and feeding pipe assembly thereof

Info

Publication number: CN217417481U
Application number: CN202221206826.XU
Authority: CN
Inventors: 丁明雷; 吴磊; 李新义; 朱晨军
Original assignee: Anhui Keda Lithium Battery Equipment Co ltd
Current assignee: Anhui Keda New Energy Equipment Co ltd
Priority date: 2022-05-19
Filing date: 2022-05-19
Publication date: 2022-09-13
Anticipated expiration: 2032-05-19

Abstract

The utility model discloses a charger for graphitizing battery material and conveying pipe assembly thereof belongs to lithium cell negative electrode material processing technology field. The utility model provides a feeding pipe subassembly of charger for battery material graphitization, include: the blanking pipe comprises an outer shell and an inner cylinder, the outer shell and the inner cylinder form an interlayer, and the surface of the inner cylinder is provided with an air hole communicated with the inner cavity of the blanking pipe and the interlayer; the outer shell is provided with an air suction port and a back flushing port; one end of the air suction port is communicated with the interlayer, and the other end of the air suction port is used for connecting a negative pressure air source; one end of the back flushing port is communicated with the interlayer, and the other end of the back flushing port is used for connecting a positive pressure air source; the utility model also provides a charger for battery material graphitization, including feed bin, spiral blanking machine, the spiral blanking machine has adopted foretell pay-off pipe assembly. The utility model discloses can prevent to leak the material when changing the crucible, avoid the raise dust.

Description

Charging machine for graphitizing battery material and feeding pipe assembly thereof

Technical Field

The utility model relates to a lithium cell negative electrode material handles technical field, and specifically speaking relates to a charger for battery material graphitization and pay-off pipe assembly thereof.

Background

With the rise of new energy automobiles, the demand of the negative electrode material of the power battery is increasing day by day, and the artificial graphite accounts for nearly 85% of the negative electrode material. In the production process of the artificial graphite cathode material, the production cost of a graphitization procedure accounts for more than 50% of the total cost, and the charging amount and the charging speed of a graphitization crucible become important factors influencing the graphitization cost and the production progress. The traditional graphitized crucible charging mode mostly adopts manual charging, and has the defects of strong labor, low production efficiency and insufficient charging.

In recent two years, enterprises adopt automatic charging devices to charge graphitized crucibles, in order to meet production requirements, the automatic charging devices are often required to charge a plurality of crucibles, and after charging of each crucible is completed, the crucible needs to be replaced in time so that the next crucible can be charged in time; the existing automatic charging device generally adopts a spiral or valve direct discharging mode, and when a crucible is replaced, the device adopting the spiral discharging mode has the conditions that a discharging opening cannot be closed and materials leak; the device adopting the mode of directly discharging by a valve switch can lead to free powder discharging, the discharging speed can not be controlled, and a large amount of raised dust is generated.

Disclosure of Invention

1. Technical problem to be solved by the utility model

To at least some problems that exist among the above prior art, the utility model provides a battery material graphitization is with feeder's pay-off pipe assembly, its aim at solve current battery material graphitization and use charging devices when changing the crucible, the easy problem of lou material of feed opening.

In addition, the utility model also provides a battery material is charger for graphitization, its aim at solve current charger in the problem that the powder escaped outward and leads to the raise dust of charging process.

2. Technical scheme

In order to achieve the above object, the utility model provides a battery material graphitization is with conveying pipe assembly of charger, include: the blanking pipe comprises an outer shell and an inner cylinder, wherein the outer shell and the inner cylinder form an interlayer, and the surface of the inner cylinder is provided with an air hole for communicating the inner cavity of the blanking pipe with the interlayer; the outer shell is provided with an air suction port and a back flushing port; one end of the air suction port is communicated with the interlayer, and the other end of the air suction port is used for connecting a negative pressure air source; one end of the back flushing port is communicated with the interlayer, and the other end of the back flushing port is used for being connected with a positive pressure air source.

Further, interior barrel includes from feed end to last cartridge filter, sleeve pipe and the lower cartridge filter that the discharge end set up in order, set up the gas pocket on last cartridge filter and the lower cartridge filter.

Furthermore, the air suction port and the back flushing port are arranged on the outer shell and correspond to the length range of the upper filter cartridge.

Furthermore, the upper filter cartridge and the lower filter cartridge are both made of metal sintering nets.

Furthermore, the device also comprises a cylindrical sealing shell; the inlet end of the sealing shell is hermetically communicated with the discharge end of the blanking pipe, and the outlet end of the sealing shell is communicated with the crucible; and the sealing shell is provided with a dust suction port communicated with the inside and used for being connected with a negative pressure air source.

Furthermore, the outlet end of the sealing shell is horn-shaped, a sealing element is arranged on the connecting surface of the sealing shell and the crucible, and the sealing element is made of sponge or rubber.

The utility model also provides a charging machine for graphitizing the battery material, which comprises a storage bin and a spiral blanking machine; the spiral blanking machine comprises a spiral main shaft with spiral blades and a feeding pipe assembly, the storage bin is connected with the feeding end of the feeding pipe assembly, the spiral main shaft penetrates through the storage bin and extends into the feeding pipe assembly, the feeding pipe assembly adopts the feeding pipe assembly of the charging machine for battery material graphitization, and the discharge port of the storage bin is communicated with the feeding end of the blanking pipe in a sealing mode.

Furthermore, the spiral blanking machine also comprises a driving mechanism which is in driving connection with the spiral main shaft, and the driving mechanism is arranged at the top of the storage bin; and the spiral blade on the spiral main shaft extends to the position of the discharge end in the discharge pipe from the inside of the storage bin.

Further, the pitch of the helical blade on the helical main shaft is gradually reduced from the feeding end to the discharging end.

Further, the surface of the spiral blade is coated with a wear-resistant layer.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with existing well-known technique, have following beneficial effect:

(1) the utility model discloses a battery material graphitization is with feeder's pay-off pipe assembly, the induction port passes through the negative pressure air supply and toward bleeding outward after spiral unloading is ended, makes the interior negative pressure effect that forms of unloading pipe clamp layer to because the gas pocket aperture of interior barrel is less than the particle diameter of powder, so the air can freely pass through interior barrel, and the powder can't pass through, makes the powder adsorb in the mouth of pipe, prevents that the powder in the spiral from droing when trading the crucible, reaches the lock material effect, prevents that the feed opening from leaking the material. The blowback mouth blows to the feed pipe through positive pressure gas supply for the powder that adsorbs in the gas pocket of interior barrel blows off, obtains in time clearing up, and the life of extension interior barrel keeps the effect of negative pressure lock material.

(2) The utility model discloses a charging machine's conveying pipe subassembly for battery material graphitization, interior barrel sets up the gas pocket including the last cartridge filter that sets up in order, sleeve pipe and cartridge filter down on going up cartridge filter and the cartridge filter down, and sheathed tube global is inclosed, under the invariable condition of gas pressure of the negative pressure air supply through the induction port, the sheathed tube existence has reduced the lifting surface area of interior barrel in other words to make the suction pressure increase, the adsorbability to the powder of the interior barrel of unloading pipe has further been improved, prevent that the feed opening from leaking the material.

(3) The utility model discloses a battery material graphitization is with pay-off pipe assembly of charger, upper filter cartridge and lower filter cartridge are made for the metal sintering net, and the metal sintering net is made through processes such as special stromatolite suppression and vacuum sintering, has higher mechanical strength and whole rigid structure, and the mesh of its each layer silk screen is crisscross each other, forms homogeneous and ideal filtration; the device can reasonably match and design the pore size, permeability and strength characteristics of the material, so that the device has excellent filtering precision, filtering impedance, mechanical strength, wear resistance, heat resistance and processability, and is more suitable for being applied to the device compared with other types of filtering materials such as filter cloth, filter paper and the like, and the material locking effect on powder can be enhanced.

(4) The utility model discloses a charging machine's conveying pipe subassembly for battery material graphitization, sealed shell have increased the leakproofness of unloading between unloading pipe and the crucible, and in addition, the dust absorption mouth on the sealed shell pumps through the negative pressure air supply to the air in the sealed shell, can siphon away a small amount of raise dust, further increase the locking material effect of unloading pipe.

(5) The outlet end of the sealing shell of the feeding pipe component of the charging machine for graphitizing the battery material of the utility model is trumpet-shaped, which is convenient for the powder to fall into the crucible; the sealing shell is provided with a sealing element on the connecting surface with the crucible, so that the sealing property of the device can be improved, and the powdery battery material is prevented from entering the crucible and leaking outwards; sponge or rubber are common sealing element manufacturing materials, and are easy to obtain and low in maintenance cost.

(6) The utility model discloses a charger for battery material graphitization, a storage bin can store the feeding of powdery battery materials, and a spiral blanking machine drives a spiral main shaft to rotate through a driving mechanism to drive the powdery battery materials to carry out blanking and conveying; the pitch of the helical blade on the spiral main shaft is gradually reduced from the feed end to the discharge end, then the helical blade distributes and is intensive gradually, can guarantee the delivery capacity to powdery battery material on the one hand, and on the other hand when spiral main shaft slows down and stall, intensive helical blade plays the buffer memory effect to powdery battery material gradually, can "hang" and live most powder, the work of cooperation induction port improves the locking material effect of this device, prevents to feed the in-process powder and outwards lets and lead to the raise dust. Helical blade's surface coating has the wearing layer, can improve helical blade's wearability when helical blade rotates the transport powder form battery material, prevents that the powder from directly rubbing helical blade body, improves helical blade's life, practices thrift the maintenance cost.

Drawings

In the drawings, the size and the proportion do not represent the size and the proportion of an actual product. The figures are merely illustrative and certain unnecessary elements or features have been omitted for clarity.

Fig. 1 is a schematic structural view of a charging machine for graphitizing a battery material according to the present invention;

fig. 2 is a schematic structural view of the spiral blanking machine of the present invention;

fig. 3 is a schematic structural view of the blanking pipe of the present invention;

fig. 4 is a schematic structural diagram of the sealing shell of the present invention.

The reference numerals in the schematic drawings illustrate:

1. a storage bin; 2. a spiral blanking machine; 3. a discharging pipe; 4. sealing the shell; 21. a drive mechanism; 22. a helical main shaft; 23. a helical blade; 31. an upper filter cartridge; 32. a sleeve; 33. a lower filter cartridge; 311. an air suction port; 312. a back flushing port; 41. a dust suction port.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples. What has been described herein is merely a preferred embodiment in accordance with the present invention, and those skilled in the art will appreciate that other ways of implementing the present invention on the basis of the preferred embodiment will also fall within the scope of the present invention.

Examples

In order to solve the problem of dust emission caused by the escape of powder in the charging process of the conventional charging machine, referring to fig. 1-2, the utility model provides a charging machine for battery material graphitization, which comprises a storage bin 1 and a spiral blanking machine 2; a feed inlet is arranged on the storage bin 1, the powdery battery material enters the storage bin 1 through an opening, and the storage bin 1 stores the powdery battery material before conveying; spiral blanking machine 2 is including the spiral main shaft 22 that has helical blade 23, and the conveying pipe subassembly, the powder passes through the pay-off pipe subassembly pay-off, the feed end of pay-off pipe subassembly is connected to feed bin 1, spiral main shaft 22 passes in feed bin 1 stretches into the conveying pipe subassembly, the discharge gate of feed bin 1 and the sealed intercommunication of feed end of unloading pipe 3, the powder in feed bin 1 passes through the spiral main shaft 22 rotation of spiral blanking machine 2, it removes in the conveying pipe subassembly to drive the powder, accomplish the action of loading toward the crucible.

Referring to fig. 1, the spiral blanking machine 2 further comprises a driving mechanism 21 connected with a spiral main shaft 22 in a driving manner, the driving mechanism 21 is installed at the top of the storage bin 1, and the driving mechanism 21 can drive the spiral main shaft 22 to rotate, so that powder is moved and conveyed along with the rotation of the spiral main shaft 22; the spiral blade 23 on the spiral main shaft 22 extends from the inside of the bin 1 to the position of the discharge end in the discharging pipe 3, so that the conveying stroke of the spiral main shaft 22 can be increased while the conveying amount can be ensured. In the present embodiment, the driving mechanism 21 is a motor, and other driving methods may be used.

The loader often needs to charge a plurality of crucibles, and every crucible needs to be changed in time after the completion of charging so that the next crucible can be charged in time. In order to prevent the powder in the screw from falling off when the crucible is replaced, referring to fig. 2, the pitch of the helical blades 23 on the helical main shaft 22 is gradually reduced from the feeding end to the discharging end of the discharging pipe 3, that is, the helical blades 23 are gradually and densely distributed towards the discharging end of the discharging pipe 3, and the helical blades 23 can extrude the air mixed in the powder on one hand, so that the conveying capacity of the powder can be ensured; on the other hand, when the spiral main shaft 22 decelerates and stops rotating, the gradually dense spiral blades 23 play a buffer role on the powdery battery material, can 'hang' most of the powdery material, and improve the material locking effect of the device by matching with the work of the air suction port 311.

In addition, the surface coating of helical blade 23 has the wearing layer, can improve helical blade 23's wearability when helical blade 23 rotates and carries powdery battery material, prevents that the powder from directly rubbing helical blade 23 body, improves helical blade 23's life, practices thrift the maintenance cost.

It should be noted that, referring to fig. 3, the feeding pipe assembly of the charging machine includes a cylindrical blanking pipe 3 having a feeding end and a discharging end, the blanking pipe 3 includes an outer shell and an inner cylinder, the outer shell and the inner cylinder form an interlayer, an air hole communicating an inner cavity of the blanking pipe 3 and the interlayer is formed on the surface of the inner cylinder, and the inner cylinder plays a role of filtering; the outer shell is provided with an air suction port 311 and a back blowing port 312; one end of the air suction port 311 is communicated with the interlayer, and the other end is used for connecting a negative pressure air source; the air suction port 311 is used for exhausting air outwards after the spiral discharging is finished through the negative pressure air source, so that a negative pressure effect is formed in the interlayer of the discharging pipe 3, and the air can freely pass through the inner cylinder body due to the fact that the pore diameter of the surface pore of the inner cylinder body is smaller than the particle diameter of the powder, the powder cannot pass through the inner cylinder body, the powder is adsorbed on the pipe orifice, the powder in the spiral is prevented from falling off when the crucible is replaced, a material locking effect is achieved, and discharging leakage of the discharging port is prevented. One end of the back flushing port 312 is communicated with the interlayer, and the other end is used for connecting a positive pressure air source; the back blowing port 312 blows air into the discharging pipe 3 through a positive pressure air source, so that powder adsorbed in the air holes of the inner cylinder body is blown off and cleaned in time, the service life of the inner cylinder body is prolonged, and the effect of negative pressure material locking is kept.

In order to further improve the material locking effect of the device, referring to fig. 3, the inner cylinder includes an upper filter cylinder 31, a sleeve 32 and a lower filter cylinder 33 sequentially arranged from the feeding end to the discharging end, the upper filter cylinder 31 and the lower filter cylinder 33 are provided with air holes, the peripheral surface of the sleeve 32 is closed, under the condition that the air pressure of the negative pressure air source passing through the air suction port 311 is constant, the existence of the sleeve 32 is equivalent to reducing the stress area of the inner cylinder, so that the air suction pressure is increased, the adsorbability of the inner cylinder of the discharging pipe 3 to powder is further improved, and the leakage of the discharging port is prevented.

In order to facilitate the operation of the air suction port 311 and the back blowing port 312, referring to fig. 3, the air suction port 311 and the back blowing port 312 are located in the length range of the outer shell corresponding to the upper filter cartridge 31, and the air suction port 311 sucks air to make the air flow go from bottom to top, thereby improving the adsorption force; the air blowing port blows air to enable air flow to move from top to bottom, so that powder is blown off, and the powder is cleaned conveniently.

The inventor prefers the material for manufacturing the upper filter cylinder 31 and the lower filter cylinder 33 according to the structure of the device and the characteristics of the battery material to be conveyed, referring to fig. 3, the upper filter cylinder 31 and the lower filter cylinder 33 are both made of metal sintered nets, the metal sintered nets are manufactured by special processes such as laminating pressing and vacuum sintering, the metal sintered nets have high mechanical strength and integral rigid structures, and the meshes of all layers of the wire nets are mutually staggered to form a uniform and ideal filter structure; the device can reasonably match and design the pore size, permeability and strength characteristics of the material, so that the device has excellent filtering precision, filtering impedance, mechanical strength, wear resistance, heat resistance and processability, and is more suitable for being applied to the device compared with other types of filtering materials such as filter cloth, filter paper and the like, and the material locking effect on powder can be enhanced.

In addition, referring to fig. 4, the charging machine of the present invention further includes a cylindrical sealing shell 4, the inlet end of the sealing shell 4 is in sealed communication with the discharge end of the blanking tube 3, the outlet end of the sealing shell is used for communicating with the crucible, and the sealing shell 4 increases the blanking tightness between the blanking tube 3 and the crucible; be provided with the inside dust absorption mouth 41 of intercommunication on the sealed shell 4 for connect the negative pressure air supply, the negative pressure air supply sucks the air in the sealed shell 4 through dust absorption mouth 41, can suck away a small amount of raise dust, further increases the lock material effect of unloading pipe 3, prevents to leak the material.

Referring to fig. 4, the outlet end of the sealing shell 4 is trumpet-shaped, so that powder can conveniently fall into the crucible; the sealing shell 4 is provided with a sealing element on the connecting surface with the crucible, so that the sealing performance of the device can be improved, and the powdery battery material is prevented from entering the crucible and leaking outwards; the sealing member adopts sponge or rubber material, and sponge or rubber all are common sealing member preparation material, acquire easily, and the maintenance cost is low.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art should understand that without departing from the spirit of the present invention, the person skilled in the art should not inventively design the similar structural modes and embodiments to the technical solution, and all shall fall within the protection scope of the present invention.

Claims

1. A feed tube assembly for a charger for graphitizing battery material, comprising: the blanking device comprises a cylindrical blanking pipe (3) and a control device, wherein the blanking pipe (3) is provided with a feeding end and a discharging end and is characterized in that the blanking pipe (3) comprises an outer shell and an inner cylinder body, the outer shell and the inner cylinder body form an interlayer, and the surface of the inner cylinder body is provided with air holes communicated with the inner cavity of the blanking pipe (3) and the interlayer; the outer shell is provided with an air suction port (311) and a back flushing port (312); one end of the air suction port (311) is communicated with the interlayer, and the other end of the air suction port is connected with a negative pressure air source; one end of the back blowing port (312) is communicated with the interlayer, and the other end of the back blowing port is used for being connected with a positive pressure air source.

2. The feed pipe assembly of the charger for graphitization of battery material according to claim 1, wherein said inner cylinder includes an upper filter cartridge (31), a sleeve (32) and a lower filter cartridge (33) arranged in sequence from a feeding end to a discharging end, and said upper filter cartridge (31) and said lower filter cartridge (33) are provided with air holes.

3. The feeder tube assembly of the charger for graphitization of battery material according to claim 2, wherein said suction port (311) and blowback port (312) are provided on the outer housing within a length corresponding to said upper filter cartridge (31).

4. The assembly according to claim 2, wherein the upper filter cartridge (31) and the lower filter cartridge (33) are made of sintered metal mesh.

5. The feed pipe assembly of a charger for graphitization of battery material according to claim 1, further comprising a cylindrical sealing shell (4); the inlet end of the sealing shell (4) is hermetically communicated with the discharge end of the blanking pipe (3), and the outlet end of the sealing shell is communicated with the crucible; the sealing shell (4) is provided with a dust suction port (41) communicated with the inside and used for being connected with a negative pressure air source.

6. The feeding tube assembly of the charging machine for battery material graphitization according to claim 5, characterized in that the outlet end of the sealing shell (4) is horn-shaped, the joint surface with the crucible is provided with a sealing member, and the sealing member is made of sponge or rubber.

7. A charging machine for battery material graphitization comprises a storage bin (1) and a spiral blanking machine (2); the spiral blanking machine (2) comprises a spiral main shaft (22) with a spiral blade (23) and a feeding pipe assembly, the storage bin (1) is connected with the feeding end of the feeding pipe assembly, the spiral main shaft (22) penetrates through the storage bin (1) and extends into the feeding pipe assembly, the spiral blanking machine is characterized in that the feeding pipe assembly of the charging machine for graphitizing battery materials as claimed in any one of claims 1 to 6 is adopted for the feeding pipe assembly, and the discharge port of the storage bin (1) is communicated with the feeding end of the blanking pipe (3) in a sealing mode.

8. The charging machine for battery material graphitization according to claim 7, characterized in that the spiral blanking machine (2) further comprises a driving mechanism (21) for driving and connecting the spiral main shaft (22), and the driving mechanism (21) is installed on the top of the storage bin (1); and the spiral blade (23) on the spiral main shaft (22) extends to the position of the discharge end in the discharge pipe (3) from the inside of the storage bin (1).

9. The charging machine for the graphitization of the battery material according to claim 8, wherein the pitch of the helical blades (23) on the helical main shaft (22) is gradually reduced from the feeding end to the discharging end of the blanking tube (3).

10. The charging machine for battery material graphitization according to claim 9, characterized in that the surface of the helical blade (23) is coated with an abrasion resistant layer.