Hard carbon negative electrode material production crushing device

Abstract

The utility model relates to the technical field of sodium ion batteries, in particular to a hard carbon negative electrode material producing and crushing device which comprises a rack, and a feeding part, a crushing part and a receiving part which are respectively arranged on the rack and are connected with the rack, the crushing part comprises a sealing bin, a crushing bin coaxially arranged in the sealing bin, a material guide mechanism fixedly mounted in the middle of the crushing bin, a plurality of groups of rotating rollers which are arranged around the material guide mechanism and can rotate and revolve around the material guide mechanism, and a power mechanism for driving the plurality of groups of rotating rollers to operate; an air inlet bin communicated with the crushing air pipe is formed between the sealing bin and the crushing bin, the crushing bin comprises a feeding unit communicated with the feeding part, a plurality of tangential air nozzles used for air flow entering are arranged on the periphery of the crushing bin, and a discharging opening located in the top of the crushing bin and communicated with the material receiving part; the technical problems that in the prior art, material particles at a discharging port are different in size, and the discharging port is prone to being blocked are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sodium ion batteries, in particular to a hard carbon negative electrode material production and pulverization device. Background Art

[0002] The upstream of hard carbon negative electrode is mainly the raw materials for manufacturing hard carbon negative electrode materials, mainly including resin-based, asphalt-based, biomass-based, etc. At present, due to factors such as cost and easy preservation, most companies choose to use biomass-based materials and obtain hard carbon negative electrode materials through vacuum carbonization. Since hard carbon negative electrode materials have played a significant role in improving battery energy storage performance, improving safety, and reducing costs, they were subsequently made into lithium-ion batteries and sodium-ion batteries, and were widely used in the field of new energy vehicles.

[0003] The utility model patent with Chinese patent application number CN202322215608.3 discloses an air flow pulverizer for carbonization of hard carbon negative electrode, including a cylinder, a screening mechanism, a drainage mechanism and a scraping mechanism, wherein the screening mechanism includes a box, a filter plate and an exciter are arranged inside the box, a first feed pipe and a first motor are fixedly connected to the upper end of the box, a stirring rod is arranged at the lower end of the first motor, a first discharge pipe is fixedly connected to the lower end of the box, a second feed pipe is fixedly connected to the side of the cylinder, and a through hole is provided at the upper end of the second feed pipe. Through the above structure, the unevenly carbonized hard carbon negative electrode materials are screened and crushed, avoiding the need for repeated processing to reduce the processing efficiency, facilitating the improvement of the subsequent air flow crushing efficiency, and the internal cleaning and scraping operation of the device is performed to avoid long-term accumulation, which will cause the dust to condense into blocks, thereby making the subsequent device unable to be used, effectively improving the service life of the device.

[0004] However, when the equipment is in use, particles of different sizes after air flow crushing will be discharged from the discharge port, and blockage is likely to occur at the discharge port, thereby affecting the crushing efficiency and crushing effect. Utility Model Content

[0005] In view of the above problems, the utility model provides a hard carbon negative electrode material production and crushing device, which drives several groups of rotating rollers to rotate and revolve in a crushing bin through a power mechanism. When the material to be crushed is driven by high-speed gas to rotate and crush in the crushing bin, the material will collide with the rotating rollers to improve the crushing efficiency, and in the process of the rotating rollers moving around the material guiding mechanism, the material guiding mechanism is prevented from being blocked, so that the crushed material passes through the material guiding component and then flows into the collecting part, solving the technical problems of different material particle sizes in the existing discharge port and easy blockage of the discharge port.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A hard carbon negative electrode material production and pulverizing device comprises a frame and a feeding part, a pulverizing part and a receiving part which are respectively arranged on the frame and connected to the frame, the pulverizing part comprises a sealed bin, a pulverizing bin coaxially in the sealed bin, a material guiding mechanism fixedly installed in the middle position of the pulverizing bin, a plurality of groups of rotating rollers which are arranged around the material guiding mechanism and can rotate and revolve around the material guiding mechanism, and a power mechanism which drives the plurality of groups of rotating rollers to operate, an air inlet bin connected to a pulverizing air pipe is formed between the sealed bin and the pulverizing bin, the pulverizing bin comprises a feeding unit connected to the feeding part, a plurality of tangential air nozzles for airflow to enter are arranged on the outer periphery, and a material discharge port located at the top of the pulverizing bin and connected to the receiving part.

[0008] As an improvement, the feeding part includes a feeding hopper, a feeding mechanism, a venturi nozzle and a feeding air pipe connecting the venturi nozzle and an external high-pressure air source, which are connected in sequence, and the venturi nozzle is connected to the feeding unit.

[0009] As an improvement, the material receiving section includes a bag filter connected to the material outlet, a collecting bin arranged below the bag filter, and a blower connected to the bag filter.

[0010] As an improvement, the crushing bin further includes an upper cover, a lower cover and a side wall arranged between the upper cover and the lower cover; a plurality of groups of tangential air nozzles are arranged on the side wall; and the discharge port is opened in the middle position of the upper cover.

[0011] As an improvement, the feeding unit includes an annular groove opened above the upper cover and a feeding port arranged in a circumferential array and opened at the bottom of the annular groove, and the annular groove and the sealing bin form a channel connected to the feeding part.

[0012] As an improvement, the material guiding mechanism includes an upper mounting ring fixedly mounted on the upper cover and coaxially arranged with the material outlet, a plurality of groups of vertical rods distributed in a circular array below the upper mounting ring, and a lower mounting ring fixedly mounted below the plurality of groups of vertical rods.

[0013] As an improvement, the rotating shaft includes a roller body and a plurality of groups of vertical plates extending along the length direction of the roller body and distributed on the roller body in a circumferential array.

[0014] As an improvement, the power mechanism includes a gear ring rotatably arranged at the bottom of the crushing bin, a sealing plate fixedly arranged above the gear ring, a gear a fixedly installed below the material guiding mechanism, a plurality of groups of gears b distributed in a circular array and meshing with the gear ring and the gear a, a turntable fixedly installed below the gear ring, a rotating shaft coaxially installed below the turntable, and a motor fixedly installed on the frame and connected to the rotating shaft through a coupling, and the gear b is coaxially fixedly connected to the roller body.

[0015] As an improvement, the revolution direction of the plurality of groups of rotating rollers is opposite to the spraying direction of the tangential air nozzle.

[0016] The beneficial effects of the utility model are:

[0017] (1) The revolution direction of several groups of rotating rollers of the utility model is opposite to the jet direction of the tangential air nozzle. At the same time, the rotating rollers can rotate on their own and cooperate with the vertical plates arranged on the outside of the roller bodies to increase the relative speed of the materials during collision and crushing, thereby increasing the diversity of the material movement paths and improving the crushing effect.

[0018] (2) In the utility model, the material guide mechanism and the material outlet are coaxially arranged, and a plurality of groups of vertical rods in the material guide mechanism are arranged at intervals so that particles with large diameters cannot pass through, thereby enabling screening of the crushed materials;

[0019] (3) In the present invention, a plurality of groups of rotating rollers revolve around the material guide mechanism while a plurality of groups of rotating rollers rotate on their own, which can effectively prevent the gaps between the vertical rods from being blocked by large particles of material, thereby improving the crushing efficiency;

[0020] (4) In the utility model, the circular ring groove and the sealing chamber form a channel connected to the Venturi nozzle. When feeding, the channel is filled with materials and fed into the crushing chamber through a plurality of feed ports, thereby greatly improving the crushing efficiency.

[0021] In summary, the utility model has the advantages of clever design, simple structure and high crushing efficiency, and is particularly suitable for the production of negative electrode materials for sodium ion batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is the exploded view of the crushing part;

[0024] Figure 3 Cross-sectional view of the crushing unit Figure 1 ;

[0025] Figure 4 Cross-sectional view of the crushing unit Figure 2 ;

[0026] Figure 5 Schematic diagram of the internal structure of the crushing unit. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] Example:

[0031] like Figure 1 and Figure 2As shown, a hard carbon negative electrode material production and pulverizing device includes a frame 1 and a feeding part 2, a pulverizing part 3 and a receiving part 4 respectively arranged on the frame 1 and connected to the frame 1, the pulverizing part 3 includes a sealed bin 31, a pulverizing bin 32 coaxially in the sealed bin 31, a material guiding mechanism 33 fixedly installed in the middle position of the pulverizing bin 32, a plurality of groups of rotating rollers 34 arranged around the material guiding mechanism 33 and capable of rotating and revolving around the material guiding mechanism 33, and a power mechanism 35 for driving the plurality of groups of rotating rollers 34 to operate, an air inlet bin 36 connected to a pulverizing air pipe 360 ​​is formed between the sealed bin 31 and the pulverizing bin 32, the pulverizing bin 32 includes a feeding unit 321 connected to the feeding part 2, a plurality of tangential air nozzles 322 for air flow entry are arranged on the outer periphery, and a material outlet 323 is located at the top of the pulverizing bin 32 and connected to the receiving part 4.

[0032] It should be noted that the sealing chamber 31 is a top-bottom structure and is mechanically fixed by a locking mechanism.

[0033] Further, such as Figure 1 As shown, the feeding part 2 includes a feed hopper 21, a feeding mechanism 22, a venturi nozzle 23 and a feed air pipe 24 connecting the venturi nozzle 23 and an external high-pressure air source, which are connected in sequence. The venturi nozzle 23 is connected to the feeding unit 321.

[0034] It should be noted that the feeding mechanism 22 is an existing vibration feeding mechanism, and its principle is not described in detail here; the Venturi nozzle 23 is an existing technology, and its structure and principle are not described in detail here.

[0035] Further, such as Figure 1 As shown, the material receiving portion 4 includes a bag filter 41 connected to the material outlet 323 , a collecting bin 42 disposed below the bag filter 41 , and a blower 43 connected to the bag filter 41 .

[0036] It should be noted that the air blower 43 and the bag filter 41 are existing technologies, and their principles are not described in detail here.

[0037] Further, such as Figure 2 and Figure 3 As shown, the crushing bin 32 also includes an upper cover 324 , a lower cover 325 , and a side wall 326 disposed between the upper cover 324 and the lower cover 325 ; a plurality of groups of tangential air nozzles 322 are disposed on the side wall 326 ; and the discharge port 323 is opened in the middle position of the upper cover 324 .

[0038] Further, such as Figure 2As shown, the feeding unit 321 includes an annular groove 3211 opened above the upper cover 324 and a feeding port 3212 arranged in a circumferential array and opened at the bottom of the annular groove 3211. The annular groove 3211 and the sealing chamber 31 form a channel connected to the feeding part 2.

[0039] It should be noted that the annular groove 3211 and the sealing bin 31 are connected to the venturi nozzle 23. When feeding, the material fills the entire channel and enters the crushing bin 32 from several groups of the feed ports 3212, which greatly improves the feeding efficiency.

[0040] It is also necessary to explain that the feed port 3212 is opened at an angle, so that the material can quickly follow the high-speed gas ejected from the tangential gas nozzle 322 to form a spiral motion after entering the crushing bin 32 .

[0041] Further, such as Figure 5 As shown, the material guiding mechanism 33 includes an upper mounting ring 331 fixedly mounted on the upper cover 324 and coaxially arranged with the material outlet 323 , a plurality of groups of vertical rods 332 distributed in a circular array below the upper mounting ring 331 , and a lower mounting ring 333 fixedly mounted below the plurality of groups of vertical rods 332 .

[0042] It should be noted that the gap between the vertical rods 332 can prevent particles larger than the gap from being discharged from the discharge port 323, and has the ability to screen the crushed materials.

[0043] It should be further explained that the gap between adjacent rotating rollers 34 is larger than the gap between two adjacent groups of vertical rods 332 . This arrangement can effectively prevent the gap between two adjacent groups of vertical rods 332 from being blocked.

[0044] Further, such as Figure 4 As shown, the revolution direction of the plurality of groups of rotating rollers 34 is opposite to the spraying direction of the tangential air nozzle 322 .

[0045] Further, such as Figure 5 As shown, the rotating roller 34 includes a roller body 341 and a plurality of groups of vertical plates 342 extending along the length direction of the roller body 341 and distributed on the roller body 341 in a circumferential array.

[0046] It should be noted that the revolution direction of the several groups of rotating rollers 34 is opposite to the jet direction of the tangential air nozzle 322, so that the relative speed of the material during collision and crushing is improved. At the same time, several groups of vertical plates 342 are arranged on the outer side of the rotating rollers 34, which increases the diversity of the material movement path and improves the crushing effect.

[0047] It is also necessary to explain that the rotating roller 34 can rotate on its own, and cooperate with the vertical plate 342 arranged on the outside of the roller body 341, so that the diversity of the paths and directions of the materials after collision and crushing is increased, and the crushing effect is further improved.

[0048] It is important to note that the self-rotation of the rotating roller 34 can effectively prevent the material from being blocked in the gaps between the groups of vertical rods 332 .

[0049] Further, such as Figure 5 As shown, the power mechanism 35 includes a gear ring 351 rotatably arranged at the bottom of the crushing bin 32, a sealing plate 352 fixedly arranged above the gear ring 351, a gear a353 fixedly installed below the material guiding mechanism 33, a plurality of groups of gears b354 distributed in a circular array and meshing with the gear ring 351 and the gear a353, a turntable 355 fixedly installed below the gear ring 351, a rotating shaft 356 coaxially installed below the turntable 355, and a motor 358 fixedly installed on the frame 1 and connected to the rotating shaft 356 through a coupling 357, and the gear b354 is coaxially fixedly connected to the roller body 341.

[0050] It should be noted that the gear ring 351 , the gear a353 and a plurality of groups of gears b354 form a planetary gear structure, which ensures the stability of the movement of the roller body 341 .

[0051] Working process:

[0052] The material to be crushed passes through the feed hopper 21, the feeding mechanism 22 and the Venturi nozzle 23 in sequence and enters the crushing bin 32 from the feed port 3212, and moves with the high-speed gas discharged from the tangential gas nozzle 322. The materials to be crushed will collide with each other and will also collide with several groups of rotating rollers 34 that are performing revolution and rotation. The crushed materials pass through two adjacent groups of vertical rods 332 and enter the bag filter 41 through the discharge port 323. Finally, the finished materials are collected through the collection bin 42.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hard carbon negative electrode material production and pulverization device, characterized in that: The invention comprises a frame (1), and a feeding part (2), a crushing part (3), and a receiving part (4) which are respectively arranged on the frame (1) and connected to the frame (1); the crushing part (3) comprises a sealing chamber (31), a crushing chamber (32) coaxially arranged in the sealing chamber (31), a material guide mechanism (33) fixedly installed in the middle of the crushing chamber (32), and a plurality of groups of rotating rollers (33) arranged around the material guide mechanism (33) and capable of self-rotation and revolution around the material guide mechanism (33). 34) and a power mechanism (35) for driving a plurality of groups of rotating rollers (34) to operate, an air inlet bin (36) connected to a pulverizing air pipe (360) is formed between the sealing bin (31) and the pulverizing bin (32), the pulverizing bin (32) comprising a feeding unit (321) connected to the feeding portion (2), a plurality of tangential air nozzles (322) arranged on the outer periphery for air flow to enter, and a discharge port (323) located at the top of the pulverizing bin (32) and connected to the receiving portion (4).

2. A hard carbon negative electrode material production and pulverization device according to claim 1, characterized in that: The feeding section (2) comprises a feeding hopper (21), a feeding mechanism (22), a Venturi nozzle (23), and a feeding air pipe (24) connected in sequence to the Venturi nozzle (23) and an external high-pressure air source, wherein the Venturi nozzle (23) is connected to the feeding unit (321).

3. The hard carbon negative electrode material production and pulverization device according to claim 1, characterized in that: The material receiving section (4) comprises a bag filter (41) connected to the material outlet (323), a collecting bin (42) arranged below the bag filter (41), and a blower (43) connected to the bag filter (41).

4. The hard carbon negative electrode material production and pulverization device according to claim 1, characterized in that: The crushing bin (32) further comprises an upper cover (324), a lower cover (325), and a side wall (326) arranged between the upper cover (324) and the lower cover (325); a plurality of groups of tangential air nozzles (322) are arranged on the side wall (326); and the discharge port (323) is opened in the middle position of the upper cover (324).

5. A hard carbon negative electrode material production and pulverization device according to claim 4, characterized in that: The feeding unit (321) comprises an annular groove (3211) opened above the upper cover (324) and feeding ports (3212) arranged in a circumferential array and opened at the bottom of the annular groove (3211); the annular groove (3211) and the sealing bin (31) form a channel communicating with the feeding portion (2).

6. The hard carbon negative electrode material production and pulverization device according to claim 4, characterized in that: The material guiding mechanism (33) comprises an upper mounting ring (331) fixedly mounted on the upper cover (324) and coaxially arranged with the material outlet (323), a plurality of groups of vertical rods (332) distributed in a circular array below the upper mounting ring (331), and a lower mounting ring (333) fixedly mounted below the plurality of groups of vertical rods (332).

7. A hard carbon negative electrode material production and pulverization device according to claim 6, characterized in that: The rotating roller (34) comprises a roller body (341) and a plurality of groups of vertical plates (342) extending along the length direction of the roller body (341) and distributed in a circumferential array on the roller body (341).

8. The hard carbon negative electrode material production and pulverization device according to claim 7, characterized in that: The power mechanism (35) comprises a gear ring (351) rotatably arranged at the bottom of the crushing bin (32), a sealing plate (352) fixedly arranged above the gear ring (351), a gear a (353) fixedly installed below the material guiding mechanism (33), a plurality of groups of gears b (354) distributed in a circumferential array and meshing with the gear ring (351) and the gear a (353), a rotating disk (355) fixedly installed below the gear ring (351), a rotating shaft (356) coaxially installed below the rotating disk (355), and a motor (358) fixedly installed on the frame (1) and connected to the rotating shaft (356) via a coupling (357), wherein the gear b (354) is coaxially fixedly connected to the roller body (341).

9. The hard carbon negative electrode material production and pulverization device according to claim 1, characterized in that: The revolution direction of the plurality of groups of rotating rollers (34) is opposite to the spraying direction of the tangential air nozzle (322).

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