Raw material pulverizing device

Abstract

This utility model discloses a raw material crushing device, including a frame, with a housing fixedly connected to the top of the frame. Two rollers are symmetrically arranged inside the housing, and crushing rollers are fixedly sleeved on the outer surfaces of both rollers. Spiral cooling channels are formed on the outer walls of both rollers and the inner walls of the crushing rollers. Support pipes are fixedly connected to both ends of the two rollers, penetrating the housing and rotatably sealed to it. In this utility model, the cooling plate inside the long cylinder and the spiral cooling channels inside the crushing rollers together form an integrated cooling circulation system. This system can simultaneously pre-cool the falling material and directly and efficiently cool the crushing area, effectively solving the problems of material oxidation and denaturation, as well as binder softening and scaling caused by localized high temperatures during the crushing process. This significantly improves the crushing quality of heat-sensitive raw materials and the operational stability of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of crushing device technology, and in particular to a raw material crushing device. Background Technology

[0002] With the rapid development of new energy vehicles and the energy storage industry, higher requirements have been placed on the energy density, cycle life, and safety performance of lithium-ion batteries. As a core component of lithium-ion batteries, the physicochemical properties of the anode material, such as particle size distribution, morphology, and crystallinity, directly determine the overall performance of the battery. Therefore, efficient pulverization and shaping of anode materials such as natural graphite, artificial graphite, and silicon-carbon composites are key technological steps to improve their electrochemical performance.

[0003] Currently, mainstream pulverizing equipment (such as air jet mills and mechanical pulverizers) generally relies on high-speed impact, friction, and shearing principles to crush and shape materials. However, this process involves significant energy conversion, easily generating and accumulating a large amount of heat—including the instantaneous conversion of kinetic energy caused by high-speed collisions between particles and equipment components, frictional heat generated by intense friction, and energy consumed by the plastic deformation of materials. Because the pulverizing process occurs instantaneously and in a closed environment, heat is difficult to dissipate rapidly, easily forming localized high temperatures in the core working area of ​​the equipment. This high temperature may cause oxidation of materials such as graphite, destroying their crystal structure and causing irreversible capacity loss; at the same time, commonly used organic binders (such as PVDF, SBR / CMC, etc.) have poor heat resistance and are prone to softening, melting, or even decomposition under localized high temperatures, leading to scaling on the inner wall of the equipment and affecting its use.

[0004] Therefore, we propose a raw material crushing device. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a raw material crushing device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a raw material crushing device, including a frame, a housing fixedly connected to the top of the frame, two rollers symmetrically arranged inside the housing, crushing rollers fixedly sleeved on the outer surfaces of the two rollers, a spiral cooling channel opened on the outer walls of the two rollers and the inner walls of the crushing rollers, a support pipe fixedly connected to both ends of the two rollers, the support pipes penetrating the housing and being rotatably connected to the housing in a sealed manner, and a rotary joint fixedly communicating with the ends of the four support pipes;

[0007] A power assembly is installed between the two support tubes on the same side;

[0008] The top of the shell is fixedly connected to a long cylinder, and multiple cooling plates are fixedly connected to the inner walls of the two sides of the long cylinder in a staggered manner. One side of the multiple cooling plates is fixedly connected to the fixed ends of two rotary joints on the same side with a liquid inlet pipe, and the other side of the multiple cooling plates is fixedly connected to the fixed ends of two rotary joints on the same side with a liquid outlet pipe.

[0009] Furthermore, a feed pipe is fixedly connected to the bottom of the shell to ensure that the crushed material can be discharged smoothly and centrally.

[0010] Furthermore, all four support tubes are interconnected with adjacent spiral cooling channels, allowing coolant to flow into and out of the spiral cooling channels without obstruction through the rotary joints.

[0011] Furthermore, the power assembly includes two large gears, which are fixedly sleeved on the outer surface of adjacent support tubes. Small gears mesh on one side of the outer surface of each of the two large gears, and the two small gears mesh with each other and are rotatably connected to the housing. A reduction motor is fixedly connected to the top side of the frame, and the drive shaft of the reduction motor is fixedly connected to the adjacent small gear. The two crushing rollers are driven to rotate in opposite directions by gear meshing, resulting in smooth transmission.

[0012] Furthermore, each of the multiple cooling plates includes an inclined plate, which is fixed to the inner wall of the long cylinder. An S-shaped flow channel is formed on the inner side of the inclined plate. Fixed pipes are fixedly connected to both ends of the inclined plate, and the fixed pipes are set through the long cylinder and communicate with the S-shaped flow channel. The S-shaped flow channel greatly extends the path of the coolant in the cooling plate and the heat exchange time.

[0013] Furthermore, the inlet pipe and outlet pipe are respectively fixedly connected to multiple fixed pipes on the same side.

[0014] Furthermore, a feed hopper is fixedly connected to the top of the long cylinder, which facilitates the addition of materials.

[0015] The beneficial effects of this utility model are:

[0016] In use, this invention forms an integrated cooling circulation system by combining the cooling plate inside the long cylinder with the spiral cooling channel inside the crushing roller. This system can simultaneously pre-cool the falling material and directly and efficiently cool the crushing area, effectively solving the problems of material oxidation and denaturation and binder softening and scaling caused by local high temperature during the crushing process. This significantly improves the crushing quality of heat-sensitive raw materials and the operational stability of the equipment. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall side view structure of this utility model;

[0020] Figure 3 This is a schematic cross-sectional view of the overall structure of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the roller shaft of this utility model;

[0022] Figure 5 This is a schematic diagram of the inclined plate cross-sectional structure of this utility model.

[0023] The attached figures are labeled as follows:

[0024] 1. Frame; 2. Shell; 3. Long cylinder; 4. Feed hopper; 5. Fixed pipe; 6. Large gear; 7. Rotary joint; 8. Liquid inlet pipe; 9. Gear motor; 10. Small gear; 12. Liquid outlet pipe; 13. Feed pipe; 14. Inclined plate; 15. Roller shaft; 16. Crushing roller; 17. Spiral cooling channel; 18. Support pipe; 19. S-shaped channel. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figures 1-5 As shown, a raw material crushing device is disclosed, including a frame 1, a housing 2 fixedly connected to the top of the frame 1, and a feed pipe 13 fixedly connected to the bottom of the housing 2. The feed pipe 13 is made of stainless steel, with a smooth inner wall and can be coated with a ceramic coating to facilitate the smooth discharge of crushed materials and reduce wear.

[0027] The housing 2 has two symmetrical rollers 15 inside. The outer surfaces of the two rollers 15 are fixedly fitted with crushing rollers 16. The outer walls of the two rollers 15 and the inner walls of the crushing rollers 16 are provided with spiral cooling channels 17. The two ends of the two rollers 15 are fixedly connected with support tubes 18, which pass through the housing 2 and are rotatably connected to the housing 2 in a sealed manner. The ends of the four support tubes 18 are fixedly connected with rotary joints 7. The four support tubes 18 are interconnected with the adjacent spiral cooling channels 17. The support tubes 18 and the housing 2 are rotatably connected through bearing seats. The bearing seat body is fixed to the housing 2. The inner ring of the bearing inside the bearing seat is fixed to the support tube 18. The bearing inside the bearing seat is sealed with packing.

[0028] A power assembly is installed between the two support tubes 18 on the same side. The power assembly includes two large gears 6, which are fixedly sleeved on the outer surface of the adjacent support tubes 18. A small gear 10 is meshed on one side of the outer surface of each of the two large gears 6, and the two small gears 10 mesh with each other and are rotatably connected to the housing 2. A geared motor 9 is fixedly connected to the top side of the frame 1, and the drive shaft of the geared motor 9 is fixedly connected to the adjacent small gear 10. The small gear 10 is also rotatably connected to the housing 2 through a bearing seat. The installation method is as described above.

[0029] The top of the shell 2 is fixedly connected to a long cylinder 3. Multiple cooling plates are fixedly connected to the inner walls of the two sides of the long cylinder 3 in a staggered manner. One side of the multiple cooling plates is fixedly connected to the fixed ends of two rotary joints 7 on the same side with an inlet pipe 8. The other side of the multiple cooling plates is fixedly connected to the fixed ends of two rotary joints 7 on the same side with an outlet pipe 12. Each of the multiple cooling plates includes an inclined plate 14, and the inclined plate 14 is fixed to the inner wall of the long cylinder 3. An S-shaped flow channel 19 is opened on the inner side of the inclined plate 14. Both ends of the inclined plate 14 are fixedly connected to a fixed pipe 5, and the fixed pipe 5 passes through the long cylinder 3 and is connected to the S-shaped flow channel 19. The inlet pipe 8 and the outlet pipe 12 are fixedly connected to the multiple fixed pipes 5 on the same side. The inlet pipe 8 can be made of stainless steel and is used to connect to the external cooling system circulation pump. The outlet pipe 12 can be made of stainless steel and is fixedly connected to the external cooling system return pipe.

[0030] The top of the long cylinder 3 is fixedly connected to a feed hopper 4, which is made of carbon steel or stainless steel and has a smooth inner wall to guide the material into the long cylinder 3.

[0031] Working principle: Material is fed into the top feed hopper 4 and falls into the housing 2 through the long cylinder 3. Two roller shafts 15 located inside the housing 2 and their fixed crushing rollers 16 rotate in opposite directions under the cooperation of a reduction motor 9, a pinion 10, and a large gear 6. When the material enters the gap between the two crushing rollers 16, it is subjected to enormous compression and shearing forces, thus achieving crushing and shaping. The crushed material is discharged from the discharge pipe 13 at the bottom of the housing 2.

[0032] During this period, coolant (usually chilled water or heat transfer oil) is pumped in from the external circulation system. The coolant is first distributed to the various cooling plates inside the long cylinder 3 through the inlet pipe 8. The coolant flows into the S-shaped flow channel 19 through the fixed pipe 5 on one side of the inlet pipe 8, then flows out of the S-shaped flow channel 19 through the fixed pipe 5 on one side of the outlet pipe 12, and then is discharged through the outlet pipe 12. When the material falls from the feed hopper 4 and passes through these cooling plates with coolant flowing inside, the heat it carries is initially absorbed, achieving pre-cooling of the material and reducing the temperature of the material entering the crushing zone from the source.

[0033] The coolant entering the inlet pipe 8 is simultaneously transported to the two rotary joints 7 on the same side, and then enters the spiral cooling channel 17 inside the high-speed rotating roller 15 through the support pipe 18. The coolant flows at high speed in the spiral cooling channel 17, fully and evenly absorbing the large amount of frictional and impact heat generated by the crushing roller 16 during high-speed material crushing, ensuring that the crushing roller 16 is always maintained at a low operating temperature. Finally, the heat-absorbing coolant flows from the support pipe 18 and rotary joint 7 at the other end of the roller 15 into the outlet pipe 12, and returns to the external circulating cooling system for further cooling, thus forming a complete closed cooling cycle.

[0034] In practical use, a controller can be added. The controller is electrically connected to the geared motor 9, which is beneficial for controlling the operation of the geared motor 9.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A raw material pulverizing device comprising a frame (1), characterized in that: The top of the frame (1) is fixedly connected to a housing (2). Two rollers (15) are symmetrically arranged inside the housing (2). Crushing rollers (16) are fixedly sleeved on the outer surfaces of the two rollers (15). The outer walls of the two rollers (15) and the inner walls of the crushing rollers (16) are provided with spiral cooling channels (17). Support pipes (18) are fixedly connected to both ends of the two rollers (15). The support pipes (18) penetrate the housing (2) and are sealed and rotatably connected to the housing (2). Rotary joints (7) are fixedly connected to the ends of the four support pipes (18). A power assembly is installed between the two support tubes (18) on the same side; The top of the shell (2) is fixedly connected to a long cylinder (3). Multiple cooling plates are fixedly connected to the inner walls of the two sides of the long cylinder (3) in a staggered manner. One side of the multiple cooling plates is fixedly connected to the fixed end of two rotary joints (7) on the same side with an inlet pipe (8). The other side of the multiple cooling plates is fixedly connected to the fixed end of two rotary joints (7) on the same side with an outlet pipe (12).

2. The raw material pulverizing device according to claim 1, characterized by: The bottom of the housing (2) is fixedly connected to a feed pipe (13).

3. The raw material pulverizing device according to claim 1, characterized by: All four support tubes (18) are interconnected with the adjacent spiral cooling channels (17).

4. The raw material pulverizing device according to claim 1, characterized by: The power assembly includes two large gears (6), and the large gears (6) are fixedly sleeved on the outer surface of the adjacent support tube (18). A small gear (10) is meshed on one side of the outer surface of each of the two large gears (6), and the two small gears (10) mesh with each other and are rotatably connected to the housing (2). A geared motor (9) is fixedly connected to the top side of the frame (1), and the drive shaft of the geared motor (9) is fixedly connected to the adjacent small gear (10).

5. The raw material pulverizing device according to claim 1, characterized by: Each of the cooling plates includes an inclined plate (14), and the inclined plate (14) is fixed to the inner wall of the long cylinder (3). An S-shaped flow channel (19) is opened on the inner side of the inclined plate (14). A fixing pipe (5) is fixedly connected to both ends of the inclined plate (14), and the fixing pipe (5) is set through the long cylinder (3) and communicates with the S-shaped flow channel (19).

6. A raw material pulverizing device according to claim 5, characterized by: The inlet pipe (8) and outlet pipe (12) are respectively fixedly connected to multiple fixed pipes (5) on the same side.

7. The raw material pulverizing device according to claim 1, characterized by: The top of the long cylinder (3) is fixedly connected to a feed hopper (4).

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