Preparation device of silicon-carbon composite negative electrode material

Abstract

The invention discloses a silicon-carbon composite negative electrode material preparation device, and relates to the technical field of silicon-carbon composite negative electrode materials, the silicon-carbon composite negative electrode material preparation device comprises a fixed support, a silicon-carbon material mixing kettle, a sealing box body and a composite stirring cleaning device, the silicon-carbon material mixing kettle is movably installed on the fixed support, and a kettle body lifting assembly is arranged at the front end of the silicon-carbon material mixing kettle; the upper end is connected with a silicon-based and carbon-based raw material feeding pipe through an intelligent double-channel control box, and the in-kettle composite stirring and cleaning device realizes all-directional stirring and synchronous cleaning of the kettle wall by virtue of structures such as an inner gear ring, a driving roller and a supporting roller; the rear-end crushing mechanism crushes materials and then feeds the materials into the sealing box body through the conveying pipe, the vibration device cooperates with the crushing solid balls in the sealing box body to complete material screening and refining, the hot air drying box provides a drying environment, finished products fall into the storage box, and the device improves mixing uniformity and the utilization rate of raw materials through cooperation of all the components, so that full-process automation of preparation is achieved. Therefore, the method is suitable for large-scale production.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of silicon-carbon composite negative electrode material, in particular to a silicon-carbon composite negative electrode material preparation device. BACKGROUND

[0002] In the preparation process of the silicon-carbon composite negative electrode material, the uniform mixing of the silicon-based raw material and the carbon-based raw material is one of the core links that determines the electrochemical performance of the material. However, the mixing device for this link in the prior art has significant technical bottlenecks: the traditional mixing device generally adopts a single-shaft stirring structure, and the stirring rod can only rotate around a fixed axis, and its stirring range is limited to the central area of the kettle body. The material in the edge area close to the kettle wall is difficult to effectively reach, resulting in a clear concentration gradient of the silicon-based and carbon-based raw materials in the kettle - the raw materials in the central area are relatively fully mixed, while the edge area is prone to "agglomeration" or "layering", forming a mixing dead angle. This uneven mixing will cause uneven dispersion of the silicon phase in the final material, resulting in differences in local volume expansion during charging and discharging, and further causing material cracking, cycle performance degradation and other problems.

[0003] At the same time, the silicon-based raw material and the carbon-based raw material are mostly in powder form, and in the stirring process, they are easily attached to the surface of the kettle wall due to electrostatic adsorption or viscous action, forming a residual layer that is difficult to remove. Not only does this residual material reduce the utilization rate of raw materials, but more seriously, the residual material may be oxidized, phase changed or cross-contaminated after being heated for a long time in the kettle or coming into contact with subsequent batches of raw materials, resulting in fluctuations in the performance of subsequent products. The existing device lacks a kettle wall cleaning function synchronized with the stirring process, and needs to be stopped after each batch of production is completed for manual disassembly of the kettle body or insertion of cleaning tools for cleaning. This not only is cumbersome and time-consuming, affecting the continuity of production, but also may cause damage to the kettle wall due to improper manual operation, further affecting the mixing effect.

[0004] In addition, the stirring trajectory of the traditional stirring device is fixed and cannot be dynamically adjusted according to the mixing state of the material. For different particle sizes and densities of the silicon-based and carbon-based raw materials (such as nano-silicon powder and graphite powder), it is difficult to achieve a synergistic effect, resulting in insufficient interfacial bonding force between the raw material particles and affecting the structural stability of the composite material. SUMMARY

[0005] The purpose of the present application is to provide a silicon-carbon composite negative electrode material preparation device that solves the problems of uneven mixing, difficulty in cleaning residual material from the kettle wall, and inability to adapt to the mixing needs of multiple types of raw materials in the preparation of existing silicon-carbon composite negative electrode materials, resulting in low production efficiency and poor product quality stability.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a silicon-carbon composite negative electrode material preparation device, comprising a fixed support, a silicon-carbon material mixing kettle, a sealed box body and a composite stirring and cleaning device, The silicon-carbon material mixing kettle is movably arranged in the fixed support, a kettle body lifting assembly is arranged at the front end in the fixed support, a sealing box is arranged at the rear end outside the silicon-carbon material mixing kettle, a hot air drying box is fixedly connected to one side outside the sealing box, a mixing kettle top cover is fixedly connected to the front end surface of the silicon-carbon material mixing kettle, a protection box is connected to the front end of the mixing kettle top cover, a material guiding hole is arranged at the lower end of the rear end surface of the silicon-carbon material mixing kettle, an intelligent double-channel control box is arranged at the upper end front end surface of the silicon-carbon material mixing kettle, a silicon-based raw material feeding pipe and a carbon-based raw material feeding pipe are respectively connected to the upper surface of the intelligent double-channel control box, a composite stirring and cleaning device is arranged at the front end in the silicon-carbon material mixing kettle, and a crushing mechanism is arranged at the rear end in the silicon-carbon material mixing kettle. The composite stirring and cleaning device comprises an inner gear ring arranged in the mixing kettle top cover, and a driving roller arranged in the center of the mixing kettle top cover, wherein the rear end of the driving roller extends to the center of the silicon-carbon material mixing kettle, a plurality of stirring rods are arranged around the surface of the driving roller, the front end of the driving roller extends to the inside of the protection box and is provided with a transmission inclined gear disc, and a driving gear disc is fixedly connected to the inner end surface of the inner gear ring and the outer end surface of the driving roller.

[0007] Preferably, the composite stirring and cleaning device further comprises a transmission gear disc, a supporting roller, a kettle wall cleaning scraper and stirring blades, the transmission gear disc is provided with two, which are respectively arranged at the two sides of the outer end of the driving gear disc, the surfaces of the two transmission gear discs are respectively engaged with the outer end of the driving gear disc and the inner side of the inner gear ring, a supporting roller is respectively connected to the surface center of the two transmission gear discs, the rear end of the supporting roller respectively extends to the two sides of the inner wall of the silicon-carbon material mixing kettle, a kettle wall cleaning scraper is respectively fixedly arranged on one side of the two supporting rollers close to the surface of the inner wall of the silicon-carbon material mixing kettle, the front end of the kettle wall cleaning scraper is attached to the inner wall of the silicon-carbon material mixing kettle, and a plurality of stirring blades are arranged on the other three surfaces of the supporting roller.

[0008] Preferably, a servo motor is fixedly arranged on the upper surface of the protection box, the output end of the servo motor extends to the center of the inside of the protection box and is provided with a driving inclined gear disc, and the outer end of the driving inclined gear disc is engaged with the outer end of the transmission inclined gear disc.

[0009] Preferably, the crushing mechanism comprises a rotating disc, an inclined crushing rod, an arc-shaped material guiding hole and a rotating motor one, the rotating motor one is arranged at the center of the rear end surface of the silicon-carbon material mixing kettle, the output end of the rotating motor one extends to the bottom surface in the silicon-carbon material mixing kettle and is connected with the rotating disc, the arc-shaped material guiding hole is arranged at one side of the outer end of the rotating disc and has a larger inner diameter than the material guiding hole, and a plurality of inclined crushing rods are arranged around the front end surface of the rotating disc.

[0010] Preferably, the upper end of the sealed box is internally fixedly connected with a transmission pipe, a Venturi tube adsorber is fixedly installed on the outer end surface of the transmission pipe, and the other end of the transmission pipe is correspondingly connected to the inside of the flow guide hole, wherein a one-way valve is installed on the outside of the connection between the transmission pipe and the flow guide hole.

[0011] Preferably, the upper end of the sealed box is internally fixedly connected with a transmission pipe, a Venturi tube adsorber is fixedly installed on the outer end surface of the transmission pipe, and the other end of the transmission pipe is correspondingly connected to the inside of the flow guide hole, wherein a one-way valve is installed on the outside of the connection between the transmission pipe and the flow guide hole.

[0012] Preferably, the upper end of the sealed box is internally fixedly connected with a transmission pipe, a Venturi tube adsorber is fixedly installed on the outer end surface of the transmission pipe, and the other end of the transmission pipe is correspondingly connected to the inside of the flow guide hole, wherein a one-way valve is installed on the outside of the connection between the transmission pipe and the flow guide hole.

[0013] Preferably, the vibration device comprises a fixed box, a rotating rod, a centrifugal fixed rod, a linkage tooth disc, a movable connecting piece, a reciprocating pushing column, a rotating motor, and a driving tooth disc; the fixed box is fixedly installed on the inner walls of the sealed box, the rotating rods are connected to the inner end surfaces of the fixed box, the linkage tooth discs are installed on the opposite surfaces of the inner sides of the two rotating rods, the centrifugal fixed rods are fixedly connected to the inner surfaces of the two linkage tooth discs, the movable connecting pieces are movably sleeved on the outer ends of the centrifugal fixed rods, the reciprocating pushing columns are movably connected to the upper ends of the movable connecting pieces and extend to the outer sides of the upper ends of the fixed box, the upper end surfaces of the reciprocating pushing columns abut against the upper end surfaces of the material sieves, and the driving tooth discs are drivingly connected to the outer ends of the two linkage tooth discs, the shafts of the driving tooth discs extend to the outer sides of the sealed box, and the rotating motors are connected to the shafts of the driving tooth discs.

[0014] Preferably, the front end of the fixed support is provided with a fixed rod on each side surface, a guide limiting block is movably sleeved on the outer end of the fixed rod, and the inner side surfaces of the guide limiting blocks are fixedly connected to the outer sides of the front end of the silicon-carbon material mixing kettle.

[0015] Preferably, the kettle body lifting assembly comprises a base, a bidirectional synchronous motor, a screw rod, a sliding plate, a main support rod, an arc plate, a hinge seat and a secondary support rod; the base is fixedly installed at the front end inside the fixed support, the arc plate is arranged at the upper end of the base, the upper end of the arc plate is attached to the lower surface of the silicon-carbon material mixing kettle, limit grooves are respectively arranged at the both sides of the upper surface of the base, guide grooves are respectively arranged at the lower ends of the limit grooves, screw rods are installed in the limit grooves, bidirectional synchronous motors are fixedly connected to the inner sides of the opposite faces of the two screw rods, sliding plates are threadedly sleeved with the outer ends of the two screw rods, the lower ends of the sliding plates extend into the guide grooves, main support rods are respectively connected to the lower end surfaces of the sliding plates, and hinge seats are respectively arranged at the outer end surfaces of the base, wherein the secondary support rods are movably connected to the hinge seats, and the other ends of the secondary support rods are fixedly connected to the outer end surfaces of the main support rods.

[0016] Compared with the prior art, the present application has the following advantages: The prior art stirring device is single-direction or fixed-track stirring, which is prone to mixed dead angles, and the residual raw materials on the kettle wall are difficult to clean, which affects the mixing effect and raw material utilization rate. The device has a "driving roller + planetary support roller" structure of the composite stirring cleaning device, the stirring rod and the stirring blade act on the center and the edge area of the kettle respectively, and 360° dead angle-free mixing is realized. At the same time, the kettle wall cleaning scraper removes the residual raw materials in real time, which not only avoids waste of raw materials, but also ensures uniformity of mixing of silicon-based and carbon-based raw materials, lays a good foundation for subsequent crushing and refinement, and greatly improves the mixing efficiency compared with the prior art, and the raw material utilization rate is increased to more than 95%.

[0017] In the prior art, the mixing, crushing, drying and screening processes are often independent or not well connected, which is prone to problems such as secondary pollution of materials, uneven particle size and excessive moisture content. The device realizes closed transmission from the mixing kettle to the sealed box body through the Venturi tube adsorber and the one-way valve to avoid pollution. The vibrating screen hopper is matched with the crushed solid ball to complete further crushing and screening during the vibration process. The hot air drying box uniformly supplies heat through the heat dissipation copper plate and cooperates with the air suction fan to form circulating hot air, so that the moisture content of the material is stably controlled below 0.5%. The whole process collaborative operation effectively solves the problem of large fluctuation of product quality in the prior art.

[0018] The prior art relies on manual intervention to adjust equipment parameters (such as the height of the mixing kettle, the feeding ratio and the like), which is cumbersome and has safety hazards, the device adjusts the feeding ratio through an intelligent double-channel control box, the kettle body lifting assembly is assisted by a bidirectional synchronous motor and a linkage support structure, the height of the mixing kettle is automatically and stably adjusted, the double limiting of the guide limiting block and the limiting sliding block is used to ensure the safety and reliability of the lifting process, each process is driven by a motor to realize linkage control, the manual operation link is reduced, the labor intensity is reduced, the pollution risk caused by manual contact with the material is avoided, and the device is more suitable for large-scale production requirements. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the application; Figure 2 It is a schematic diagram of the internal structure of the sealing box of the application; Figure 3 It is a schematic diagram of the structure of the vibration device of the application; Figure 4 It is a schematic diagram of the structure of the kettle body lifting assembly of the application; Figure 5 It is a schematic diagram of the structure of the composite stirring and cleaning device of the application; Figure 6 It is a schematic diagram of the structure of the crushing mechanism of the application.

[0020] In the figure: 1, fixed support; 11, fixed rod; 12, guide limiting block; 2, silicon-carbon material mixing kettle; 21, mixing kettle top cover; 22, protection box; 23, intelligent double-channel control box; 24, silicon-based raw material feeding pipe; 25, carbon-based raw material feeding pipe; 3, sealing box; 31, hot air drying box; 32, inclined guide plate; 33, material sieve; 34, crushed solid ball; 35, silicon-carbon material storage box; 36, mounting plate; 37, drying heating pipe; 38, heat dissipation copper plate; 39, suction fan; 4, kettle body lifting assembly; 41, base; 42, bidirectional synchronous motor; 43, screw rod; 44, sliding plate; 45, main support rod; 46, arc plate; 47, hinged seat; 48, auxiliary support rod; 5, composite stirring and cleaning device; 51, driving roller; 52, driving toothed disc; 53, transmission inclined toothed disc; 54, transmission toothed disc; 55, supporting roller; 56, kettle wall cleaning scraper; 57, stirring blade; 58, servo motor; 59, driving inclined toothed disc; 510, stirring rod; 511, inner tooth ring; 6, kettle body fixing hoop; 61, limiting sliding block; 7, transmission pipe; 71, Venturi tube adsorber; 72, one-way valve; 8, vibration device; 81, fixed box; 82, rotating rod; 83, centrifugal fixed rod; 84, linkage toothed disc; 85, movable connecting piece; 86, reciprocating push column; 87, rotary motor; 88, driving toothed disc; 9, crushing mechanism; 91, rotating disc; 92, inclined crushing rod; 93, arc-shaped guide hole; 94, rotary motor. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0022] Please refer to Figures 1-6As shown, the present application provides a technical scheme: a silicon-carbon composite negative electrode material preparation device, comprising a fixed support 1, the outer end of the fixed rod 11 installed on both sides of the front end of the fixed support 1 is slidably sleeved with a guide limiting block 12, the inner side is connected with the outer side of the front end of a silicon-carbon material mixing kettle 2 to realize guide limiting, the outer end of both sides of the kettle body fixing hoop 6 on the outer side of the rear end of the silicon-carbon material mixing kettle 2 is connected with a limiting sliding block 61, and the lower end is sleeved on the upper surface of the rear end of the fixed support 1 to play an auxiliary limiting role; the kettle body lifting assembly 4 is arranged at the front end of the inside of the fixed support 1, the arc-shaped plate 46 on the base 41 is attached to the lower surface of the silicon-carbon material mixing kettle 2, the bidirectional synchronous motor 42 drives the screw rod 43 to make the sliding plate 44 drive the main support rod 45 and the auxiliary support rod 48 to link up, so that the mixing kettle lifting adjustment is realized, the sealing box body 3 is arranged on the outer side of the rear end of the silicon-carbon material mixing kettle 2, the hot air drying box 31 is connected on one side of the outer side, and the inside is provided with the air suction fan 39 and the mounting plate 36; the drying heating pipe 37 coiled on the inner side is connected with the heat dissipation copper plate 38, the upper end air inlet groove communicates with the sealing box body 3, and dry hot air can be generated and conveyed; the mixing kettle top cover 21 is connected with the front end surface of the mixing kettle, the front end is connected with the protection box 22, the driving inclined surface tooth disc 59 at the output end of the servo motor 58 is engaged with the transmission inclined surface tooth disc 53 to realize transmission, the rear end surface has a material guiding hole at the lower end, and the upper end of the front end is provided with the intelligent double-channel control box 23, the silicon-based raw material feeding pipe 24 and the carbon-based raw material feeding pipe 25 are connected with the upper end of the intelligent double-channel control box 23 to control the raw material feeding; the composite stirring and cleaning device 5 is arranged at the front end of the inside, comprising an inner tooth ring 511 in the mixing kettle top cover 21 and a driving roller 51, the surface of the driving roller 51 is provided with a stirring rod 510, the front end is connected with the transmission inclined surface tooth disc 53, the outer end surface driving tooth disc 52 is engaged with the transmission tooth disc 54 on both sides, the transmission tooth disc 54 is connected with the support roller 55, the kettle wall cleaning scraper 56 on one side of the support roller 55 is attached to the kettle wall to play a cleaning role, and the other three stirring blades 57 cooperate with the stirring rod 510 to realize the full stirring of the material; the crushing mechanism 9 is arranged at the rear end of the inside of the silicon-carbon material mixing kettle 2, comprising a rotating motor 94, a rotating disc 91, an inclined crushing rod 92 and an arc-shaped material guiding hole 93, the rotating motor 94 drives the rotating disc 91 to crush the material by the inclined crushing rod 92, and the arc-shaped material guiding hole 93 is used for guiding the material out; the transmission pipe 7 in the upper end of the sealing box body 3 is externally provided with the venturi tube adsorber 71, the other end is connected with the flow guiding hole and is provided with the one-way valve 72 at the connection position to control the one-way transmission of the material; the internal upper end inclined flow guiding plate 32 guides the material to the lower end material sieve 33, the vibration device 8 on both sides of the upper end of the material sieve 33 is driven by the rotating motor 87 to drive the driving tooth disc 88 to drive the linkage tooth disc 84, so that the centrifugal fixed rod 83 drives the reciprocating push column 86 to push the material sieve 33 to vibrate through the movable connecting piece 85, and the internal crushing solid ball 34 is further used for crushing and screening the material; one side of the silicon-carbon material storage box 35 in the lower end sliding groove of the sealing box body 3 extends to the outside to collect the finished product.

[0023] According to Figure 1 and Figure 2As shown, the silicon-carbon material mixing kettle 2 is movably installed in the fixed support 1, the front end surface is fixedly connected with the mixing kettle top cover 21, the front end of the top cover is connected with the protection box 22, the rear end surface is provided with a material guiding hole at the lower end, the upper end front end surface is provided with an intelligent double-channel control box 23, the upper side is respectively connected with a silicon-based raw material feeding pipe 24 and a carbon-based raw material feeding pipe 25; the inside front end is provided with a composite stirring and cleaning device 5, the rear end is provided with a crushing mechanism 9, which is a silicon-carbon material mixing, stirring and crushing reaction container, the sealed box body 3 is arranged outside the rear end of the silicon-carbon material mixing kettle 2, the outer side is fixedly connected with a hot air drying box 31, the upper end inside is fixedly connected with a transmission pipe 7, the inside upper end one side surface is fixedly installed with an inclined flow guide plate 32, the lower end is provided with a material sieve 33, the sieve upper end two sides are provided with a vibrating device 8, a plurality of crushed solid balls 34 are placed inside, the lower end is provided with a chute, the chute is placed with a silicon-carbon material storage box 35 (one side extends to the lower end outside of the sealed box body 3), which is used for receiving and screening, drying and collecting the transmission material, the kettle body fixing hoop 6 is fixedly installed outside the rear end of the silicon-carbon material mixing kettle 2, the outer end two sides are respectively connected with limiting sliding blocks 61, the lower end of the limiting sliding blocks 61 is slidably sleeved on the upper surface of the rear end of the fixed support 1, which plays a fixed and sliding limiting role for the silicon-carbon material mixing kettle 2, one end of the transmission pipe 7 is correspondingly connected with the material guiding hole of the silicon-carbon material mixing kettle 2, the other end is fixedly connected with the upper end inside of the sealed box body 3, the outer end surface is fixedly installed with a Venturi tube adsorber 71, a one-way valve 72 is arranged outside the connection position of the material guiding hole, which is used for realizing the directional material transmission and adsorption assistance from the silicon-carbon material mixing kettle 2 to the sealed box body 3.

[0024] According to Figure 1 and Figure 3 As shown, the vibrating device 8, the fixed boxes 81 are respectively fixedly installed on the inner walls of the sealed box body 3, the inside two end surfaces are respectively connected with rotating rods 82, the inside opposite surfaces of the two rotating rods 82 are installed with linkage tooth discs 84, the inside surface of the linkage tooth disc 84 is fixedly connected with a centrifugal fixed rod 83, the outer end of the centrifugal fixed rod 83 is movably sleeved with a movable connecting piece 85, the upper end of the movable connecting piece 85 extends to the upper end outside of the fixed box 81 and is movably connected with a reciprocating push column 86, the upper end surface of the reciprocating push column 86 is respectively abutted on the upper end two side surfaces of the material sieve 33; the outer ends of the two linkage tooth discs 84 are meshingly transmissionally connected with a driving tooth disc 88, the shaft center of the driving tooth disc 88 extends to the outside of the sealed box body 3 and is connected with a rotating motor 87, the driving tooth disc 88 is driven by the rotating motor 87, the linkage tooth disc 84 and the centrifugal fixed rod 83 are driven to move, the movable connecting piece 85 drives the reciprocating push column 86 to reciprocatingly push the material sieve 33, so as to realize the sieve vibration to assist the material screening.

[0025] According to Figure 1 and Figure 4As shown, the kettle body lifting assembly 4, the base 41 is fixedly installed in the inner front end of the fixed support 1, the arc-shaped plate 46 on the upper end is attached to the lower surface of the silicon-carbon material mixing kettle 2, the limiting grooves are opened on the upper surface of the base 41, the screw rods 43 are installed in the limiting grooves, the opposite sides of the inner sides of the two screw rods 43 are fixedly connected with the bidirectional synchronous motor 42, the outer ends are respectively threaded with the sliding plates 44, the lower ends of the sliding plates 44 extend into the guide grooves below the limiting grooves, the main support rods 45 connected to the lower ends of the two sides of the sliding plates 44 are fixedly connected with the lower ends of the arc-shaped plates 46; the hinge seats 47 on the outer sides of the base 41 are movably connected with the auxiliary support rods 48, the other ends of the auxiliary support rods 48 are fixedly connected with the outer end surfaces of the main support rods 45, the screw rods 43 are driven to rotate by the bidirectional synchronous motor 42, the sliding plates 44 are driven to move along the guide grooves, the main support rods 45 and the auxiliary support rods 48 are linked, and the silicon-carbon material mixing kettle 2 supported by the arc-shaped plate 46 is stably lifted.

[0026] According to Figure 1 , Figure 5 and Figure 6 , the composite stirring and cleaning device 5 comprises the inner tooth ring 511 and the driving roller 51 in the center of the mixing kettle top cover 21, the driving roller 51 extends to the center of the silicon-carbon material mixing kettle 2 inside, a plurality of stirring rods 510 are arranged on the surface of the driving roller 51, the front end of the driving roller 51 extends into the protection box 22 and is provided with the transmission inclined tooth disc 53, and the outer end surface of the driving roller 51 is fixedly provided with the driving tooth disc 52 matched with the inner tooth ring 511; the transmission tooth disc 54 is further arranged, is engaged with the inner tooth ring 511 on the outer sides of the driving tooth disc 52, and the support roller 55 connected to the surface center of the transmission tooth disc 54 extends to the two sides of the inner wall of the mixing kettle; the kettle wall cleaning scraper 56 attached to the kettle wall is arranged on one side of the support roller 55, and a plurality of stirring blades 57 are arranged on the other three sides; the driving inclined tooth disc 59 of the output end of the servo motor 58 on the upper end of the protection box 22 is engaged with the transmission inclined tooth disc 53, the driving roller and the support roller are linked by the servo motor, the material stirring and the kettle wall cleaning are synchronously performed, the pulverizing mechanism 9 comprises the rotating motor one 94 in the center of the rear end surface of the silicon-carbon material mixing kettle 2, the output end of the rotating motor one 94 extends to the bottom surface of the mixing kettle inside and is connected with the rotating disc 91, the arc-shaped material guide hole 93 with a larger inner diameter than the flow guide hole is arranged on one side of the outer end of the rotating disc 91, a plurality of inclined pulverizing rods 92 are arranged on the front end surface of the rotating disc 91, the rotating disc is driven to rotate by the rotating motor one, the material is pulverized by the inclined pulverizing rods, and the pulverized material can be guided out through the arc-shaped material guide hole.

[0027] The effect achieved by the whole mechanism is: Silicon-based and carbon-based raw materials are fed through silicon-based raw material feed pipe 24 and carbon-based raw material feed pipe 25, respectively. The feeding amount and feeding speed are controlled by intelligent dual-channel control box 23 to ensure that the two raw materials enter the silicon-carbon material mixing vessel 2 in a preset ratio. Then, the servo motor 58 at the top of the protective box 22 is started, and the drive inclined gear disk 59 at its output end meshes with the transmission inclined gear disk 53 to drive the active roller 51 to rotate. The stirring rod 510 on the surface of the active roller 51 stirs the raw materials in the central area of ​​the vessel. At the same time, the active gear disk 52 at the outer end of the active roller 51 rotates with it, driving the transmission gear disks 54 meshing on both sides to rotate. The transmission gear disks 54 then mesh with the inner toothed ring 511 inside the mixing vessel top cover 21. The side meshing forms a planetary transmission structure, causing the transmission gear disk 54 to both revolve and rotate, thereby driving the rear support roller 55 to move synchronously. The stirring blades 57 on the surface of the support roller 55, except for the side close to the vessel wall, stir the raw materials in the edge area of ​​the vessel, achieving all-round uniform mixing. Simultaneously, the vessel wall cleaning scraper 56 on one side of the support roller 55 moves with the support roller, scraping away the raw materials adhering to the inner wall of the silicon-carbon material mixing vessel 2 in real time, preventing material residue from affecting the mixing effect. After mixing, the rotary motor 94 at the center of the rear surface of the silicon-carbon material mixing vessel 2 starts, and its output drives the rotating disk 91 to rotate. The inclined pulverizing rod 92 on the front surface of the rotating disk 91 pulverizes and refines the mixed material. Material is discharged through the arc-shaped guide hole 93 at the outer end of the rotating disk 91 to the guide hole; subsequently, the Venturi tube adsorber 71 at the outer end of the transmission pipe 7 operates, creating a negative pressure inside the transmission pipe 7, drawing the pulverized material into the transmission pipe 7 through the guide hole. The one-way valve 72 ensures that the material is transferred unidirectionally to the inside of the sealed box 3. The material is guided by the inclined guide plate 32 at the upper end of the sealed box 3 and falls into the material sieve 33 at the lower end; at the same time, the rotary motor 87 of the vibrating device 8 starts, driving the drive toothed disc 88 to rotate, which in turn drives the meshing linkage toothed disc 84 on both sides to rotate. The centrifugal fixing rod 83 on the inner side of the linkage toothed disc 84 rotates with it, causing the movable connecting piece 85 to drive the reciprocating push column 86 to reciprocate, pushing the material sieve 33 to produce Vibration occurs, and the solid crushing balls 34 inside the material sieve 33 further crush and screen the material, making the material particles more uniform. During this process, the drying heating tube 37 inside the hot air drying box 31 is energized and heats up. The heat dissipation copper plate 38 dissipates the heat into the hot air drying box 31. The suction fan 39 works to send hot air into the sealed box 3 through the air inlet slot to dry the material in the material sieve 33 and remove the moisture from the material. Finally, the qualified material after drying and screening falls into the silicon carbon material storage box 35 at the bottom of the sealed box 3, completing the preparation of the silicon carbon composite negative electrode material. When the storage box is full, it can be pulled out from the outside of the bottom of the sealed box 3 for material collection.In addition, the vessel lifting assembly 4 can adjust the height of the silicon-carbon material mixing vessel 2 as needed. The bidirectional synchronous motor 42 drives the screw 43 to rotate, causing the sliding plate 44 to move along the guide groove, thus linking the main support rod 45 and the auxiliary support rod 48 to achieve stable lifting and lowering of the mixing vessel supported by the arc-shaped plate 46. The guide limiting block 12 outside the fixed rod 11 and the limiting slider 61 outside the vessel fixing hoop 6 ensure stability during the lifting and lowering process of the mixing vessel.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A silicon-carbon composite anode material preparation apparatus, comprising a fixed support (1), a silicon-carbon material mixing vessel (2), a sealed box (3), and a composite stirring and cleaning device (5), characterized in that: The silicon-carbon material mixing vessel (2) is movably installed inside the fixed support (1). A vessel lifting assembly (4) is provided at the front end of the fixed support (1). A sealed box (3) is provided on the outer side of the rear end of the silicon-carbon material mixing vessel (2). A hot air drying box (31) is fixedly connected to one side of the outer side of the sealed box (3). A mixing vessel top cover (21) is fixedly connected to the front end surface of the silicon-carbon material mixing vessel (2). A protective box (22) is connected to the front end of the mixing vessel top cover (21). A material guide hole is opened at the lower end of the rear end surface of the silicon-carbon material mixing vessel (2). An intelligent dual-channel control box (23) is installed on the upper front end surface of the silicon-carbon material mixing vessel (2). A silicon-based raw material feed pipe (24) and a carbon-based raw material feed pipe (25) are respectively connected to the upper surface of the intelligent dual-channel control box (23). A composite stirring and cleaning device (5) is provided at the front end of the silicon-carbon material mixing vessel (2). A crushing mechanism (9) is installed at the rear end of the silicon-carbon material mixing vessel (2). The composite stirring and cleaning device (5) includes an internal toothed ring (511) disposed inside the mixing vessel top cover (21). An active roller (51) is also disposed in the center inside the mixing vessel top cover (21). The rear end of the active roller (51) extends to the center inside the silicon carbide mixing vessel (2). Several stirring rods (510) are arranged around its surface. The front end of the active roller (51) extends to the inside of the protective box (22) and is equipped with a transmission inclined toothed disc (53). An active toothed disc (52) is fixedly connected inside the internal toothed ring (511) and on the outer end surface of the active roller (51).

2. The apparatus for preparing silicon-carbon composite anode material according to claim 1, characterized in that: The composite stirring and cleaning device (5) also includes a transmission gear disc (54), a support roller (55), a vessel wall cleaning scraper (56), and stirring blades (57). The transmission gear disc (54) is configured as two, which are respectively installed on both sides of the outer end of the active gear disc (52). Their surfaces are respectively meshed with the outer end of the active gear disc (52) and the inner side of the inner gear ring (511). Support rollers (55) are respectively connected to the center of the surface of the two transmission gear discs (54). The rear ends of the support rollers (55) extend to both sides of the inner wall of the silicon carbide mixing vessel (2). A vessel wall cleaning scraper (56) is fixedly installed on one side of the support rollers (55) close to the inner wall surface of the silicon carbide mixing vessel (2). The front end of the vessel wall cleaning scraper (56) is in contact with the inner wall of the silicon carbide mixing vessel (2). Several stirring blades (57) are arranged on the other three sides of the support rollers (55).

3. The apparatus for preparing silicon-carbon composite anode material according to claim 1, characterized in that: A servo motor (58) is fixedly installed on the upper surface of the protective box (22). The output end of the servo motor (58) extends to the center of the interior of the protective box (22) and is equipped with a drive inclined gear plate (59). The outer end of the drive inclined gear plate (59) meshes with the outer end of the transmission inclined gear plate (53).

4. The apparatus for preparing silicon-carbon composite anode material according to claim 1, characterized in that: The crushing mechanism (9) includes a rotating disk (91), an inclined crushing rod (92), an arc-shaped material guide hole (93), and a rotary motor (94). The rotary motor (94) is installed in the center of the rear end surface of the silicon carbide mixing vessel (2). The output end of the rotary motor (94) extends to the bottom surface inside the silicon carbide mixing vessel (2) and is connected to the rotating disk (91). An arc-shaped material guide hole (93) is opened on one side of the outer end of the rotating disk (91), and the inner diameter of the arc-shaped material guide hole (93) is larger than that of the guide hole. Several inclined crushing rods (92) are arranged around the front end surface of the rotating disk (91).

5. The apparatus for preparing silicon-carbon composite anode material according to claim 1, characterized in that: The upper end of the sealed box (3) is fixedly connected to a transmission pipe (7), and a Venturi tube adsorber (71) is fixedly installed on the outer end surface of the transmission pipe (7). The other end of the transmission pipe (7) is connected to the inside of the guide hole. A one-way valve (72) is installed on the outside of the connection between the transmission pipe (7) and the guide hole.

6. The apparatus for preparing silicon-carbon composite anode material according to claim 1, characterized in that: An inclined guide plate (32) is fixedly installed on one side of the upper end of the sealed box (3). A material sieve hopper (33) is provided at the lower end of the inclined guide plate (32). Vibration devices (8) are respectively provided on both sides of the upper end of the material sieve hopper (33). Several crushing solid balls (34) are placed inside the material sieve hopper (33). A sliding groove is opened at the lower end of the sealed box (3). A silicon carbide material storage box (35) is placed inside the sliding groove. One side of the silicon carbide material storage box (35) extends to the outer side of the lower end of the sealed box (3).

7. The apparatus for preparing silicon-carbon composite anode material according to claim 1, characterized in that: The hot air drying box (31) is equipped with suction fans (39) on both sides of the bottom surface. The hot air drying box (31) is equipped with mounting plates (36) at both the top and bottom. Drying heating tubes (37) are coiled and connected to the inner side of the mounting plates (36). Several heat dissipation copper plates (38) are connected to the surface of the drying heating tubes (37). An air inlet groove is opened on one side of the upper end of the hot air drying box (31), and the air inlet groove extends to the inner wall of one side of the upper end of the sealed box body (3).

8. The apparatus for preparing silicon-carbon composite anode material according to claim 6, characterized in that: The vibration device (8) includes a fixed box (81), a rotating rod (82), a centrifugal fixed rod (83), a linkage gear disc (84), a movable connecting piece (85), a reciprocating push column (86), a rotary motor (87), and a drive gear disc (88). The fixed box (81) is fixedly installed on both sides of the inner wall of the sealed box (3). The rotating rod (82) is connected to the inner end surfaces of the fixed box (81). The linkage gear disc (84) is installed on the inner opposite surfaces of the two rotating rods (82). The inner surfaces of the two linkage gear discs (84) are fixedly connected to the rotating rods (82). A centrifugal fixing rod (83) is attached, and a movable connecting piece (85) is movably sleeved on the outer end of the centrifugal fixing rod (83). The upper end of the movable connecting piece (85) extends to the outer side of the upper end of the fixed box (81) and is movably connected to a reciprocating push column (86). The upper surface of the reciprocating push column (86) abuts against the upper two sides of the material screen hopper (33). A drive gear plate (88) is meshed and connected to the outer end of the two linkage gear plates (84). The shaft of the drive gear plate (88) extends to the outer side of the sealed box (3) and is connected to a rotary motor (87).

9. The apparatus for preparing silicon-carbon composite anode material according to claim 1, characterized in that: Fixed rods (11) are installed on both sides of the front end of the fixed bracket (1). Guide limiting blocks (12) are slidably sleeved on the outer ends of the fixed rods (11). The inner surfaces of the guide limiting blocks (12) are fixedly connected to the outer sides of the front end of the silicon carbide mixing vessel (2). A vessel body fixing hoop (6) is fixedly installed on the outer side of the rear end of the silicon carbide mixing vessel (2). Limiting sliders (61) are connected to both sides of the outer end of the vessel body fixing hoop (6), and the lower end of the limiting sliders (61) is slidably sleeved on the upper surface of the rear end of the fixed bracket (1).

10. The apparatus for preparing silicon-carbon composite anode material according to claim 1, characterized in that: The vessel lifting assembly (4) includes a base (41), a bidirectional synchronous motor (42), a screw (43), a sliding plate (44), a main support rod (45), an arc plate (46), a hinge seat (47), and a secondary support rod (48). The base (41) is fixedly installed inside the front end of the fixed bracket (1). An arc plate (46) is provided on the upper end of the base (41). The upper end of the arc plate (46) is attached to the lower surface of the silicon-carbon material mixing vessel (2). Limiting grooves are opened on both sides of the upper surface of the base (41). Guide grooves are opened at the lower end of the limiting grooves. Screws (43) are installed inside the limiting grooves. 3) A bidirectional synchronous motor (42) is fixedly connected to the inner opposite surface. Slide plates (44) are threaded on the outer ends of the two screws (43). The lower end of the slide plate (44) extends into the interior of the guide groove. Main support rods (45) are connected to the two sides of the lower end of the slide plate (44). The upper ends of the main support rods (45) are fixedly connected to the lower end surface of the arc plate (46). Hinges (47) are installed on the two sides of the outer end of the base (41). A secondary support rod (48) is movably connected inside the hinges (47). The other end of the secondary support rod (48) is fixedly connected to the center of the outer end surface of the main support rod (45).

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