Bipolar plate multi-stage segmenting and screening device
The raw materials for vanadium redox flow batteries are processed to achieve uniform particle size by using a multi-stage cutting and screening device. This solves the problem of uneven particle size distribution, ensures the extrusion quality and performance of the bipolar plates, and enables automated production.
Patent Information
- Application Number
- CN202422565709.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-10-23
AI Technical Summary
During the fabrication of bipolar plates for vanadium redox flow batteries, uneven particle size distribution after raw material mixing leads to unstable extrusion speed and poor quality, affecting the conductivity and electrolyte permeability of the bipolar plates.
A multi-stage cutting and screening device is adopted, including a control system, a cutting unit and a screening unit. The raw materials are cut into multiple stages by the first cutting mechanism and the second cutting mechanism, and the particle size of the raw materials is screened by the screening drum assembly to ensure the uniformity of particle size.
It improved the uniformity of raw material particle size, stabilized the extrusion process, enhanced the manufacturing quality and performance of bipolar plates, and reduced the intensity of manual labor.
Smart Images
Figure CN223556158U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to bipolar plate processing technical field, concretely relates to a bipolar plate multistage cutting screening device. BACKGROUND
[0002] Bipolar plates play a crucial role in energy storage and conversion systems, especially in Vanadium Redox Batteries (VRB). As a highly efficient, long-lasting, and environmentally friendly large-scale energy storage technology, the working principle of VRB is based on the reversible oxidation-reduction reaction of vanadium ions between different valence states, and bipolar plates, as one of the core components of the battery, are responsible for separating the positive and negative electrolyte, collecting current, and providing electrolyte flow channels.
[0003] Bipolar plates for VRB need to have high electrical conductivity, good corrosion resistance and chemical stability, as well as suitable electrolyte flow design to ensure efficient operation and long-term stability of the battery. In the production process of bipolar plates, raw material mixing and extrusion are two key process steps. Raw material mixing ensures the uniformity of the composition of the bipolar plate material, while the extrusion process determines the shape, size and internal structure of the bipolar plate.
[0004] However, in actual production, the particle size distribution of the raw material after mixing is often uneven, and uneven particle size distribution of the raw material will lead to unstable extrusion pressure during the extrusion process, thereby affecting the extrusion speed and extrusion quality. Large particles may block the mold, causing extrusion to stop or the surface of the extrudate to be rough, while small particles may increase the wear of the extruder and reduce the service life of the equipment. In addition, uneven particle size distribution will also affect the density and porosity of the bipolar plate, thereby affecting its electrical conductivity and electrolyte permeability. SUMMARY
[0005] To solve the problem of uneven particle size distribution of the raw material after mixing in the production of bipolar plates for VRB, thereby affecting the subsequent extrusion speed and extrusion quality, the utility model provides a bipolar plate multistage cutting screening device.
[0006] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:
[0007] A bipolar plate multistage cutting screening device is provided, which includes a control system and a device body connected to the control system. The device body includes a base, a cutting unit and a screening unit arranged on the base, and the screening unit is connected to the cutting unit.
[0008] The cutting unit comprises a box body, which is sequentially provided with a feeding hopper, a first cutting cavity and a second cutting cavity from top to bottom, the first cutting cavity is provided with a first feeding port at the top end and a first discharging port at the lower end, and a first cutting mechanism is arranged in the first cutting cavity, and the first feeding port is connected with the discharging end of the feeding hopper;
[0009] The screening unit comprises a first driving assembly and a screening drum assembly connected with the first driving assembly, and the feeding end of the screening drum assembly is connected with the second discharging port.
[0010] The beneficial effects of the above technical scheme are as follows: the bipolar plate multi-stage cutting and screening device can feed the mixed raw materials into the first cutting cavity through the feeding hopper and the first feeding port, and then the raw materials are preliminarily cut by the first cutting mechanism in the first cutting cavity, and then the cut raw materials are fed into the second cutting cavity through the first discharging port and the second feeding port, and then the raw materials are secondarily cut by the second cutting mechanism in the second cutting cavity, and then the secondarily cut raw materials are fed into the screening drum assembly of the screening unit through the second discharging port; the first cutting mechanism can preliminarily crush the raw materials in the first cutting cavity and decompose them into smaller particles, the second cutting mechanism can further subdivide the preliminarily crushed raw materials to make the particle size more uniform, and the screening unit can screen the cut raw materials by rotation to separate raw materials of different particle sizes, retain raw materials meeting the production requirements, improve the stability of the subsequent extrusion process, and improve the manufacturing quality of the bipolar plate.
[0011] The control system is integrated with the cutting unit and the screening unit to realize the synergistic effect of cutting and screening, the cutting unit adopts a multi-stage cutting structure to decompose the raw materials with large volume into smaller particles, and can further subdivide the preliminarily crushed raw materials to make the particle size of the raw materials more uniform, effectively improving the particle size uniformity of the raw materials, the screening unit can screen the cut raw materials to avoid the raw materials with excessively large particle size from entering the subsequent operation, providing quality guarantee for the raw materials for the subsequent extrusion molding, and ensuring the quality of the bipolar plate during manufacturing.
[0012] Further, the first cutting mechanism comprises a second driving assembly and a first cutting assembly connected with the second driving assembly, the first cutting assembly comprises a cutting box and first and second crushing shafts arranged in the cutting box, and a plurality of first crushing blades are arranged on the surfaces of the first and second crushing shafts;
[0013] The cutting box comprises a first side frame and a second side frame arranged correspondingly, a plurality of comb teeth are arranged on the second side frame, and comb holes are formed between the comb teeth, and the comb holes are arranged correspondingly with the first crushing blades.
[0014] The beneficial effects of the above technical scheme are that the cutting box is used for placing and fixing the first crushing shaft and the second crushing shaft, ensuring that the cutting is carried out in a closed and safe environment; and under the control of the second driving assembly, the first crushing shaft and the second crushing shaft can rotate simultaneously, driving the first crushing blade to rotate, so that the rapid crushing of large raw materials can be realized, and the comb teeth and the comb holes can simultaneously play the roles of screening and guiding, which not only ensures the smooth discharge of the crushed raw materials, but also performs the primary screening on the particle size of the crushed raw materials, ensuring the uniformity of the particle size of the final product, and further realizing the guarantee of the performance of the bipolar plate.
[0015] Further, the second driving assembly includes a second driving motor, a first rotating shaft is arranged at an output end of the second driving motor, a first pulley is arranged on the first rotating shaft, the first pulley is connected with a second pulley through a first V-belt, the second pulley is arranged on the first crushing shaft, a first gear is arranged at one end of the first crushing shaft close to the second pulley, the first gear is in meshing connection with a second gear, and the second gear is arranged on the second crushing shaft.
[0016] The beneficial effects of the above technical scheme are that when the second driving motor is started under the control of the control system, the first rotating shaft can transmit the rotating power of the second driving motor to the first pulley, the first pulley transmits the rotating power to the second pulley through the first V-belt, driving the first crushing shaft to rotate, and the first crushing shaft transmits the rotating power to the second crushing shaft through the gear meshing, so as to realize the synchronous rotation of the first crushing shaft and the second crushing shaft, ensuring the cooperation and consistency of the first cutting mechanism in the crushing process, and further improving the crushing efficiency and the particle size uniformity of the bipolar plate raw material.
[0017] Further, the second cutting mechanism includes a third crushing shaft, a plurality of fixed bases are arranged on the third crushing shaft, and a plurality of second crushing blades are arranged on the fixed bases; a third pulley is arranged at one end of the third crushing shaft, and the third pulley is connected with the first pulley through a second V-belt.
[0018] The beneficial effects of the above technical scheme are that when the second driving motor is started, the rotating power can be transmitted to the third crushing shaft through the first pulley, the first V-belt and the third pulley, so that the third crushing shaft rotates and drives the second crushing blades arranged thereon to rotate, thereby performing secondary cutting on the raw materials preliminarily crushed by the first cutting mechanism, so that the bipolar plate raw material has better particle size uniformity, and the production quality of the bipolar plate is ensured; in addition, the number and arrangement mode of the second crushing blades can be selected and arranged according to production requirements, further ensuring the crushing effect and the particle size uniformity.
[0019] Further, the screening drum assembly comprises a frame and a screening drum arranged on the frame; a collecting box is arranged on one side of the frame close to the base; fixed base plates are arranged at both ends of the frame; support rotating wheels are arranged at both ends of the fixed base plates; third rotating shafts are arranged in the middle of the support rotating wheels; and second sprockets are arranged on the third rotating shafts.
[0020] Screening drums are arranged at both ends of the frame, the surfaces of the screening drums are provided with screen holes, transmission rails are arranged on the screening drums, and the transmission rails are rotationally connected with the support rotating wheels.
[0021] The beneficial effects of the above technical solutions are as follows: under the driving of the first driving assembly, the rotation of the screening drum is driven, the screening of the particle size of the raw material is realized, the screen holes can be adjusted according to actual needs, the screening needs of raw materials with different particle sizes are met, raw materials that do not meet the screening requirements are output from the discharge end of the screening drum, and the screened raw materials are collected in the collecting box, which is beneficial to unified conveying to the subsequent extrusion process, and ensures the uniformity of the particle size and the quality during extrusion.
[0022] Further, the first driving assembly comprises a first driving motor, a second rotating shaft is arranged on the output end of the first driving motor, a first sprocket is arranged on the end of the second rotating shaft away from the first driving motor, and the first sprocket is connected with the second sprocket through a chain.
[0023] The beneficial effects of the above technical solutions are as follows: when the first driving motor is started, the second rotating shaft transmits the power of the first driving motor to the first sprocket, the first sprocket transmits the power to the second sprocket through the chain, the second sprocket transmits the power to the third rotating shaft, the third rotating shaft drives the support rotating wheel to rotate, the support rotating wheel drives the screening drum to rotate through the transmission rail, the particle size screening of the raw material after the second cutting is realized, and the uniformity of the particle size of the raw material is ensured.
[0024] Further, a third discharge port is arranged at the discharge end of the screening drum, and a third feeding port is arranged at the feeding end of the screening drum, the third feeding port is connected with the second discharge port through a discharge pipeline.
[0025] The beneficial effects of the above technical solutions are as follows: the raw material after the second cutting by the second cutting mechanism enters the screening drum through the second discharge port, the discharge pipeline and the third feeding port, the raw material meeting the particle size requirement enters the collecting box after being screened by the screening drum, and the raw material not meeting the particle size requirement is output and collected through the third discharge port, which reduces the manual work intensity, improves the production efficiency and product quality.
[0026] Further, the inclination angle between the feeding end and the discharge end of the screening drum is 15-30°.
[0027] The beneficial effects of the above technical scheme are that: by setting the inclination angle of the feeding end and the discharging end of the screening cylinder to be 15-30°, the cut raw materials are evenly distributed in the screening cylinder, and the clogging of the raw materials in the screening process is reduced, the excessive accumulation or jamming of the raw materials in the screening cylinder is avoided, and the screening efficiency and quality of the raw materials are effectively improved.
[0028] Further, the upper part of the frame is provided with a sealing cover.
[0029] The beneficial effects of the above technical scheme are that: the sealing cover seals the screening cylinder, prevents the leakage of dust, debris and other impurities in the screening process, protects the health of the operators, and reduces the impact on the surrounding environment.
[0030] Further, a sieve plate is arranged between the first discharging port and the second feeding port.
[0031] The beneficial effects of the above technical scheme are that: the sieve plate can preliminarily screen the raw materials cut by the first cutting mechanism, ensure that the raw materials entering the second cutting cavity have relatively uniform particle size, facilitate the operation of the second cutting mechanism, effectively improve the overall cutting efficiency and screening efficiency, and ensure the quality of the bipolar plate production.
[0032] In summary, the bipolar plate multi-stage cutting and screening device has the following beneficial effects:
[0033] (1) The bipolar plate multi-stage cutting and screening device can realize automatic processing of raw material cutting and screening through the control system, reduce the labor intensity, and effectively ensure the uniformity of the particle size of the raw materials through multi-stage cutting and screening, providing quality guarantee for the subsequent extrusion molding.
[0034] (2) The first cutting mechanism in the device can realize rapid crushing of raw materials with large volume through the synchronous rotation of the first crushing shaft and the second crushing shaft, the comb teeth and the comb holes can simultaneously play the roles of screening and guiding, ensuring that the raw materials after the initial crushing are smoothly discharged, and the particle size of the crushed raw materials is initially screened.
[0035] (3) The second cutting mechanism in the device can further subdivide the raw materials preliminarily crushed by the first cutting mechanism, making the particle size of the raw materials more uniform, and the second cutting mechanism is connected with the first pulley through the second V-belt, realizing the collaborative crushing of the second cutting mechanism and the first cutting mechanism, and effectively improving the cutting and crushing efficiency.
[0036] (4) The screening unit in this device can screen the raw materials after secondary cutting through the screening cylinder to achieve screening of the particle size of the raw materials. The screen hole can be adjusted according to actual needs to meet the screening requirements of raw materials with different particle sizes. Raw materials that do not meet the screening requirements are output from the feeding end of the screening cylinder, while the screened raw materials are collected in the collection box, which is conducive to uniform transportation to the subsequent extrusion process, ensuring the uniformity and quality of particle size during extrusion.
[0037] (5) The tilt angle of the screening cylinder in the device is set to 15-30°, which is conducive to the uniform distribution of the cut raw materials in the screening cylinder and can reduce the blockage of the raw materials during the screening process, avoid excessive accumulation or jamming of the raw materials in the screening cylinder, and effectively improve the screening efficiency and quality of the raw materials. Attached Figure Description
[0038] Figure 1 This is a schematic diagram of the structure of this utility model;
[0039] Figure 2 This is a schematic diagram of the structure of the first cutting mechanism in this utility model;
[0040] Figure 3 This is a schematic diagram of the structure of the second cutting mechanism in this utility model;
[0041] Figure 4 This is a side view of the screening unit in this utility model;
[0042] The components include: 1. Control system; 2. Device body; 21. Housing; 22. Feed hopper; 23. First cutting chamber; 24. Second cutting chamber; 25. First cutting mechanism; 251. Second drive assembly; 2511. Second drive motor; 2512. First rotating shaft; 2513. First pulley; 2514. First V-belt; 2515. Second pulley; 2516. First gear; 2517. Second gear; 252. First cutting assembly; 2521. Cutting box; 25211. First side frame; 25212. Second side frame; 25213. Comb teeth; 25214. Comb holes; 25215. Screen plate; 2522. First crushing shaft; 2523. Second crushing shaft; 2524. First crushing blade; 26. 261. Second cutting mechanism; 262. Third crushing shaft; 263. Fixed base; 264. Second crushing blade; 265. Third pulley; 266. Second V-belt; 27. Screening unit; 271. First drive assembly; 2711. First drive motor; 2712. Second rotating shaft; 2713. First sprocket; 2714. Chain; 2715. Second sprocket; 272. Screening drum assembly; 2721. Screening drum; 2722. Frame; 2723. Collection box; 2724. Fixed base plate; 2725. Supporting rotating wheel; 2726. Third rotating shaft; 2727. Drum frame; 2728. Screen hole; 2729. Third discharge port; 27210. Third feed port; 27211. Sealing cover; 28. Base. Detailed Implementation
[0043] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All utility model creations utilizing the concept of this utility model are within the scope of protection.
[0044] like Figures 1-4 As shown, the bipolar plate multi-stage cutting and screening device provided by this utility model includes a control system 1 and a device body 2 connected to the control system 1. The device body 2 includes a base 28 and a cutting unit and a screening unit 27 disposed on the base 28. The screening unit 27 is connected to the cutting unit. Through integration with the control system 1, the cutting unit and the screening unit 27 can achieve automated collaborative operation, greatly reducing the intensity of manual labor and improving production efficiency and product quality. Among them, the cutting unit can perform multi-stage cutting of bipolar plate raw materials, improving the cutting uniformity of raw materials, while the screening unit 27 can perform particle size screening on the cut raw materials, retaining raw materials that meet production requirements, and ensuring the particle size uniformity and quality during extrusion.
[0045] As Figure 1 shown, the cutting unit includes a box body 21, which is sequentially provided with a feeding hopper 22, a first cutting cavity 23 and a second cutting cavity 24 from top to bottom, the first cutting cavity 23 is provided with a first feeding port at the top end and a first discharge port at the lower end, and a first cutting mechanism 25 is arranged in the first cutting cavity 23, and the first feeding port is connected with the discharge end of the feeding hopper 22; the second cutting cavity 24 is provided with a second feeding port at the top end and a second discharge port at the lower end, and a second cutting mechanism 26 is arranged in the second cutting cavity 24; the second feeding port is connected with the first discharge port; the raw material to be cut can be conveyed into the first cutting cavity 23 through the feeding hopper 22 and the first feeding port, and the first cutting mechanism 25 in the first cutting cavity 23 can perform primary cutting on the raw material, and the cut raw material enters the second cutting cavity 24 through the first discharge port and the second feeding port, and the second cutting mechanism 26 in the second cutting cavity 24 performs secondary cutting on the raw material, and the secondary cut raw material enters the screening unit 27 through the second discharge port; wherein the first cutting mechanism 25 can preliminarily crush the raw material in the first cutting cavity 23 to break it into smaller particles, and the second cutting mechanism 26 can further subdivide the preliminarily crushed raw material to make the particle size more uniform; through the synergistic effect of the first cutting mechanism 25 and the second cutting mechanism 26, the raw material can be rapidly and efficiently crushed, the crushing efficiency is significantly improved, and the uniformity of the particle size of the crushed raw material is ensured; in addition, a sieve plate 25215 is arranged between the first discharge port and the second feeding port; the sieve plate 25215 can preliminarily screen the raw material cut by the first cutting mechanism 25, ensure that the particle size of the raw material entering the second cutting cavity 24 is relatively uniform, facilitate the operation of the second cutting mechanism 26, effectively improve the overall cutting efficiency and screening efficiency, and ensure the quality of the bipolar plate production.
[0046] The screening unit 27 includes a first driving assembly 271 and a screening drum assembly 272 connected with the first driving assembly 271, and the screening drum assembly 272 is connected with the second discharge port; the screening unit 27 can screen the cut raw material by rotating to separate raw materials of different particle sizes, retain raw materials meeting the production requirements, facilitate to improve the stability of the subsequent extrusion process, and improve the manufacturing quality of the bipolar plate.
[0047] As Figure 1 and Figure 2As shown, the first cutting mechanism 25 comprises a second driving assembly 251 and a first cutting assembly 252 connected with the second driving assembly 251, the first cutting assembly 252 comprises a cutting box 2521 and a first crushing shaft 2522 and a second crushing shaft 2523 arranged inside the cutting box 2521, the surfaces of the first crushing shaft 2522 and the second crushing shaft 2523 are provided with a plurality of first crushing blades 2524; the cutting box 2521 comprises a first side frame 25211 and a second side frame 25212 arranged correspondingly, a plurality of comb teeth 25213 are arranged on the second side frame 25212, a plurality of comb holes 25214 are formed between the plurality of comb teeth 25213, and the comb holes 25214 are arranged correspondingly with the first crushing blades 2524; the cutting box 2521 is used for placing and fixing the first crushing shaft 2522 and the second crushing shaft 2523, so as to ensure that the cutting is carried out in a closed and safe environment; and under the control of the second driving assembly 251, the first crushing shaft 2522 and the second crushing shaft 2523 can rotate simultaneously, driving the first crushing blades 2524 to rotate, so that the rapid crushing of large raw materials can be realized, and the comb teeth 25213 and the comb holes 25214 can simultaneously play a role of screening and guiding, which can not only ensure that the crushed raw materials are smoothly discharged, but also can initially screen the particle size of the crushed raw materials, so as to ensure the uniformity of the particle size of the final product, and further realize the guarantee of the performance of the bipolar plate.
[0048] The second driving assembly 251 comprises a second driving motor 2511, a first rotating shaft 2512 is arranged on the output end of the second driving motor 2511, a first pulley 2513 is arranged on the first rotating shaft 2512, the first pulley 2513 is connected with a second pulley 2515 through a first V-belt 2514, the second pulley 2515 is arranged on the first crushing shaft 2522, a first gear 2516 is arranged on one end of the first crushing shaft 2522 close to the second pulley 2515, the first gear 2516 is engagedly connected with a second gear 2517, and the second gear 2517 is arranged on the second crushing shaft 2523; when the second driving motor 2511 is started under the control of the control system 1, the first rotating shaft 2512 can transmit the rotating power of the second driving motor 2511 to the first pulley 2513, the first pulley 2513 transmits the rotating power to the second pulley 2515 through the first V-belt 2514, driving the first crushing shaft 2522 to rotate, and the first crushing shaft 2522 transmits the rotating power to the second crushing shaft 2523 through gear engagement, so as to realize the synchronous rotation of the first crushing shaft 2522 and the second crushing shaft 2523, and further improve the crushing efficiency and the particle size uniformity of the bipolar plate raw materials.
[0049] As shown in the figure, Figure 1 and Figure 3As shown, the second cutting mechanism 26 includes a third crushing shaft 261, on which several fixed bases 262 are mounted, and on which several second crushing blades 263 are mounted. A third pulley 264 is mounted at one end of the third crushing shaft 261, and the third pulley 264 is connected to the first pulley 2513 via a second V-belt 265. When the second drive motor 2511 starts, the rotational power can be transmitted to the third crushing shaft 261 through the first pulley 2513, the first V-belt 2514, and the third pulley 264, causing the third crushing shaft 261 to rotate, which in turn drives the second crushing blades 263 mounted thereon to rotate, thereby performing secondary cutting on the raw material that has been initially crushed by the first cutting mechanism 25, so that the bipolar plate raw material has better particle size uniformity and ensures the production quality of the bipolar plate. In addition, the number and arrangement of the second crushing blades 263 can be selected and set according to production needs, further ensuring the crushing effect and particle size uniformity.
[0050] like Figure 1 and Figure 4 As shown, the screening drum assembly 272 includes a frame 2722 and a screening drum 2721 mounted on the frame 2722. The inclination angle between the inlet and outlet ends of the screening drum 2721 is 15-30°. The outlet end of the screening drum 2721 is provided with a third outlet 2729, and its inlet end is provided with a third inlet 27210. The third inlet 27210 is connected to the second outlet through a discharge pipe. A sealing cover 27211 is provided on the upper part of the frame 2722, and a collection box 2723 is provided on the side near the base 28. Fixed base plates 2724 are provided at both ends of the frame 2722. Supporting rotating wheels 2725 are provided at both ends of the fixed base plates 2724. There are four supporting rotating wheels 2725, and a third rotating shaft is provided in the middle of the wheel. 2726, a second sprocket 2715 is provided on the third rotating shaft 2726; a cylinder frame 2727 is provided at both ends of the screening cylinder 2721, and a sieve hole 2728 is provided on its surface. A transmission rail is provided on the cylinder frame 2727, and the transmission rail is rotatably connected to the supporting rotating wheel 2725; under the drive of the first driving component 271, the screening cylinder 2721 can be rotated to realize the screening of raw material particle size, and the sieve hole 2728 can be adjusted according to actual needs to meet the screening requirements of raw materials with different particle sizes. Raw materials that do not meet the screening requirements are output from the discharge end of the screening cylinder 2721, while the screened raw materials are collected in the collection box 2723, which is conducive to uniform transportation to the subsequent extrusion process, ensuring the uniformity of particle size and quality during extrusion.
[0051] The first drive assembly 271 includes a first drive motor 2711, with a second rotating shaft 2712 at the output end of the first drive motor 2711. A first sprocket 2713 is located at the end of the second rotating shaft 2712 away from the first drive motor 2711. The first sprocket 2713 is connected to a second sprocket 2715 via a chain 2714. When the first drive motor 2711 starts, the second rotating shaft 2712 transmits the power of the first drive motor 2711 to the first sprocket 2713. The first sprocket 2713 transmits the power to the second sprocket 2715 via the chain 2714. The second sprocket 2715 transmits the power to a third rotating shaft 2726. The third rotating shaft 2726 drives the supporting rotating wheel 2725 to rotate. The supporting rotating wheel 2725 drives the screening cylinder 2721 to rotate via a transmission track, thereby achieving particle size screening of the raw materials after secondary cutting and ensuring the uniformity of the particle size of the raw materials.
[0052] The working process of the device is as follows: First, the bipolar plate mixed raw material that needs to be cut and screened is fed into the feed hopper 22. The raw material enters the first cutting chamber 23 from the discharge end of the feed hopper 22 through the first feed port. Then, the second drive assembly 251 is started, driving the first crushing shaft 2522 and the second crushing shaft 2523 to rotate synchronously. The first crushing shaft 2522 and the second crushing shaft 2523 use the first crushing blades 2524 set on their surfaces to perform preliminary crushing of the raw material. The preliminary crushed raw material enters the second cutting chamber 24 through the first discharge port and the second feed port. The third crushing shaft 261... The second crushing blade 263 installed on it performs secondary cutting on the raw material that has been initially crushed by the first cutting mechanism 25, further cutting the raw material particle size. The raw material cut by the second cutting mechanism 26 enters the screening cylinder 2721 of the screening unit 27 through the second discharge port and the third feed port 27210. The screening cylinder 2721 rotates under the drive of the first drive component 271 to achieve screening of the raw material particle size. The screened raw material is collected in the collection box 2723, while the raw material that does not meet the screening requirements is output from the third discharge port 2729 of the screening cylinder 2721.
[0053] In summary, the bipolar plate multi-stage cutting and screening device of this utility model can realize the automated processing of raw material cutting and screening through the control system 1, reducing the intensity of manual labor. Moreover, through multi-stage cutting and screening, it effectively ensures the uniformity of raw material particle size, providing a quality guarantee for subsequent extrusion molding.
Claims
1. A bipolar plate multi-stage cutting and screening device, characterized in that: The device includes a control system (1) and a device body (2) connected to the control system (1). The device body (2) includes a base (28) and a cutting unit and a screening unit (27) disposed on the base (28). The screening unit (27) is connected to the cutting unit. The cutting unit includes a housing (21), which is provided with a feeding hopper (22), a first cutting chamber (23) and a second cutting chamber (24) from top to bottom. The first cutting chamber (23) has a first feeding port at the top and a first discharging port at the bottom. It is equipped with a first cutting mechanism (25) inside. The first feeding port is connected to the discharging end of the feeding hopper (22). The second cutting chamber (24) has a second feeding port at the top and a second discharging port at the bottom. It is equipped with a second cutting mechanism (26) inside. The second feeding port is connected to the first discharging port. The screening unit (27) includes a first driving component (271) and a screening drum component (272) connected to the first driving component (271). The feed end of the screening drum component (272) is connected to the second discharge port.
2. The bipolar plate multi-stage cutting and screening device according to claim 1, characterized in that: The first cutting mechanism (25) includes a second drive assembly (251) and a first cutting assembly (252) connected to the second drive assembly (251). The first cutting assembly (252) includes a cutting box (2521) and a first crushing shaft (2522) and a second crushing shaft (2523) disposed inside the cutting box (2521). The surfaces of the first crushing shaft (2522) and the second crushing shaft (2523) are each provided with a plurality of first crushing blades (2524). The cutting box (2521) includes a first side frame (25211) and a second side frame (25212) respectively. The second side frame (25212) is provided with a plurality of comb teeth (25213), and comb holes (25214) are formed between the plurality of comb teeth (25213). The comb holes (25214) are correspondingly provided with the first crushing blade (2524).
3. The bipolar plate multi-stage cutting and screening device according to claim 2, characterized in that: The second drive assembly (251) includes a second drive motor (2511), the output end of which is provided with a first rotating shaft (2512), a first pulley (2513) is provided on the first rotating shaft (2512), the first pulley (2513) is connected to a second pulley (2515) through a first V-belt (2514), the second pulley (2515) is provided on a first crushing shaft (2522), a first gear (2516) is provided at the end of the first crushing shaft (2522) near the second pulley (2515), the first gear (2516) is meshed with a second gear (2517), and the second gear (2517) is provided on a second crushing shaft (2523).
4. The bipolar plate multi-stage cutting and screening device according to claim 1, characterized in that: The second cutting mechanism (26) includes a third crushing shaft (261), on which a plurality of fixed bases (262) are provided, and on which a plurality of second crushing blades (263) are provided; a third pulley (264) is provided at one end of the third crushing shaft (261), and the third pulley (264) is connected to the first pulley (2513) through a second V-belt (265).
5. The bipolar plate multi-stage cutting and screening device according to claim 1, characterized in that: The screening drum assembly (272) includes a frame (2722) and a screening drum (2721) disposed on the frame (2722); a collection box (2723) is disposed on the side of the frame (2722) near the base (28); a fixed base plate (2724) is disposed at both ends of the frame (2722); a supporting rotating wheel (2725) is disposed at both ends of the fixed base plate (2724); a third rotating shaft (2726) is disposed in the middle of the supporting rotating wheel (2725); and a second sprocket (2715) is disposed on the third rotating shaft (2726). The screening cylinder (2721) is provided with a cylinder frame (2727) at both ends, and a screen hole (2728) is provided on its surface. A transmission rail is provided on the cylinder frame (2727), and the transmission rail is rotatably connected to the support rotating wheel (2725).
6. The bipolar plate multi-stage cutting and screening device according to claim 1, characterized in that: The first drive assembly (271) includes a first drive motor (2711), and a second rotating shaft (2712) is provided at the output end of the first drive motor (2711). A first sprocket (2713) is provided at the end of the second rotating shaft (2712) away from the first drive motor (2711). The first sprocket (2713) is connected to the second sprocket (2715) through a chain (2714).
7. The bipolar plate multi-stage cutting and screening device according to claim 5, characterized in that: The screening cylinder (2721) is provided with a third discharge port (2729) at the discharge end and a third feed port (27210) at the feed end. The third feed port (27210) is connected to the second discharge port through a feeding pipe.
8. The bipolar plate multi-stage cutting and screening device according to claim 7, characterized in that: The inclination angle between the feed end and the discharge end of the screening cylinder (2721) is 15-30°.
9. The bipolar plate multi-stage cutting and screening device according to claim 5, characterized in that: A sealing cover (27211) is provided on the upper part of the frame (2722).
10. The bipolar plate multi-stage cutting and screening device according to claim 1, characterized in that: A sieve plate (25215) is provided between the first discharge port and the second inlet.