Mixing device for dry-method electrode
By using a variety of stirring blades and vibration support components in the dry electrode mixing device, the problem of uneven mixing caused by powder agglomeration is solved, achieving an efficient and safe mixing process and avoiding material oxidation and dust pollution.
Patent Information
- Application Number
- CN202520233593.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-02-14
AI Technical Summary
Dry electrode powder is prone to agglomeration, resulting in uneven mixing. Furthermore, conventional mixing equipment can easily lead to moisture absorption, oxidation, and dust contamination of the material, posing safety hazards.
It employs various stirring blades (dispersing blades, folding blades, and crushing blades) in conjunction with vibration support components and vacuum components to disperse and crush powder materials, preventing accumulation, and prevents dust spillage through vacuum negative pressure feeding.
It improves mixing uniformity and efficiency, prevents material oxidation and dust pollution, and ensures production safety and environmental hygiene.
Smart Images
Figure CN223901611U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of electrode mixing devices, in particular to a mixing device for dry-process electrodes. BACKGROUND
[0002] The dry-process electrode powder mixing process is a mixing process, a VC mixing device is used, and under the joint action of a high-speed rotating stirring paddle and a conical inner bin, the cutting speed is increased, the material is taken from the bottom of the mixing device to the upper part of the mixing cavity, and then falls back to the center of the mixing bin, so that rapid macroscopic mixing is formed, the mixing efficiency is improved, the particles can be fully mixed and dispersed, and the micron-level mixing uniformity effect is achieved.
[0003] However, the dry-process electrode powders are prone to agglomeration, and the agglomerated material is accumulated at the bottom of the mixing device under the action of gravity, so that the stirring paddle of the mixing device cannot take the material to the upper part of the mixing cavity for mixing, thereby affecting the uniformity of the material mixing. Meanwhile, the conventional VC mixing device is open to material feeding, on the one hand, the material is easy to contact the external air during feeding, which causes the material to be damp and oxidized, thereby affecting the product quality, on the other hand, a large amount of dust is generated during the feeding process, which not only pollutes the production environment and harms the health of the operators, but also may cause safety accidents such as dust explosion. CONTENT OF THE UTILITY MODEL
[0004] The application aims to provide a mixing device for dry-process electrodes, which aims to improve the uneven mixing problem of the mixing device in the related art, and improve the mixing efficiency and mixing quality of the mixing device.
[0005] The application provides a mixing device for dry-process electrodes, which comprises a rack, a mixing tank assembly arranged on the rack, a stirring assembly arranged on the mixing tank assembly, and a vibration support assembly; the mixing tank assembly comprises a mixing tank body and a sealing cover arranged on the mixing tank body, and the mixing tank body is provided with a feeding port and a discharging port; the stirring assembly comprises a stirring rod rotatably connected to the mixing tank body and a stirring driving member for driving the stirring rod, and the stirring rod is provided with a plurality of stirring paddles along the length direction of the stirring rod; the plurality of stirring paddles comprise at least three kinds of paddles, i.e., a dispersing paddle, a folding paddle and a crushing paddle; and the vibration support assembly is arranged on the outside of the mixing tank body and attached to the mixing tank body.
[0006] Further, the dispersing paddle comprises a plurality of dispersing leaves, the plurality of dispersing leaves are perpendicularly connected to the stirring rod, and the plurality of dispersing leaves are uniformly distributed along the circumferential direction of the stirring rod.
[0007] Further, the folding paddle comprises a plurality of first folding blades and a plurality of second folding blades, the plurality of first folding blades and the plurality of second folding blades are distributed along the length direction of the stirring rod; the length of the first folding blade gradually decreases from the feeding port to the discharging port.
[0008] Further, the first folding blade has a first blade end arranged obliquely, and the second folding blade has a second blade end arranged obliquely; the first blade end and the second blade end are attached to the inner wall of the mixing tank body.
[0009] Further, the crushing paddle has a plurality of crushing blades, the plurality of crushing blades are distributed along the circumferential direction of the stirring rod, and adjacent crushing blades are arranged in a staggered manner.
[0010] Further, the mixing tank assembly further comprises a condenser pipe and a heating plate, the condenser pipe and the heating plate are arranged between the outer wall and the inner wall of the mixing tank body.
[0011] Further, the vibration support assembly comprises a lifting rod arranged on the rack, the lifting rod is provided with a support plate attached to the mixing tank body, the support plate is provided with a vibration driving member attached to the outside of the mixing tank body.
[0012] Further, a vacuum assembly is further included, the vacuum assembly comprises a vacuum pump and a vacuum pipe connected to the vacuum pump, the vacuum pipe communicates with the mixing tank body, and the vacuum pipe is provided with a vacuum valve.
[0013] The beneficial effects of the present application are as follows:
[0014] 1. The mixing device for dry-process electrode, by arranging at least three kinds of stirring paddles on the stirring rod, the three kinds of stirring paddles perform different functions respectively, when the electrode material is put in, the dispersion paddle can quickly disperse the just put-in electrode material, avoiding the material falling and accumulating in the same position, the folding paddle generates mixing flow during rotation to promote the material to exchange fully in different heights and horizontal positions, and the crushing paddle crushes the agglomerated particles in the electrode material; at the same time, cooperating with the vibration support assembly to vibrate the mixing tank body can reduce the electrode material adhered to the inner wall of the mixing tank body, avoid the accumulation of material aggregation, ensure the full contact and mixing of the electrode material, thereby effectively improving the uniformity and mixing efficiency of the material mixing, and improving the problem of uneven mixing of the mixing device in the related art.
[0015] 2. The mixing device of the present application can make the material flow more smoothly when discharging by setting the vibration driving part to apply vibration of specific frequency and amplitude to the mixing tank, and can prevent dust pollution by setting the vacuum component and using vacuum negative pressure feeding instead of manual feeding, and can completely seal the material conveying process, effectively prevent the material from contacting with the outside air during feeding and stirring, prevent dust overflow, improve the production environment, and protect the health of the operators and the production safety. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is a structural schematic diagram of a mixing device for dry-process electrode provided by an embodiment of the present application;
[0017] Figure 2 is another structural schematic diagram of a mixing device for dry-process electrode provided by an embodiment of the present application;
[0018] Figure 3 is a sectional structural schematic diagram of a stirring component in an embodiment of the present application;
[0019] Figure 4 is a structural schematic diagram of a stirring paddle and a stirring rod in an embodiment of the present application;
[0020] Figure 5 is Figure 2 is a local enlarged schematic diagram of part A.
[0021] BRIEF DESCRIPTION OF DRAWINGS
[0022] 1. rack; 2. mixing tank component; 21. mixing tank body; 211. feeding port; 212. discharging port; 22. sealing cover; 23. condenser tube; 24. heating plate; 3. stirring component; 31. stirring rod; 32. stirring driving part; 33. stirring paddle; 331. dispersion paddle; 3311. dispersion blade; 332. folding paddle; 3321. first folding blade; 33211. first blade end; 3322. second folding blade; 33221. second blade end; 333. crushing paddle; 3331. crushing blade; 4. vibration support component; 41. lifting rod; 42. support plate; 43. vibration driving part; 5. vacuum component; 51. vacuum pump; 52. vacuum tube; 53. vacuum valve; 6. control component. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solutions and advantages of the present application more clear and explicit, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.
[0024] It should be noted that although the functional modules are divided in the device schematic diagram, the logical order is shown in the flowchart, but in some cases, the steps shown or described can be performed in a manner different from the module division in the device, or the order in the flowchart. The terms "first", "second", etc. in the specification and claims and the above drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.
[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the specification herein is for describing the embodiments of the present application only and is not intended to limit the present application.
[0026] Referring to Figure 1 and Figure 2 The embodiments of the present application provide a mixing device for dry electrode, comprising a rack 1, further comprising a mixing tank assembly 2 arranged on the rack 1, a stirring assembly 3 arranged on the mixing tank assembly 2, and a vibration support assembly 4. When the mixing device for dry electrode is running, the electrode material is put into the mixing tank assembly 2, at the same time, the stirring assembly 3 and the vibration support assembly 4 work, the stirring assembly 3 stirs the electrode material, and the vibration support assembly 4 reduces the electrode material adhered in the mixing tank assembly 2 by vibrating the mixing tank assembly 2, thereby improving the mixing efficiency.
[0027] Specifically, the rack 1 is used to support and adapt to install various assemblies, in the embodiment, the rack 1 is arranged in a "C" shape, and a through hole is formed in the bottom of the rack 1 to cooperate with the discharge of the mixing tank assembly 2. The mixing tank assembly 2 comprises a mixing tank body 21 and a sealing cover 22 arranged on the mixing tank body 21, and the sealing cover 22 is fixedly connected to the upper part of the rack 1 to seal the mixing tank body 21. The mixing tank body 21 has a feeding port 211 and a discharge port 212, the feeding port 211 is located at the upper part of the mixing tank body 21, in the embodiment, the feeding port 211 is located in the sealing cover 22 and communicates with the inside of the mixing tank body 21, and the discharge port 212 is located at the lower part of the mixing tank body 21, the electrode material is put into from the upper discharge port 212 and discharged from the lower discharge port 212 after being stirred by the stirring assembly 3.
[0028] Referring to Figure 3 and Figure 4The stirring assembly 3 comprises a stirring rod 31 rotatably connected to the mixing tank body 21 and a stirring drive 32 for driving the stirring rod 31, the stirring rod 31 is located inside the mixing tank body 21 behind the sealing cover 22, and the stirring drive 32 is an electric motor, which is arranged above the rack 1 and coaxially connected with the stirring rod 31. In order to ensure the stirring quality and efficiency, the stirring rod 31 is provided with a plurality of stirring blades 33 along the length direction thereof, and the plurality of stirring blades 33 include at least three kinds of blades, i.e., dispersion blades 331, folding blades 332 and crushing blades 333. In the embodiment, the stirring blades 33 include the dispersion blades 331, the folding blades 332 and the crushing blades 333, which are sequentially arranged above, in the middle and below the stirring rod 31.
[0029] The dispersion blades 331 are used for rapidly dispersing the input electrode material to avoid material accumulation, and the dispersion blades 331 include a plurality of dispersion leaves 3311, which are perpendicularly connected to the stirring rod 31 and uniformly distributed along the circumferential direction of the stirring rod 31. In the embodiment, the dispersion leaves 3311 are four in number, and it can be understood that the number and position of the dispersion leaves 3311 can be adjusted as needed in actual application.
[0030] The folding blades 332 are used for generating high-strength axial and radial mixing flow to promote the full exchange of materials at different heights and horizontal positions. The folding blades 332 include a plurality of first folding leaves 3321 and a plurality of second folding leaves 3322, which are spaced apart along the length direction of the stirring rod 31 and have an included angle therebetween to ensure mixing efficiency, and the length of the first folding leaves 3321 gradually decreases from the feeding port 211 to the discharging port 212. In addition, the first folding leaves 3321 have first leaf ends 33211 arranged obliquely, and the second folding leaves 3322 have second leaf ends 33221 arranged obliquely, the first leaf ends 33211 and the second leaf ends 33221 are attached to the inner wall of the mixing tank body 21, and the oblique angles of the first leaf ends 33211 and the second leaf ends 33221 are the same or different to ensure the strength of the mixing flow. It should be noted that the number, position and oblique angle of each leaf end of the first folding leaves 3321 and the second folding leaves 3322 can be adjusted as needed.
[0031] The crushing blades 333 are used for further crushing the agglomerated particles in the electrode material to ensure sufficient contact and mixing of the electrode material. The crushing blades 333 have a plurality of crushing leaves 3331, which are distributed along the circumferential direction of the stirring rod 31 and arranged in a staggered manner, and the plurality of crushing leaves 3331 form a sawtooth for crushing the electrode material.
[0032] By setting the stirring assembly 3 in this way, the electrode material will pass through the dispersion paddle 331, the folding paddle 332 and the crushing paddle 333 in turn after being put in. When the dispersion paddle 331 rotates, it will drive the surrounding fluid to produce circumferential and axial motion. During the fluid flow, due to the difference between the speed of the edge of the dispersion paddle 331 and the speed near the center of the paddle, shear force will be generated inside the fluid. The fluid speed near the edge of the dispersion paddle 331 is fast, and the fluid speed near the center is slow. This speed gradient can generate shear force, which can overcome the agglomeration force between particles, thereby dispersing the electrode material such as powder, especially suitable for promoting the fiberization of polytetrafluoroethylene binder. The folding paddle 332 can produce strong axial and radial mixing flow when rotating, promoting the full exchange of materials at different heights and horizontal positions. The serrations of the crushing paddle 333 can further crush the agglomerated particles in the material when rotating, ensuring that the electrode material is fully contacted and mixed, effectively improving the uniformity and mixing efficiency of the material mixing.
[0033] Looking back Figure 1 And Figure 2 The vibration support assembly 4 is arranged outside the mixing tank body 21 and attached to the mixing tank body 21. The vibration support assembly 4 includes a lifting rod 41 arranged on the rack 1, which is a hydraulic rod. The lifting rod 41 is provided with a support plate 42 attached to the mixing tank body 21. The support plate 42 is connected to the outside of the mixing tank body 21. When the lifting rod 41 is activated to lift, the support plate 42 will drive the mixing tank body 21 to move up and down to cooperate with the sealing cover 22 to be closed. The support plate 42 is provided with a vibration driving member 43 attached to the outside of the mixing tank body 21. The vibration driving member 43 is a vibration motor, which can apply a vibration of a specific frequency and amplitude to the mixing tank body 21, which can effectively prevent the material from adhering to the inner wall of the mixing tank body 21, and can make the electrode material flow more smoothly when discharging after stirring is completed.
[0034] Referring to Figure 3 In order to facilitate the control of the temperature of the mixing tank assembly 2 to cooperate with the process requirements, the mixing tank assembly 2 further comprises a condenser pipe 23 and a heating plate 24, which are arranged in the interlayer between the outer wall and the inner wall of the mixing tank body 21. The heating plate 24 can heat the inside of the mixing tank body 21, thereby increasing the temperature inside the mixing tank body 21. The condenser pipe 23 is installed in the interlayer of the mixing tank body 21, and the circulating condensate water is injected into the condenser pipe 23 to reduce the temperature inside the mixing tank body 21, so that the mixing device can quickly adjust the internal temperature during use.
[0035] Referring to Figure 5In order to ensure the feeding efficiency and the production environment, the mixing device further comprises a vacuum assembly 5, which comprises a vacuum pump 51 and a vacuum pipe 52 connected to the vacuum pump 51, the vacuum pump 51 is arranged on the sealing cover 22, the vacuum pipe 52 is communicated with the mixing tank 21, and the vacuum pipe 52 is provided with a vacuum valve 53. The vacuum pump 51 draws out the air in the mixing tank 21 through the vacuum pipe 52, so that the air pressure in the mixing tank 21 gradually decreases to form a vacuum environment. The material is sucked into the mixing tank 21 under the action of the air pressure difference between the external atmospheric pressure and the air pressure formed by the vacuum in the mixing tank 21, and the negative pressure value can be accurately controlled by rotating the vacuum valve 53 to adapt to the conveying requirements of different materials. The vacuum negative pressure feeding can replace manual feeding to prevent dust pollution, and the material conveying process is completely sealed, which effectively avoids the contact between the material and the external air during feeding and stirring, eliminates dust overflow, improves the production environment, and ensures the health of the operators and the production safety.
[0036] The rack 1 is provided with a control assembly 6 for connecting various assemblies, and the running conditions of various assemblies and the conditions in the mixing tank 21 can be conveniently monitored and controlled through the control assembly 6.
[0037] The working principle of the mixing device for dry-process electrodes is that the feeding port 211 is connected to a container containing dry-process electrode raw materials through a pipeline, and then the vacuum pump 51 is started through the control assembly 6. The vacuum pump 51 draws out the air in the mixing tank 21 through the vacuum pipe 52, so that the air pressure in the mixing tank 21 gradually decreases to form a vacuum environment. The material is sucked into the mixing tank 21 under the action of the air pressure difference between the external atmospheric pressure and the air pressure formed by the vacuum in the mixing tank 21. Then, the control assembly 6 starts the stirring assembly 3. The dispersion paddle 331 can quickly disperse the electrode materials initially fed, so as to avoid material accumulation; the folding paddle 332 can generate high-strength axial and radial mixing flow during rotation, so as to promote the full exchange of materials at different heights and horizontal positions; and the crushing paddle 333 further crushes the agglomerated particles in the material, so as to ensure that the electrode materials are fully contacted and mixed.
[0038] The above specifically shows and describes the exemplary embodiments of the present disclosure. It should be understood that the present disclosure is not limited to the detailed structure, arrangement or implementation method described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent arrangements within the spirit and scope of the appended claims.
Claims
1. A mixing apparatus for dry electrode fabrication, comprising a frame (1), characterized in that, It also includes a mixing tank assembly (2) disposed on the frame (1), a stirring assembly (3) disposed on the mixing tank assembly (2), and a vibration support assembly (4); the mixing tank assembly (2) includes a mixing tank body (21) and a sealing cover (22) disposed on the mixing tank body (21), the mixing tank body (21) having a feed inlet (211) and a discharge outlet (212); the stirring assembly (3) includes a stirring rod (31) rotatably connected to the mixing tank body (21) and a stirring drive component (32) for driving the stirring rod (31), the stirring rod (31) having a plurality of stirring blades (33) disposed along its length, the plurality of stirring blades (33) including at least three types of blades such as dispersing blades (331), folding blades (332) and crushing blades (333); the vibration support assembly (4) is disposed on the outside of the mixing tank body (21) and attached to the mixing tank body (21).
2. The mixing device for dry electrode according to claim 1, characterized in that, The dispersing blade (331) includes a plurality of dispersing blades (3311), which are vertically connected to the stirring rod (31) and are evenly distributed along the circumferential direction of the stirring rod (31).
3. The mixing device for dry electrode according to claim 1, characterized in that, The folding blade (332) includes a plurality of first folding blades (3321) and a plurality of second folding blades (3322), the plurality of first folding blades (3321) and the plurality of second folding blades (3322) being spaced apart along the length direction of the stirring rod (31); the length of the first folding blades (3321) gradually decreases from the feed inlet (211) to the discharge outlet (212).
4. A mixing device for dry electrode according to claim 3, characterized in that, The first folding blade (3321) has an inclined first blade end (33211), and the second folding blade (3322) has an inclined second blade end (33221); the first blade end (33211) and the second blade end (33221) are attached to the inner wall of the mixing tank (21).
5. A mixing device for dry electrode according to claim 1, characterized in that, The crushing blade (333) has a plurality of crushing blades (3331), which are distributed along the circumferential direction of the stirring rod (31) and adjacent crushing blades (3331) are staggered.
6. A mixing device for dry electrodes according to any one of claims 1-5, characterized in that, The mixing tank assembly (2) also includes a condenser pipe (23) and a heating plate (24), which are disposed between the outer wall and the inner wall of the mixing tank body (21).
7. A mixing device for dry electrode according to claim 1, characterized in that, The vibration support assembly (4) includes a lifting rod (41) disposed on the frame (1), the lifting rod (41) is provided with a support plate (42) attached to and connected to the mixing tank (21), the support plate (42) is provided with a vibration drive (43), and the vibration drive (43) is attached to the outside of the mixing tank (21).
8. A mixing device for dry electrode according to claim 1, characterized in that, It also includes a vacuum assembly (5), which includes a vacuum pump (51) and a vacuum tube (52) connected to the vacuum pump (51). The vacuum tube (52) is connected to the mixing tank (21) and is equipped with a vacuum valve (53).