Battery slurry sieving device

Abstract

The application discloses a slurry sieving device for batteries, which comprises a stirring mechanism, a screening mechanism and a storage pool. The stirring mechanism is used for stirring the slurry, the screening mechanism is arranged below the stirring mechanism, and the storage pool is arranged below the screening mechanism. The screening mechanism comprises a screening box, a first-stage sieve plate, a first-stage ultrasonic assembly and a vibration assembly. The screening box is connected with a discharge port of the stirring mechanism. One end of the first-stage sieve plate is hinged to an inner wall of the screening box. The first-stage ultrasonic assembly is arranged at the bottom side of the first-stage sieve plate and is used for ultrasonic oscillation of the slurry adhered to the first-stage sieve plate. The vibration assembly is arranged below the first-stage sieve plate and a vibration end of the vibration assembly is connected with the first-stage sieve plate and is used for driving the first-stage sieve plate to vibrate. Through cooperation of the first-stage sieve plate, the first-stage ultrasonic assembly and the vibration assembly in the screening mechanism, the slurry can be filtered, and the first-stage sieve plate can be prevented from being blocked by the slurry as much as possible, so that the efficiency and effect of slurry filtration are affected.

Description

Technical Field

[0001] This application relates to the field of battery slurry production technology, specifically to a battery slurry screening device. Background Technology

[0002] In the field of lithium-ion battery electrode manufacturing, efficient slurry filtration is a core step in ensuring product consistency. Especially when dealing with disodium hydrogen phosphate battery precursor slurry (which is prone to crystal agglomeration) and glyphosate byproducts (containing microcrystalline-organic complex viscous systems), traditional sieving devices using filter screens have rigid technical bottlenecks: the filter screens are easily clogged by hydrogen bond aggregates between disodium hydrogen phosphate crystals and glyphosate degradation colloids, requiring frequent shutdowns for manual cleaning, affecting the continuous operation time of the equipment, and leading to reduced work efficiency. Utility Model Content

[0003] This application provides a battery slurry screening device to improve the problem that the filter screen in traditional filtration devices is easily clogged by slurry.

[0004] In a first aspect, embodiments of this application provide a battery slurry screening device, comprising:

[0005] A mixing mechanism is used to mix slurry.

[0006] A screening mechanism is located below the mixing mechanism and is used to receive the slurry from the mixing mechanism;

[0007] A storage tank, located below the screening mechanism, is used to receive the slurry after screening by the screening mechanism;

[0008] The screening mechanism includes a screening box, a primary sieve plate, a primary ultrasonic component, and a vibration component. The screening box is connected to the discharge port of the stirring mechanism. One end of the primary sieve plate is hinged to the inner wall of the screening box. The primary ultrasonic component is located on the bottom side of the primary sieve plate and performs ultrasonic oscillation on the slurry adhering to the primary sieve plate. The vibration component is located below the primary sieve plate and its vibrating end is connected to the primary sieve plate to drive the primary sieve plate to vibrate.

[0009] In some embodiments of this application, the stirring mechanism includes a stirring box, a motor, a drive gear, a first-stage driven gear, a first stirring roller, and a second stirring roller. The motor is located on one side of the stirring box, the drive gear is sleeved on the output end of the motor, the first stirring roller is connected to the output end of the motor, the first-stage driven gear meshes with the drive gear, and the second stirring roller is drivenly connected to the first-stage driven gear.

[0010] In some embodiments of this application, the plurality of stirring blades of the first stirring roller and the plurality of stirring blades of the second stirring roller are offset along the axial direction of the drive gear.

[0011] In some embodiments of this application, the vibration assembly includes a secondary driven gear, a drive shaft, and a cam. The drive shaft is connected to the secondary driven gear and extends into the mixing tank. The secondary driven gear meshes with the driving gear. The cam is sleeved on the end of the drive shaft away from the secondary driven gear, and the cam is connected to the end of the primary sieve plate away from the secondary driven gear.

[0012] In some embodiments of this application, the primary ultrasonic component includes a plurality of primary ultrasonic vibrators, which are disposed at the bottom of the primary sieve plate and arranged in an array.

[0013] In some embodiments of this application, the screening mechanism further includes a primary pushing component and a waste residue box. The primary pushing component is disposed on the inner wall of the screening box and the pushing end of the primary pushing component is disposed on the primary screen plate. The waste residue box is disposed in the screening box and located at the end of the primary screen plate away from the hinge end, and is used to receive waste residue from the primary screen plate.

[0014] In some embodiments of this application, the screening mechanism further includes a secondary sieve plate and a secondary ultrasonic component. The secondary sieve plate is disposed below the primary sieve plate, and the secondary ultrasonic component includes a plurality of secondary ultrasonic vibrators, with the plurality of secondary ultrasonic vibrators arranged in an array at the bottom of the secondary sieve plate.

[0015] In some embodiments of this application, the sieve aperture of the secondary sieve plate is smaller than that of the primary sieve plate.

[0016] In some embodiments of this application, the screening mechanism further includes a secondary pushing component, which is disposed on the inner wall of the screening box and the pushing end of the secondary pushing component is disposed on the secondary screen plate. The waste residue box has a secondary waste residue opening on the side facing the secondary pushing component and a baffle is hinged at the secondary waste residue opening. The baffle can open the secondary waste residue opening under the action of the pushing end of the secondary pushing component.

[0017] In some embodiments of this application, the bottom of the mixing tank is provided with a discharge port and a solenoid valve is provided at the discharge port. The discharge port is connected to the screening tank and the solenoid valve is used to open and close the discharge port.

[0018] Therefore, the embodiments of this application utilize a primary sieve plate, a primary ultrasonic component, and a vibration component in the screening mechanism to achieve slurry filtration while minimizing slurry blockage of the primary sieve plate, thus ensuring the filtration efficiency and effectiveness. Specifically, the slurry is first stirred by a stirring mechanism to break down large solid particles, completing preliminary screening. Then, the primary sieve plate is used to filter the slurry. During filtration, the vibration component drives the primary sieve plate to vibrate, improving filtration efficiency and reducing slurry adhesion. Simultaneously, the primary ultrasonic component further vibrates and pulverizes the slurry on the primary sieve plate, further dispersing agglomerates and colloids, reducing adhesion, and further improving filtration efficiency while minimizing the possibility of primary sieve blockage. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a battery slurry screening device provided in an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the internal structure of a battery slurry screening device provided in an embodiment of this application;

[0022] Figure 3 This is a top view of the primary sieve plate in a battery slurry screening device provided in an embodiment of this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Mixing mechanism; 11. Mixing box; 111. Discharge port; 12. Motor; 13. Drive gear; 14. First-stage driven gear; 15. First mixing roller; 16. Second mixing roller; 2. Screening mechanism; 21. Screening box; 22. First-stage sieve plate; 23. First-stage ultrasonic component; 231. First-stage ultrasonic vibrator; 24. Vibration component; 241. Second-stage driven gear; 242. Drive shaft; 243. Cam; 25. First-stage pushing component; 26. Waste bin; 261. First-stage waste outlet; 262. Second-stage waste outlet; 263. Baffle; 27. Second-stage pushing component; 28. Second-stage sieve plate; 29. ​​Second-stage ultrasonic component; 3. Storage tank; 4. Anti-fall cloth. Detailed Implementation

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

[0026] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or specifying the number of technical features indicated. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0027] Please see Figures 1 to 3 This application provides a battery slurry sieving device, including a stirring mechanism 1, a screening mechanism 2, and a storage tank 3. The stirring mechanism 1 is used to stir the slurry. The screening mechanism 2 is located below the stirring mechanism 1 and is used to receive the slurry from the stirring mechanism 1. The storage tank 3 is located below the screening mechanism 2 and is used to receive the slurry after screening by the screening mechanism 2. The screening mechanism 2 includes a screening box 21, a primary sieve plate 22, a primary ultrasonic component 23, and a vibration component 24. The screening box 21 is connected to the discharge port 111 of the stirring mechanism 1. One end of the primary sieve plate 22 is hinged to the inner wall of the screening box 21. The primary ultrasonic component 23 is located on the bottom side of the primary sieve plate 22 and performs ultrasonic oscillation on the slurry adhering to the primary sieve plate 22. The vibration component 24 is located below the primary sieve plate 22, and the vibrating end of the vibration component 24 is connected to the primary sieve plate 22 to drive the primary sieve plate 22 to vibrate.

[0028] The technical solution provided in this application utilizes the primary sieve plate 22, the primary ultrasonic component 23, and the vibration component 24 in the screening mechanism 2 to achieve slurry filtration while minimizing slurry blockage of the primary sieve plate 22, thus ensuring the filtration efficiency and effectiveness. Specifically, the stirring mechanism 1 first mixes the slurry and breaks down large solid particles, completing the initial screening. Then, the primary sieve plate 22 is used to filter the slurry. During filtration, the vibration component 24 drives the primary sieve plate 22 to vibrate, improving its filtration efficiency and reducing the amount of slurry adhering to it. Simultaneously, the primary ultrasonic component 23 further vibrates and crushes the slurry on the primary sieve plate 22, further dispersing agglomerates and colloids, reducing adhesion between the slurry and the screen, further improving filtration efficiency and minimizing the possibility of clogging.

[0029] For example, the initial slurry is disodium hydrogen phosphate slurry or glyphosate by-product slurry. The stirring mechanism 1 pre-disperses the slurry, shearing and breaking down the disodium hydrogen phosphate crystal agglomerates in the initial slurry or the colloidal-microcrystalline complexes in the glyphosate by-product slurry to form a homogeneous suspension. After falling into the screening box 21 through the outlet of the stirring mechanism 1, the slurry first spreads on the surface of the inclined primary sieve plate 22. At this time, the primary ultrasonic component 23 located on the bottom side of the sieve plate is activated, and the high-frequency mechanical waves generated by it penetrate the sieve mesh, inducing cavitation effect and acoustic radiation force in the slurry layer. The cavitation effect causes the collapse of micron-sized bubbles to generate local high pressure, directly shattering the hydrogen bond network between the disodium hydrogen phosphate crystals; the acoustic radiation force forms a pressure gradient perpendicular to the sieve mesh surface, stripping glyphosate degradation colloids, such as aminomethylphosphonic acid viscous substances, from the sieve holes. Simultaneously, the vibration component 24 drives the screen plate to vibrate up and down at a preset frequency and amplitude. The slurry forms a wave motion on the screen surface, accelerating the passage of fine particles, such as disodium hydrogen phosphate microcrystals. If the slurry is being processed as a by-product of glyphosate, ultrasonic cavitation can reduce the viscosity of the colloidal material. At the same time, the vibration further reduces the adhesion of the screen surface. The combination of these two factors increases the filtration throughput compared to traditional filter plates. Finally, the slurry that has passed through the screen falls into the storage tank 3.

[0030] In some embodiments, see Figure 2 The stirring mechanism 1 includes a stirring box 11, a motor 12, a drive gear 13, a first-stage driven gear 14, a first stirring roller 15, and a second stirring roller 16. The motor 12 is located on one side of the stirring box 11. The drive gear 13 is sleeved on the output end of the motor 12. The first stirring roller 15 is connected to the output end of the motor 12. The first-stage driven gear 14 meshes with the drive gear 13. The second stirring roller 16 is connected to the first-stage driven gear 14 in a transmission connection.

[0031] For example, the motor 12 is a servo motor 12, fixed to the side wall of the mixing tank 11, and its output shaft is coaxially connected to the drive gear 13; the first stirring roller 15 is directly fixed to the output shaft of the motor 12, forming the main drive end; the first-stage driven gear 14 meshes with the drive gear 13 and drives the second stirring roller 16 to rotate in the opposite direction through the spline shaft. The clockwise rotation of the first stirring roller 15 generates a shear flow, which instantly breaks up the sodium hydrogen phosphate crystal agglomerates, such as decomposing agglomerates with a diameter greater than 500 μm into agglomerates less than 50 μm; the counterclockwise rotation of the second stirring roller 16 forms a reverse vortex, which forces the colloidal-microcrystalline composite to collide and disperse in the middle of the tank, solving the problem of "laminar flow zone agglomeration" that exists in traditional single-shaft stirring.

[0032] Furthermore, the plurality of agitator blades of the first agitator roller 15 and the plurality of agitator blades of the second agitator roller 16 are staggered along the axial direction of the drive gear 13. For example, the 12 agitator blades of the first agitator roller 15 and the 12 agitator blades of the second agitator roller 16 are arranged alternately along the axial direction of the drive gear 13 with a phase angle difference θ = 30°, with the first agitator roller 15 as the main shaft and the second agitator roller 16 as the driven shaft. For example, the projected position of the end of the first agitator blade on the main shaft is located in the center of the gap between the first and second agitator blades on the driven shaft, while maintaining the minimum axial spacing between the two rollers. This structure forms a dynamic shear mesh when the two rollers rotate in opposite directions. When the main shaft agitator blades cut into the high viscosity zone of the glyphosate by-product slurry, the blades at the corresponding positions on the driven shaft are in the retraction phase, avoiding the generation of interference torque in the radial direction at the ends of the blades on both shafts; the axial misalignment causes the slurry to form a spiral propulsion flow within the mixing tank 11, increasing the flow velocity in the "axial flow dead zone" present in traditional symmetrical blades, and achieving full-domain forced convection mixing of sodium hydrogen phosphate crystals and organic colloids.

[0033] In some embodiments, see Figure 2 The vibration assembly 24 includes a secondary driven gear 241, a drive shaft 242, and a cam 243. The drive shaft 242 is connected to the secondary driven gear 241 and extends into the mixing tank 11. The secondary driven gear 241 meshes with the drive gear 13. The cam 243 is sleeved on the end of the drive shaft 242 away from the secondary driven gear 241, and the cam 243 is connected to the end of the primary sieve plate 22 away from the secondary driven gear 241.

[0034] For example, the secondary driven gear 241 meshes with the driving gear 13 of the stirring mechanism 1 at a reduction ratio of 2.5:1; one end of the transmission shaft 242 is connected to the secondary driven gear 241 via a spline, and the other end extends to the inner side of the stirring box 11. The base circle radius of the cam 243 is 25mm, and its lift curve is a cosine acceleration type. The cam 243 is fixed to the end of the transmission shaft 242, and its outer edge contour contacts the lower surface of the primary sieve plate 22 away from the hinge end. When the driving gear 13 drives the first stirring roller 15 to rotate at 300rpm, it drives the transmission shaft 242 to rotate at a uniform speed of 120rpm through gear meshing. At this time, the lift section of the cam 243 pushes the end of the sieve plate upward at a frequency of 2 times per second, and the return section moves downward under the action of the sieve plate's own weight, forming a mechanical vibration wave with amplitude. The technical solution of this embodiment uses the residual torque of the stirring power to drive the vibration component 24, which is beneficial to saving energy consumption and equipment costs compared to the solution of independently setting the linear motor 12 or the vibration motor 12.

[0035] In some embodiments, see Figure 2 and Figure 3 The primary ultrasonic component 23 includes multiple primary ultrasonic vibrators 231, which are located at the bottom of the primary sieve plate 22 and arranged in an array. For example, 12 piezoelectric ceramic ultrasonic vibrators with a resonant frequency of 40kHz±1.5% and a single-unit power of 60W are installed at the bottom of the primary sieve plate 22. They are evenly distributed in an orthogonal matrix with a row spacing of 100mm and a column spacing of 75mm. Each vibrator transmits longitudinal vibration waves vertically to the sieve surface via a titanium alloy amplitude transformer. The spacing between adjacent vibrators is designed to meet the acoustic interference conditions, resulting in a uniform standing wave sound field with a coverage of 98% on the sieve surface. The sound pressure intensity at the center point of the array is effectively increased due to the setting of multiple ultrasonic vibrators, which induces a violent cavitation effect and directly dissociates the hydrogen bond force between sodium hydrogen phosphate crystals, for example, crushing crystal clusters with a diameter of 50 μm to below 8 μm; under the action of ultrasound, periodic microjets are formed on the surface of the sieve plate, generating tangential acceleration on the colloidal adhesion layer in the glyphosate by-product slurry, thereby reducing its adhesion strength; and the composite sound waves generated by the array form a vortex ring structure inside the sieve holes, continuously peeling off the microcrystalline-colloidal complex that blocks the sieve holes, thereby cleaning the sieve holes of the primary sieve plate 22.

[0036] In some embodiments, see Figure 2The screening mechanism 2 also includes a primary feeding assembly 25 and a waste residue bin 26. The primary feeding assembly 25 is located on the inner wall of the screening box 21, and its feeding end is located on the primary screen plate 22. The waste residue bin 26 is located inside the screening box 21 and at the end of the primary screen plate 22 away from the hinge end, for receiving waste residue from the primary screen plate 22. For example, the primary feeding assembly 25, such as a pneumatic linear module, is installed on one side wall of the screening box 21, and the gap between its feeding end and the surface of the primary screen plate 22 is controlled to be 0.5mm ± 0.1mm. The waste residue bin 26 is located at the end of the screen plate away from the hinge, and the bin opening is lower than the end of the screen plate to ensure that all waste residue can enter the bin. During operation of the primary feeding assembly 25, it performs a reciprocating scraping motion every 120 seconds at a speed of 0.3 m / s, or it can be preset to perform a reciprocating scraping motion at other times, depending on the actual situation. The key is to ensure that the amount of waste residue on the primary screen plate 22 does not affect the screening process while minimizing the interruption of motor 12 movement. In the forward scraping stage: the scraper moves along the screen plate, forcibly pushing the coarse particles remaining after ultrasonic vibration, such as undispersed glyphosate colloids, into the waste residue bin 26. In the high-speed reset stage: the scraper retracts to its initial position at a high speed of 2 m / s. The inertial acceleration generated by the sudden speed change completely removes the residue from the scraper surface, avoiding the backflow accumulation problem of traditional low-speed return. Simultaneously, the waste residue bin 26 has a built-in load sensor that monitors the amount of waste residue in real time. When the set threshold is reached, an audible and visual alarm is triggered to prompt replacement. The entire slag discharge process works in tandem with ultrasonic vibration without interference, achieving continuous production.

[0037] Furthermore, an elastic anti-fall cloth 4 is provided between the primary waste slag outlet 261 of the waste slag box 26 and the end of the primary screen plate 22 away from the hinge. This is used to compensate for the gap between the primary waste slag outlet 261 and the primary screen plate 22, preventing some waste slag or slurry from falling between the primary waste slag outlet 261 and the primary screen plate 22. Because the anti-fall cloth 4 is elastic, it can adapt to the vibration of the primary screen plate 22 and continuously play the role of catching the slurry and waste slag.

[0038] In some embodiments, see Figure 2The screening mechanism 2 also includes a secondary sieve plate 28 and a secondary ultrasonic component 29. The secondary sieve plate 28 is located below the primary sieve plate 22, and the secondary ultrasonic component 29 includes multiple secondary ultrasonic vibrators arranged in an array at the bottom of the secondary sieve plate 28. For example, the secondary sieve plate 28 is arranged parallel to the primary sieve plate 22 at a distance of 200 mm below it, forming a secondary filtration chamber between them. The secondary ultrasonic component 29 consists of 24 high-frequency piezoelectric vibrators arranged in a hexagonal close-packed array at the bottom of the secondary sieve plate 28. Each vibrator focuses acoustic energy to the sieve aperture area through a titanium alloy amplitude transformer, forming a sound field interference network with a coverage of 99.5%. The effects of the secondary sieve plate 28 and the secondary ultrasonic component 29 are the same as those of the primary sieve plate 22 and the primary ultrasonic component 23, except for the ultrasonic intensity, ultrasonic coverage, and sieve aperture diameter. Therefore, the effects achieved by the combination of the secondary sieve plate 28 and the secondary ultrasonic component 29 will not be described in detail here.

[0039] Furthermore, the pore size of the secondary sieve plate 28 is smaller than that of the primary sieve plate 22. For example, the pore size of the secondary sieve plate 28 is strictly controlled at 40 μm, while the pore size of the primary sieve plate 22 is 80 μm. The pore size of the secondary sieve plate 28 is half that of the primary sieve plate 22, which is beneficial for further sieving of smaller solid particles, thus achieving the effect of filtering and further reducing solid particles in the slurry.

[0040] In some embodiments, the screening mechanism 2 further includes a secondary pusher assembly 27, which is disposed on the inner wall of the screening box 21 and the pusher end of the secondary pusher assembly 27 is disposed on the secondary screen plate 28. The waste residue box 26 has a secondary waste residue opening 262 on the side facing the secondary pusher assembly 27 and a baffle 263 is hinged at the secondary waste residue opening 262. The baffle 263 can open the secondary waste residue opening 262 under the action of the pusher end of the secondary pusher assembly 27.

[0041] For example, the secondary feeding assembly 27 is a pneumatic linear module, which is fixed to the side wall of the screening box 21, and its feeding end is clearance-fitted with the surface of the secondary screen plate 28. The waste residue box 26 has a secondary waste residue port 262 at the position corresponding to the end of the secondary screen plate 28. The waste residue port is equipped with a baffle 263 through a hinge shaft. The baffle 263 is pre-pressed to the wall of the waste residue box 26 by a torsion spring. The outward trigger arm of the baffle 263 extends to below the end of the screen plate, forming spatial interference with the movement trajectory of the feeding end of the secondary feeding assembly 27. When the secondary pusher assembly 27 pushes the ultrafine waste residue, such as nano-sized colloidal agglomerates, on the secondary screen plate 28 toward the waste residue inlet, the pusher end contacts the trigger arm of the baffle 263 at the end of its stroke, applying mechanical thrust to overcome the preload of the torsion spring, causing the baffle 263 to rotate around the hinge axis and open the secondary waste residue inlet 262; when the pusher end retracts at high speed, the pressure on the trigger arm disappears, the torsion spring drives the baffle 263 to quickly reset, and the shock wave generated by the reset acceleration causes the adhering substances on the surface of the baffle 263 to fall off.

[0042] In some embodiments, see Figure 2 The mixing tank 11 has a discharge port 111 at its bottom, and a solenoid valve (not shown in the figure) is installed at the discharge port 111. The discharge port 111 is connected to the screening box 21, and the solenoid valve is used to open and close the discharge port 111. For example, the discharge port 111 is provided at the bottom of the mixing tank 11, and this discharge port 111 is connected to the flange of the screening box 21. The solenoid valve is a straight-through plunger structure with a coil voltage of 24VDC. The valve seat is integrated into the inner cavity of the discharge port 111, and its plunger stroke controls the opening range of the discharge port 111 from 0 to 100%. This solenoid valve is based on viscosity adaptive control; for example, the solenoid valve coil current is dynamically adjusted according to the slurry viscosity. For example, when processing glyphosate by-product colloids, when its viscosity is 1200 cP, it opens to 25% to stabilize the flow rate within the desired speed range and prevent laminar splashing.

[0043] The basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0044] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic associated with at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0045] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the present application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0046] For each patent, patent application, patent application publication, and other material such as articles, books, specifications, publications, and documents referenced in this application, the entire contents of that patent application are incorporated herein by reference, except for historical application documents that are inconsistent with or conflict with the content of this application, and documents that limit the broadest scope of the claims of this application (currently or subsequently appended to this application). It should be noted that if there are any inconsistencies or conflicts between the descriptions, definitions, and / or terminology used in the supplementary materials of this application and the content of this application, the descriptions, definitions, and / or terminology used in this application shall prevail.

[0047] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A slurry screening device for batteries, characterized in that, include: A mixing mechanism is used to mix slurry. A screening mechanism is located below the mixing mechanism and is used to receive the slurry from the mixing mechanism; A storage tank, located below the screening mechanism, is used to receive the slurry after screening by the screening mechanism; The screening mechanism includes a screening box, a primary sieve plate, a primary ultrasonic component, and a vibration component. The screening box is connected to the discharge port of the stirring mechanism. One end of the primary sieve plate is hinged to the inner wall of the screening box. The primary ultrasonic component is located on the bottom side of the primary sieve plate and performs ultrasonic oscillation on the slurry adhering to the primary sieve plate. The vibration component is located below the primary sieve plate and its vibrating end is connected to the primary sieve plate to drive the primary sieve plate to vibrate.

2. The battery slurry screening device according to claim 1, characterized in that, The stirring mechanism includes a stirring box, a motor, a drive gear, a first-stage driven gear, a first stirring roller, and a second stirring roller. The motor is located on one side of the stirring box, the drive gear is sleeved on the output end of the motor, the first stirring roller is connected to the output end of the motor, the first-stage driven gear meshes with the drive gear, and the second stirring roller is drivenly connected to the first-stage driven gear.

3. The battery slurry screening device according to claim 2, characterized in that, The multiple stirring blades of the first stirring roller and the multiple stirring blades of the second stirring roller are staggered along the axial direction of the drive gear.

4. The battery slurry screening device according to claim 2, characterized in that, The vibration assembly includes a secondary driven gear, a drive shaft, and a cam. The drive shaft is connected to the secondary driven gear and extends into the mixing tank. The secondary driven gear meshes with the driving gear. The cam is sleeved on the end of the drive shaft away from the secondary driven gear, and the cam is connected to the end of the primary sieve plate away from the secondary driven gear.

5. The battery slurry screening device according to claim 1, characterized in that, The primary ultrasonic component includes multiple primary ultrasonic vibrators, which are located at the bottom of the primary sieve plate and arranged in an array.

6. The battery slurry screening device according to claim 1, characterized in that, The screening mechanism further includes a primary feeding assembly and a waste residue box. The primary feeding assembly is located on the inner wall of the screening box and the feeding end of the primary feeding assembly is located on the primary screen plate. The waste residue box is located in the screening box and at the end of the primary screen plate away from the hinge end, and is used to receive waste residue from the primary screen plate.

7. The battery slurry screening device according to claim 6, characterized in that, The screening mechanism further includes a secondary sieve plate and a secondary ultrasonic component. The secondary sieve plate is located below the primary sieve plate, and the secondary ultrasonic component includes multiple secondary ultrasonic vibrators, which are arranged in an array at the bottom of the secondary sieve plate.

8. The battery slurry screening device according to claim 7, characterized in that, The sieve aperture of the secondary sieve plate is smaller than that of the primary sieve plate.

9. The battery slurry screening device according to claim 7, characterized in that, The screening mechanism further includes a secondary pushing component, which is located on the inner wall of the screening box and has its pushing end on the secondary screen plate. The waste residue box has a secondary waste residue opening on the side facing the secondary pushing component and a baffle is hinged at the secondary waste residue opening. The baffle can open the secondary waste residue opening under the action of the pushing end of the secondary pushing component.

10. The battery slurry screening device according to claim 2, characterized in that, The bottom of the mixing tank is provided with a discharge port and a solenoid valve is provided at the discharge port. The discharge port is connected to the screening box and the solenoid valve is used to open and close the discharge port.

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