A water wash tank

Abstract

The utility model relates to lithium battery positive pole material processing technical field discloses a kind of water washing jar, comprising: jar body, jar body is hollow cylindrical structure, its bottom is cambered surface structure, for accommodating cleaning fluid and water washing material to be prepared;Ultrasonic generator, ultrasonic generator is installed in the lateral wall of jar body, and is fixedly connected with the lateral wall of jar body;Stirring assembly, stirring assembly is set in jar body interior, and the rotation axis of stirring assembly is along the axial setting of water washing jar cylinder body.The combination structure of hollow cylindrical jar body, ultrasonic generator and stirring assembly is set, the full contact of cleaning fluid and material and efficient cleaning are realized.The hollow cylindrical design of jar body not only can effectively gather material, but also can promote the circulating flow of cleaning fluid, reduce cleaning dead angle.Ultrasonic generator is installed in lateral wall, can directly emit ultrasonic wave to jar body interior, and the stirring assembly of axial setting ensures that every part of material can be affected by ultrasonic wave and cleaning fluid.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery cathode material processing technology, specifically to a water washing tank. Background Technology

[0002] Currently, in the production process of cathode materials, the water washing process is a key step in reducing residual alkali on the material surface. This process typically involves immersing or stirring the material in deionized water, utilizing the physicochemical reaction between water and surface Li+ ions to dissolve and remove excess lithium compounds. The washing time and process parameters must be strictly controlled to ensure effective removal of residual alkali. The widespread application of the water washing process stems from its ease of operation, low cost, and ability to significantly reduce residual alkali on the material surface, thereby improving the battery's cycle performance and safety.

[0003] Although water washing effectively reduces residual alkali, it has irreversible negative impacts on the structure and properties of the material itself. In related technologies, while removing excess Li+ from the material surface, water washing also negatively affects the material's structure, and this impact is often irreversible and gradually intensifies with prolonged washing time. To achieve a good and uniform washing effect, there are often minimum requirements for washing time. Therefore, improving washing efficiency and reducing the material's contact time with water are areas for improvement in the water washing process. Utility Model Content

[0004] In view of this, the present invention provides a water washing tank to solve the problem of low water washing efficiency in the prior art.

[0005] This utility model provides a washing tank, comprising:

[0006] The tank body is a hollow cylindrical structure with an arc-shaped bottom, used to hold the cleaning liquid and the material to be washed.

[0007] An ultrasonic generator is installed on the side wall of the tank and is fixedly connected to the side wall of the tank.

[0008] The stirring assembly is located inside the tank, and the rotation axis of the stirring assembly is arranged along the axial direction of the washing tank.

[0009] Beneficial Effects: The combined structure of a hollow cylindrical tank, an ultrasonic generator, and a stirring assembly achieves full contact between the cleaning fluid and the material, resulting in highly efficient cleaning. The hollow cylindrical design of the tank provides ample space, while the curved bottom effectively collects material and promotes the circulation of the cleaning fluid, reducing dead zones. The ultrasonic generator, mounted on the side wall, emits ultrasonic waves directly into the tank, effectively removing stubborn stains from the material surface. Simultaneously, the axially positioned stirring assembly, during rotation, evenly disperses the material in three-dimensional space, preventing sedimentation and ensuring that every part of the material is affected by the ultrasonic waves and the cleaning fluid. This improves cleaning efficiency and cleanliness, making it particularly suitable for cleaning precision parts or complex-shaped materials requiring high cleanliness.

[0010] In one optional embodiment, there are multiple ultrasonic generators, which are evenly distributed along the circumference of the tank on the side wall of the tank, and the installation height of the multiple ultrasonic generators is the same.

[0011] Beneficial effects: By evenly distributing multiple ultrasonic generators along the circumference of the tank and installing them at the same height, a stable and uniform ultrasonic field can be formed inside the tank. This avoids the uneven energy distribution problem that may be caused by traditional single-point ultrasonic generators, ensuring that materials in all areas of the tank are subjected to ultrasonic waves of the same intensity, thereby eliminating cleaning blind spots. The consistent installation height ensures that ultrasonic energy is released evenly on the same horizontal plane, further improving the uniformity of cleaning, which is especially suitable for applications with high requirements for cleanliness consistency. The synergistic effect of multiple ultrasonic generators can also enhance the intensity of cavitation, improve cleaning efficiency, and shorten cleaning time.

[0012] In one alternative embodiment, the stirring assembly includes a blade shaft and at least two blade bodies, the blade shaft being coaxially arranged with the washing tank body, and the blade bodies extending radially along the blade shaft and spaced apart axially along the blade shaft.

[0013] Beneficial Effects: The mixing assembly employs a coaxially arranged impeller shaft and radially extending impeller body, forming a multi-layered mixing structure through axial spacing. This generates multi-stage fluid shear force, enhancing the mixing effect. The impeller shaft is coaxially aligned with the washing tank body, ensuring uniform force distribution during mixing and reducing vibration and noise. The radially extending impeller body, distributed axially at intervals, creates a three-dimensional mixing field, causing materials to tumble within the tank, preventing sedimentation or localized accumulation. This effectively prevents material settling and ensures that every part of the material fully contacts the cleaning fluid and ultrasonic waves, thereby improving the thoroughness and consistency of cleaning.

[0014] In one alternative embodiment, the bottom of the tank is provided with a discharge port, and the discharge port is provided with an openable and closable valve to control the discharge of the cleaned material.

[0015] Beneficial effects: The discharge port at the bottom of the tank, equipped with an openable / closable valve, enables rapid and controlled discharge of cleaned materials. The curved bottom structure helps materials naturally gather at the discharge port under gravity, reducing residue and improving material recovery rate. The valve's opening and closing control makes operation more flexible, allowing adjustment of the discharge speed according to the cleaning progress, preventing material blockage or liquid splashing. It facilitates the replacement of cleaning fluid and the cleaning and maintenance of the tank, improving the continuous operation efficiency of the equipment. For processes requiring multiple cleaning cycles, cleaning fluid can be quickly emptied and refilled, reducing downtime and improving production efficiency.

[0016] In one optional embodiment, the inner wall of the tank is provided with a mounting base for mounting an ultrasonic generator. The mounting bases are distributed at intervals along the circumference of the tank. The mounting bases have grooves adapted to the ultrasonic generators. The ultrasonic generators are embedded in the grooves and fixed by fasteners.

[0017] Beneficial effects: By installing mounting bases on the inner side wall of the tank and creating grooves on the mounting bases that are compatible with the ultrasonic generator, precise positioning and stable installation of the ultrasonic generator can be achieved. The groove embedding not only improves installation accuracy but also effectively prevents displacement or loosening of the ultrasonic generator under long-term vibration, ensuring stable output of ultrasonic energy. The fastener fixing method facilitates disassembly and maintenance while enhancing the durability of the equipment. The mounting bases are spaced apart along the circumference of the tank, ensuring a uniform arrangement of the ultrasonic generators while avoiding the impact of overly dense installation on the structural strength of the tank.

[0018] In one alternative embodiment, the top of the tank is provided with a feeding port, the size of which is adapted to the size of the material to be fed in.

[0019] Beneficial effects: A feeding port at the top of the tank, appropriately sized to match the material to be added, effectively controls the feeding process, preventing splashing or scattering. The optimal size of the feeding port ensures efficient feeding while preventing cleaning fluid evaporation or the entry of external contaminants due to an overly large opening. Top feeding facilitates material addition by operators, reducing labor intensity, minimizing cleaning fluid evaporation loss and environmental pollution, while also reducing noise and ultrasonic energy leakage, thus improving operational safety and environmental friendliness.

[0020] In one alternative implementation, the housing of the ultrasonic generator is cylindrical, and its emitting end faces the interior of the tank.

[0021] Beneficial effects: The cylindrical shell of the ultrasonic generator facilitates the directional emission of ultrasonic energy, reducing energy scattering and loss. The arrangement of the transmitting end facing the inside of the tank maximizes the utilization rate of ultrasonic energy, ensuring that the sound waves directly act on the cleaning fluid and materials, thus improving cleaning efficiency. The cylindrical structure also facilitates installation and fixation, while reducing fluid resistance and avoiding interference with the agitation flow field.

[0022] In one alternative embodiment, an observation window is provided on the side wall of the tank. The observation window is made of transparent and corrosion-resistant material and is used to observe the cleaning process of the materials inside the tank.

[0023] Beneficial effects: A transparent, corrosion-resistant observation window installed on the side wall of the tank allows for real-time monitoring of the cleaning process, facilitating timely adjustments to cleaning parameters or detection of anomalies by operators. The transparent, corrosion-resistant material exhibits excellent chemical resistance, withstanding long-term erosion by the cleaning fluid without affecting visibility. The observation window design reduces the need for frequent opening of the tank for inspection, avoiding temperature fluctuations or contamination of the cleaning fluid caused by frequent opening, while also improving operational safety. For processes requiring precise control of cleaning time, the observation window provides a direct monitoring method, helping to optimize the cleaning process and improve product quality.

[0024] In one optional embodiment, the blade body has an arc-shaped structure with the concave surface of the arc facing the stirring direction, and both ends of the blade body extend away from the blade axis to form inclined portions, with the inclined portions forming an angle with the main body of the blade body.

[0025] Beneficial Effects: The curved blade body combined with the inclined ends creates complex hydrodynamic effects during stirring. The concave surface facing the stirring direction enhances the shear force and directionality of the fluid, improving stirring efficiency. The extended design of the inclined ends further enhances the axial and radial movement of the fluid, creating a three-dimensional circulation of material within the tank and preventing localized stagnation. This blade structure is particularly suitable for cleaning viscous liquids or easily agglomerated materials, effectively breaking up clumps and promoting uniform material dispersion. Simultaneously, the curved design reduces stirring resistance, lowers energy consumption, and extends the service life of the stirring components.

[0026] In one alternative embodiment, the housing of the ultrasonic generator is made of a corrosion-resistant material and has an anti-rust coating on its surface.

[0027] Beneficial effects: The ultrasonic generator housing is made of corrosion-resistant materials and coated with an anti-rust coating, which significantly improves the equipment's durability in harsh cleaning environments. The corrosion-resistant materials resist the erosion of acids, alkalis, or organic solvents, while the anti-rust coating further isolates the device from direct contact with humid environments and chemical media, effectively delaying the corrosion and aging of metal components. This extends the service life of the ultrasonic generator and reduces maintenance frequency and replacement costs. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the water washing tank of this utility model;

[0030] Figure 2 This is a top view of the water washing tank of this utility model.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Tank body; 2. Ultrasonic generator; 3. Agitator assembly; 31. Blade body; 32. Blade shaft. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0037] The water washing process in cathode material production is a crucial step in reducing surface residual alkali. This primarily involves immersing or stirring the material in deionized water, utilizing the physicochemical interaction between water and surface Li+ ions to dissolve and remove excess lithium compounds. This process is widely used due to its simplicity, low cost, and significant reduction in residual alkali, effectively improving battery cycle performance and safety. However, the washing time and process parameters must be strictly controlled to ensure uniform removal of residual alkali while avoiding performance degradation caused by over-washing. Despite the significant effectiveness of the water washing process, its potential negative impact on the material structure cannot be ignored.

[0038] During the washing process, while a large amount of Li+ ions on the material surface are washed away, the material's bulk structure may also be damaged. This damage is often irreversible and intensifies with prolonged washing time. To achieve the desired residual alkali removal effect, the washing time usually needs to meet a minimum requirement. However, prolonged contact with water will exacerbate the deterioration of the material structure, such as the collapse of layered structures or the dissolution of transition metals, thereby affecting electrochemical performance.

[0039] The following is combined Figures 1 to 2 The following describes embodiments of the present invention.

[0040] According to an embodiment of the present invention, a washing tank is provided, comprising: a tank body 1, which is a hollow cylindrical structure with an arc-shaped bottom for containing cleaning liquid and materials to be washed; an ultrasonic generator 2, which is installed on the side wall of the tank body 1 and fixedly connected to the side wall of the tank body 1; and a stirring assembly 3, which is disposed inside the tank body 1, and the rotation axis of the stirring assembly 3 is arranged along the axial direction of the washing tank body.

[0041] By combining a hollow cylindrical tank 1, an ultrasonic generator 2, and a stirring assembly 3, the system achieves full contact between the cleaning fluid and the material, resulting in highly efficient cleaning. The hollow cylindrical design of the tank 1 provides ample space, while the curved bottom effectively collects material and promotes the circulation of the cleaning fluid, reducing dead zones. The ultrasonic generator 2, mounted on the side wall, directly emits ultrasonic waves into the tank 1, effectively removing stubborn stains from the material surface. Simultaneously, the axially positioned stirring assembly 3 rotates, causing the material to disperse evenly in three-dimensional space, preventing sedimentation and ensuring that every part of the material is affected by the ultrasonic waves and the cleaning fluid. This improves cleaning efficiency and cleanliness, making it particularly suitable for cleaning precision parts or complex-shaped materials requiring high cleanliness.

[0042] Specifically, pure water and materials are added to the washing tank in a pre-designed weight ratio, with the stirring paddle activated according to process requirements during the feeding process. After all materials have entered the washing tank, the ultrasonic frequency is set. Generally, medium-frequency ultrasound is used for micron-sized particles, with a frequency range of 40-80kHz. After the washing time meets the process requirements, the ultrasound is turned off, and the materials are discharged. The ultrasonic frequency setting can be adjusted according to the total weight of materials and water in tank 1; when the amount of material increases, the frequency can be appropriately increased.

[0043] In some embodiments, combined with Figure 1 As shown, there are multiple ultrasonic generators 2, which are evenly distributed along the circumference of the tank 1 on the side wall of the tank 1, and the installation height of the multiple ultrasonic generators 2 is the same.

[0044] By evenly distributing multiple ultrasonic generators 2 around the circumference of the tank 1 and installing them at the same height, a stable and uniform ultrasonic field can be formed inside the tank. This avoids the uneven energy distribution problem that may be caused by traditional single-point ultrasonic generators 2, ensuring that materials in all areas of the tank are subjected to ultrasonic waves of the same intensity, thereby eliminating cleaning blind spots. The consistent installation height ensures that ultrasonic energy is released evenly on the same horizontal plane, further improving the uniformity of cleaning, which is especially suitable for applications with high requirements for cleanliness consistency. The synergistic effect of multiple ultrasonic generators 2 can also enhance the intensity of cavitation effect, improve cleaning efficiency, and shorten cleaning time.

[0045] In some embodiments, combined with Figure 1As shown, the stirring assembly 3 includes a paddle shaft 32 and at least two paddle bodies 31. The paddle shaft 32 is coaxially arranged with the washing tank body, and the paddle bodies 31 extend radially along the paddle shaft 32 and are spaced apart axially along the paddle shaft 32. The stirring assembly 3 uses a coaxially arranged paddle shaft 32 and radially extending paddle bodies 31, and forms a multi-layer stirring structure through axial spacing, which can generate multi-stage fluid shear force and improve the stirring effect. The paddle shaft 32 is coaxially arranged with the washing tank body, ensuring uniform force during stirring and reducing vibration and noise. The radial extension and axial spacing of the paddle bodies 31 can form a three-dimensional stirring field, causing the material to tumble inside the tank, avoiding sedimentation or local accumulation, effectively preventing material settling, and ensuring that each part of the material can fully contact the cleaning liquid and ultrasonic action, thereby improving the thoroughness and consistency of cleaning.

[0046] Furthermore, the impeller body 31 has an arc-shaped structure, with the concave surface facing the stirring direction. Both ends of the impeller body 31 extend away from the impeller shaft 32, forming inclined sections that form an angle with the main body of the impeller body 31. This arc-shaped impeller body 31, combined with the inclined sections at both ends, creates complex hydrodynamic effects during stirring. The concave surface facing the stirring direction enhances the shear force and directionality of the fluid, improving stirring efficiency. The extended inclined sections further enhance the axial and radial movement of the fluid, creating a three-dimensional circulation of material within the tank and preventing localized stagnation. This impeller structure is particularly suitable for cleaning viscous liquids or easily agglomerated materials, effectively breaking up clumps and promoting uniform material dispersion. Simultaneously, the arc-shaped design reduces stirring resistance, lowers energy consumption, and extends the service life of the stirring assembly 3.

[0047] As one implementation, the impeller shaft 32 of the stirring assembly 3 has an axially continuous cooling channel inside. Both ends of the cooling channel are connected to an external circulating cooling system. This cooling channel design effectively controls the temperature rise of the stirring shaft during long-term operation, preventing deformation or seal failure due to thermal expansion. The external circulating cooling system can precisely adjust the flow rate of the cooling medium, keeping the impeller shaft 32 within its optimal operating temperature range. This solution is particularly suitable for high-temperature cleaning environments or processes requiring cooling and stirring. Furthermore, the presence of the cooling channel enhances the structural rigidity of the impeller shaft 32.

[0048] In some embodiments, combined with Figure 2As shown, tank 1 has a discharge port at its bottom, equipped with an openable and closable valve to control the discharge of cleaned material. The discharge port and valve at the bottom of tank 1 enable rapid and controllable discharge of cleaned material. The curved bottom structure helps material naturally gather at the discharge port under gravity, reducing residue and improving material recovery rate. The valve's opening and closing control makes operation more flexible, allowing adjustment of the discharge speed according to the cleaning progress, preventing material blockage or liquid splashing. It facilitates the replacement of cleaning fluid and the cleaning and maintenance of tank 1, improving the continuous operation efficiency of the equipment. For processes requiring multiple cleaning cycles, cleaning fluid can be quickly drained and refilled, reducing downtime and improving production efficiency.

[0049] In some embodiments, the inner wall of the tank 1 is provided with a mounting base for mounting the ultrasonic generator 2. The mounting bases are distributed circumferentially along the tank 1. The mounting bases have grooves adapted to the ultrasonic generator 2. The ultrasonic generator 2 is embedded in the grooves and fixed by fasteners.

[0050] By setting mounting seats on the inner wall of tank 1 and creating grooves on the mounting seats that are compatible with ultrasonic generator 2, precise positioning and stable installation of ultrasonic generator 2 can be achieved. The groove embedding not only improves installation accuracy but also effectively prevents displacement or loosening of ultrasonic generator 2 under long-term vibration, ensuring stable output of ultrasonic energy. The fastener fixing method facilitates disassembly and maintenance while enhancing the durability of the equipment. The mounting seats are spaced apart around the circumference of tank 1, ensuring a uniform arrangement of ultrasonic generator 2 while avoiding the impact of overly dense installation on the structural strength of tank 1.

[0051] As one possible implementation, an adjustable-angle mounting bracket is provided between the ultrasonic generator 2 and the side wall of the tank 1. The mounting bracket can drive the ultrasonic generator 2 to deflect. The adjustable angle design allows the ultrasonic radiation direction to be optimized according to the material characteristics. For example, for sedimentary materials, it can be deflected downwards to enhance the bottom effect. The flexible adjustment of the mounting bracket can meet the sound field requirements of different cleaning stages, with a large angle to disperse dirt in the early stage and a small angle for concentrated cleaning in the later stage.

[0052] In some embodiments, a feeding port is provided at the top of the tank 1, the size of which is adapted to the size of the material to be fed. Providing a feeding port at the top of the tank 1 with a size adapted to the material to be fed effectively controls the material feeding process, preventing splashing or scattering. The appropriate size of the feeding port ensures feeding efficiency while preventing the evaporation of cleaning fluid or the entry of external contaminants due to an excessively large opening. Top feeding facilitates material feeding by operators, reduces labor intensity, minimizes cleaning fluid evaporation loss and environmental pollution, while also reducing noise and ultrasonic energy leakage, improving operational safety and environmental friendliness.

[0053] In some embodiments, the housing of the ultrasonic generator 2 is cylindrical, with its emitting end facing the interior of the tank 1. The cylindrical housing of the ultrasonic generator 2 facilitates the directional emission of ultrasonic energy, reducing energy scattering and loss. The arrangement of the emitting end facing the interior of the tank 1 maximizes the utilization rate of ultrasonic energy, ensuring that the sound waves directly act on the cleaning fluid and materials, thereby improving cleaning efficiency. The cylindrical structure also facilitates installation and fixation, while reducing fluid resistance and avoiding interference with the agitation flow field.

[0054] An observation window made of transparent, corrosion-resistant material is provided on the side wall of tank 1 for observing the cleaning process of the materials inside the tank. This observation window allows for real-time monitoring of the cleaning process, facilitating timely adjustments to cleaning parameters or detection of anomalies by operators. The transparent, corrosion-resistant material exhibits excellent chemical resistance, enduring long-term erosion by the cleaning fluid without affecting the clarity of observation. The observation window design reduces the need for frequent opening of the tank for inspection, avoiding temperature fluctuations or contamination of the cleaning fluid caused by frequent opening, while also improving operational safety. For processes requiring precise control of cleaning time, the observation window provides a direct monitoring method, helping to optimize the cleaning process and improve product quality.

[0055] In some embodiments, the housing of the ultrasonic generator 2 is made of a corrosion-resistant material, and the surface of the housing is coated with an anti-rust coating. The use of a corrosion-resistant material and the application of an anti-rust coating to the housing of the ultrasonic generator 2 significantly improves the durability of the device in harsh cleaning environments. The corrosion-resistant material resists the erosion of acids, alkalis, or organic solvents, while the anti-rust coating further isolates the device from direct contact with humid environments and chemical media, effectively delaying the corrosion and aging of metal components. This extends the service life of the ultrasonic generator 2 and reduces maintenance frequency and replacement costs.

[0056] The specific workflow is as follows: This device improves the dispersion effect of materials in water during the washing process by installing a compressed air generator at the corresponding position in the washing tank. By setting a certain ultrasonic frequency, it can quickly break up the agglomerated materials during the washing process, allowing them to fully contact the water and complete the washing in a short time, thus ensuring the washing effect while preventing the materials from contacting the water for too long.

[0057] According to the process requirements, a certain amount of pure water and materials are added to the washing tank one after another. When adding materials, stirring is required. During the washing process, the ultrasonic generator 2 is turned on according to the total weight of materials and water. The generator frequency is set to a suitable value between 40-80kHz, with an initial setting of 60Hz, corresponding to a total weight of materials and water of about 1.5t. The washing time is set according to the process requirements. After the washing is completed, the ultrasonic generator 2 is turned off, and the materials are discharged to the next process.

[0058] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and all such modifications and variations fall within the scope defined by the present invention.

Claims

1. A washing tank, characterized in that, include: Tank (1), the tank (1) is a hollow columnar structure with an arc-shaped bottom, used to hold cleaning liquid and materials to be washed; An ultrasonic generator (2) is installed on the side wall of the tank (1) and is fixedly connected to the side wall of the tank (1). A stirring assembly (3) is disposed inside the tank body (1), and the rotation axis of the stirring assembly (3) is arranged along the axial direction of the washing tank body.

2. The washing tank according to claim 1, characterized in that, The number of ultrasonic generators (2) is multiple, and the multiple ultrasonic generators (2) are evenly distributed on the side wall of the tank (1) along the circumference of the tank (1), and the installation height of the multiple ultrasonic generators (2) is the same.

3. The washing tank according to claim 1, characterized in that, The stirring assembly (3) includes a blade shaft (32) and at least two blade bodies (31). The blade shaft (32) is coaxially arranged with the water washing tank body. The blade bodies (31) extend radially along the blade shaft (32) and are spaced apart axially along the blade shaft (32).

4. The washing tank according to claim 1, characterized in that, The bottom of the tank (1) is provided with a discharge port, and the discharge port is provided with an openable and closable valve for controlling the discharge of the cleaned material.

5. The washing tank according to claim 1, characterized in that, The inner wall of the tank (1) is provided with a mounting base for installing the ultrasonic generator (2). The mounting bases are distributed circumferentially along the tank (1). The mounting bases have grooves adapted to the ultrasonic generator (2). The ultrasonic generator (2) is embedded in the grooves and fixed by fasteners.

6. The washing tank according to claim 1, characterized in that, The top of the tank (1) is provided with a feeding port, the size of which is adapted to the size of the material to be fed in.

7. The washing tank according to claim 1, characterized in that, The outer shell of the ultrasonic generator (2) is cylindrical, and its emitting end faces the inside of the tank (1).

8. The washing tank according to claim 1, characterized in that, The tank (1) has an observation window on its side wall. The observation window is made of transparent anti-corrosion material and is used to observe the cleaning status of the material inside the tank.

9. The washing tank according to claim 3, characterized in that, The blade body (31) has an arc-shaped structure with the concave surface facing the stirring direction. Both ends of the blade body (31) extend away from the blade shaft (32) and form inclined portions. The inclined portions form an angle with the main body of the blade body (31).

10. The washing tank according to claim 1, characterized in that, The housing of the ultrasonic generator (2) is made of corrosion-resistant material and has an anti-rust coating on its surface.

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