Dynamic wet demagnetizing device for spherical oxide powder

Abstract

The utility model provides a spherical oxide powder dynamic wet demagnetizing device which comprises a device body, the device body is vertically arranged, a spiral flow deflector is arranged in the device body, an inlet is formed in the lower end of the side wall of the device body, and an outlet is formed in the upper end of the side wall of the device body. The spiral flow deflector spirals from the inlet to the outlet along the inner wall of the device body; a discharge hole of the slurry blending barrel is communicated with the inlet through a water pump, and a stirring device is arranged in the slurry blending barrel; the slurry collecting barrel is communicated with the outlet; the strong magnetic rod assembly is detachably connected with the device body, and the rotating center axis of the strong magnetic rod assembly coincides with the rotating center axis of the device body. The demagnetizing device disclosed by the utility model can be used for effectively removing magnetic impurities in powder particles.

Description

Technical Field

[0001] This application relates to the field of powder processing equipment technology, and in particular to a dynamic wet demagnetization device for spherical oxide powder. Background Technology

[0002] In the electronics field, electronic-grade spherical oxide powders are widely used. However, excessively high levels of magnetic impurities in the powder have become a critical issue. As electronic products continue to evolve towards miniaturization, thinning, and weight reduction, the quality requirements for electronic-grade spherical oxide powders are becoming increasingly stringent, with the requirements for magnetic impurity content reaching unprecedented levels. The presence of magnetic impurities can severely affect product performance. For example, if the magnetic impurity content in electronic-grade spherical oxide powder is too high, it will lead to a decrease in the insulation of the substrate, thus having a significant negative impact on product reliability. In current industrial production, the commonly used demagnetization methods are mainly dry demagnetization and wet demagnetization.

[0003] Dry demagnetization is a common method that can remove most magnetic materials. However, even so, about 2% of magnetic material will remain, which is far from meeting the requirements of modern electronic products that have extremely high requirements for the content of magnetic impurities.

[0004] Commonly used wet demagnetization methods typically employ static demagnetization. While this method can improve demagnetization efficiency to some extent, reducing magnetic impurity content to 5 ppm, it still falls significantly short of the industry standard of 1 ppm required for high-quality products.

[0005] Existing demagnetization technologies have shown significant shortcomings when faced with the stringent requirements for low magnetic impurity content in electronic-grade spherical oxide powders. Therefore, the development of a novel and efficient demagnetization method and apparatus is urgently needed. Summary of the Invention

[0006] In view of this, this application provides a dynamic wet demagnetization device for spherical oxide powder to solve at least one problem existing in the background art, comprising,

[0007] The device body is vertically arranged, and a spiral guide vane is provided inside the device body. An inlet is provided at the lower end of the side wall of the device body, and an outlet is provided at the upper end of the side wall of the device body. The spiral guide vane spirals along the inner wall of the device body from the inlet to the outlet to guide the slurry to move in a spiral manner within the device body.

[0008] A slurry mixing tank is configured to mix slurry. The outlet of the slurry mixing tank is connected to the inlet via a water pump. A stirring device is provided inside the slurry mixing tank.

[0009] A slurry collection tank, configured to store processed slurry, is connected to the outlet;

[0010] A strong magnetic rod assembly, wherein the strong magnetic rod assembly is detachably connected to the device body, and the rotation center axis of the strong magnetic rod assembly coincides with the rotation center axis of the device body.

[0011] Optionally, the upper end of the slurry mixing tank is provided with a powder inlet and a liquid inlet, the powder inlet being connected to a crushing device and the liquid inlet being connected to a deionized water supply device.

[0012] Optionally, the pulverizing device is equipped with a filter screen.

[0013] Optionally, the strong magnetic rod assembly includes a bracket and a strong magnetic rod, the strong magnetic rod being detachably connected to the bracket, and the bracket having a handle on the side away from the strong magnetic rod.

[0014] Optionally, the stirring device includes a paddle and a rotating shaft, the rotating shaft being driven by a motor.

[0015] Optionally, a flow regulating valve is provided between the inlet and the slurry mixing tank, and a pressure sensor is provided on the device body near the inlet.

[0016] Optionally, the device body is provided with a sampling port near the outlet, which is used to detect the amount of magnetic impurities remaining in the treated slurry.

[0017] Optionally, the discharge port of the slurry mixing tank is equipped with an on / off valve.

[0018] Optionally, the outlet is connected to the slurry collection tank via a quick-connect coupling.

[0019] Optionally, the slurry collection tank has a liquid level observation window on its side wall.

[0020] The beneficial effects of this application are as follows:

[0021] This invention discloses a dynamic wet demagnetizing device for spherical oxide powder. Through a unique design, it achieves spiral motion of the slurry within the device body, ensuring full contact between the slurry and the strong magnetic rod assembly. Compared to traditional static wet demagnetizing, this dynamic demagnetizing method significantly increases the contact time and area between the material and the demagnetizing components, thereby more effectively removing magnetic impurities and significantly improving demagnetizing efficiency. It is expected to reduce the magnetic impurity content to 1 ppm or even lower, meeting the industry's stringent requirements for high-quality electronic-grade spherical oxide powder.

[0022] This invention relates to a slurry mixing tank for a dynamic wet demagnetizing device for spherical oxide powder. The tank is equipped with a powder inlet and a liquid inlet, which are connected to a pulverizing device and a deionized water supply device, respectively, and a stirring device is installed inside. This design ensures that the powder and liquid can be uniformly mixed during slurry preparation, providing a stable and high-quality slurry for the subsequent demagnetizing process, and helping to improve the stability and consistency of the overall demagnetizing effect.

[0023] This invention relates to a dynamic wet demagnetizing device for spherical oxide powder. The strong magnetic rod assembly is detachably connected to the device body, facilitating cleaning, maintenance, or replacement of the strong magnetic rod assembly after a period of use, thus improving the equipment's service life and the sustainability of the demagnetizing effect. The slurry mixing tank has an on / off valve at its outlet for easy control of slurry output. A quick-connect coupling connects the outlet to the slurry collection tank, facilitating installation and disassembly, and promoting slurry collection and transfer. A liquid level observation window is provided on the side wall of the slurry collection tank, allowing operators to monitor the slurry level in real time and take timely follow-up actions.

[0024] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the slurry mixing tank in this practical application;

[0028] Figure 3 This is a schematic diagram of the structure of the device body of this utility model;

[0029] Figure 4 This is a schematic diagram of the strong magnetic rod assembly structure of this utility model;

[0030] Figure label:

[0031] 1. Device body; 11. Spiral guide vane; 12. Inlet; 13. Outlet; 14. Sampling port; 2. Slurry mixing tank; 21. Powder inlet; 22. Liquid inlet; 23. Filter screen; 24. Paddle; 25. Rotating shaft; 26. Valve; 3. Slurry collection tank; 4. Strong magnetic rod assembly; 41. Support; 42. Strong magnetic rod; 43. Handle; 5. Water pump; 6. Flow regulating valve; 7. Quick connection connector; 8. Liquid level observation window. Detailed Implementation

[0032] Exemplary embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the specific embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present application and to fully convey the scope of the disclosure of the present application to those skilled in the art.

[0033] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of this application. However, it will be apparent to those skilled in the art that this application can be practiced without one or more of these details. In other instances, to avoid confusion with this application, some technical features well-known in the art have not been described; that is, not all features of actual embodiments are described herein, nor are well-known functions and structures described in detail.

[0034] In the accompanying drawings, for clarity, the dimensions of layers, areas, and elements, as well as their relative dimensions, may be exaggerated. The same reference numerals denote the same elements throughout.

[0035] It should be understood that when an element or layer is referred to as "on," "adjacent to," "connected to," or "coupled to" other elements or layers, it may be directly on, adjacent to, connected to, or coupled to other elements or layers, or there may be intervening elements or layers. Conversely, when an element is referred to as "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" other elements or layers, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc., may be used to describe various elements, components, areas, layers, and / or portions, these elements, components, areas, layers, and / or portions should not be limited by these terms. These terms are only used to distinguish one element, component, area, layer, or portion from another element, component, area, layer, or portion. Therefore, without departing from the teachings of this application, the first element, component, area, layer, or portion discussed below may be referred to as a second element, component, area, layer, or portion. And the discussion of a second element, component, area, layer, or portion does not imply that the first element, component, area, layer, or portion necessarily exists in this application.

[0036] Spatial relation terms such as “below,” “under,” “below,” “under,” “above,” “above,” etc., are used herein for convenience of description to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms are intended to also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, then the element or feature described as “below,” “under,” or “below” other elements or features will be oriented “above” other elements or features. Therefore, the exemplary terms “below” and “under” can include both above and below orientations. The device may be otherwise oriented (rotated 90 degrees or otherwise) and the spatial descriptive terms used herein will be interpreted accordingly.

[0037] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. When used herein, the singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising” and / or “including,” when used in this specification, identify the presence of the stated features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups. When used herein, the term “and / or” includes any and all combinations of the associated listed items.

[0038] To fully understand this application, detailed steps and structures will be presented in the following description to illustrate the technical solution of this application. Preferred embodiments of this application are described in detail below; however, in addition to these detailed descriptions, this application may have other implementation methods.

[0039] This invention relates to a dynamic wet demagnetization device for spherical oxide powder. The specific implementation method will be described in detail below so that those skilled in the art can clearly understand and implement the invention.

[0040] like Figures 1 to 4 As shown, including,

[0041] The device body 1 is vertically arranged and contains a spiral guide vane 11. An inlet 12 is located at the lower end of the side wall of the device body, and an outlet 13 is located at the upper end of the side wall. The spiral guide vane spirals along the inner wall of the device body from the inlet to the outlet to guide the slurry in a spiral motion within the device body. The device body has a vertically arranged cylindrical structure. The internal spiral guide vane is fixed to the inner wall of the device body by welding or bolting. The pitch and height of the spiral guide vane are designed according to the actual slurry flow rate and demagnetization effect requirements to ensure that the slurry can move stably in a spiral motion within the device body. The pipe diameters of the inlet and outlet are selected according to the slurry flow rate and velocity requirements.

[0042] Slurry mixing tank 2, the slurry mixing tank is configured to mix slurry, the outlet of the slurry mixing tank is connected to the inlet via a water pump 5, and the slurry mixing tank is equipped with a stirring device;

[0043] The slurry collection tank 3 is configured to store the processed slurry and is connected to the outlet. The slurry prepared in the slurry mixing tank flows into the slurry collection tank after being processed by the device body under the action of the water pump.

[0044] The strong magnetic rod assembly 4 is detachably connected to the device body. Both the strong magnetic rod assembly and the device body are cylindrical, and the rotation center axis of the strong magnetic rod assembly coincides with the rotation center axis of the device body.

[0045] Furthermore, the upper end of the slurry mixing tank is respectively provided with a powder inlet and a liquid inlet. The powder inlet 21 is connected to the pulverizing device, and the liquid inlet 22 is connected to the deionized water supply device. By precisely controlling the weight of the pulverized powder and the flow rate of the deionized water, precise control of the slurry composition can be achieved, which helps to prepare high-quality slurry that meets specific process requirements and provides a guarantee for improving the demagnetization effect.

[0046] Furthermore, the pulverizing device is equipped with a filter screen 23. The filter screen is located between the pulverizing device and the slurry mixing tank.

[0047] Furthermore, the strong magnetic rod assembly includes a support 41 and a strong magnetic rod 42. The support is made of metal and possesses a certain strength and stability. The strong magnetic rod is detachably mounted on the support via threaded or magnetic connections, facilitating replacement. A handle 43 is welded or installed on the side of the support away from the strong magnetic rod, allowing operators to easily install or remove the strong magnetic rod assembly from the device body. After processing one batch of slurry, the strong magnetic rod is removed, and any magnetic material adhering to it is cleaned before processing the next batch of slurry. The magnetic field strength of the strong magnetic rod is selected based on the characteristics and content of the magnetic impurities to be processed, and it is generally made of a permanent magnet material with high magnetic field strength.

[0048] Furthermore, the stirring device includes impellers 24 and a rotating shaft 25. The rotating shaft is mounted on top of the mixing tank via sealed bearings, and the motor is mounted outside the mixing tank and connected to the rotating shaft via a coupling. The impellers are mounted on the rotating shaft, and the shape and number of the impellers are designed according to the volume of the mixing tank and the required stirring effect. Generally, high-efficiency stirring impellers such as inclined blades or turbine blades are used to ensure that the powder and liquid are thoroughly and evenly mixed.

[0049] Furthermore, a flow regulating valve 6 is installed between the inlet and the slurry mixing tank to precisely control the slurry flow rate entering the device, ensuring that the demagnetization process takes place under stable flow conditions. Simultaneously, a pressure sensor located near the inlet monitors the slurry pressure in real time, allowing operators to adjust equipment operating parameters promptly and ensuring safe and stable operation.

[0050] Furthermore, the device body is equipped with a sampling port 14 near the outlet, which is used to detect the amount of magnetic impurities remaining in the treated slurry. The sampling port allows operators to obtain samples of the treated slurry at any time to detect the amount of magnetic impurities remaining, so as to evaluate the demagnetization effect in a timely manner. If the demagnetization effect is found to be unsatisfactory, the equipment operating parameters can be adjusted or the equipment can be maintained in a timely manner.

[0051] Furthermore, the discharge port of the slurry mixing tank is equipped with an on / off valve 26. By controlling the valve's operation, the output of the slurry can be flexibly controlled, ensuring that the slurry mixing tank can output slurry of a specific concentration, while also ensuring the uniform distribution of spherical oxide powder in the slurry.

[0052] Furthermore, the outlet is connected to the slurry collection tank via a quick-connect coupling 7. This quick-connect coupling facilitates the rapid installation and removal of the slurry collection tank, allowing for timely transfer to the next workstation once the tank is full, thus improving the efficiency of slurry collection and transfer.

[0053] Furthermore, the slurry collection tank has a liquid level observation window 8 on its side wall. Operators can observe the slurry level in the tank in real time to avoid slurry overflow due to excessively high liquid level or disruption to production continuity due to excessively low liquid level, and facilitate timely arrangement of subsequent processing work.

[0054] It should be understood that the above embodiments are exemplary and are not intended to encompass all possible implementations included in the claims. Various modifications and changes can be made to the above embodiments without departing from the scope of this disclosure. Similarly, the various technical features of the above embodiments can be arbitrarily combined to form other embodiments of this application that may not be explicitly described. Therefore, the above embodiments only illustrate several implementations of this application and do not limit the scope of protection of this patent application.

Claims

1. A dynamic wet demagnetizing device for spherical oxide powder, characterized in that: include The device body is vertically arranged, and a spiral guide vane is provided inside the device body. An inlet is provided at the lower end of the side wall of the device body, and an outlet is provided at the upper end of the side wall of the device body. The spiral guide vane spirals along the inner wall of the device body from the inlet to the outlet to guide the slurry to move in a spiral manner within the device body. A slurry mixing tank is configured to mix slurry. The outlet of the slurry mixing tank is connected to the inlet via a water pump. A stirring device is provided inside the slurry mixing tank. A slurry collection tank, configured to store processed slurry, is connected to the outlet; A strong magnetic rod assembly, wherein the strong magnetic rod assembly is detachably connected to the device body, and the rotation center axis of the strong magnetic rod assembly coincides with the rotation center axis of the device body.

2. The dynamic wet demagnetizing device for spherical oxide powder according to claim 1, characterized in that: The upper end of the slurry mixing tank is provided with a powder inlet and a liquid inlet. The powder inlet is connected to the crushing device, and the liquid inlet is connected to the deionized water supply device.

3. The dynamic wet demagnetizing device for spherical oxide powder according to claim 2, characterized in that: The pulverizing device is equipped with a filter screen.

4. The dynamic wet demagnetizing device for spherical oxide powder according to claim 1, characterized in that: The strong magnetic rod assembly includes a bracket and a strong magnetic rod, the strong magnetic rod being detachably connected to the bracket, and the bracket having a handle on the side away from the strong magnetic rod.

5. The dynamic wet demagnetizing device for spherical oxide powder according to claim 1, characterized in that: The stirring device includes a paddle and a rotating shaft, the rotating shaft being driven by a motor.

6. The dynamic wet demagnetizing device for spherical oxide powder according to claim 1, characterized in that: A flow regulating valve is provided between the inlet and the slurry mixing tank, and a pressure sensor is provided on the main body of the device near the inlet.

7. The dynamic wet demagnetizing device for spherical oxide powder according to claim 1, characterized in that: The device body is provided with a sampling port near the outlet, which is used to detect the amount of magnetic impurities remaining in the treated slurry.

8. The dynamic wet demagnetizing device for spherical oxide powder according to claim 1, characterized in that: The discharge port of the slurry mixing tank is equipped with an opening and closing valve.

9. The dynamic wet demagnetizing device for spherical oxide powder according to claim 1, characterized in that: The outlet is connected to the slurry collection tank via a quick-connect coupling.

10. The dynamic wet demagnetizing device for spherical oxide powder according to claim 1, characterized in that: The slurry collection tank has a liquid level observation window on its side wall.

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