A magnetic powder core impregnation device

Abstract

This utility model relates to the technical field of metal magnetic powder core processing equipment, and discloses a magnetic powder core impregnation device, including an impregnation tank and a circulation pump. The impregnation tank is used to hold the impregnation liquid, and has a circulation inlet and a circulation outlet. The circulation inlet is located near the top of the impregnation tank, and the circulation outlet is located near the bottom of the impregnation tank. The circulation pump drives the impregnation liquid to circulate, generating a circulating liquid flow inside the impregnation tank. This effectively breaks up the temperature and concentration stratification of the impregnation liquid caused by static standing, ensuring that the temperature, viscosity, composition, and other properties of the impregnation liquid in the entire impregnation tank remain highly uniform. This improves the uniformity of the impregnation liquid, thereby significantly improving the uniformity of the magnetic powder core ring strength, enhancing the consistency of magnetic powder core quality, and solving the problem of inconsistent product quality and reduced product yield caused by uneven impregnation environment.

Description

Technical Field

[0001] This utility model relates to the technical field of metal magnetic powder core processing equipment, and in particular to a magnetic powder core impregnation device. Background Technology

[0002] Soft magnetic materials are functional materials characterized by low coercivity and high permeability. Their core technical indicators are the variability of magnetization and demagnetization and low magnetic loss. In alternating magnetic fields, high resistivity is required to reduce eddy current losses. Currently, material research focuses on optimizing magnetic properties for high-frequency applications, achieving lower core losses, and increasing saturation magnetic induction. However, during the impregnation process of soft magnetic materials, the impregnation solution is in a static state within the impregnation tank, making it difficult to ensure the uniformity of the impregnation solution and thus affecting the uniformity of the soft magnetic powder core strength. Utility Model Content

[0003] To address the aforementioned shortcomings, the purpose of this invention is to propose a magnetic powder core impregnation device to solve the problem of uneven magnetic powder core impregnation treatment.

[0004] To achieve this objective, the present invention adopts the following technical solution: A magnetic powder core impregnation device includes an impregnation tank and a circulation pump. The impregnation tank is used to hold the impregnation liquid. The impregnation tank is provided with a circulation inlet and a circulation outlet. The circulation inlet is located near the top of the impregnation tank, and the circulation outlet is located near the bottom of the impregnation tank. The circulation inlet is connected to the outlet of the circulation pump, and the circulation outlet is connected to the inlet of the circulation pump.

[0005] Preferably, both the circulation inlet and the circulation outlet are located on the side of the immersion tank, the height 'a' of the circulation inlet is 60-80% of the height 'h' of the immersion tank, the circulation outlet is located at the lowest point on the side, and both the circulation inlet and the circulation outlet point towards the center of the immersion tank.

[0006] Preferably, there are two circulation inlets and two circulation outlets, with the two circulation inlets facing each other on the side of the immersion tank and the two circulation outlets respectively located below the two circulation inlets.

[0007] Preferably, there are two circulation pumps, and the circulation inlet and circulation outlet located on the same side are respectively connected to the outlet and inlet of the same circulation pump.

[0008] Preferably, the water outlet of the circulation inlet is inclined downwards, and the angle θ with the horizontal plane is 0~60°.

[0009] Preferably, the height b of the intersection point A of the two circulation inlets' outlet directions is 30-50% of the height of the immersion tank.

[0010] Preferably, the system also includes a magnetic separator, which is disposed in the pipe between the circulation outlet and the inlet of the circulation pump, and the bottom of the immersion tank has a conical structure that is high in the middle and low around the edges.

[0011] Preferably, the circulating pump is a magnetically driven pump or a corrosion-resistant centrifugal pump.

[0012] Preferably, it also includes a heating element disposed on the side or bottom of the inner wall of the immersion tank.

[0013] Preferably, the device further includes a temperature sensor and a temperature controller. The temperature sensor is disposed on the side or bottom of the inner wall of the immersion tank and is located away from the heating element. The temperature controller is electrically connected to both the temperature sensor and the heating element.

[0014] The technical solution provided by this utility model can include the following beneficial effects: 1. A circulating pump drives the impregnation solution to circulate, creating a circulating flow within the impregnation tank. This effectively breaks down temperature and concentration stratification caused by static impregnation, ensuring high uniformity in temperature, viscosity, composition, and other properties of the impregnation solution throughout the tank, thus improving its homogeneity. Because all magnetic powder cores are in a uniform impregnation environment, each core receives the same quality of impregnation treatment. This directly improves the uniformity of resin penetration within the core, significantly enhancing the uniformity of core ring strength, improving core quality consistency, and resolving the problem of inconsistent product quality and reduced yield caused by uneven impregnation environments.

[0015] 2. The circulating impregnation solution has a scouring effect on the surface of the magnetic powder core, which helps to remove air bubbles in the micropores of the magnetic powder core, accelerates the penetration process of the impregnation solution, improves impregnation efficiency, and shortens the impregnation time.

[0016] 3. The technical improvements in this solution can be achieved by opening holes and adding components such as circulation pumps and pipelines to the traditional immersion tank. The structure is simple, the modification cost is low, and it is easy to operate. It is conducive to the transformation of existing production lines and has great promotion and application value.

[0017] 4. The symmetrical arrangement ensures uniform liquid flow within the impregnation tank, effectively avoiding dead zones and guaranteeing sufficient and uniform penetration of the impregnation solution. This significantly improves impregnation efficiency and quality, reduces product defects, and thus enhances the overall performance and reliability of the magnetic powder core.

[0018] The downward-sloping outlet direction allows the two liquid streams to form more effective convection and impact mixing within the impregnation tank, enhancing the agitation effect of the liquid. This not only helps to break down temperature and concentration gradients and ensure the uniformity of the impregnation solution, but also facilitates the full penetration of the impregnation solution into the magnetic powder core, reducing the generation of bubbles and voids, thereby significantly improving impregnation quality and efficiency.

[0019] By positioning the confluence area of ​​the two liquid outflows in the lower center of the impregnation tank, an optimal mixing zone is created. This precise intersection maximizes the overall mixing effect of the liquids, further breaking down temperature and concentration gradients within the impregnation solution and ensuring its uniformity throughout the tank. This is crucial for the stable and efficient impregnation of magnetic powder cores, further improving impregnation quality and product consistency, and avoiding problems such as localized overheating or under-impregnation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of an embodiment of the present invention, wherein the arrows indicate the direction of the circulating flow of the impregnating liquid.

[0021] Figure 2 This is a schematic diagram of another embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of another embodiment of the present invention, wherein the arrows indicate the direction of the circulating flow of the impregnating liquid.

[0023] The components include: 1 immersion tank, 11 circulation inlet, 12 circulation outlet, 2 circulation pump, 3 heating element, 4 temperature sensor, and 5 magnetic separator. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only used 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of these features, used to distinguish and describe features, without any order or emphasis.

[0026] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0027] 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 based on the specific circumstances.

[0028] A magnetic powder core impregnation device includes an impregnation tank 1 and a circulation pump 2. The impregnation tank 1 is used to hold the impregnation liquid. The impregnation tank 1 is provided with a circulation inlet 11 and a circulation outlet 12. The circulation inlet 11 is located near the top of the impregnation tank 1, and the circulation outlet 12 is located near the bottom of the impregnation tank 1. The circulation inlet 11 is connected to the outlet of the circulation pump 2, and the circulation outlet 12 is connected to the inlet of the circulation pump 2.

[0029] like Figure 1 As shown, the impregnation solution is driven by the circulating pump 2 to circulate, generating a circulating flow within the impregnation tank 1. This effectively breaks down temperature and concentration stratification caused by static impregnation, ensuring high uniformity in temperature, viscosity, composition, and other properties of the impregnation solution throughout the tank 1, thus improving its homogeneity. Since all magnetic powder cores are in a uniform impregnation environment, each core receives the same quality of impregnation treatment. This directly improves the uniformity of resin penetration within the core, significantly enhancing the uniformity of the core ring strength, improving core quality consistency, and resolving the problem of inconsistent product quality and reduced yield caused by uneven impregnation environments.

[0030] The circulating impregnation solution has a scouring effect on the surface of the magnetic powder core, which helps to remove air bubbles in the micropores of the magnetic powder core, accelerates the penetration process of the impregnation solution, improves impregnation efficiency, and shortens the impregnation time.

[0031] The technical improvements of this solution can be achieved by opening holes and adding components such as a circulating pump 2 and pipelines to the traditional impregnation tank 1. The structure is simple, the modification cost is low, and it is easy to operate. It is conducive to the transformation of existing production lines and has great promotion and application value.

[0032] During operation, an appropriate amount of impregnation liquid is first injected into the impregnation tank 1, covering approximately 85-90% of its height. Then, the circulation pump 2 is started. The circulation pump 2 draws the impregnation liquid from the circulation outlet 12 at the bottom and sprays it back into the impregnation tank 1 from the circulation inlet 11 at a certain pressure and flow rate, forming a continuous and uniform circulating liquid flow within the impregnation tank 1. Finally, the fixture loaded with iron-silicon or iron-silicon-aluminum magnetic powder cores is immersed in the impregnation liquid. In the uniformly flowing impregnation liquid environment, all magnetic powder cores can obtain consistent and sufficient impregnation treatment, ultimately resulting in a product with uniform ring strength and excellent quality.

[0033] Preferably, the circulation inlet 11 and the circulation outlet 12 are both located on the side of the immersion tank 1. The height a of the circulation inlet 11 is 60 to 80% of the height h of the immersion tank 1. The circulation outlet 12 is located at the lowest position on the side, and both the circulation inlet 11 and the circulation outlet 12 point to the middle of the immersion tank 1.

[0034] like Figure 2 As shown, the circulation inlet 11 faces the internal cavity of the impregnation tank 1 and is used to drive the impregnation liquid in the impregnation tank 1 to circulate and flow, so as to form a circulating and agitated liquid flow in the impregnation tank 1.

[0035] Preferably, there are two circulation inlets 11 and two circulation outlets 12. The two circulation inlets 11 are arranged opposite each other on the side of the immersion tank 1, and the two circulation outlets 12 are respectively arranged below the two circulation inlets 11.

[0036] The symmetrical arrangement ensures uniform liquid flow within the impregnation tank, effectively avoiding dead zones and guaranteeing thorough and uniform penetration of the impregnation solution. This significantly improves impregnation efficiency and quality, reduces product defects, and thus enhances the overall performance and reliability of the magnetic powder core.

[0037] Preferably, there are two circulation pumps, and the circulation inlet 11 and circulation outlet 12 located on the same side are respectively connected to the outlet and inlet of the same circulation pump 2.

[0038] The dual-circulation pumps create two independent liquid flows that can be controlled and adjusted independently, thereby optimizing the flow pattern within the impregnation tank more precisely and further improving impregnation uniformity and efficiency. Simultaneously, the dual pumps provide system redundancy, preventing production interruptions even if one pump fails, significantly enhancing the equipment's operational reliability and continuity.

[0039] Preferably, the water outlet direction of the circulation inlet 11 is inclined downward, and the angle θ with the horizontal plane is 0~60°.

[0040] The downward-sloping outlet direction allows the two liquid streams to form more effective convection and impact mixing within the impregnation tank, enhancing the agitation effect of the liquid. This not only helps to break down temperature and concentration gradients and ensure the uniformity of the impregnation solution, but also facilitates the full penetration of the impregnation solution into the magnetic powder core, reducing the generation of bubbles and voids, thereby significantly improving impregnation quality and efficiency.

[0041] Preferably, the height b of the intersection point A of the water outlet directions of the two circulation inlets 11 is 30-50% of the height of the immersion tank 1.

[0042] By positioning the confluence area of ​​the two liquid outflows in the lower center of the impregnation tank, an optimal mixing zone is created. This precise intersection maximizes the overall mixing effect of the liquids, further breaking down temperature and concentration gradients within the impregnation solution and ensuring its uniformity throughout the tank. This is crucial for the stable and efficient impregnation of magnetic powder cores, further improving impregnation quality and product consistency, and avoiding problems such as localized overheating or under-impregnation.

[0043] Preferably, it also includes a magnetic separator 5, which is disposed in the pipe between the circulation outlet 12 and the inlet of the circulation pump 2, and the bottom of the immersion tank 1 is a cone-shaped structure with a high center and low sides.

[0044] like Figure 3 As shown, in conjunction with the circulation outlet 12 located at the lowest point, impurities precipitated in the leachate are collected at the circulation outlet 12 and flow to the circulation pump 2. During this process, the liquid passes through a magnetic separator. The magnetic separator has a strong magnetic field region composed of permanent magnets inside. When the liquid flows through, since the impurities are mainly magnetic particles, the magnetic particles are adsorbed into the magnetic grid provided on the inner wall of the magnetic separator, thereby keeping the pool clean. Installing the magnetic separator in the inlet pipe of the circulation pump can protect the circulation pump. When the pump is shut down, the magnetic separator can be disassembled periodically to clean the adsorbed magnetic particles. In a specific embodiment, the magnetic separator uses a high-performance neodymium iron boron magnet rod, and the magnetic rod sheath and outer shell are preferably made of 316 stainless steel.

[0045] Preferably, the circulating pump 2 is a magnetically driven pump or a corrosion-resistant centrifugal pump.

[0046] These pumps have good sealing and corrosion resistance, are suitable for use with corrosive impregnating liquids, and prevent leakage.

[0047] Preferably, it also includes a heating element 3, which is disposed on the side or bottom of the inner wall of the immersion tank 1.

[0048] Used for heating the impurity solution. Heating can reduce the viscosity of the impurity solution, improving its fluidity and permeability.

[0049] Preferably, the device further includes a temperature sensor 4 and a temperature controller. The temperature sensor 4 is disposed on the side or bottom of the inner wall of the immersion tank 1, and the temperature sensor 4 is disposed away from the heating element 3. The temperature controller is electrically connected to the temperature sensor 4 and the heating element 3 respectively.

[0050] The temperature of the impregnation solution can be precisely controlled by a temperature controller (not shown in the figure) and a temperature sensor 4 to ensure process stability. The temperature sensor 4 and the heating element 3 are kept far apart to avoid the heating element 3 affecting the measurement results of the temperature sensor 4.

[0051] In one embodiment, the impregnation device is used for processing iron-silicon and iron-silicon-aluminum magnetic powder cores. The impregnation tank 1 is square, and the heating element 3 is an electric heating tube installed at the bottom of the impregnation tank 1. The electric heating tube is used to heat the impregnation liquid. A temperature sensor 4 is provided on the side of the inner wall of the impregnation tank 1. The electric heating tube and the temperature sensor 4 constitute a closed-loop temperature control system to heat the impregnation liquid and maintain it at the required process temperature of 50~60°C.

[0052] Other configurations and operations according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.

[0053] In this specification, the terms "embodiment," "example," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A magnetic powder core impregnation device characterized by: It includes an impregnation tank and a circulation pump. The impregnation tank is used to hold the impregnation solution. The impregnation tank is provided with a circulation inlet and a circulation outlet. The circulation inlet is located near the top of the impregnation tank, and the circulation outlet is located near the bottom of the impregnation tank. The circulation inlet is connected to the outlet of the circulation pump, and the circulation outlet is connected to the inlet of the circulation pump.

2. The magnetic powder core impregnation device according to claim 1, characterized by: Both the circulation inlet and the circulation outlet are located on the side of the immersion tank. The height 'a' of the circulation inlet is 60-80% of the height 'h' of the immersion tank. The circulation outlet is located at the lowest point on the side, and both the circulation inlet and the circulation outlet point towards the center of the immersion tank.

3. The magnetic powder core impregnation device according to claim 2, characterized in that: There are two circulation inlets and two circulation outlets. The two circulation inlets are positioned opposite each other on the side of the immersion tank, and the two circulation outlets are respectively located below the two circulation inlets.

4. The magnetic powder core impregnation device according to claim 3, characterized in that: The circulation pump is provided in two parts, and the circulation inlet and circulation outlet located on the same side are respectively connected to the outlet and inlet of the same circulation pump.

5. The magnetic powder core impregnation device according to claim 3, characterized in that: The water outlet of the circulation inlet is inclined downwards, and the angle θ with the horizontal plane is 0~60°.

6. The magnetic powder core impregnation device according to claim 1, characterized in that: The height b of the intersection point A of the two circulation inlets with their outflow directions is 30-50% of the height of the immersion tank.

7. The magnetic powder core impregnation device according to claim 1, characterized in that: It also includes a magnetic separator, which is installed in the pipe between the circulation outlet and the inlet of the circulation pump, and the bottom of the immersion tank has a conical structure that is high in the middle and low around the edges.

8. The magnetic powder core impregnation device according to claim 1, characterized in that: The circulating pump is a magnetically driven pump or a corrosion-resistant centrifugal pump.

9. The magnetic powder core impregnation device according to claim 1, characterized in that: It also includes a heating element disposed on the side or bottom of the inner wall of the immersion tank.

10. A magnetic powder core impregnation device according to claim 9, characterized in that: It also includes a temperature sensor and a temperature controller. The temperature sensor is disposed on the side or bottom of the inner wall of the immersion tank and is disposed away from the heating element. The temperature controller is electrically connected to the temperature sensor and the heating element respectively.

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