Halbach type single-side magnetic field direction shielding type powerful magnet

Abstract

The utility model relates to the technical field of Halbach shells, in particular to a Halbach type unilateral magnetic field direction shielding type powerful magnet which comprises a magnetic group and a plate body, the magnetic group comprises a first magnet, a second magnet and a third magnet, the second magnet and the third magnet are arranged on the first magnet, and the second magnet and the third magnet are respectively located on two sides of the first magnet. The plate body is made of a magnetic isolation material, the magnetic group is arranged on the plate body and used for shielding a magnetic field on one side of the magnetic group, the magnetic group adopts a Haier shell array, the magnetic field intensity of a single side is enhanced through the magnet layout of the Haier shell array, and the magnetic field of a non-target area is effectively shielded by combining the plate body made of the magnetic isolation material and the magnetic conductive coating. And the magnetic field lines are guided to be concentrated in the target direction, so that the utilization efficiency of the magnetic field is improved, the strength and concentration ratio of the magnetic field in the target direction are remarkably improved, and higher efficiency and performance can be realized in applications needing a high-intensity magnetic field.

Description

Technical Field

[0001] The utility model relates to the technical field of Haier shell, and in particular discloses a Halbach-type unilateral magnetic field direction shielding type strong magnet. Background Art

[0002] Magnets are widely used in high-energy physics, industrial equipment (such as nuclear magnetic resonance, magnetic levitation, permanent magnet special motors, etc.) and daily life. In these applications, the magnetic field distribution of traditional magnets is relatively uniform, without obvious unilateral enhancement or weakening effect. The intensity and direction of the magnetic field are relatively consistent on the entire surface of the magnet, which to a certain extent limits its use in applications that require a unilateral magnetic field. Content of the Utility Model

[0003] In order to overcome the disadvantages and deficiencies existing in the prior art, the purpose of the utility model is to provide a Halbach-type unilateral magnetic field direction shielding type strong magnet.

[0004] To achieve the above purpose, a Halbach-type unilateral magnetic field direction shielding type strong magnet of the utility model includes a magnetic group and a plate body. The magnetic group includes a first magnet, a second magnet and a third magnet arranged on the first magnet. The second magnet and the third magnet are respectively located on both sides of the first magnet. The plate body is made of a magnetic isolation material. The magnetic group is arranged on the plate body to shield the magnetic field on one side of the magnetic group. Through the Halbach arrangement of the first magnet, the second magnet and the third magnet, an enhanced unilateral magnetic field can be formed on one side of the magnetic group, and this enhancement effect helps to improve the efficiency in applications that require a high-intensity magnetic field.

[0005] Furthermore, the magnetic group is arranged in a Halbach pattern, which can generate a strong unilateral magnetic field. The unilateral magnetic field enhances the magnetic force on one side, significantly improving the intensity and concentration of the magnetic field in the target direction, and helping to achieve higher efficiency and performance in applications that require a strong magnetic field. The magnetic field on the non-target side of the magnetic group is shielded, and the magnetic field is effectively weakened on the non-target side of the magnetic group, greatly reducing the interference of the magnetic field to the non-target area and the equipment therein, ensuring the stable operation of the equipment and the purity of the environment. The plate body in the plate body is made of a magnetic isolation material, and this material can effectively isolate the magnetic field generated by the magnetic group from leaking into the external space, not only protecting the surrounding environment from magnetic field interference, but also ensuring the concentrated utilization of the magnetic field and improving the overall performance.

[0006] Furthermore, the second magnet and the third magnet have opposite magnetic pole orientations. The magnetic pole orientation of the first magnet is perpendicular to that of the second magnet / third magnet. The opposite magnetic pole orientations of the second magnet and the third magnet result in an enhanced unilateral magnetic field formed by their interaction with the first magnet. This can cause the magnetic field lines to converge on the target side, thereby enhancing the magnetic field strength on that side. The perpendicular magnetic pole orientation of the first magnet with respect to the second and third magnets helps reduce the leakage of the magnetic field in the vertical direction, making the magnetic field more concentratedly distributed on the target plane. By adding the fourth magnet with a magnetic pole orientation opposite to that of the first magnet, the magnetic field strength of the magnetic group in a specific direction can be further enhanced, causing the magnetic field lines to be more concentrated on the target side and forming a stronger unilateral magnetic field. The fourth magnet can further focus the magnetic field, reduce the diffusion of the magnetic field in non-target areas, and improve the utilization efficiency of the magnetic field.

[0007] Furthermore, the plate body also includes a coating made of a magnetic conductive material. The coating is provided on the side of the plate body away from the magnetic group. The magnetic conductive material has good magnetic conductivity and can guide the direction of the magnetic field lines. Therefore, the coating can act as a "guide" for the magnetic field lines, guiding the magnetic field lines generated by the magnetic group towards the strong magnetic surface and enhancing the magnetic field strength on that side. The coating is located on the side of the plate body away from the magnetic group and can shield the magnetic field in non-target areas to a certain extent, which helps reduce the interference of the magnetic field on the surrounding environment and improve the electromagnetic compatibility of the outside world.

[0008] Furthermore, the plate body is made of a magnetic isolation material. The magnetic isolation material is made of iron, nickel, cobalt, or their compounds to magnetically isolate the magnetic group in the plate body. Metals such as iron, nickel, and cobalt are ferromagnetic substances. When an external magnetic field acts on them, a reverse magnetic field will be induced. In the plate body, these magnetic isolation materials can effectively guide the direction of the magnetic field generated by the magnetic group, thereby guiding the magnetic field of the magnetic group on the non-required magnetic field surface to the required side to a great extent and achieving efficient magnetic field isolation.

[0009] Furthermore, the magnetic isolation material is low-carbon steel or permalloy. The cost of low-carbon steel is relatively low because its material cost is low and it is easy to process. This makes it possible to significantly reduce the overall cost when a large amount of magnetic isolation material is needed. Low-carbon steel has good plasticity and ductility and is suitable for various cold working operations such as cold pressing, cold heading, and cold bending. At the same time, its hardness is relatively low and it is easy to process and form, suitable for machining operations such as cutting, drilling, and milling. These advantages make low-carbon steel more flexible and efficient in manufacturing magnetic isolation components. Permalloy has a very high magnetic permeability in a weak magnetic field environment, which enables permalloy to effectively isolate the interference of the external magnetic field on the internal magnetic field in a weak magnetic field environment and improve the electromagnetic compatibility of the equipment.

[0010] Furthermore, the thickness of the coating is 0.05 - 0.10 mm. Within this thickness range, the coating can effectively isolate corrosive media in the external environment, such as moisture, oxygen, chemicals, etc., thereby protecting the substrate material from corrosion and providing better corrosion resistance because it can more effectively block the penetration of corrosive media.

[0011] Furthermore, the magnetic group is arranged on the plate body via an external connecting piece. The magnetic group is connected to the plate body through the external connecting piece, which can realize the modular design of the magnetic group. When the magnetic group needs to be replaced or repaired, the external connecting piece can be rotated for easy disassembly and installation without large-scale disassembly of the entire device, thus improving the convenience and efficiency of maintenance.

[0012] Furthermore, extension parts are bent and extended on the plate body. There are two extension parts, and the two extension parts are located on both sides of the length direction of the magnetic group to clamp the magnetic group. The design of the extension parts provides additional support points for the magnetic group, enabling the magnetic group to be more firmly fixed on the plate body when subjected to external forces. This stable clamping method helps to reduce the shaking and displacement of the magnetic group during operation, thereby improving the overall structural strength and stability. By clamping both sides of the magnetic group with two extension parts, it can effectively prevent the magnetic group from falling off or loosening during long-term use or in harsh environments, ensuring the long-term stability and reliability of the magnetic group.

[0013] Furthermore, the plate body is integrally injection-molded. Integral injection molding can ensure the tight connection and seamless gap between components, improving the integrity and stability of the entire structure. This makes the plate body less likely to have component separation or loosening during use, enhancing its reliability and durability, avoiding material differences and bonding strength problems at the connection parts, thereby improving the overall mechanical properties and enabling it to better withstand various external forces and environmental conditions.

[0014] The beneficial effects of the present utility model: By arranging magnets in the shape of Haier shells to enhance the magnetic field strength on one side, combined with a plate body made of magnetic shielding material and a magnetic conductive coating, it not only effectively shields the magnetic field in non-target areas but also guides the magnetic field lines to concentrate in the target direction, improving the magnetic field utilization efficiency. At the same time, the integrally injection-molded plate body is connected to the modular-designed magnetic group, ensuring the stability of the structure and convenient maintenance. The addition of the extension parts further enhances the overall stability, improves the magnetic field of the magnet and the efficiency and performance in magnet applications, while reducing the manufacturing cost, demonstrating a high degree of technological integration and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is one of the schematic diagrams of the main structure of the present utility model;

[0016] Figure 2 is the other schematic diagram of the main structure of the present utility model;

[0017] Figure 3 One of the schematic diagrams of the magnetic group structure of the present utility model;

[0018] Figure 4 Two of the schematic diagrams of the magnetic group structure of the present utility model.

[0019] The reference numerals include:

[0020] 1, magnetic group; 6, plate body; 7, coating; 11, first magnet; 12, second magnet; 13, third magnet;

[0021] 14, fourth magnet. Specific embodiments

[0022] For the convenience of those skilled in the art, the present utility model will be further described below in conjunction with embodiments and the accompanying drawings. The content mentioned in the embodiments does not limit the present utility model.

[0023] Please refer to Figures 1 to 4 As shown, a Halbach-type unilateral magnetic field direction shielding type strong magnet of the present utility model includes a magnetic group and a plate body 6. The magnetic group 1 includes a first magnet 11, a second magnet 12 and a third magnet 13 arranged on the first magnet 11. The second magnet 12 and the third magnet 13 are respectively located on both sides of the first magnet 11. The plate body 6 is made of a magnetic shielding material. The magnetic group 1 is arranged on the plate body 6 to shield the magnetic field on one side of the magnetic group 1. Through the Halbach arrangement of the first magnet 11, the second magnet 12 and the third magnet, an enhanced unilateral magnetic field can be formed on one side of the magnetic group 1. This enhancement effect helps to improve the efficiency in applications that require a high-intensity magnetic field.

[0024] Specifically, the Halbach arrangement of the magnetic group can generate a strong unilateral magnetic field. The unilateral magnetic field enhances the magnetic force on one side, significantly improving the intensity and concentration of the magnetic field in the target direction, which helps to achieve higher efficiency and performance in applications that require a strong magnetic field. The magnetic field in the non-target area is shielded. On the non-target side of the magnetic group 1, the magnetic field is effectively weakened, greatly reducing the interference of the magnetic field on the non-target area and the equipment therein, ensuring the stable operation of the equipment and the purity of the environment. The plate body 6 is made of a magnetic shielding material, which can effectively isolate the magnetic field generated by the magnetic group 1 from leaking into the external space. This not only protects the surrounding environment from magnetic field interference but also ensures the concentrated utilization of the magnetic field, improving the overall performance.

[0025] Specifically, the second magnet 12 and the third magnet 13 have opposite magnetic pole orientations. The magnetic pole orientation of the first magnet 11 is perpendicular to the magnetic pole orientations of the second magnet 12 and the third magnet 13. The second magnet 12 and the third magnet 13 have opposite magnetic pole orientations. The interaction between them and the first magnet 11 will form an enhanced unilateral magnetic field, which can cause the magnetic field lines to converge on the target side, thereby enhancing the magnetic field strength on that side. The magnetic pole orientation of the first magnet 11 is perpendicular to the magnetic pole orientations of the second magnet 12 and the third magnet 13, which helps to reduce the leakage of the magnetic field in the vertical direction and makes the magnetic field more concentratedly distributed on the target plane. By adding the fourth magnet 14 with a magnetic pole orientation opposite to that of the first magnet 11, the magnetic field strength of the magnetic group 1 in a specific direction can be further enhanced, causing the magnetic field lines to be more concentrated on the target side and forming a stronger unilateral magnetic field. The fourth magnet 14 can further focus the magnetic field, reduce the diffusion of the magnetic field in the non-target area, and improve the utilization efficiency of the magnetic field.

[0026] Specifically, the plate body 6 further includes a coating layer 7 made of a magnetic conductive material. The coating layer 7 is disposed on the side of the plate body 6 away from the magnetic group 1. The magnetic conductive material has good magnetic conductivity and can guide the direction of the magnetic field lines. Therefore, the coating layer 7 can act as a "guide" for the magnetic field lines, guiding the magnetic field lines generated by the magnetic group 1 towards the strong magnetic surface and enhancing the magnetic field strength on that side. The coating layer 7 is located on the side of the plate body 6 away from the magnetic group 1 and can shield the magnetic field in the non-target area to a certain extent, which helps to reduce the interference of the magnetic field on the surrounding environment and improve the electromagnetic compatibility of the outside world.

[0027] Specifically, the plate body 6 is made of a magnetic isolation material. The magnetic isolation material is made of iron, nickel, cobalt or their compounds to magnetically isolate the magnetic group 1 from iron, nickel, cobalt and other metal elements. These metal elements belong to ferromagnetic substances. When an external magnetic field acts on them, a reverse magnetic field will be induced. In the plate body 6, these magnetic isolation materials can effectively guide the direction of the magnetic field generated by the magnetic group, thereby guiding the magnetic field of the magnetic group on the side where the magnetic field is not needed to the side where it is needed to a great extent, achieving efficient magnetic field isolation.

[0028] Specifically, in this embodiment, the essence of magnetic field isolation is guidance, and magnetic isolation is only for the convenience of description.

[0029] Specifically, the magnetic shielding material is low-carbon steel or permalloy. The cost of carbon steel is relatively low because its material cost is low and it is easy to process. This makes it possible to significantly reduce the overall cost when a large amount of magnetic shielding material is required. Low-carbon steel has good plasticity and ductility, suitable for various cold working operations such as cold pressing, cold heading, and cold bending. At the same time, its hardness is relatively low, making it easy to process and form, suitable for machining operations such as cutting, drilling, and milling. These advantages make low-carbon steel more flexible and efficient in manufacturing magnetic shielding components. Permalloy has a very high magnetic permeability in weak magnetic fields, which enables permalloy to effectively isolate the interference of external magnetic fields on internal magnetic fields in a weak magnetic field environment, improving the electromagnetic compatibility of the equipment.

[0030] Specifically, the thickness of the coating 7 is 0.05 - 0.10 mm. Within this thickness range, the coating can effectively isolate corrosive media in the external environment, such as moisture, oxygen, chemical substances, etc., thereby protecting the base material from corrosion and providing better corrosion resistance because it can more effectively block the penetration of corrosive media.

[0031] Specifically, the magnetic assembly 1 is arranged on the plate body 6 via an external connecting piece. The magnetic assembly 1 is connected to the plate body through the external connecting piece, which can realize the modular design of the magnetic assembly 1. When the magnetic assembly 1 needs to be replaced or repaired, it can be easily disassembled and installed by rotating the external connecting piece, without the need to carry out large-scale disassembly of the entire equipment, thereby improving the convenience and efficiency of maintenance.

[0032] Specifically, a cut angle is provided on the plate body 6. The cut angle is located on one side of the upper end of the plate body 6 close to the magnetic assembly 1. The cut angle is used to guide the magnetic assembly 1 into the plate body 6 to ensure that the magnetic assembly 1 can smoothly and accurately enter the preset position of the plate body 6.

[0033] Specifically, a groove is provided on the plate body 6. The groove cooperates with an external bolt for precise installation and positioning.

[0034] Specifically, the edge of the plate body 6 is provided with a rounded corner treatment to reduce physical damage caused by sharp edges, reduce stress concentration, and improve the overall aesthetic appearance.

[0035] Specifically, an anti-corrosion coating is also applied to the side of the coating 7 away from the magnetic assembly 1 to enhance the corrosion resistance and durability of the coating.

[0036] Specifically, the anti-corrosion coating is made of epoxy resin and polyurethane materials.

[0037] Specifically, a shock-absorbing pad 5 is provided between the magnetic assembly 1 and the plate body 6. The shock-absorbing pad 5 is made of an elastic material, such as rubber or silicone, to reduce the impact of vibrations generated by the magnetic assembly 1 during operation on the plate body 6 and external equipment.

[0038] Specifically, the plate body 6 is bent and extended with extension parts. There are two extension parts. The two extension parts are located on both sides of the magnetic group 1 in the length direction to clamp the magnetic group 1. The design of the extension parts provides additional support points for the magnetic group 1, enabling the magnetic group 1 to be more firmly fixed on the plate body 6 when subjected to external forces. This stable clamping method helps to reduce the shaking and displacement of the magnetic group 1 during operation, thereby improving the overall structural strength and stability. By clamping both sides of the magnetic group 1 with two extension parts, it can effectively prevent the magnetic group 1 from falling off or loosening during long-term use or in harsh environments, ensuring the long-term stability and reliability of the magnetic group 1.

[0039] Specifically, the plate body 6 is integrally injection molded. Integral injection molding can ensure that the connection between components is tight and seamless, improving the integrity and stability of the entire structure. This makes the plate body 6 less likely to experience component separation or loosening during use, enhancing its reliability and durability, avoiding material differences and bonding strength problems at the connection parts, thereby improving the overall mechanical properties and enabling it to better withstand various external forces and environmental conditions.

[0040] The above content is only the preferred embodiment of the present utility model. For those of ordinary skill in the art, based on the idea of the present utility model, there will be changes in the specific implementation manners and application scopes. The content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A Halbach array single-sided magnetic field direction shielding type powerful magnet, comprising a magnetic group (1) and a plate body (6) used in cooperation with the magnetic group (1). The magnetic group (1) includes a first magnet (11), a second magnet (12) and a third magnet (13) arranged on the first magnet (11). The second magnet (12) and the third magnet (13) are respectively located on both sides of the first magnet (11); it is characterized in that: The plate body (6) is made of a magnetic shielding material, and the magnetic assembly (1) is arranged on the plate body (6). The plate body (6) is used to shield the magnetic field on one side of the magnetic assembly (1).

2. The Halbach array unilateral magnetic field direction shielding type high-strength magnet according to claim 1, wherein: The magnetic poles of the second magnet (12) and the third magnet (13) face in opposite directions, and the magnetic pole orientation of the first magnet (11) is perpendicular to the magnetic pole orientations of the second magnet (12) / third magnet (13).

3. The Halbach array single-sided magnetic field direction shielding type strong magnet according to claim 2, characterized in that: The magnetic assembly (1) further includes a fourth magnet (14). The fourth magnet (14) is located on the side of the third magnet (13) / second magnet (12) away from the first magnet (11), and the magnetic pole orientations of the first magnet (11) and the fourth magnet (14) are opposite.

4. A Halbach array single-sided magnetic field direction shielding type strong magnet according to claim 1, wherein: The plate body (6) further includes a coating layer (7) made of a magnetic conductive material, and the coating layer (7) is arranged on the side of the plate body (6) away from the magnetic assembly (1).

5. A Halbach array single-sided magnetic field direction shielding type high-strength magnet according to claim 1, characterized in that: The plate body (6) is made of a magnetic shielding material, and the magnetic shielding material is made of iron, nickel, cobalt or their compounds to magnetically isolate the plate body (6) from the magnetic assembly (1).

6. A Halbach array single-sided magnetic field direction shielding type strong magnet according to claim 5, characterized in that: The magnetic shielding material is low-carbon steel or permalloy.

7. A Halbach array single-sided magnetic field direction shielding type strong magnet according to claim 4, characterized in that: The thickness of the coating layer (7) is 0.05 - 0.10 mm.

8. A Halbach array single-sided magnetic field direction shielding type high-strength magnet according to claim 1, characterized in that: The magnetic assembly (1) is arranged on the plate body (6) through an external connecting piece.

9. A Halbach array unilateral magnetic field direction shielding type powerful magnet according to claim 1, characterized in that: An extension part is bent and extended on the plate body (6). There are two extension parts, and the two extension parts are located on both sides of the magnetic assembly (1) in the length direction to clamp the magnetic assembly (1).

10. A Halbach array single-sided magnetic field direction shielding type strong magnet according to claim 1, characterized in that: The plate body (6) is formed by integral injection molding.

Images