Electromagnetic drive type magnetic focusing one-way valve

Abstract

The electromagnetic drive type magnetic focusing one-way valve comprises a shell assembly, a permanent magnet set, an elastic suspension mechanism, a coil support and a silica gel plug, the shell assembly comprises an outer cover and a base, and the permanent magnet set comprises four permanent magnets evenly distributed on the edge of the top face of the outer cover in the circumferential direction and a magnetism gathering block arranged in the center of the top face of the outer cover. The elastic suspension mechanism comprises an upper spring and a lower spring; the coil support is suspended through an upper spring and a lower spring, a driving coil is wound on the coil support, and a through hollow hole is formed in the center of the coil support; the silica gel plug is fixed in the hollow hole, moves along with the coil support in the vertical direction, and seals the penetrating air channel when moving to the sealing position. A composite structure of the four-quadrant symmetric permanent magnet array and the center magnetism gathering module is adopted, a closed magnetic loop is formed through three-dimensional magnetic circuit optimization, the magnetic induction intensity is effectively improved, the magnetic leakage rate is reduced, directional gathering and efficient utilization of magnetic field energy are achieved, and the magnetic control precision of the valve is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of electronic valves, and more specifically, to an electromagnetically driven magnetic focusing check valve. Background Technology

[0002] In today's era of rapid technological advancement, various devices are showing a significant trend towards miniaturization. Behind this trend lies people's relentless pursuit and urgent need for device portability, integration, and high efficiency. However, like any development, miniaturization brings challenges, and it also presents a series of serious technical problems that urgently need to be solved.

[0003] In the extremely limited space of miniaturized devices, traditional magnetic circuit design concepts and permanent magnet layouts face unprecedented challenges, making it difficult to provide the necessary powerful magnetic thrust. The root cause lies in the fact that the constrained space severely restricts the number and size of the magnets. The inability to arbitrarily increase the number of magnets or freely expand their size directly weakens the foundation for magnetic field generation.

[0004] Meanwhile, the compactness of the space makes the magnetic field distribution exceptionally complex and unpredictable. The magnetic field can no longer be uniformly distributed as ideally, but is highly susceptible to interference from surrounding environmental factors and other internal components. This interference causes severe dispersion in the magnetic flux density, turning the originally concentrated and powerful magnetic field into a scattered one, and drastically weakening its strength. Ultimately, the drive coil in the single-way valve, a key component of the equipment, struggles to obtain sufficient driving force, severely impacting the normal operation and performance of the equipment. The equipment's operational stability is significantly reduced, and various performance indicators fail to meet expected standards, severely hindering further miniaturization of the equipment. Utility Model Content

[0005] In view of this, the present invention provides an electromagnetically driven magnetic focusing one-way valve, which adopts a composite structure of a four-quadrant symmetrical permanent magnet array and a central magnetic focusing module. Through three-dimensional magnetic circuit optimization, a closed magnetic loop is formed, which effectively improves the magnetic induction intensity, reduces the leakage magnetic rate, realizes the directional convergence and efficient utilization of magnetic field energy, and significantly improves the magnetic control accuracy of the valve.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] An electromagnetically driven magnetic focusing one-way valve includes a housing assembly, a permanent magnet assembly, an elastic suspension mechanism, a coil support, and a silicone plug. The housing assembly includes a detachably connected outer cover and a base. The top of the outer cover has an upper vent hole, and the bottom of the base has a lower vent hole. The upper and lower vent holes are coaxially arranged to form a through air passage. The permanent magnet assembly includes four permanent magnets circumferentially distributed along the edge of the top surface of the outer cover, and a magnetic focusing block located at the center of the top surface of the outer cover. The magnetic focusing block and the permanent magnets form a closed magnetic field. The circuit is used to focus the magnetic flux density; the elastic suspension mechanism includes an upper spring and a lower spring, which are fixed to the inner wall of the outer cover and the inner wall of the base, respectively; the coil support is suspended between the outer cover and the base by the upper spring and the lower spring, the coil support is wound with a drive coil, and has a through hole in its center; the silicone plug is fixed in the through hole, the silicone plug moves with the coil support in the vertical direction, and when it moves to the sealing position, it forms an interference fit with the port of the upper vent or the magnetic block or the lower vent to seal the through air passage.

[0008] A composite structure employing a four-quadrant symmetrical permanent magnet array and a central magnetic focusing module is used. Through three-dimensional magnetic circuit optimization, a closed magnetic loop is formed, effectively enhancing magnetic flux density and reducing magnetic leakage. This achieves directional convergence and efficient utilization of magnetic field energy, significantly improving the valve's magnetic control precision. In terms of structural design, four permanent magnets are precisely positioned circumferentially along the edge of the outer casing's top surface, combined with a specially designed magnetic focusing block at the center, forming a magnetic field coordination system based on spatial geometry principles. This layout not only fully considers the spatial distribution characteristics of the magnetic field but also achieves efficient integration of magnetic field energy through the closed magnetic circuit system constructed by the magnetic focusing block and permanent magnets. This closed magnetic circuit acts like a precise magnetic field control network, functioning as both a "collector" and an "amplifier," effectively constraining magnetic flux leakage and directionally converging dispersed magnetic field energy along a predetermined path, significantly improving the concentration and intensity of the magnetic field in key areas.

[0009] This magnetic field enhancement mechanism has dual value in improving the performance of the drive system: on the one hand, the strong directional magnetic field creates an ideal environment for the drive coil to efficiently cut magnetic field lines, generating a stable and powerful electromagnetic driving force based on the law of electromagnetic induction; on the other hand, the optimized magnetic field distribution enables the coil support to respond quickly to control signals, precisely driving the silicone plug to achieve millimeter-level displacement, ensuring reliable control of the air passage. Most importantly, under the space constraints brought about by device miniaturization, this design successfully overcomes the technical bottleneck of insufficient magnetic thrust in compact spaces through a geometric increase in magnetic field strength. This allows the electromagnetically driven magnetic focusing check valve to maintain its miniaturization advantages while also possessing high response speed and long-term operational stability. This innovation not only provides core technical support for microfluidic control devices but also opens up an innovative application paradigm for permanent magnets in microelectromechanical systems, possessing both theoretical breakthrough value and practical engineering significance.

[0010] Preferably, the magnetic focusing block is made of a soft magnetic material with high magnetic permeability, or is composed of an array of NdFeB permanent magnets. The choice of material for the magnetic focusing block provides design flexibility; the soft magnetic material version can reduce manufacturing costs and avoid magnetic field oversaturation, while the permanent magnet array version can generate a stronger directional magnetic field. Both implementations can achieve the goal of magnetic circuit optimization.

[0011] The magnetic focusing block can be constructed using materials selected according to different working conditions. When using soft magnetic materials, such as electrical pure iron or silicon steel sheets, the magnetic field guiding path can be optimized; when using a permanent magnet array, the local magnetic field strength can be enhanced. NdFeB permanent magnets possess extremely high magnetic properties, exhibiting significant characteristics such as high remanence, high coercivity, and high energy product. Assembling multiple NdFeB permanent magnets into a magnetic focusing block according to a specific arrangement and embedding this NdFeB permanent magnet array into the top surface of a metal shell offers several significant advantages. First, the excellent magnetic properties of NdFeB permanent magnets themselves provide a strong foundation for magnetic field generation, and the orderly arrangement of multiple permanent magnets can further superimpose and enhance the magnetic field effect. Second, by embedding it into the top surface of the metal shell, the shielding and guiding effect of the metal shell allows the magnetic field to be more concentrated in the desired area, achieving a magnetic field focusing effect. This magnetic field focusing can significantly increase the magnetic flux density, providing a stronger and more stable magnetic field environment for the interaction between the subsequent drive coil and the magnetic field. It helps to improve the driving efficiency and stability of the electromagnetically driven magnetic focusing one-way valve, effectively solving the problem of insufficient magnetic thrust in miniaturized space. This demonstrates the creativity and practicality of the design in improving product performance.

[0012] Preferably, the outer cover, four permanent magnets, magnetic block and upper spring are fixedly connected to form a stator assembly, and the base, lower spring, coil support and silicone plug are fixedly connected to form a rotor assembly. The stator assembly and rotor assembly are connected by a snap-fit ​​structure, and a first sealant is provided between the inner wall of the outer cover of the stator assembly and the outer wall of the base of the rotor assembly to form an airtight interface on the inner side after assembly.

[0013] The modular, split structure, dividing the electromagnetically driven magnetic focusing check valve into stator and rotor assemblies, offers numerous advantages. From a manufacturing perspective, this division allows for independent processing and production of each component, improving production efficiency and product quality consistency. Different components can be selected using the most suitable materials and manufacturing processes based on their respective functions and requirements, thereby optimizing the overall product performance. During assembly, the stator and rotor assemblies are connected via a snap-fit ​​structure. This snap-fit ​​structure is characterized by convenient installation and a secure connection, enabling quick and accurate assembly of the two components, reducing assembly time and difficulty. Furthermore, a first sealant is applied between the inner wall of the stator assembly's outer casing and the outer wall of the rotor assembly's base to form an airtight interface. This design effectively solves the airtightness problems that easily arise during multi-component assembly. In traditional multi-component assembly structures, numerous gaps between components allow gas to easily leak, leading to a decline in equipment performance. By setting the first sealant, a reliable airtight barrier can be formed inside to prevent gas from leaking from the inside, ensuring stable air pressure inside the electromagnetically driven magnetic focusing check valve, thereby ensuring its normal working performance. This demonstrates the innovation and effectiveness of the design in solving practical technical problems.

[0014] Preferably, a second sealant is provided between the inner wall of the stator assembly's outer casing and the outer wall of the rotor assembly's base to form an airtight interface on the outside after assembly.

[0015] The addition of a second sealant to form an external airtight interface further enhances the overall airtightness of the electromagnetically driven magnetic focusing check valve. In actual use environments, external factors such as humidity and pressure changes can affect the electromagnetically driven magnetic focusing check valve. The presence of the external airtight interface prevents external gases, moisture, and other substances from entering the valve, avoiding corrosion, short circuits, and other adverse effects on internal components, thus extending the equipment's service life. Simultaneously, it further eliminates the possibility of internal gas leakage to the external environment, ensuring stable and reliable operation of the electromagnetically driven magnetic focusing check valve under various working conditions. This improves the product's applicability and reliability, demonstrating the design's comprehensive consideration and innovation in perfecting product performance.

[0016] Preferably, the upper spring is connected to the outer cover via a snap-fit ​​structure.

[0017] The upper spring is connected to the outer cover using a snap-fit ​​structure, which offers several advantages. The snap-fit ​​design simplifies and speeds up the installation process, effectively improving work efficiency and reducing manual operation time and costs during the production assembly stage. Simultaneously, the snap-fit ​​connection provides excellent stability and reliability, firmly securing the upper spring to the outer cover and ensuring that it will not easily loosen or fall off during long-term use of the electromagnetically driven magnetic focusing check valve. This stability is crucial for maintaining the normal function of the elastic suspension mechanism, ensuring that the upper spring accurately provides the corresponding elastic support force when the coil support is subjected to external forces. This guarantees the stable and reliable operation of the entire electromagnetically driven magnetic focusing check valve, demonstrating the advantages of this connection method in ensuring product structural stability and performance. However, this snap-fit ​​structure is not mandatory; the upper spring can be connected to the outer cover using other methods.

[0018] Preferably, the base is embedded with a metal insert, and the lower spring is connected to the metal insert and the coil bracket by welding, and is electrically connected to the drive coil.

[0019] The lower spring is connected to both the base and the coil support via welding, offering unique advantages. Welding provides high connection strength; compared to other methods, the welded joint is more robust and can withstand greater external forces and vibrations. During the operation of the electromagnetically driven magnetic focusing check valve, the coil support moves frequently up and down under the influence of the magnetic field, requiring the lower spring to withstand significant tensile and impact forces. The welding connection ensures that the connection between the lower spring and the base and coil support remains stable even in this complex working environment, preventing loosening or separation. This guarantees the continuous and stable operation of the elastic suspension mechanism, providing reliable elastic support for the coil support, and ultimately ensuring the normal operation of the electromagnetically driven magnetic focusing check valve. This highlights the rationality and innovation of this connection method in adapting to the product's working environment and ensuring performance.

[0020] Preferably, the port of the upper vent, magnetic block, or lower vent is provided with an annular sealing surface, and the upper surface of the silicone plug has a matching planar structure, and the contact area between the planar structure and the annular sealing surface forms an airtight interface.

[0021] This sealing surface design is highly scientific and practical. The annular sealing surface at the upper vent, magnetic block, or lower vent port matches the surface of the silicone plug, achieving precise contact when the silicone plug moves to the sealing position. This contact effectively fills the gap between them, forming a good airtight interface. The presence of this airtight interface greatly improves the sealing effect of the electromagnetically driven magnetic focusing check valve on airflow. When it is necessary to close the through-passage, it can reliably prevent gas from passing through the vent, ensuring that the air passage is completely closed. Conversely, when it is necessary to open the air passage, it can smoothly achieve the venting function. This precise sealing design improves the accuracy and reliability of the electromagnetically driven magnetic focusing check valve in controlling airflow, meeting the stringent requirements of airflow control under different operating conditions, and demonstrating the innovation and uniqueness of this design in optimizing product functionality.

[0022] Preferably, after the drive coil is energized, it interacts with the magnetic field generated by the permanent magnet assembly, causing the drive coil support to move in the vertical direction, and controlling the opening and closing state of the through airway by the displacement of the silicone plug.

[0023] This driving method, based on the principle of electromagnetic induction, has significant advantages. When the drive coil is energized, it interacts with the magnetic field generated by the permanent magnet assembly, enabling precise control of the coil support's movement. The magnitude and direction of the electromagnetic force can be adjusted by controlling the magnitude and direction of the current, resulting in a high degree of controllability and precision in the coil support's movement. This precise control allows the silicone plug to be accurately moved to a predetermined position, achieving precise opening and closing control of the through-pass airway.

[0024] Preferably, the outer cover and the base are detachably connected by a snap-fit ​​structure.

[0025] The outer cover and base are detachably connected via a snap-fit ​​structure, greatly facilitating product use and maintenance. This snap-fit ​​structure allows for rapid installation and disassembly, enabling quick connection between the cover and base during equipment assembly and improving production efficiency. When the equipment requires repair, maintenance, or replacement of internal components, the cover and base can be easily separated, allowing operators to conveniently inspect, repair, and replace internal parts.

[0026] Preferably, the outer cover is made of a metal material.

[0027] Choosing metal materials for the outer casing offers several advantages. Metal materials typically possess high strength and hardness, providing reliable mechanical protection for the internal components of the electromagnetically driven magnetic focusing check valve. In practical use, the electromagnetically driven magnetic focusing check valve may be subjected to various external impacts and collisions. The metal casing effectively resists these forces, preventing damage to internal components and extending the product's lifespan. Furthermore, metal materials have excellent thermal conductivity, quickly dissipating the heat generated by the drive coil during operation. This prevents overheating due to heat accumulation, which could negatively impact performance and lifespan. Good heat dissipation helps maintain a stable internal temperature for the electromagnetically driven magnetic focusing check valve, ensuring stable and reliable operation even during prolonged continuous use. This demonstrates the rationality and superiority of this material selection in guaranteeing both the product's mechanical and thermal properties.

[0028] The advantages of this utility model compared to the prior art are:

[0029] This novel electromagnetically driven magnetic focusing one-way valve employs a composite structure of a four-quadrant symmetrical permanent magnet array and a central magnetic focusing module. Through three-dimensional magnetic circuit optimization, a closed magnetic loop is formed, effectively enhancing magnetic flux density and reducing magnetic leakage. This achieves directional convergence and efficient utilization of magnetic field energy, significantly improving the valve's magnetic control accuracy. In terms of structural design, four permanent magnets are precisely positioned circumferentially at the edge of the outer casing's top surface, combined with a specially designed magnetic focusing block at the center, forming a magnetic field synergy system based on spatial geometry principles. This layout not only fully considers the spatial distribution characteristics of the magnetic field but also achieves efficient integration of magnetic field energy through the closed magnetic circuit system constructed by the magnetic focusing block and permanent magnets. This closed magnetic circuit acts like a precise magnetic field control network, functioning as both a "collector" and an "amplifier," effectively constraining magnetic flux leakage and directionally converging dispersed magnetic field energy along a predetermined path, significantly improving the concentration and intensity of the magnetic field in key areas. This magnetic field enhancement mechanism has dual value in improving the performance of the drive system: on the one hand, the strong directional magnetic field creates an ideal environment for the drive coil to efficiently cut magnetic field lines, generating a stable and powerful electromagnetic driving force based on the law of electromagnetic induction; on the other hand, the optimized magnetic field distribution enables the coil support to respond quickly to control signals, precisely driving the silicone plug to achieve millimeter-level displacement, ensuring reliable control of the air passage. Most importantly, under the space constraints brought about by device miniaturization, this design successfully overcomes the technical bottleneck of insufficient magnetic thrust in compact spaces through a geometric increase in magnetic field strength. This allows the electromagnetically driven magnetic focusing check valve to maintain its miniaturization advantages while also possessing high response speed and long-term operational stability. This innovation not only provides core technical support for microfluidic control devices but also opens up an innovative application paradigm for permanent magnets in microelectromechanical systems, possessing both theoretical breakthrough value and practical engineering significance. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a three-dimensional structural diagram of an electromagnetically driven magnetic focusing one-way valve according to an embodiment of the present invention.

[0032] Figure 2 This is a cross-sectional view of an embodiment of the electromagnetically driven magnetic focusing check valve of this utility model.

[0033] Figure 3 This is a cross-sectional view of another aspect of an electromagnetically driven magnetic focusing one-way valve according to an embodiment of the present invention.

[0034] Figure 4 This is a structural diagram of a stator assembly according to an embodiment of the present invention.

[0035] Figure 5 This is an exploded view of a stator assembly according to an embodiment of the present invention.

[0036] Figure 6 This is an exploded view of a rotor assembly according to an embodiment of the present invention.

[0037] Labeling Explanation: 1 (Housing Assembly), 101 (Outer Cover), 102 (Base), 103 (Upper Vent), 104 (Lower Vent), 105 (Through Air Channel), 2 (Permanent Magnet Assembly), 201 (Permanent Magnet), 202 (Magnetic Block), 3 (Elastic Suspension Mechanism), 301 (Upper Spring), 302 (Lower Spring), 4 (Coil Support), 401 (Drive Coil), 402 (Knockout Hole), 5 (Silicone Plug), 6 (Stator Assembly), 7 (Rotor Assembly). Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0040] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the embodiments of this application, it should be understood that the terms "upper," "lower," "left," "right," "vertical," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product of this application is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this application 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 application.

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0042] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0043] This embodiment provides an electromagnetically driven magnetic focusing one-way valve, including a housing assembly 1, a permanent magnet assembly 2, an elastic suspension mechanism 3, a coil support 4, and a silicone plug 5. The housing assembly 1 includes a detachably connected outer cover 101 and a base 102. The top of the outer cover 101 has an upper vent hole 103, and the bottom of the base 102 has a lower vent hole 104. The upper vent hole 103 and the lower vent hole 104 are coaxially arranged and form a through air passage 105. The permanent magnet assembly 2 includes four permanent magnets 201 circumferentially distributed on the edge of the top surface of the outer cover 101, and a magnetic focusing block 202 located at the center of the top surface of the outer cover 101. The magnetic focusing block 202 and the permanent magnets 201 form a closed loop. The magnetic circuit is used to focus the magnetic flux density; the elastic suspension mechanism 3 includes an upper spring 301 and a lower spring 302, which are fixed to the inner wall of the outer cover 101 and the inner wall of the base 102, respectively; the coil support 4 is suspended between the outer cover 101 and the base 102 by the upper spring 301 and the lower spring 302, the coil support 4 is wound with a drive coil 401, and has a through hole 402 in its center; the silicone plug 5 is fixed in the through hole 402, and the silicone plug 5 moves with the coil support 4 in the vertical direction, and when it moves to the sealing position, it forms an interference fit with the port of the upper vent 103 or the magnetic block 202 or the lower vent 104 to seal the through air passage 105.

[0044] Through unique design and optimized spatial layout, this permanent magnet assembly 2 has successfully achieved a breakthrough improvement in magnetic field performance. Structurally, four permanent magnets 201 are precisely positioned circumferentially along the top edge of the outer casing 101, combined with a specially designed magnetic focusing block 202 at the center, forming a magnetic field synergy system based on spatial geometry principles. This layout not only fully considers the spatial distribution characteristics of the magnetic field but also achieves efficient integration of magnetic field energy through the closed magnetic circuit system constructed by the magnetic focusing block 202 and the permanent magnets 201. This closed magnetic circuit, like a precise magnetic field control network, functions as both a "collector" and an "amplifier," effectively constraining magnetic flux leakage and directing dispersed magnetic field energy along a predetermined path, significantly improving the concentration and intensity of the magnetic field in key areas.

[0045] This magnetic field enhancement mechanism has dual value in improving the performance of the drive system: on the one hand, the strong directional magnetic field creates an ideal environment for the drive coil 401 to efficiently cut magnetic field lines, generating a stable and powerful electromagnetic driving force based on the law of electromagnetic induction; on the other hand, the optimized magnetic field distribution enables the coil support 4 to respond quickly to control signals and precisely drive the silicone plug 5 to achieve millimeter-level displacement, ensuring reliable control of the through-flow air passage 105. More importantly, under the space constraints brought about by device miniaturization, this design successfully overcomes the technical bottleneck of insufficient magnetic thrust in a compact space through a geometric increase in magnetic field strength. This allows the electromagnetically driven magnetic focusing check valve to maintain its miniaturization advantages while also possessing high response speed and long-term operational stability. This innovation not only provides core technical support for microfluidic control devices but also opens up an innovative application paradigm for permanent magnets in microelectromechanical systems, possessing both theoretical breakthrough value and practical engineering significance.

[0046] In this embodiment, the magnetic focusing block 202 consists of multiple permanent magnets arranged in NdFeB, and its magnetic pole direction is complementary to that of the circumferential permanent magnet 201, thereby generating a superimposed magnetic field.

[0047] NdFeB permanent magnets possess extremely high magnetic properties, exhibiting significant characteristics such as high remanence, high coercivity, and high energy product. Arranging multiple NdFeB permanent magnets in a specific pattern to form a magnetic focusing block 202, and embedding this NdFeB permanent magnet array into the top surface of a metal casing, offers several outstanding advantages. First, the excellent magnetic properties of NdFeB permanent magnets themselves provide a strong foundation for magnetic field generation, and the orderly arrangement of multiple permanent magnets further superimposes and enhances the magnetic field effect. Second, by embedding them into the top surface of the metal casing, the shielding and guiding effect of the metal casing allows the magnetic field to be more concentrated in the desired area, achieving a magnetic field focusing effect. This magnetic field focusing significantly increases the magnetic flux density, providing a stronger and more stable magnetic field environment for the subsequent interaction between the drive coil 401 and the magnetic field. This helps improve the driving efficiency and stability of the electromagnetically driven magnetic focusing one-way valve, effectively solving the problem of insufficient magnetic thrust in miniaturized spaces, demonstrating the creativity and practicality of this design in improving product performance.

[0048] The magnetic concentrator can be constructed from materials selected according to different operating conditions. In alternative implementations, it can also be made of soft magnetic materials with high magnetic permeability. When using soft magnetic materials such as electrical pure iron, the magnetic concentrator can form a low magnetic reluctance path, guiding the magnetic field lines of the four permanent magnets 201 to converge towards the central region.

[0049] In this embodiment, the outer cover 101, four permanent magnets 201, magnetic block 202 and upper spring 301 are fixedly connected to form the stator assembly 6, and the base 102, lower spring 302, coil bracket 4 and silicone plug 5 are fixedly connected to form the rotor assembly 7. The stator assembly 6 and the rotor assembly 7 are connected by a snap-fit ​​structure, and a first sealant is provided between the inner wall of the outer cover 101 of the stator assembly 6 and the outer wall of the base 102 of the rotor assembly 7 to form an airtight interface on the inner side after assembly.

[0050] The modular, split structure, dividing the electromagnetically driven magnetic focusing check valve into a stator assembly 6 and a rotor assembly 7, offers numerous advantages. From a manufacturing perspective, this division allows for independent processing and production of each component, improving production efficiency and product quality consistency. Different components can be selected using the most suitable materials and manufacturing processes based on their respective functions and requirements, thereby optimizing the overall product performance. During assembly, the stator assembly 6 and rotor assembly 7 are connected via a snap-fit ​​structure. This snap-fit ​​structure is characterized by convenient installation and a secure connection, enabling quick and accurate assembly of the two components, reducing assembly time and difficulty. Furthermore, a first sealant is applied between the inner wall of the outer casing 101 of the stator assembly 6 and the outer wall of the base 102 of the rotor assembly 7 to form an airtight interface. This design effectively solves the airtightness problem that easily occurs during multi-component assembly. In traditional multi-component assembly structures, due to numerous gaps between components, gas easily leaks from these gaps, leading to a decrease in equipment performance. By setting the first sealant, a reliable airtight barrier can be formed inside to prevent gas from leaking from the inside, ensuring stable air pressure inside the electromagnetically driven magnetic focusing check valve, thereby ensuring its normal working performance. This demonstrates the innovation and effectiveness of the design in solving practical technical problems.

[0051] In this embodiment, a second sealant is provided between the inner wall of the outer cover 101 of the stator assembly 6 and the outer wall of the base 102 of the rotor assembly 7, for forming an airtight interface on the outside after assembly.

[0052] The addition of a second sealant to form an external airtight interface further enhances the overall airtightness of the electromagnetically driven magnetic focusing check valve. In actual use environments, external factors such as humidity and pressure changes can affect the electromagnetically driven magnetic focusing check valve. The presence of the external airtight interface prevents external gases, moisture, and other substances from entering the valve, avoiding corrosion, short circuits, and other adverse effects on internal components, thus extending the equipment's service life. Simultaneously, it further eliminates the possibility of internal gas leakage to the external environment, ensuring stable and reliable operation of the electromagnetically driven magnetic focusing check valve under various working conditions. This improves the product's applicability and reliability, demonstrating the design's comprehensive consideration and innovation in perfecting product performance.

[0053] In this embodiment, the upper spring 301 is connected to the outer cover 101 via a snap-fit ​​structure.

[0054] The upper spring 301 is connected to the outer cover 101 via a snap-fit ​​structure, offering several advantages. The snap-fit ​​design simplifies and speeds up the installation of the upper spring 301, effectively improving work efficiency and reducing manual operation time and costs during the production assembly stage. Simultaneously, the snap-fit ​​connection provides excellent stability and reliability, firmly securing the upper spring 301 to the outer cover 101, ensuring that it will not easily loosen or fall off during long-term use of the electromagnetically driven magnetic focusing check valve. This stability is crucial for maintaining the normal function of the elastic suspension mechanism 3, ensuring that the upper spring 301 accurately provides the corresponding elastic support force when the coil support 4 is subjected to external forces. This ensures the stable and reliable operation of the entire electromagnetically driven magnetic focusing check valve, demonstrating the advantages of this connection method in guaranteeing product structural stability and performance. However, this snap-fit ​​structure is not mandatory; the upper spring can be connected to the outer cover in other ways.

[0055] In this embodiment, the base 102 is embedded with a metal insert, and the lower spring 302 is connected to the metal insert and the coil bracket 4 by welding, and is electrically connected to the drive coil 401.

[0056] The lower spring 302 is connected to the base 102 and the coil support 4 by welding, which has unique advantages. Welding provides high connection strength; compared to other connection methods, the welded connection point is more robust and can withstand greater external forces and vibrations. During the operation of the electromagnetically driven magnetic focusing check valve, the coil support 4 moves frequently up and down under the influence of magnetic force, requiring the lower spring 302 to withstand significant tensile and impact forces. The welding connection ensures that the connection between the lower spring 302 and the base 102 and the coil support 4 remains stable under this complex working environment, preventing loosening or separation. This ensures the continuous and stable operation of the elastic suspension mechanism 3, providing reliable elastic support for the coil support 4, and thus guaranteeing the normal operation of the electromagnetically driven magnetic focusing check valve. This highlights the rationality and innovation of this connection method in adapting to the product's working environment and ensuring performance.

[0057] In this embodiment, the port of the upper vent 103, the magnetic block 202, or the lower vent 104 is provided with an annular sealing surface, and the upper surface of the silicone plug 5 has a matching planar structure. The contact area between the planar structure and the annular sealing surface forms an airtight interface.

[0058] This sealing surface design is highly scientific and practical. The annular sealing surface at the upper vent 103, magnetic block 202, or lower vent 104 port matches the upper surface of the silicone plug 5, achieving precise contact when the silicone plug 5 moves to the sealing position. This contact effectively fills the gap between them, forming a good airtight interface. The presence of this airtight interface greatly improves the sealing effect of the electromagnetically driven magnetic focusing check valve on airflow. When it is necessary to close the through air passage 105, it can reliably prevent gas from passing through the vent, ensuring that the air passage is completely closed. Conversely, when it is necessary to open the air passage, it can smoothly achieve the ventilation function. This precise sealing design improves the accuracy and reliability of the electromagnetically driven magnetic focusing check valve in controlling airflow, meeting the stringent requirements for airflow control under different operating conditions, and demonstrating the innovation and uniqueness of this design in optimizing product functionality.

[0059] In this embodiment, after the drive coil 401 is energized, it interacts with the magnetic field generated by the permanent magnet assembly 2, causing the drive coil support 4 to move in the vertical direction, and controlling the opening and closing state of the through airway 105 by the displacement of the silicone plug 5.

[0060] This driving method, based on the principle of electromagnetic induction, has significant advantages. When the driving coil 401 is energized, it interacts with the magnetic field generated by the permanent magnet assembly 2, enabling precise control of the movement of the coil support 4. The magnitude and direction of the electromagnetic force can be adjusted by controlling the magnitude and direction of the current, making the movement of the coil support 4 highly controllable and precise. Through this precise control, the silicone plug 5 can be accurately moved to a predetermined position, achieving precise opening and closing control of the through-pass airway 105.

[0061] In this embodiment, the outer cover 101 and the base 102 are detachably connected by a snap-fit ​​structure.

[0062] The outer cover 101 and the base 102 are detachably connected by a snap-fit ​​structure, greatly facilitating the use and maintenance of the product. The snap-fit ​​structure allows for rapid installation and disassembly, enabling quick connection of the outer cover 101 and base 102 during equipment assembly, thus improving production efficiency. When the equipment requires repair, maintenance, or replacement of internal components, the outer cover 101 can be easily separated from the base 102, facilitating operator inspection, repair, and replacement of internal parts.

[0063] In this embodiment, the outer cover 101 is made of metal.

[0064] Choosing metal for the outer casing 101 offers several advantages. Metal materials typically possess high strength and hardness, providing reliable mechanical protection for the internal components of the electromagnetically driven magnetic focusing check valve. In practical use, the electromagnetically driven magnetic focusing check valve may be subjected to various external impacts and collisions. The metal casing 101 effectively resists these forces, preventing damage to internal components and extending the product's lifespan. Furthermore, metal materials have excellent thermal conductivity, quickly dissipating the heat generated by the drive coil 401 during operation. This prevents overheating due to heat accumulation, which could negatively impact performance and lifespan. This superior heat dissipation helps maintain a stable internal temperature for the electromagnetically driven magnetic focusing check valve, ensuring stable and reliable operation even during prolonged continuous use. This demonstrates the rationality and superiority of this material selection in guaranteeing both the product's mechanical and thermal properties.

[0065] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

Claims

1. An electromagnetically driven magnetic focusing check valve, characterized in that, include The housing assembly (1) includes a detachably connected outer cover (101) and a base (102). The top of the outer cover (101) is provided with an upper vent (103), and the bottom of the base (102) is provided with a lower vent (104). The upper vent (103) and the lower vent (104) are coaxially arranged to form a through air passage (105). The permanent magnet assembly (2) includes four permanent magnets (201) evenly distributed around the edge of the top surface of the outer cover (101) and a magnetic focusing block (202) located at the center of the top surface of the outer cover (101). The magnetic focusing block (202) and the permanent magnets (201) form a closed magnetic circuit for focusing magnetic flux density. The elastic suspension mechanism (3) includes an upper spring (301) and a lower spring (302), which are respectively fixed to the inner wall of the outer cover (101) and the inner wall of the base (102); The coil support (4) is suspended between the outer cover (101) and the base (102) by the upper spring (301) and the lower spring (302). The coil support (4) is wound with a drive coil (401) and has a through hole (402) in its center. The silicone plug (5) is fixed in the hollow hole (402). The silicone plug (5) moves vertically with the coil bracket (4) and forms an interference fit with the port of the upper vent (103), the magnetic block (202), or the lower vent (104) when it moves to the sealing position, so as to seal the through air passage (105).

2. The electromagnetically driven magnetic focusing check valve according to claim 1, characterized in that, The magnetic block (202) is made of a soft magnetic material with high magnetic permeability, or is composed of an array of NdFeB permanent magnets.

3. The electromagnetically driven magnetic focusing check valve according to claim 1, characterized in that, The outer cover (101), four permanent magnets (201), magnetic block (202) and upper spring (301) are fixedly connected to form a stator assembly (6). The base (102), lower spring (302), coil bracket (4) and silicone plug (5) are fixedly connected to form a rotor assembly (7). The stator assembly (6) and rotor assembly (7) are connected by a snap-fit ​​structure. A first sealant is provided between the inner wall of the outer cover (101) of the stator assembly (6) and the outer wall of the base (102) of the rotor assembly (7) to form an airtight interface on the inner side after assembly.

4. The electromagnetically driven magnetic focusing check valve according to claim 3, characterized in that, A second sealant is provided between the inner wall of the outer casing (101) of the stator assembly (6) and the outer wall of the base (102) of the rotor assembly (7) to form an airtight interface on the outside after assembly.

5. The electromagnetically driven magnetic focusing check valve according to claim 1, characterized in that, The base (102) is embedded with a metal insert, and the lower spring (302) is connected to the metal insert and the coil bracket (4) respectively by welding, and is electrically connected to the drive coil.

6. The electromagnetically driven magnetic focusing check valve according to claim 1, characterized in that, The port of the upper vent (103) or magnetic block (202) or lower vent (104) is provided with an annular sealing surface, and the upper surface of the silicone plug (5) has a matching planar structure, and the contact area between the planar structure and the annular sealing surface forms an airtight interface.

7. The electromagnetically driven magnetic focusing check valve according to claim 1, characterized in that, After the drive coil (401) is energized, it interacts with the magnetic field generated by the permanent magnet assembly (2), and the drive coil support (4) moves in the vertical direction. The opening and closing state of the through airway (105) is controlled by the displacement of the silicone plug (5).

8. The electromagnetically driven magnetic focusing check valve according to claim 1, characterized in that, The outer cover (101) and the base (102) are detachably connected.

9. The electromagnetically driven magnetic focusing check valve according to claim 1, characterized in that, The outer cover (101) is made of metal.

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