Electromagnetic valve

Abstract

The utility model relates to the technical field of electromagnetic valves, and discloses an electromagnetic valve which comprises a valve body assembly, an iron core and a magnet assembly. The valve body assembly is provided with a communicating cavity. The iron core is movably arranged in the conduction cavity; the magnet assembly is movably arranged in the conduction cavity and comprises a first magnet and a second magnet. Limiting structures are coaxially arranged at the two opposite ends of the iron core respectively, and the first magnet and the second magnet are connected to the two opposite ends, in the axis direction of the valve body assembly, of the iron core through the limiting structures respectively. According to the electromagnetic valve, the problem of clamping stagnation of the electromagnetic valve in the working process due to the fact that the first magnet, the iron core and the second magnet are not concentric is solved; moreover, the two opposite ends of the iron core are coaxially provided with the limiting structures respectively, so that the first magnet and the second magnet are more easily connected to the two opposite ends of the iron core respectively, and the assembly efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic valve technology, and in particular to an electromagnetic valve. Background Technology

[0002] When a solenoid valve is energized, current flows through the coil, generating a magnetic force that attracts the valve core, causing it to move and opening the valve to allow fluid to pass through. When the power is off, the magnetic force disappears, the valve core returns to its original position under the action of the spring, the valve closes, and fluid flow stops. This on / off control can be achieved through electrical signals, thus solenoid valves offer fast, accurate, and reliable control characteristics, leading to their widespread use.

[0003] Solenoid valves typically consist of a magnet assembly, an iron core, and a valve body. The valve body has a cavity for housing the magnet assembly and the iron core. The magnetic assembly includes a first magnet and a second magnet, and the iron core is located between the first magnet and the second magnet. In existing technology, misalignment between the first magnet, the iron core, and the second magnet can easily cause the solenoid valve to jam during operation, thus affecting its normal use. Utility Model Content

[0004] To address the shortcomings of the prior art, this utility model provides a solenoid valve that avoids the problem of jamming during operation caused by the misalignment between the first magnet, the iron core, and the second magnet. Furthermore, since the iron core has coaxial limiting structures at its two ends, it is easier to connect the first magnet and the second magnet to the two ends of the iron core, thereby improving assembly efficiency.

[0005] The technical effect to be achieved by this utility model is realized through the following technical solution:

[0006] This utility model provides a solenoid valve, comprising:

[0007] The valve body assembly has a through cavity;

[0008] The iron core is movably disposed within the conductive cavity; and

[0009] A magnet assembly is movably disposed within the conductive cavity, the magnet assembly comprising a first magnet and a second magnet;

[0010] The iron core has a limiting structure coaxially provided at its two ends, and the first magnet and the second magnet are respectively connected to the iron core at their two ends in the axial direction of the valve body assembly through the limiting structure.

[0011] In some implementations, the limiting structure includes a first snap-fit ​​structure disposed at the end of the iron core, and the first magnet and / or the second magnet is provided with a second snap-fit ​​structure that cooperates with the first snap-fit ​​structure to prevent displacement of the first magnet and / or the second magnet.

[0012] In this implementation, the first snap-fit ​​structure is disposed at opposite ends of the iron core, and the second snap-fit ​​structure is disposed at the end of the first magnet and / or the second magnet close to the iron core. The second snap-fit ​​structure snaps into the first snap-fit ​​structure so that the first magnet and / or the second magnet snaps into the iron core, thereby improving the connection stability between the first magnet, the iron core and the second magnet.

[0013] In some implementations, the first snap-fit ​​structure includes a limiting countersink at the end of the iron core, and the second snap-fit ​​structure includes an abutment portion at the end of the first magnet and / or the second magnet.

[0014] In some implementations, the solenoid valve further includes a magnetic component, and the valve body assembly also has an air inlet and an air outlet, which are respectively located at opposite ends of the conductive cavity, and the magnetic component is located at the end of the air inlet away from the conductive cavity.

[0015] In this implementation, an external coil is energized to generate magnetic force in the magnetic component, which in turn attracts the magnetic component to the magnet assembly. Since the magnetic component is fixed at the end of the air inlet away from the conductive cavity, when energized, the magnet assembly is attracted by the magnetic component, thereby blocking the air inlet. When the power is cut off, the magnetic force disappears and the magnet assembly resets, allowing the air inlet to be reopened. In this way, the solenoid valve is switched on and off.

[0016] In some implementations, a conductive structure for fluid flow is provided between the iron core and the inner wall of the conductive cavity.

[0017] In some implementations, the conductive structure includes a conductive groove formed on the outer peripheral wall of the iron core and communicating with the conductive cavity.

[0018] In this implementation, gas enters the guide groove from the inlet and is transmitted to the outlet, which enhances the reliability of gas flow.

[0019] In some implementations, the end of the first magnet near the air inlet is provided with a first seal for blocking the air inlet; and / or

[0020] The second magnet has a second sealing element at one end near the air outlet for sealing the air outlet.

[0021] In some implementations, the valve body assembly includes a housing and an end cap, the housing having a through groove, and the end cap fastening to the housing and enclosing the through groove to form the through cavity.

[0022] In some implementations, the solenoid valve further includes a coil wound around the outer periphery of the valve body assembly.

[0023] In this implementation, the coil is energized to make the magnet component magnetic, thereby causing the magnet component and the magnetic element to attract each other.

[0024] In some implementations, a limiting groove is formed on the outer peripheral wall of the valve body assembly, and the coil is installed in the limiting groove.

[0025] In summary, this utility model has at least the following advantages:

[0026] The solenoid valve provided by this utility model has a conduction cavity in the valve body assembly. The iron core, the first magnet, and the second magnet are movably disposed in the conduction cavity. The iron core has coaxial limiting structures at its opposite ends. The first magnet and the second magnet are respectively connected to the opposite ends of the iron core through the limiting structures, so that the first magnet, the iron core, and the second magnet are coaxially arranged, thereby ensuring the concentricity between the first magnet, the iron core, and the second magnet. This avoids the problem of the solenoid valve getting stuck during operation due to the misalignment between the first magnet, the iron core, and the second magnet. Furthermore, since the iron core has coaxial limiting structures at its opposite ends, it is easier to connect the first magnet and the second magnet to the opposite ends of the iron core, thus improving assembly efficiency. Attached Figure Description

[0027] Figure 1 This is a cross-sectional structural diagram of the solenoid valve in Example 1;

[0028] Figure 2 for Figure 1 The diagram shows the structure of the limiting structure.

[0029] Figure 3 for Figure 2 The diagram shows the structure of the limiting platform and the abutment part;

[0030] Figure 4 This is a cross-sectional structural diagram of the solenoid valve in Example 2;

[0031] Figure 5 This is a schematic diagram of the solenoid valve in Example 3.

[0032] Marked in the image:

[0033] 1. Valve body assembly; 11. Conducting cavity; 12. Air inlet; 13. Air outlet; 14. Housing; 141. Conducting groove; 15. End cap; 16. Third seal; 17. Limiting groove;

[0034] 2. Iron core; 21. Limiting structure; 211. First snap-fit ​​structure; 212. Limiting countersunk platform; 22. Conducting structure;

[0035] 3. Magnet assembly; 31. First magnet; 311. Second snap-fit ​​structure; 312. Abutment part; 313. First seal; 32. Second magnet; 321. Second seal;

[0036] 4. Magnetic components;

[0037] 5. Coil. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.

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

[0040] Example 1:

[0041] Please see the appendix Figure 1 ~Appendix Figure 3 The solenoid valve of this utility model includes a valve body assembly 1, an iron core 2, and a magnet assembly 3.

[0042] Please see below. Figure 1 , Figure 1 The diagram illustrates the structural relationship of the valve body assembly 1, the iron core 2, and the magnet assembly 3 in this embodiment of the present invention. Specifically, the valve body assembly 1 has a conductive cavity 11; the iron core 2 is movably disposed within the conductive cavity 11; the magnet assembly 3 is movably disposed within the conductive cavity 11, and the magnet assembly 3 includes a first magnet 31 and a second magnet 32. The iron core 2 has coaxially arranged limiting structures 21 at its opposite ends, and the first magnet 31 and the second magnet 32 ​​are respectively connected to the opposite ends of the iron core 2 in the axial direction of the valve body assembly 1 through the limiting structures 21.

[0043] In this embodiment, the valve body assembly 1 has a through cavity 11. The iron core 2, the first magnet 31, and the second magnet 32 ​​are movably disposed in the through cavity 11. The first magnet 31 and the second magnet 32 ​​are respectively connected to the opposite ends of the iron core 2. Since the first magnet 31, the iron core 2, and the second magnet 32 ​​are coaxially arranged, and the first magnet 31 and the second magnet 32 ​​are respectively connected to the iron core 2 through the limiting structure 21, the concentricity between the first magnet 31, the iron core 2, and the second magnet 32 ​​is ensured, and the connection between the first magnet 31, the iron core 2, and the second magnet 32 ​​is made more stable. Specifically, limiting structures 21 are coaxially provided at opposite ends of the iron core 2. The first magnet 31 is connected to the first end of the iron core 2 through the limiting structures 21, and the second magnet 32 ​​is connected to the second end of the iron core 2 through the limiting structures 21. This ensures that the first magnet 31, the iron core 2, and the second magnet 32 ​​are coaxially arranged, thereby guaranteeing the concentricity of the overall structure. This avoids the phenomenon of jamming during the use of the solenoid valve due to the misalignment between the first magnet 31, the iron core 2, and the second magnet 32, improving the impact resistance of the magnet assembly 3 and the iron core 2, and further enhancing the reliability of the solenoid valve. Furthermore, since the limiting structures 21 are coaxially provided at opposite ends of the iron core 2, the assembly of the first magnet 31, the second magnet 32, and the iron core 2 is more convenient during assembly, thus improving assembly efficiency.

[0044] In the aforementioned solenoid valve, the valve body assembly 1 has a conducting cavity 11. The iron core 2, the first magnet 31, and the second magnet 32 ​​are movably disposed within the conducting cavity 11. The iron core 2 has coaxial limiting structures 21 at its opposite ends. The first magnet 31 and the second magnet 32 ​​are connected to the opposite ends of the iron core 2 through the limiting structures 21, so that the first magnet 31, the iron core 2, and the second magnet 32 ​​are coaxially disposed, thereby ensuring the concentricity between the first magnet 31, the iron core 2, and the second magnet 32. This avoids the problem of the solenoid valve getting stuck during operation due to the first magnet 31, the iron core 2, and the second magnet 32 ​​not being concentric. Furthermore, since the iron core 2 has coaxial limiting structures 21 at its opposite ends, it is easier to connect the first magnet 31 and the second magnet 32 ​​to the opposite ends of the iron core 2, thus improving assembly efficiency.

[0045] In some preferred embodiments, please refer to Figure 2 , Figure 2The diagram illustrates the structural relationship between the first locking structure 211 and the second locking structure 311 in this embodiment of the present invention. Specifically, the limiting structure 21 includes a first locking structure 211 disposed at one end of the iron core 2, and a second locking structure 311 that cooperates with the first locking structure 211 to prevent displacement of the first magnet 31 and / or the second magnet 32. The first locking structure 211 is disposed at opposite ends of the iron core 2, and the second locking structure 311 is disposed at one end of the first magnet 31 and / or the second magnet 32 ​​near the iron core 2. The second locking structure 311 engages with the first locking structure 211, thereby engaging the first magnet 31 and / or the second magnet 32 ​​with the iron core 2, thus improving the connection stability between the first magnet 31, the iron core 2, and the second magnet 32.

[0046] In some more preferred embodiments, please refer to Figure 3 , Figure 3 The diagram illustrates the structural relationship between the limiting countersunk stage 212 and the abutment portion 312 in this embodiment of the present invention. Specifically, the first locking structure 211 includes a limiting countersunk stage 212 formed at the end of the iron core 2, and the second locking structure 311 includes an abutment portion 312 provided at the end of the first magnet 31 and / or the second magnet 32. The abutment portion 312 is engaged with the limiting countersunk stage 212, so that the ends of the first magnet 31 and / or the second magnet 32 ​​are restricted within the limiting countersunk stage 212 at the end of the iron core 2, thereby making the first magnet 31, the iron core 2, and the second magnet 32 ​​coaxially arranged, further ensuring the concentricity between the first magnet 31, the iron core 2, and the second magnet 32.

[0047] Example 2:

[0048] The difference between this embodiment and Embodiment 1 is that this embodiment further optimizes the structure of the solenoid valve of this utility model. Please refer to the appendix. Figure 3 ~Appendix Figure 4 .

[0049] Please see below. Figure 4 , Figure 4 The diagram illustrates the structural relationship between the magnetic component 4, the air inlet 12, and the air outlet 13 in this embodiment of the present invention. Specifically, the solenoid valve further includes the magnetic component 4, and the valve body assembly 1 is also provided with an air inlet 12 and an air outlet 13. The air inlet 12 and the air outlet 13 are respectively disposed at opposite ends of the conductive cavity 11, and the magnetic component 4 is disposed at the end of the air inlet 12 away from the conductive cavity 11.

[0050] In this embodiment, the external coil 5 is energized to generate magnetic force in the magnetic component 4, which in turn attracts the magnetic component 4 to the magnet assembly 3. Since the magnetic component 4 is fixedly located at the end of the air inlet 12 away from the conductive cavity 11, when energized, the magnet assembly 3 is attracted by the magnetic component, thereby blocking the air inlet 12. When the power is cut off, the magnetic force disappears and the magnet assembly 3 resets, allowing the air inlet 12 to be reopened. In this way, the solenoid valve is switched on and off.

[0051] In some preferred embodiments, please refer to Figure 3 , Figure 3 The diagram illustrates the specific structure of the conductive structure 22 in this embodiment of the invention. Specifically, a conductive structure 22 for fluid flow is provided between the iron core 2 and the inner wall of the conductive cavity 11. This allows fluid entering from the air inlet 12 to be transmitted to the air outlet 13 through the conductive structure 22, thereby ensuring the reliability of the solenoid valve. Preferably, the fluid is a gas.

[0052] In some preferred embodiments, the conduction structure 22 includes a conduction groove formed on the outer peripheral wall of the iron core 2 and communicating with the conduction cavity 11. Gas enters the conduction groove from the air inlet 12 and is transmitted to the air outlet 13, enhancing the reliability of gas flow. It is understood that the ventilation area can be adjusted by adjusting the slot width of the conduction groove, further making the solenoid valve more adaptable to actual application scenarios. It should be noted that in the prior art solenoid valves, the iron core 2 is cylindrical. In order to ensure gas flow, a groove needs to be formed on the inner wall of the conduction cavity 11 of the valve body assembly 1, which is a relatively complex manufacturing process and therefore has low production efficiency.

[0053] In some more preferred embodiments, please refer to Figure 4 , Figure 4 The diagram illustrates the structural relationship between the air inlet 12 and the first seal 313, and the air outlet 13 and the second seal 321 in this embodiment of the invention. Specifically, the first magnet 31 has a first seal 313 for sealing the air inlet 12 at one end; and / or the second magnet 32 ​​has a second seal 321 for sealing the air outlet 13 at one end. The first seal 313 improves the sealing performance between the air inlet 12 and the first magnet 31, and the second seal 321 improves the sealing performance between the air outlet 13 and the second magnet 32, thereby improving the reliability of the solenoid valve. Furthermore, the first seal 313 and / or the second seal 321 also act as a buffer, preventing hard contact between the first magnet 31 and the air inlet 12, and / or between the second magnet 32 ​​and the air outlet 13, which could lead to damage to the first magnet 31 and / or the second magnet 32.

[0054] Example 3:

[0055] The difference between this embodiment and Embodiment 2 is that this embodiment further optimizes the structure of the solenoid valve of this utility model. Please refer to the appendix. Figure 5 .

[0056] The valve body assembly 1 includes a housing 14 and an end cap 15. The housing 14 has a guide groove 141, and the end cap 15 is fastened to the housing 14 and encloses the guide groove 141 to form a guide cavity 11.

[0057] In this embodiment, the air inlet 12 is located at the end of the housing 14 opposite to the end cover 15, and the air outlet 13 is located at the end of the end cover 15 opposite to the housing 14. The magnet assembly 3 and the iron core 2 are movably disposed within the guide groove 141, which improves the compactness of the overall structure and facilitates assembly. Furthermore, a third sealing element 16 is provided at the snap-fit ​​connection between the housing 14 and the end cover 15 to ensure the sealing of the connection between the housing 14 and the end cover 15.

[0058] In some preferred embodiments, the solenoid valve further includes a coil 5, which is wound around the outer periphery of the valve body assembly 1. When the coil 5 is energized, the magnet assembly 3 becomes magnetic, thereby attracting the magnet assembly 3 and the magnetic element 4. Since the magnetic element 4 is fixedly located at the end of the air inlet 12 away from the conducting cavity 11, when energized, the magnet assembly 3 is attracted by the magnetic element, thereby blocking the air inlet 12. When the power is cut off, the coil 5 stops being energized, the magnetic force disappears, and the magnet assembly 3 resets, allowing the air inlet 12 to be reopened. In this way, the solenoid valve is switched on and off.

[0059] In some more preferred embodiments, a limiting groove 17 is formed on the outer peripheral wall of the valve body assembly 1, and the coil 5 is installed in the limiting groove 17. The limiting groove 17 avoids the coil 5 from falling off the outer peripheral wall of the valve body assembly 1, thus affecting the normal operation of the solenoid valve. At the same time, it makes the overall structure more compact and reduces the space occupied by the solenoid valve, thus making the solenoid valve more adaptable to different application scenarios.

[0060] The solenoid valve of this invention has a valve body assembly 1 with a conducting cavity 11. The iron core 2, the first magnet 31, and the second magnet 32 ​​are movably disposed in the conducting cavity 11. The iron core 2 has a limiting structure 21 coaxially disposed at its opposite ends. The first magnet 31 and the second magnet 32 ​​are respectively connected to the opposite ends of the iron core 2 through the limiting structure 21, so that the first magnet 31, the iron core 2, and the second magnet 32 ​​are coaxially disposed, thereby ensuring the concentricity between the first magnet 31, the iron core 2, and the second magnet 32. This avoids the problem of the solenoid valve getting stuck during operation due to the first magnet 31, the iron core 2, and the second magnet 32 ​​not being concentric. Furthermore, since the iron core 2 has a limiting structure 21 coaxially disposed at its opposite ends, the first magnet 31 and the second magnet 32 ​​are more easily connected to the opposite ends of the iron core 2, thus improving assembly efficiency.

[0061] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0062] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0063] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0064] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0065] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A solenoid valve, characterized in that, include: The valve body assembly (1) has a through cavity (11); The iron core (2) is movably disposed within the conductive cavity (11); as well as The magnet assembly (3) is movably disposed within the conductive cavity (11), and the magnet assembly (3) includes a first magnet (31) and a second magnet (32). The iron core (2) is provided with limiting structures (21) on both ends of the iron core (2) on the opposite axis. The first magnet (31) and the second magnet (32) are respectively connected to the iron core (2) on both ends of the valve body assembly (1) in the axial direction through the limiting structures (21).

2. The solenoid valve according to claim 1, characterized in that, The limiting structure (21) includes a first snap-fit ​​structure (211) disposed at the end of the iron core (2), and the first magnet (31) and / or the second magnet (32) are provided with a second snap-fit ​​structure (311) that cooperates with the first snap-fit ​​structure (211) to prevent the first magnet (31) and / or the second magnet (32) from displacement.

3. The solenoid valve according to claim 2, characterized in that, The first snap-fit ​​structure (211) includes a limiting countersunk platform (212) opened at the end of the iron core (2), and the second snap-fit ​​structure (311) includes an abutment portion (312) provided at the end of the first magnet (31) and / or the second magnet (32).

4. The solenoid valve according to claim 1, characterized in that, The solenoid valve also includes a magnetic component (4), and the valve body assembly (1) is also provided with an air inlet (12) and an air outlet (13). The air inlet (12) and the air outlet (13) are respectively located at opposite ends of the conducting cavity (11), and the magnetic component (4) is located at the end of the air inlet (12) away from the conducting cavity (11).

5. The solenoid valve according to claim 4, characterized in that, A fluid-permeable structure (22) is provided between the iron core (2) and the inner wall of the conductive cavity (11).

6. The solenoid valve according to claim 5, characterized in that, The conductive structure (22) includes a conductive groove formed on the outer peripheral wall of the iron core (2) and communicating with the conductive cavity (11).

7. The solenoid valve according to claim 4, characterized in that, The first magnet (31) has a first sealing element (313) for sealing the air inlet (12) at one end near the air inlet (12); and / or The second magnet (32) has a second sealing element (321) for sealing the air outlet (13) at one end near the air outlet (13).

8. The solenoid valve according to claim 1, characterized in that, The valve body assembly (1) includes a housing (14) and an end cap (15). The housing (14) has a through groove (141). The end cap (15) is fastened to the housing (14) and encloses the through groove (141) to form the through cavity (11).

9. The solenoid valve according to claim 1, characterized in that, The solenoid valve also includes a coil (5) which is wound around the outer periphery of the valve body assembly (1).

10. The solenoid valve according to claim 9, characterized in that, The valve body assembly (1) has a limiting groove (17) on its outer peripheral wall, and the coil (5) is installed in the limiting groove (17).

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