solenoid valve

Abstract

The utility model provides a kind of solenoid valve, the solenoid valve includes: valve shell and valve core component;Valve core component includes first shell, solenoid, electromagnet, elastic member and armature;First shell and solenoid are set in the first accommodating space of valve shell;Second accommodating space is formed in first shell, and first shell first end is equipped with first opening, and first opening is communicated with second accommodating space and is adapted to be communicated with fluid passage;Electromagnet, elastic member and armature are set in second accommodating space, and elastic member is arranged between electromagnet and armature;At least part of the first end of armature can pass out of first opening and is adapted to block or release fluid passage;In the case that solenoid is powered off, and the elastic force of elastic member to armature is greater than the magnetic attraction between electromagnet and armature, the first end of armature moves in the direction away from electromagnet and blocks fluid passage.The control mode of the present scheme is flexible and can respond in time.

Description

Technical Field

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

[0002] In fluid supply systems, the fluid channels used to transport fluids are a crucial component. The occlusion status of these channels needs to be flexibly controlled to precisely meet actual usage requirements. Furthermore, the dynamic control capability regarding fluid channel occlusion directly impacts the safety, reliability, and energy efficiency of the entire fluid supply system. Traditional methods for controlling fluid channel occlusion primarily rely on mechanical opening and closing mechanisms (such as ball valves and gate valves). These methods not only depend on manual operation but also suffer from inflexibility and slow response times.

[0003] In existing technologies, solenoid valves are diverse in type and widely used. For example, they can control the flow direction and pressure of compressed air in pneumatic systems and the flow direction and pressure of oil in hydraulic systems, reducing shift shock and ensuring smooth equipment operation. Therefore, a solenoid valve can be designed to regulate the blockage of fluid channels in a fluid supply system, thereby solving the problems of inflexibility and slow response speed of existing methods for regulating fluid channel blockage. Utility Model Content

[0004] This invention provides a solenoid valve to solve the problems of inflexible control methods and slow response speed in existing methods for controlling the blockage of fluid channels.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

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

[0007] A valve housing, wherein a first accommodating space is formed within the valve housing;

[0008] A valve core assembly, the valve core assembly including a first housing, an electromagnetic coil, an electromagnet, an elastic element, and an armature;

[0009] The first housing and the electromagnetic coil are disposed within the first accommodating space, and the electromagnetic coil is sleeved on the outside of the first housing;

[0010] The first housing has a second accommodating space and a first opening at a first end, the first opening being connected to the second accommodating space and adapted to be connected to a fluid channel; the electromagnet, the elastic element, and the armature are disposed within the second accommodating space, and the elastic element is disposed between the electromagnet and the armature;

[0011] Wherein, at least a portion of the first end of the armature is capable of extending through the first opening and is adapted to block or release the fluid passage;

[0012] When the electromagnetic coil is de-energized and the elastic force of the elastic element on the armature is greater than the magnetic attraction between the electromagnet and the armature, the first end of the armature moves away from the electromagnet, and the first end of the armature blocks the fluid channel.

[0013] Optionally, the electromagnetic coil is energized to generate a magnetic field, and the electromagnet generates a magnetic attraction force in the magnetic field, which drives the armature to move towards the electromagnet and attract it, and the first end of the armature releases the fluid channel.

[0014] Optionally, the first end of the electromagnet is configured with a second opening facing the first receiving cavity of the armature;

[0015] The second end of the armature is provided with a second receiving cavity with a third opening facing the electromagnet;

[0016] Wherein, the first end of the elastic element passes through the second opening and is located in the first receiving cavity, and the second end of the elastic element passes through the third opening and is located in the second receiving cavity.

[0017] Optionally, the centerline of the first receiving cavity and the centerline of the second receiving cavity are on the same straight line, and the second opening is adapted to the third opening.

[0018] Optionally, the solenoid valve further includes an insulation resistor, which is sleeved on the outer periphery of the first housing, and the solenoid coil is disposed on the outer periphery of the insulation resistor.

[0019] Optionally, the insulation resistance includes a first sheet-like portion, a cylindrical portion, and a second sheet-like portion connected in sequence;

[0020] The first sheet-like portion is disposed outside the first end face of the electromagnetic coil, and the second sheet-like portion is disposed outside the second end face of the electromagnetic coil. The first end face and the second end face are two opposite end faces of the electromagnetic coil.

[0021] The electromagnetic coil is wound around the outer periphery of the cylindrical portion, and the cylindrical portion is disposed between the electromagnetic coil and the first housing.

[0022] Optionally, the outer surface of the electromagnetic coil is attached to the inner wall of the first accommodating space; or,

[0023] The outer surface of the electromagnetic coil is spaced apart from the inner wall of the first accommodating space.

[0024] Optionally, the second end of the electromagnet forms a protruding locking portion;

[0025] The second end of the first housing has a fourth opening, which communicates with the second accommodating space;

[0026] Wherein, a first slot is formed on the bottom wall of the valve housing, the first slot is connected to the fourth opening, and the locking part passes through the fourth opening and is engaged with the first slot; or, a first through hole is formed on the bottom wall of the valve housing, the first through hole is connected to the fourth opening, and the locking part passes through the fourth opening and is engaged with the first through hole.

[0027] Optionally, a fifth opening is formed on the top wall of the valve housing, and the fifth opening communicates with the first accommodating space;

[0028] The solenoid valve also includes a cover, on which a second through hole is formed, and the cover covers the fifth opening;

[0029] The first end of the first housing extends through the second through hole to the outside of the first accommodating space.

[0030] Optionally, the solenoid valve further includes an insulating component;

[0031] The insulating component is disposed between the armature and the electromagnet.

[0032] Optionally, a second slot is provided at the second end of the armature, and the insulating component is engaged in the second slot.

[0033] Optionally, the insulating component has a ring structure and is sleeved on the outside of the elastic member.

[0034] Optionally, the solenoid valve further includes a sealing element disposed on the first end of the armature;

[0035] The plugging element is adapted to block or release the fluid channel.

[0036] Optionally, the sealing member is disposed on the end face of the armature facing the first opening, and a snap-fit ​​groove is formed inside the sealing member;

[0037] The solenoid valve further includes a snap-fit ​​component, which is disposed on the end face of the armature facing the first opening, and the snap-fit ​​component is adapted to the snap-fit ​​groove.

[0038] The beneficial effects of this utility model are:

[0039] The solenoid valve provided by this utility model includes a valve shell and a valve core assembly. A first accommodating space is formed in the valve shell. The valve core assembly includes a first housing, an electromagnetic coil, an electromagnet, an elastic element, and an armature. The first housing and the electromagnetic coil are disposed within the first accommodating space, and the electromagnetic coil is sleeved on the outside of the first housing. A second accommodating space is formed within the first housing, and a first opening communicating with the second accommodating space is provided at a first end of the first housing. The first opening is adapted to communicate with a fluid passage. The electromagnet, the elastic element, and the armature are disposed within the second accommodating space, and the elastic element is disposed between the electromagnet and the armature. At least a portion of the first end of the armature can extend through the first opening and is adapted to block or release the fluid passage. When the electromagnetic coil is de-energized and the elastic force of the elastic element on the armature is greater than the magnetic attraction force between the electromagnet and the armature, the first end of the armature moves away from the electromagnet, and the first end of the armature blocks the fluid passage. The solenoid valve provided by this utility model controls the de-energization of the solenoid coil, so that the elastic force of the elastic element on the armature is greater than the magnetic attraction force between the electromagnet and the armature, thereby controlling the first end of the armature to block (or isolate) the fluid channel. The control method is flexible and can achieve the effect of timely response to control the blocking of the fluid channel. Attached Figure Description

[0040] Figure 1 This is a schematic diagram showing the overall structure of the solenoid valve provided in this embodiment of the utility model;

[0041] Figure 2 This is a cross-sectional view of one of the embodiments of the solenoid valve provided in this utility model;

[0042] Figure 3 This is a second cross-sectional view of the solenoid valve provided in an embodiment of the present utility model.

[0043] Figure 4 This is a schematic diagram showing the sealing member provided in an embodiment of the present invention disposed at the first end of the armature.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1-Valve housing; 101-First accommodating space; 102-First through hole; 103-Fifth opening; 104-Third through hole; 2-First housing; 201-Second accommodating space; 202-First end of first housing; 203-First opening; 204-Second end of first housing; 205-Fourth opening; 3-Electromagnetic coil; 301-First end face; 302-Second end face; 303-Outer surface of electromagnetic coil; 4-Electromagnet; 401-First end of electromagnet; 402-Second opening; 403-First receiving cavity; 404-Second end of electromagnet; 405-Securing part; 5-Elastic element; 501-Elastic element 502 - First end of the elastic element; 6 - Armature; 601 - First end of the armature; 602 - Second end of the armature; 603 - Third opening; 604 - Second receiving cavity; 605 - Second slot; 7 - Insulation resistance; 701 - First sheet-like part; 702 - Cylindrical part; 703 - Second sheet-like part; 8 - Cover; 801 - Second through hole; 9 - Insulation component; 10 - Sealing element; 1001 - Snap-fit ​​groove; 1002 - First sealing part; 1003 - First connecting part; 1004 - First snap-fit ​​part; 11 - Snap-fit ​​element; 1101 - Second snap-fit ​​part; 1102 - Second connecting part; 12 - Power interface. Detailed Implementation

[0046] To make the technical problems, technical solutions, and advantages of this application clearer, a detailed description will be provided below in conjunction with the accompanying drawings and specific embodiments. In the following description, specific details such as particular configurations and components are provided merely to aid in a comprehensive understanding of the embodiments of this application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. Furthermore, for clarity and brevity, descriptions of known functions and structures have been omitted.

[0047] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0048] In the various embodiments of this application, it should be understood that the sequence number of each process described below does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0049] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, without limiting the number of objects; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, "A or B" covers three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0050] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0051] To address the problems of inflexibility and slow response speed in existing control methods for the on / off state of fluid channels, this utility model provides a solenoid valve.

[0052] Figure 1 This is a schematic diagram of the overall structure of the solenoid valve provided in an embodiment of the present invention. Figure 2 One of the cross-sectional views of the solenoid valve provided in the embodiment of this utility model. Figure 3 A second cross-sectional view of the solenoid valve provided in an embodiment of this utility model, as shown below. Figures 1 to 3 As shown, the solenoid valve provided in this embodiment of the present invention includes: a valve housing 1 and a valve core assembly, wherein a first accommodating space 101 is formed in the valve housing 1, and the valve core assembly includes a first housing 2, an electromagnetic coil 3, an electromagnet 4, an elastic element 5 (or an elastic reset element) and an armature 6.

[0053] The first accommodating space 101 is a hollow structure formed inside the valve housing 1. To ensure the reliability of the valve housing 1, it can be manufactured using a one-piece molding process.

[0054] Preferably, the valve housing 1 can be configured as a cylindrical structure, and the first accommodating space 101 is coaxially arranged with the valve housing 1, that is, a hollow structure is opened at the center of the cylindrical structure as the first accommodating space 101.

[0055] The first housing 2 and the electromagnetic coil 3 are disposed within the first accommodating space 101, with the electromagnetic coil 3 sleeved on the outside of the first housing 2. It is understood that the electromagnetic coil 3 is wound around the outside of the first housing 2, and the electromagnetic coil 3 can be wound around all or part of the outside of the first housing 2.

[0056] A second accommodating space 201 is formed inside the first housing 2. That is to say, the second accommodating space 201 is a hollow structure formed inside the first housing 2, and the second accommodating space is used to accommodate parts or components.

[0057] Optionally, the first housing 2 can be generally formed into a cylindrical shape, and the first housing 2 is coaxially arranged with the valve housing 1 and the first accommodating space 101. A second accommodating space 201 is formed at the center of the first housing 2.

[0058] The first end 202 of the first housing has a first opening 203, which is connected to the second accommodating space 201. That is, the components or assemblies inside the second accommodating space 201 can move from the inside of the second accommodating space 201 to the outside of the second accommodating space 201 through the first opening 203, or the components or assemblies outside the second accommodating space 201 can move from the outside of the second accommodating space 201 to the inside of the second accommodating space 201 through the first opening 203.

[0059] The first end 202 of the first housing is the end of the first housing 2 that is close to the fluid channel.

[0060] Electromagnet 4, elastic element 5 and armature 6 are disposed in the second accommodating space 201, and elastic element 5 is disposed between electromagnet 4 and armature 6. Electromagnet 4 is disposed at the second end 204 of the first housing. Specifically, during the installation, electromagnet 4 is first disposed at the position that fits against the second end 204 of the first housing, then elastic element 5 is disposed, and then armature 6 is disposed, so that armature 6 fits against elastic element 5.

[0061] Wherein, the second end 204 of the first housing is the end of the first housing 2 that is away from the fluid channel, and the first end 202 and the second end 204 of the first housing are the two opposite ends of the first housing 204.

[0062] The first opening 203 is adapted to communicate with a fluid channel, and at least a portion of the first end 601 of the armature can extend through the first opening 203 and is adapted to block or release the fluid channel. By designing the first opening 203 to communicate with the fluid channel, at least a portion of the first end 601 of the armature enters the interior of the fluid channel after extending through the first opening 203, blocking (or isolating) the fluid channel; or, at least a portion of the first end 601 of the armature moves from the interior of the fluid channel to the interior of the first opening 203, releasing (or opening) the fluid channel.

[0063] It should also be noted that the proportion of at least the portion of the armature 6 that can pass through the first opening 203 can be set according to requirements.

[0064] The working principle of the solenoid valve in this embodiment is as follows:

[0065] When the electromagnetic coil 3 is de-energized, the magnetic attraction force of the armature 6 on the electromagnet 4 approaches zero. Since the elastic element 5 is compressed when the electromagnetic coil 3 is energized, the compressed elastic element 5 exerts a spring force (also called elastic force or elastic deformation force) on the armature 6. When this spring force is greater than the magnetic attraction force of the electromagnet 4 on the armature 6, the first end 601 of the armature moves away from the electromagnet 4 (or moves towards the fluid channel). The first end 601 of the armature blocks the fluid channel, and during this movement, the elastic element 5 resets. The first end 601 of the armature moves to the point where... Figure 2 The location shown can block the fluid passage. (As indicated) Figure 2 As shown, when the first end 601 of the armature just blocks the fluid passage, the elastic element 5 is in its natural state, that is, the elastic restoring force of the elastic element 5 is at its maximum, and the elastic element 5 makes the armature 6 and the electromagnet 4 spaced apart.

[0066] When the electromagnetic coil 3 is energized, the electromagnetic coil 3 generates a magnetic field, and the electromagnet 4 generates a magnetic attraction force on the armature 6 in the magnetic field. The armature 6 moves towards the electromagnet 4 due to the magnetic attraction force of the electromagnet 4 (or the armature 6 moves away from the fluid channel due to the magnetic attraction force of the electromagnet 4) until the armature 6 and the electromagnet 4 are attracted to each other. During the process of the armature 6 moving towards the electromagnet 4, the first end 601 of the armature releases the fluid channel. Specifically, when the electromagnetic coil 3 is energized, it generates a magnetic field. After the electromagnet 4 is magnetized, a magnetic circuit is formed. The energy of the magnetic field is converted into a magnetic attraction force between the electromagnet 4 and the armature 6. This magnetic attraction force drives the armature 6 towards the electromagnet 4. During this movement, the elastic element 5 is compressed by the armature 6. The compressed elastic element 5 generates a spring force (also called elastic force or elastic deformation force) on the armature 6. When the magnetic attraction force is greater than the spring force, the magnetic attraction force can pull the armature 6 towards the electromagnet 4 until the armature 6 and the electromagnet 4 are attracted together, and the first end 601 of the armature releases the fluid channel. The first end 601 of the armature moves to... Figure 3 The location shown allows for the release of fluid channels. (As indicated) Figure 3 As shown, when the fluid channel is fully released at the first end 60 of the armature, the armature 6 and the electromagnet 4 are attracted together, and the compression of the elastic element 5 reaches its maximum. And, as... Figure 3As shown, when the first end 601 of the armature is fully released from the fluid channel, the first end 601 of the armature is flush with the first opening 203, that is, the first end 601 of the armature just moves back into the first opening 203. After the electromagnetic coil 3 is de-energized, the magnetic field disappears, the magnetic attraction force of the armature 6 on the electromagnet 4 approaches zero, and the elastic element 5 in the compressed state generates a spring force on the armature 6. When the spring force is greater than the resultant force of the magnetic attraction force of the armature 6 on the electromagnet 4 and the gravity of the electromagnet 4 itself, the armature 6 moves away from the electromagnet 4 to the first end 601 of the armature to block the fluid channel.

[0067] It should be noted that in this embodiment, after the electromagnet 4 is de-energized, the magnetic attraction force can be less than the elastic force within 4-6 milliseconds, achieving the effect of quickly responding to block the fluid channel.

[0068] Optionally, the coil structure of the electromagnetic coil 3 can be designed using simulation algorithms to ensure the high-temperature stability of the electromagnetic coil, improve electromagnetic efficiency, and reduce energy loss. For the electromagnetic coil 3, high-efficiency conductive materials and low-impedance winding methods can be selected to reduce the coil's resistance and inductance, reduce energy consumption, and achieve the purpose of energy-saving design. The electromagnetic coil 3 can use high-quality magnetic permeable materials, such as silicon steel sheets, to reduce hysteresis loss and eddy current loss and improve overall efficiency. Alternatively, the electromagnetic coil 3 can use superconducting materials to improve the energy-saving performance of the electromagnet.

[0069] Optionally, the first housing 2 is made of a metal material, such as steel, i.e., the first housing 2 is a steel shell.

[0070] The solenoid valve provided in this embodiment of the utility model can control the first end 601 of the armature to block or release the fluid channel by controlling the solenoid coil 3 inside the solenoid valve to be de-energized or energized, thereby achieving the purpose of controlling the opening and closing of the fluid channel. The control method is flexible and can achieve the effect of timely response.

[0071] It should also be noted that, in this embodiment, the fluid channel is a fluid channel for flowing liquid phase fluid, a fluid channel for flowing gas phase fluid, or a fluid channel for flowing mixed fluid, wherein the mixed fluid is a fluid after mixing liquid phase fluid and gas phase fluid.

[0072] In this embodiment, electromagnet 4 is a pure iron electromagnet, a silicon steel sheet electromagnet, or an alloy electromagnet. Among them, pure iron electromagnets have the advantages of high permeability, good magnetic transmission effect, and low cost; silicon steel sheet electromagnets have the advantages of low eddy current loss, strong stability, and suitability for high-frequency operation; alloy electromagnets have the advantages of high saturation magnetic induction intensity and low hysteresis loss, such as iron-nickel alloy electromagnets.

[0073] In this embodiment, the elastic element 5 is a spring, a bellows, or an elastic rubber component.

[0074] Optionally, the spring is at least one of a double-stage variable diameter spring, a spiral spring, and a ring spring. Among them, the double-stage variable diameter spring can achieve precise force transmission and buffering, and has good shock absorption performance; the spiral spring can store a large elastic potential energy in a small space, is suitable for scenarios that require continuous torque output, and has the advantages of stable output torque and smooth force change during deformation; the ring spring has advantages such as strong load-bearing capacity, long service life, and suitability for scenarios with repeated impacts.

[0075] Optionally, the corrugated pipe can be a metal corrugated pipe, a plastic corrugated pipe, or a rubber corrugated pipe. Among them, metal corrugated pipes have the advantages of high pressure resistance, high temperature resistance, and high strength; plastic corrugated pipes have the advantages of corrosion resistance, light weight, and low cost; and rubber corrugated pipes have the advantages of corrosion resistance and wear resistance.

[0076] In some embodiments, the first end 401 of the electromagnet is configured with a second opening 402 facing the first receiving cavity 403 of the armature, and the second end 602 of the armature is configured with a third opening 603 facing the second receiving cavity 604 of the electromagnet 4; wherein, the first end 401 of the electromagnet is the end of the electromagnet 4 facing the armature 6, and the second end 602 of the armature is the end of the armature 6 facing the electromagnet 4.

[0077] The first receiving cavity 403 can be a receiving space, and the first receiving cavity 403 is coaxially arranged with the electromagnet 4. Components or parts inside the first receiving cavity 403 can move from the inside of the first receiving cavity 403 to the outside of the first receiving cavity 403 through the second opening 402, or components or parts outside the first receiving cavity 403 can move from the outside of the first receiving cavity 403 to the inside of the first receiving cavity 403 through the second opening 402.

[0078] The second receiving cavity 604 can be a receiving space, and the second receiving cavity 604 is coaxially arranged with the armature 6. Components or assemblies inside the second receiving cavity 604 can move from the inside of the second receiving cavity 604 to the outside of the second receiving cavity 604 through the third opening 603, or components or assemblies outside the second receiving cavity 604 can move from the outside of the second receiving cavity 604 to the inside of the second receiving cavity 604 through the third opening 603.

[0079] The first end 501 of the elastic element passes through the second opening 402 and is located within the first receiving cavity 403, while the second end 502 of the elastic element passes through the third opening 603 and is located within the second receiving cavity 604. By opening opposing receiving cavities and openings on the electromagnet 4 and the armature 6 respectively, the first end 501 and the portion near the first end 501 of the elastic element extend into the receiving cavity inside the electromagnet 4, and the second end 502 and the portion near the second end 502 of the elastic element extend into the receiving cavity inside the armature 6. This design saves space within the valve core and ensures structural simplicity. The first end 501 and the second end 502 of the elastic element are the two opposing ends on the elastic element 5.

[0080] Optionally, the centerline of the first receiving cavity 403 and the centerline of the second receiving cavity 604 are on the same straight line, that is, the first receiving cavity 403 and the second receiving cavity 604 are coaxially arranged, and the second opening 402 is adapted to the third opening 603. The adaptation of the second opening 402 to the third opening 603 can be understood as the difference between the diameter of the second opening 402 and the diameter of the third opening 603 being less than a preset difference value. Preferably, the diameter of the second opening 402 is equal to the diameter of the third opening 603. The preset difference value can be a small value, for example, within the range of 1cm-2cm.

[0081] In some embodiments, such as Figure 2 and Figure 3 As shown, the solenoid valve also includes an insulating resistor 7, which is sleeved on the outer periphery of the first housing 2. The solenoid coil 3 is disposed on the outer periphery of the insulating resistor 7, that is, the insulating resistor 7 is sleeved on the outer periphery of the first housing 2, and multiple layers of the solenoid coil 3 are axially wound on the outer surface of the insulating resistor 7. The insulating resistor 7 serves as insulation, preventing the solenoid coil 3 from being short-circuited when energized, ensuring the safety of the circuit in the solenoid coil 3. The insulating resistor 7 also serves as support for the solenoid coil 3 and also serves as a heat dissipation device.

[0082] In some embodiments, the insulation resistor 7 includes a first sheet-like portion 701, a cylindrical portion 702, and a second sheet-like portion 703 connected in sequence. The first sheet-like portion 701 is disposed outside the first end face 301 of the electromagnetic coil, serving as a limiting element to prevent the electromagnetic coil 3 from becoming tangled on the first end face 301. The second sheet-like portion 703 is disposed outside the second end face 302 of the electromagnetic coil. The first end face 301 and the second end face 302 are two opposite end faces of the electromagnetic coil 3, and the second sheet-like portion 703 also serves as a limiting element to prevent the electromagnetic coil 3 from becoming tangled on the second end face 302. The electromagnetic coil 3 is wound around the outer periphery of the cylindrical portion 702, and the cylindrical portion 702 is disposed between the electromagnetic coil 3 and the first housing 2, i.e., the cylindrical portion 702 is fitted around the outer periphery of the first housing 2, and multiple layers of the electromagnetic coil 3 are axially wound on the outer surface of the cylindrical portion 702.

[0083] In an optional implementation, the outer surface 303 of the electromagnetic coil is attached to the inner wall of the first accommodating space 101. It can be understood that in this implementation, the electromagnetic coil 3 comprises multiple layers of coil wound axially around the first housing 2, with the outermost layer of the electromagnetic coil 3 wound to fit against the inner wall of the first accommodating space 101, or in other words, the outermost layer of the electromagnetic coil 3 wound to contact the inner wall of the first accommodating space 101. This implementation maximizes the magnetic attraction force generated by the electromagnetic coil 3, achieving rapid control of the fluid channel's opening and closing, and improving the response speed of the solenoid valve.

[0084] In another alternative implementation, the outer surface 303 of the electromagnetic coil is spaced apart from the inner wall of the first accommodating space 101. It is understood that in this implementation, the electromagnetic coil 3 comprises multiple layers of coil wound axially around the first housing 2, and the outermost layer of the electromagnetic coil 3 does not adhere to or contact the inner wall of the first accommodating space 101. This design reduces the amount of electromagnetic coil 3 used, achieving material savings.

[0085] In some embodiments, such as Figure 2 and Figure 3 As shown, the second end 404 of the electromagnet forms a protruding locking part 405, which serves to fix the electromagnet 4 and prevent it from shaking. The second end 404 and the first end 401 of the electromagnet are the two opposite ends of the electromagnet 4.

[0086] A fourth opening 205 is formed at the second end 204 of the first housing, and the fourth opening 205 communicates with the second accommodating space 201. The second end 204 and the first end 202 of the first housing are opposite ends on the first housing. The locking part 405 can extend through the fourth opening 405 to the outside of the second accommodating space 201.

[0087] The locking part 405 secures the electromagnet 4 in the following two ways:

[0088] Fixing Method 1: A first retaining groove is formed on the bottom wall of the valve housing 1. The first retaining groove communicates with the fourth opening. The retaining part 405 passes through the fourth opening 205 and is engaged with the first retaining groove. It can be understood that the first retaining groove is a groove formed on the bottom wall of the valve housing 1 to accommodate the retaining part 405. The shape of the inner surface of the first retaining groove is the same as the shape of the outer surface of the retaining part 405. That is, after the retaining part 405 passes through the fourth opening 205, it is located in the first retaining groove and is engaged with the first retaining groove.

[0089] Fixing Method Two: A first through hole 102 is formed on the bottom wall of the valve housing 1. The first through hole 102 communicates with the fourth opening 205. The locking part 405 passes through the fourth opening 205 and is engaged with the first through hole 102. It can be understood that the first through hole 102 is a through hole constructed on the valve housing 1 to accommodate the locking part 405. The shape of the inner surface of the first through hole 102 is the same as the shape of the outer surface of the locking part 405. That is, after the locking part 405 passes through the fourth opening 205, it is located inside the first through hole 102 and is engaged with the first through hole 102.

[0090] By using either of the two fixing methods described above, the locking part 405 can both limit the movement of the electromagnet 4 and prevent the electromagnet 4 from shifting or shaking.

[0091] The bottom wall of valve housing 1 can be understood as the wall surface of valve housing 1 that is far away from the fluid passage.

[0092] In some embodiments, a fifth opening 103 is formed on the top wall of the valve housing 1. The fifth opening 103 communicates with the first accommodating space 101. The fifth opening 103 allows components or assemblies inside the first accommodating space 101 to enter and exit the first accommodating space 101, or allows components or assemblies outside the first accommodating space 101 to enter the first accommodating space 101 through the opening. That is, components such as the electromagnetic coil 3, the first housing 2, and the insulation resistor 7 can all enter the first accommodating space 101 through the fifth opening 103.

[0093] The top wall of valve housing 1 can be understood as the wall surface of valve housing 1 that is close to the fluid passage.

[0094] The solenoid valve also includes a cover 8, on which a second through hole 801 is formed, and the cover 8 covers the fifth opening 103. The function of the second through hole 801 is to provide a through space for the first housing 2, that is, the first end 202 of the first housing extends through the second through hole 801 to the outside of the first accommodating space 101.

[0095] In this embodiment, the cover 8 can not only prevent dirt and dust, but also limit the movement of components such as the electromagnetic coil 3 and the insulation resistor 7 in the first accommodating space 101.

[0096] Alternatively, the cover 8 can cover the fifth opening 103 by means of a threaded connection or a snap-fit.

[0097] It should be noted that if the attractive force between the armature 6 and the electromagnet 4 is too strong, the armature 6 and the electromagnet 4 will not separate immediately after the electromagnetic coil 6 is de-energized, affecting the response speed. To avoid this problem, the attractive force between the armature 6 and the electromagnet 4 is reduced. In some embodiments, such as... Figure 2 and Figure 3 As shown, the solenoid valve also includes an insulating component 9, which is disposed between the armature 6 and the electromagnet 4. When the armature 6 and the electromagnet 4 are engaged, the insulating component 9 reduces the engagement area between them, thereby reducing the engagement force and ensuring that the armature 6 and the electromagnet 4 separate quickly after the solenoid coil 3 is de-energized, shortening the separation time and improving the response speed. Furthermore, the insulating component 9 also isolates the current conduction between the electromagnet 4 and the armature 6, and buffers the impact of the armature 6's movement on the electromagnet 4.

[0098] In one optional implementation, the insulating component 9 can be directly disposed between the armature 6 and the electromagnet 4. In another optional implementation, a second slot 605 is provided at the second end 602 of the armature, and the insulating component 9 is disposed in the second slot 605. By providing the second slot 605, the insulating component 9 can be fixedly disposed at the second end 602 of the armature, preventing the insulating component 9 from affecting the movement of the armature 6, and also preventing the movement of the armature 6 from causing the position of the insulating component 9 to change.

[0099] Optionally, the insulating component 9 has a ring structure and is sleeved on the outside of the elastic member 5. It should be noted that since the first end 401 of the electromagnet has a first receiving cavity 403 and the second end 602 of the armature has a second receiving cavity 604, the elastic member 5 is accommodated through the first receiving cavity 403 and the second receiving cavity 604. Therefore, in order not to affect the setting of the elastic member 5, the insulating component 9 can be designed as a ring structure, and the elastic member 5 is set inside the ring structure, entering the first receiving cavity 403 and the second receiving cavity 604.

[0100] The insulating component 9 can be made of rubber material, which can serve as insulation and prevent chemical corrosion.

[0101] In some embodiments, the solenoid valve further includes a sealing element 10 (also referred to as a sealing head), which is disposed on the first end 601 of the armature. A schematic diagram of the sealing element 10 disposed on the first end 601 of the armature is shown below. Figure 4 As shown.

[0102] Optionally, the sealing element 10 can be sleeved on the first end 601 of the armature (e.g., Figure 4 (as shown), or, the sealing member 10 is connected to the first end 601 of the armature by means of bolt connection, or the sealing member 10 is connected to the first end 601 of the armature by means of welding.

[0103] The sealing element 10 is suitable for sealing or releasing the fluid channel. That is, the first end 601 of the armature drives the sealing element 10 to pass through the first opening 203 and enter the fluid channel to seal (or isolate) the fluid channel, or the first end 601 of the armature drives the sealing element 10 to move from the inside of the fluid channel to the inside of the first opening 203 to release (or open) the fluid channel.

[0104] The fluid channel is sealed by the sealing component 10 to ensure the airtightness of the seal and prevent fluid leakage from the fluid channel after sealing.

[0105] Optionally, the sealing component 10 is made of rubber, silicone, metal, or plastic. Among them, rubber and silicone are flexible materials, while metal and plastic are rigid materials.

[0106] The sealing component 10 is made of flexible materials such as rubber and silicone, which makes it suitable for fluid channels of various shapes. The sealing component 10 is also made of rigid materials such as metal and plastic, which can ensure the service life of the sealing component 10 and increase its strength.

[0107] Rubber materials include nitrile rubber, fluororubber, and ethylene propylene rubber. Among them, nitrile rubber has advantages such as abrasion resistance and aging resistance; fluororubber has advantages such as high temperature resistance and corrosion resistance; and ethylene propylene rubber has advantages such as water resistance and steam resistance.

[0108] Silicone materials include room temperature vulcanizing silicone rubber and liquid silicone rubber. Room temperature vulcanizing silicone rubber has the advantages of simple molding, high elasticity and high strength; liquid silicone rubber has the advantages of high molding precision and strict sealing.

[0109] Metallic materials include stainless steel, copper alloys, and aluminum alloys. Among them, stainless steel has advantages such as corrosion resistance and moisture resistance; copper alloys have advantages such as ease of processing and low-temperature resistance; and aluminum alloys have advantages such as light weight and strong corrosion resistance.

[0110] Plastic materials include polyethylene, polyvinyl chloride (PVC), and polypropylene. Polyethylene has advantages such as good chemical stability and resistance to acid corrosion; PVC has advantages such as adjustable hardness and suitability for low-temperature environments; and polypropylene has advantages such as high-temperature resistance and resistance to corrosion.

[0111] It should be noted that the specific material used to make the sealing component 10 can be determined based on the shape and size of the fluid channel and the properties of the fluid flowing within the fluid channel.

[0112] Optionally, the sealing member 10 is disposed on the end face of the armature 6 facing the first opening 203, and a snap-fit ​​groove 1001 is constructed inside the sealing member 10, specifically, as shown in... Figure 4 As shown, the sealing member 10 includes a first sealing part 1002, a first connecting part 1003 and a first snap-fit ​​part 1004 connected in sequence. The first sealing part 1002, the first connecting part 1003 and the first snap-fit ​​part 1004 together form a snap-fit ​​groove 1001 with the opening facing the armature 6.

[0113] The solenoid valve also includes a snap-fit ​​element 11, which is disposed on the end face of the armature 6 facing the first opening 203, and the snap-fit ​​element 11 is adapted to the snap-fit ​​groove 1001. The adaptation of the snap-fit ​​element 11 to the snap-fit ​​groove 1001 can be understood as follows: after the sealing element 10 is sleeved on the snap-fit ​​element 11, the sealing element 10 is engaged with the snap-fit ​​element 11 through the snap-fit ​​groove 1001. Specifically, as... Figure 4 As shown, the snap-fit ​​component 11 includes a second snap-fit ​​portion 1101 and a second connecting portion 1102 connected to the second snap-fit ​​portion 1101. The second snap-fit ​​portion 1101 protrudes toward the first connecting portion 1003, and the first snap-fit ​​portion 1004 protrudes toward the second connecting portion 1102, so that the snap-fit ​​component 11 is adapted to the snap-fit ​​groove 1001.

[0114] It is understood that the first end of the second connecting part 1102 is connected to the second snap-fit ​​part 1101, and the first end of the second connecting part 1102 is connected to the end face of the armature 6 facing the first opening 203.

[0115] The sealing element 10 is connected to the snap-fit ​​element 11 by a snap-fit ​​connection, which ensures the stability of the sealing element 10 on the snap-fit ​​element 11 and prevents the sealing element 10 from falling off the armature 6 during the movement of the armature 6 or during the process of sealing and releasing the fluid channel.

[0116] The first sealing part 1002 is suitable for sealing or releasing the fluid channel. That is, the first end 601 of the armature drives the first sealing part 1002 of the sealing member 10 to pass through the first opening 203 and enter the fluid channel to seal (or isolate) the fluid channel, or the first end 601 of the armature drives the first sealing part 1002 of the sealing member 10 to move from the inside of the fluid channel to the inside of the first opening 203 to release (or open) the fluid channel.

[0117] The snap-fit ​​component 11 is T-shaped or I-shaped, such as... Figure 4 As shown, the snap-fit ​​component 11 is T-shaped. In this embodiment, designing the snap-fit ​​component 11 as T-shaped or I-shaped can reduce material usage while ensuring the engagement effect between the sealing component 10 and the snap-fit ​​component 11, and ensuring the stability of the connection between the sealing component 10 and the snap-fit ​​component 11.

[0118] In some embodiments, such as Figure 1 As shown, the solenoid valve also includes a power interface 12, which is located outside the valve body 1. The power interface 12 is used to connect to a power source, that is, to energize and de-energize the solenoid coil 3 through the power interface 12.

[0119] In some embodiments, the solenoid valve provided in this embodiment can also be used in combination with other solenoid valves. In this usage scenario, a mounting groove is also provided on the outside of the first housing 2. The mounting groove is located on the outside of the portion of the first housing 2 that extends beyond the first accommodating space 101 through the second through hole 801. A sealing ring is provided in the mounting groove. After the solenoid valve provided in this embodiment is combined with other solenoid valves, the sealing ring fits against the inner surface of the other solenoid valves, so that the interior of the connection between the solenoid valve provided in this embodiment and other solenoid valves forms a sealed space, ensuring sealing performance. The sealing ring can be made of silicone or rubber.

[0120] In some embodiments, such as Figure 2 and Figure 3 As shown, a third through hole 104 is also provided on the valve body 1. The third through hole 104 is used to install the solenoid valve provided in this embodiment onto other structures, or the third through hole 104 is used to connect the solenoid valve provided in this embodiment to other solenoid valves. For example, the third through hole 104 is a threaded hole.

[0121] To ensure installation stability, there are two third through holes 104, which are symmetrically arranged on the valve body 1.

[0122] The solenoid valve provided in this embodiment of the present invention can flexibly adjust the composition of its internal components, and can flexibly and quickly control the blocking and opening of the fluid channel, and can achieve a timely response effect.

[0123] The fluid channel control structure provided in this embodiment of the utility model de-energizes the solenoid valve in the fluid channel control structure, so that the elastic force of the elastic element on the armature is greater than the magnetic attraction force between the electromagnet and the armature, thereby controlling the first end of the armature to block (or isolate) the fluid channel. The control method is flexible and can achieve the effect of timely response to control the blocking of the fluid channel.

[0124] It should be noted that the fluid channel control structure provided in this utility model embodiment includes the fluid channel control structure of the solenoid valve described above. Therefore, all embodiments of the solenoid valve described above are applicable to the fluid channel control structure and can achieve the same or similar technical effects.

[0125] The above describes the preferred embodiments of this utility model. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of this utility model, and these improvements and modifications are also within the protection scope of this utility model.

Claims

1. A solenoid valve, characterized in that, include: Valve housing (1), a first accommodating space (101) is formed inside the valve housing (1); A valve core assembly, the valve core assembly including a first housing (2), an electromagnetic coil (3), an electromagnet (4), an elastic element (5) and an armature (6); The first housing (2) and the electromagnetic coil (3) are disposed in the first accommodating space (101), and the electromagnetic coil (3) is sleeved on the outside of the first housing (2); The first housing (2) has a second accommodating space (201) formed inside it and a first opening (203) is opened at the first end (202) of the first housing. The first opening (203) is connected to the second accommodating space (201) and is adapted to be connected to a fluid channel. The electromagnet (4), the elastic element (5) and the armature (6) are disposed in the second accommodating space (201), and the elastic element (5) is disposed between the electromagnet (4) and the armature (6). Wherein, at least a portion of the first end (601) of the armature is capable of extending through the first opening (203) and is adapted to block or release the fluid passage; When the electromagnetic coil (3) is de-energized and the elastic force of the elastic element (5) on the armature (6) is greater than the magnetic attraction between the electromagnet (4) and the armature (6), the first end (601) of the armature moves away from the electromagnet (4) and the first end (601) of the armature blocks the fluid channel.

2. The solenoid valve according to claim 1, characterized in that, The electromagnetic coil (3) is energized to generate a magnetic field, and the electromagnet (4) generates a magnetic attraction force in the magnetic field, which drives the armature (6) to move toward the electromagnet (4) and attract it. The first end (601) of the armature releases the fluid channel.

3. The electromagnetic valve according to claim 1, characterized by The first end (401) of the electromagnet is constructed with a second opening (402) facing the first receiving cavity (403) of the armature (6). The second end (602) of the armature is provided with a third opening (603) facing the second receiving cavity (604) of the electromagnet (4). The first end (501) of the elastic member passes through the second opening (402) and is located in the first receiving cavity (403), and the second end (502) of the elastic member passes through the third opening (603) and is located in the second receiving cavity (604).

4. The electromagnetic valve according to claim 3, characterized by The centerline of the first receiving cavity (403) and the centerline of the second receiving cavity (604) are on the same straight line, and the second opening (402) is adapted to the third opening (603).

5. The electromagnetic valve according to claim 1, characterized by The solenoid valve also includes an insulation resistor (7), which is sleeved on the outer periphery of the first housing (2), and the solenoid coil (3) is disposed on the outer periphery of the insulation resistor (7).

6. The solenoid valve according to claim 5, characterized in that, The insulation resistance (7) includes a first sheet-like portion (701), a cylindrical portion (702), and a second sheet-like portion (703) connected in sequence. The first sheet-like portion (701) is disposed outside the first end face (301) of the electromagnetic coil, and the second sheet-like portion (703) is disposed outside the second end face (302) of the electromagnetic coil. The first end face (301) and the second end face (302) are two opposite end faces of the electromagnetic coil (3). The electromagnetic coil (3) is wound around the outer periphery of the cylindrical part (702), and the cylindrical part (702) is disposed between the electromagnetic coil (3) and the first housing (2).

7. The electromagnetic valve according to any one of claims 1 to 6, characterized by The outer surface (303) of the electromagnetic coil is in contact with the inner wall of the first accommodating space (101); or, The outer surface (303) of the electromagnetic coil is spaced apart from the inner wall of the first accommodating space (101).

8. The electromagnetic valve according to claim 7, characterized by The second end (404) of the electromagnet forms a protruding locking part (405). The second end (204) of the first housing has a fourth opening (205), which is connected to the second accommodating space (201); Wherein, a first slot is provided on the bottom wall of the valve housing (1), the first slot is connected to the fourth opening (205), and the locking part (405) passes through the fourth opening (205) and is connected to the first slot; or, a first through hole (102) is provided on the bottom wall of the valve housing (1), the first through hole (102) is connected to the fourth opening (205), and the locking part (405) passes through the fourth opening (205) and is connected to the first through hole (102).

9. The electromagnetic valve according to claim 1 or 2, characterized by A fifth opening (103) is provided on the top wall of the valve housing (1), and the fifth opening (103) is connected to the first accommodating space (101); The solenoid valve also includes a cover (8), on which a second through hole (801) is provided, and the cover (8) covers the fifth opening (103). The first end (202) of the first housing extends through the second through hole (801) to the outside of the first accommodating space (101).

10. The electromagnetic valve according to claim 1, characterized by The solenoid valve also includes an insulating component (9). The insulating component (9) is disposed between the armature (6) and the electromagnet (4).

11. The electromagnetic valve according to claim 10, characterized by The second end (602) of the armature has a second slot (605), and the insulating component (9) is engaged in the second slot (605).

12. The electromagnetic valve according to claim 10 or 11, characterized by The insulating component (9) has a ring structure and is sleeved on the outside of the elastic member (5).

13. The electromagnetic valve according to claim 1 or 2, characterized by The solenoid valve also includes a plug (10), which is disposed on the first end (601) of the armature; The plugging element (10) is adapted to plug or release the fluid channel.

14. The electromagnetic valve according to claim 13, characterized by The sealing member (10) is disposed on the end face of the armature (6) facing the first opening (203), and a snap-fit ​​groove (1001) is constructed inside the sealing member (10). The solenoid valve also includes a snap-fit ​​component (11), which is disposed on the end face of the armature (6) facing the first opening (203) and is adapted to the snap-fit ​​groove (1001).

Images