Solenoid valve

Abstract

The utility model provides an electromagnetic valve, and relates to the technical field of control valves. The electromagnetic valve comprises a valve body and a base, the base is arranged in the valve body and is coaxial with the valve body; wherein the end part of the valve body along the axial direction of the valve body is provided with a riveting part, so that the base is propped against the inner wall of the base, and the base is connected with the valve body through welding. Riveting is carried out on the riveting part, it is guaranteed that the base does not move, meanwhile, the compression strength of the whole electromagnetic valve can be guaranteed, tin soldering is carried out between the base and the valve body after riveting, and therefore it is guaranteed that the base and the valve body do not leak outwards, and the sealing effect is achieved. As the base and the valve body do not need to be provided with threads, the wall thickness of the base and the wall thickness of the valve body can be properly reduced, the used materials of the base and the valve body are reduced, the cost of original materials is reduced, and the requirements for miniaturization and light weight are met.

Description

Technical Field

[0001] The utility model generally relates to the technical field of control valves, and more specifically, to a solenoid valve. Background Art

[0002] As an automatic control component, a solenoid valve mainly realizes the opening / closing of the throttle port of the valve body by the magnetic force generated by an electromagnetic coil to achieve the separation and combination of the core iron relative to the attractor. In the related art, the solenoid valve includes a valve body, a core iron, and a valve stem. A first valve cavity, a second valve cavity, and a throttle port communicating the first valve cavity and the second valve cavity are provided in the valve body. The valve stem is disposed in the first valve cavity and fixedly connected to the core iron, and a throttle member for changing the flow rate of the throttle port is provided in the second valve cavity.

[0003] In the related art, the base and the valve body are fixedly installed by threads. In order to set the threads, the wall thickness of the valve body and the base is increased, resulting in a relatively high material cost and a relatively large occupied space. Summary of the Utility Model

[0004] The utility model provides a solenoid valve, which reduces the production cost and improves the connection stability.

[0005] According to one aspect of the utility model, a solenoid valve is provided, including:

[0006] A valve body;

[0007] A base, disposed in the valve body and coaxially arranged with the valve body;

[0008] Wherein, a riveting portion is provided at an end of the valve body along the axial direction of the valve body, so that the base abuts against the inner wall of the base, and the base and the valve body are connected by welding.

[0009] In some embodiments, an installation hole is provided at the center of the valve body, and the base is disposed in the installation hole;

[0010] Wherein, along the axial direction of the valve body, the length of the installation hole is greater than the length of the base.

[0011] In some embodiments, the projection of the riveting portion on a reference plane and the projection of the base on the reference plane at least partially overlap;

[0012] Wherein, the reference plane is parallel to the axial direction of the valve body.

[0013] In some embodiments, a first limiting groove is provided on one of the inner wall of the valve body and the outer wall of the base, and a limiting platform is provided on the other, and the limiting platform is disposed in the first limiting groove for limiting between the valve body and the base.

[0014] In some of these embodiments, a first chamfer is provided on one side of the base facing the riveting portion.

[0015] In some of these embodiments, a second limiting groove is provided on one side of the base facing the riveting portion, and the second limiting groove communicates with the first chamfer.

[0016] In some of these embodiments, the first chamfer is of an annular structure, and the first chamfer and the valve body are coaxially arranged;

[0017] And / or, the second limiting groove is of an annular structure, and the second limiting groove and the valve body are coaxially arranged.

[0018] In some of these embodiments, along the axial direction of the valve body, a second chamfer is provided on the outer wall of the end of the riveting portion away from the valve body.

[0019] In some of these embodiments, it further includes a valve stem and a throttle member. A first valve cavity, a second valve cavity and a valve port are provided in the valve body. The first valve cavity communicates with the second valve cavity through the valve port. The throttle member is arranged in the second valve cavity. The valve stem is arranged in the first valve cavity and can slide relative to the first valve cavity. The valve stem passes through the valve port and can abut against the throttle member to selectively block the valve port by the throttle member.

[0020] In some of these embodiments, it further includes a first elastic member. An installation groove is provided on the side of the base away from the riveting portion. The first elastic member and the throttle member are arranged in the installation groove. Along the axial direction of the valve body, one end of the first elastic member abuts against the bottom of the installation groove, and the other side abuts against the throttle member.

[0021] One embodiment of the present utility model has the following advantages or beneficial effects:

[0022] For the solenoid valve provided in this embodiment, the base and the valve body are coaxially arranged to ensure the coaxiality between the base and the valve body. After the base is installed into the valve body, by riveting at the riveting portion, while ensuring that the base does not move, the pressure resistance of the entire solenoid valve can also be ensured. After riveting, soldering is performed between the base and the valve body to ensure no leakage and sealing effect between the base and the valve body.

[0023] Compared with the related art, since there is no need to provide threads between the base and the valve body, the wall thickness of the base and the valve body can be appropriately reduced, reducing the use of materials for the base and the valve body, lowering the raw material cost, and meeting the requirements of miniaturization and light weight. By riveting at the riveting portion, the strength can be ensured. The soldering between the base and the valve body, such as soldering at a relatively low temperature, can reduce the change of stress and avoid the risk of valve port deformation caused by thermal expansion and contraction, thereby ensuring no internal leakage of the product and improving the sealing effect.

[0024] After being pressed tightly between the base and the valve body, this application is fixed by riveting through the riveting part, and then further fixed by the installation method of welding and sealing, so as to improve the installation reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] For a better understanding of the present utility model, reference may be made to the embodiments shown in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted to emphasize and clearly illustrate the technical features of the present utility model. In addition, related elements or components may have different arrangements as known in the art. Moreover, in the drawings, the same reference numerals denote the same or similar components in each drawing. By describing its exemplary embodiments in detail with reference to the drawings, the above and other features and advantages of the present utility model will become more apparent.

[0026] Wherein:

[0027] Figure 1 The figure shows a schematic structural diagram of a solenoid valve of one or more embodiments of the present utility model.

[0028] Figure 2 The figure shows Figure 1 A partial enlarged view at A.

[0029] Wherein, the reference numerals are explained as follows:

[0030] 1. Valve body; 2. Base; 3. Valve stem; 4. Throttle member; 5. First elastic member; 6. First pipe; 7. Second pipe; 8. Gasket; 9. Core iron; 10. Conduit; 101. Attracting member; 102. Second elastic member; 103. Split magnetic ring;

[0031] 11. Riveting part; 12. Installation hole; 13. First limiting groove; 14. Second chamfer; 15. First valve cavity; 16. Second valve cavity; 17. Valve port;

[0032] 21. Limiting platform; 22. First chamfer; 23. Second limiting groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] Next, the technical solutions in the exemplary embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the exemplary embodiments of the present utility model. The exemplary embodiments described herein are only for the purpose of illustration and are not intended to limit the protection scope of the present utility model. Therefore, it should be understood that various modifications and changes can be made to the exemplary embodiments without departing from the protection scope of the present utility model.

[0034] In the description of the present utility model, unless otherwise clearly specified and defined, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance; the term "plurality" means two or more; the term "and / or" includes any combination and all combinations of one or more of the associated listed items. In particular, referring to "the / a" object is also intended to mean one of the possible plurality of such objects.

[0035] Unless otherwise specified or stated, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] Furthermore, in the description of the present utility model, it should be understood that the orientation terms such as "upper", "lower", "inner", and "outer" described in the exemplary embodiments of the present utility model are described from the angles shown in the drawings and should not be construed as limiting the exemplary embodiments of the present utility model. It should also be understood that in the context, when referring to an element or feature being connected "on", "under", or "inside", "outside" of another element (one or more), it can not only be directly connected "on", "under", or "inside", "outside" of the other element (one or more), but also be indirectly connected "on", "under", or "inside", "outside" of the other element (one or more) through an intermediate element.

[0037] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this utility model will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. Like reference numerals in the figures denote the same or similar structures, and thus their detailed description will be omitted.

[0038] This embodiment provides a solenoid valve, as Figure 1 shown. The solenoid valve includes a valve body 1, a base 2, a valve stem 3, and a throttle member 4. A first valve cavity 15, a second valve cavity 16, and a valve port 17 are provided in the valve body 1. The first valve cavity 15 communicates with the second valve cavity 16 through the valve port 17. The throttle member 4 is of a spherical structure and can also be referred to as a steel ball. The throttle member 4 is disposed in the second valve cavity 16. The valve stem 3 is disposed in the first valve cavity 15 and can slide relative to the first valve cavity 15. The valve stem 3 passes through the valve port 17 and can abut against the throttle member 4 to selectively block the valve port 17 with the throttle member 4.

[0039] When the valve stem 3 moves relative to the valve body 1 in the direction approaching the valve port 17, the valve stem 3 can pass through the throttle port and abut against the throttle member 4, opening the valve port 17. At this time, the first valve chamber 15 communicates with the second valve chamber 16 through the valve port 17. When the valve stem 3 moves relative to the valve body 1 in the direction away from the valve port 17, the valve stem 3 does not push the throttle member 4, and the throttle member 4 blocks the valve port 17. At this time, the first valve chamber 15 and the second valve chamber 16 are isolated from each other. By controlling the moving distance of the valve stem 3, the position of the throttle member 4 relative to the valve port 17 is adjusted, so that the throttle member 4 can adjust or change the flow rate of the valve port 17.

[0040] In one embodiment, as Figure 1 shown, the solenoid valve further includes a first pipe 6 and a second pipe 7. The first pipe 6 communicates with the first valve chamber 15, and the second pipe 7 communicates with the second valve chamber 16. The medium in the second pipe 7 can enter the second valve chamber 16, and then enter the first valve chamber 15 through the valve port 17. The medium in the first valve chamber 15 is discharged through the first pipe 6.

[0041] In one embodiment, as Figure 1 shown, the solenoid valve further includes a first elastic member 5. The first elastic member 5 can be a cylindrical spring. An installation groove is provided on the side of the base 2 away from the riveting portion 11. The first elastic member 5 and the throttle member 4 are arranged in the installation groove. Along the axial direction of the valve body 1, one end of the first elastic member 5 abuts against the bottom of the installation groove, and the other side abuts against the throttle member 4.

[0042] When the valve stem 3 passes through the valve port 17 and pushes the throttle member 4, the throttle member 4 compresses the first elastic member 5, and the first elastic member 5 is in a compressed state; when the valve stem 3 moves away from the valve port 17 and disengages from the throttle member 4, the compressed first elastic member 5, under its own restoring force, the first elastic member 5 pushes the throttle member 4 in the direction approaching the valve port 17 for the throttle member 4 to reset, so that the throttle member 4 blocks the valve port 17.

[0043] In one embodiment, as Figure 1 shown, the solenoid valve further includes a gasket 8. The gasket 8 is arranged between the throttle member 4 and the first elastic member 5. The gasket 8 plays a role of intermediate isolation between the throttle member 4 and the first elastic member 5, avoiding repeated extrusion of the first elastic member 5 by the throttle member 4, resulting in an increase in the aperture of the first elastic member 5 and affecting the elastic force of the first elastic member 5.

[0044] In one embodiment, as Figure 1 shown, the solenoid valve further includes an armature 9, a conduit 10 and an attracting member 101. The conduit 10 is arranged in the valve body 1, and the attracting member 101 and the armature 9 are arranged in the conduit 10. The side of the armature 9 away from the attracting member 101 is connected to the valve stem 3. The attracting member 101 can attract the armature 9 after being energized, so that the armature 9 drives the valve stem 3 to move relative to the conduit 10.

[0045] As shown in the figure, the solenoid valve further includes a second elastic member 102 disposed between the attracting member 101 and the armature 9. The second elastic member 102 functions as a buffer to prevent the armature 9 from colliding with the attracting member 101 during the movement relative to the conduit 10.

[0046] In one embodiment, the solenoid valve further includes a shunt magnetic ring 103 disposed on one side of the attracting member 101 facing the armature 9.

[0047] The solenoid valve provided in this example can be an normally open solenoid valve. That is, when the solenoid valve is not powered on, the valve port 17 is in an open state, the first valve cavity 15 is communicated with the second valve cavity 16, the armature 9 is located at the lowest position under the action of the second elastic member 102, the elastic force of the second elastic member 102 is greater than the elastic force of the first elastic member 5, the lower end of the valve stem 3 abuts against the throttle member 4, and the throttle member 4 is pushed away from the valve port 17. After the solenoid valve is powered on, the attracting member 101 generates a magnetic force that can overcome the elastic force of the second elastic member 102, thereby attracting the armature 9 to move upward along the conduit 10. At the same time, the armature 9 drives the valve stem 3 to move upward. Without the pressure of the valve stem 3, the throttle member 4 will move upward under the action of the elastic force of the first elastic member 5 until the valve port 17 is closed.

[0048] Of course, in some other embodiments, the solenoid valve can also be an normally closed solenoid valve.

[0049] In the related art, internal threads are provided in the valve body 1, and external threads are provided on the outer wall of the base 2. The valve body 1 and the base 2 are connected by threads. Since internal and external threads need to be provided on both the valve body 1 and the base 2, certain wall thicknesses are required for both the valve body 1 and the base 2, resulting in relatively large wall thicknesses for the valve body 1 and the base 2. While increasing the material used for the valve body 1 and the base 2, it also increases the occupied space, which is not conducive to the requirements of miniaturization and lightweight of the solenoid valve.

[0050] To solve this problem, as Figure 2 shown, in the solenoid valve provided in this embodiment, the base 2 is coaxially arranged with the valve body 1. Among them, a riveting portion 11 is provided at the end of the valve body 1 along the axial direction of the valve body 1, so that the base 2 abuts against the inner wall of the base 2, and the base 2 and the valve body 1 are connected by welding.

[0051] Among them, the riveting portion 11 can be riveted by a riveting machine. The riveting machine is essentially a stamping machine device and a special connecting die, and uses the riveting machine to achieve an instantaneously strong high-pressure processing process. According to the cold extrusion deformation of the materials of the valve body 1 and the base 2 themselves, a stress-free concentrated internal inlaid dot with a certain tensile and shear strength is formed, and the side walls of the two-layer valve body 1 and the base 2 with different materials and different thicknesses can be connected.

[0052] During riveting, there are no requirements for the surface of the riveting part 11 of the valve body 1, and the original plating, paint layer, etc. on the surface of the riveting part 11 are not damaged. By riveting the riveting part 11, the valve body 1 and the base 2 can be connected through single-point or multi-point simultaneously, with a high degree of automation in the connection process and high production efficiency.

[0053] Among them, the base 2 and the valve body 1 are welded, for example, by soldering. Specifically, soldering is a welding method that uses a low-melting-point metal solder to heat, melt, penetrate, and fill the gap. The solder is often a tin-based alloy. After heating and melting the low-melting-point metal solder, it infiltrates and fills the gap between the base 2 and the valve body 1 for connecting the base 2 and the valve body 1.

[0054] For the solenoid valve provided in this embodiment, the base 2 and the valve body 1 are coaxially arranged to ensure the coaxiality between the base 2 and the valve body 1. After the base 2 is installed into the valve body 1, by riveting the riveting part 11, while ensuring that the base 2 does not move, the pressure resistance of the entire solenoid valve can also be ensured. After riveting, soldering is performed between the base 2 and the valve body 1 to ensure no leakage and sealing effect between the base 2 and the valve body 1.

[0055] Compared with the related technology, since there is no need to set threads between the base 2 and the valve body 1, the wall thickness of the base 2 and the valve body 1 can be appropriately reduced, reducing the use of materials for the base 2 and the valve body 1, lowering the cost of raw materials, and meeting the requirements of miniaturization and lightweight. By riveting through the riveting part 11, the strength can be ensured. The soldering between the base 2 and the valve body 1, such as soldering, has a relatively low temperature, which can reduce the change of stress and avoid the risk of deformation of the valve port 17 caused by thermal expansion and contraction, thereby ensuring no internal leakage of the product and improving the sealing effect.

[0056] In this application, after press-fitting between the base 2 and the valve body 1, riveting is performed through the riveting part 11 for fixation, and then further fixation is achieved through welding and sealing to improve the installation reliability.

[0057] In one embodiment, as Figure 2 shown, an installation hole 12 is provided at the center of the valve body 1, and the base 2 is arranged in the installation hole 12.

[0058] Since the installation hole 12 is provided at the center position of the valve body 1 and the installation hole 12 and the valve body 1 are coaxially arranged, by arranging the base 2 in the installation hole 12, the base 2 and the valve body 1 can be coaxially arranged to ensure the coaxiality after installation and assembly.

[0059] Exemplarily, the size of the installation hole 12 is slightly larger than that of the base 2, and the base 2 and the installation hole 12 of the valve body 1 are in clearance fit. By controlling the size of the installation hole 12 and its position relative to the valve body 1, the assembly accuracy between the base 2 and the valve body 1 can be ensured.

[0060] Among them, along the axial direction of the valve body 1, the length of the mounting hole 12 is greater than the length of the base 2.

[0061] In this way, after the base 2 is installed in the mounting hole 12, the base 2 is embedded in the mounting hole 12, and the base 2 will not be exposed outside the valve body 1, and the valve body 1 plays a role in protecting the base 2. At the same time, one side of the valve body 1 facing the base 2 protrudes relative to the base 2, and this protruding structure is the free end of the valve body 1, that is, this protruding structure is the riveting part 11. When riveting the riveting part 11, deformation of the base 2 will not occur, thereby improving the reliability of the entire solenoid valve.

[0062] In one embodiment, the projection of the riveting part 11 on the reference plane and the projection of the base 2 on the reference plane at least partially overlap; wherein, the reference plane is arranged parallel to the axial direction of the valve body 1.

[0063] Exemplarily, the riveting part 11 includes a coincident part and a non-coincident part. The projection of the coincident part of the riveting part 11 on the reference plane coincides with the projection of the base 2 on the reference plane. The coincident part is essentially the stressed part during the riveting process. By riveting the coincident part of the riveting part 11, the connection strength between the valve body 1 and the base 2 is increased; the projection of the non-coincident part of the riveting part 11 on the reference plane does not coincide with the projection of the base 2 on the reference plane. The non-coincident part is essentially an extended position of the coincident part, reserving the required margin for the coincident part during the riveting process, which is convenient for riveting operations.

[0064] In one embodiment, one of the inner wall of the valve body 1 and the outer wall of the base 2 is provided with a first limiting groove 13, and the other is provided with a limiting platform 21. The limiting platform 21 is arranged in the first limiting groove 13 for limiting between the valve body 1 and the base 2.

[0065] Exemplarily, a first limiting groove 13 is provided on the inner wall of the valve body 1. For example, the inner wall of the valve body 1 is recessed in a direction away from the base 2 to form the first limiting groove 13. A limiting platform 21 is provided on the outer wall of the base 2, and the limiting platform 21 protrudes in the direction towards the base 2 to form the limiting platform 21. When the base 2 is installed in the valve body 1, the limiting platform 21 and the first limiting groove 13 are abutted to play a role in limiting and initial positioning, and at the same time, it can also ensure that the base 2 will not move relative to the valve body 1 during the riveting process, thereby ensuring good riveting strength between the base 2 and the valve body 1.

[0066] In one embodiment, a first chamfer 22 is provided on one side of the base 2 facing the riveting part 11.

[0067] That is, a first chamfer 22 is provided at the end of the base 2. When the base 2 is installed into the valve body 1, the first chamfer 22 plays a guiding role, improving the convenience of installation between the base 2 and the valve body 1. When welding between the base 2 and the valve body 1, a receiving cavity is formed between the first chamfer 22 and the valve body 1. The receiving cavity can be used to hold a certain amount of solder. By using the first chamfer 22, the penetration depth of the welding can be ensured, thereby improving the welding strength between the base 2 and the valve seat.

[0068] Among them, the first chamfer 22 is of an annular structure, and the first chamfer 22 and the valve body 1 are coaxially arranged. That is, the weld between the base 2 and the valve body 1 is of an annular structure, further ensuring the coaxiality of the base 2 and the valve body 1 when the base 2 and the valve body 1 are welded.

[0069] If the size of the first chamfer 22 is relatively small, when the solder melts during welding, it is easy to overflow wantonly from the first chamfer 22, affecting the appearance quality of the base 2.

[0070] For this reason, a second limiting groove 23 is provided on one side of the base 2 facing the riveting part 11, and the second limiting groove 23 communicates with the first chamfer 22. By using the second limiting groove 23, the flowing position of the melted solder can be restricted, preventing the solder from overflowing to the surface of the base 2, thereby ensuring the overall aesthetic appearance of the solenoid valve.

[0071] In one embodiment, the second limiting groove 23 is of an annular structure, and the second limiting groove 23 and the valve body 1 are coaxially arranged.

[0072] Since the first chamfer 22 is of an annular structure, by setting the second limiting groove 23 to be of an annular structure and the second limiting groove 23 and the first chamfer 22 are correspondingly arranged, the coaxiality of the base 2 and the valve body 1 when the base 2 and the valve body 1 are welded is further ensured.

[0073] In one embodiment, along the axial direction of the valve body 1, a second chamfer 14 is provided on the outer wall of the end of the riveting part 11 away from the valve body 1. When the base 2 is installed into the valve body 1, the second chamfer 14 plays a guiding role, improving the convenience of installation between the base 2 and the valve body 1.

[0074] It should be noted here in the embodiments of the present utility model that only one example of adopting the principle of the present utility model is shown in the drawings and described in this specification. Those of ordinary skill in the art should clearly understand that the principle of the present utility model is not limited to any details of the device shown in the drawings or described in the specification or any component.

[0075] It should be understood that the present utility model does not limit its application to the detailed structures and arrangements of the components presented in this specification. The present utility model can have other embodiments and can be implemented and carried out in various ways. The foregoing variations and modifications fall within the scope of the present utility model. It should be understood that the present utility model disclosed and defined in this specification extends to all alternative combinations of two or more separate features mentioned or apparent in the text and / or drawings. All such different combinations constitute multiple alternative aspects of the present utility model. The embodiments described in this specification illustrate the best mode known for implementing the present utility model and will enable those skilled in the art to utilize the present utility model.

[0076] After considering the specification and practicing the creation disclosed herein, those skilled in the art will readily conceive of other embodiments of the present utility model. The present utility model is intended to cover any variations, uses, or adaptations of the present utility model that follow the general principles of the present utility model and include known common general knowledge or conventional technical means in the technical field not disclosed in the present utility model. The specification and the example embodiments are only regarded as exemplary, and the true scope and spirit of the present utility model are pointed out by the appended claims.

[0077] It should be understood that the present utility model is not limited to the precise structures already described and shown in the drawings and can be subjected to various modifications and changes without departing from its scope. The protection scope of the present utility model is only limited by the appended claims.

Claims

1. A solenoid valve, characterized in that, Comprising: Valve body (1); Base (2), arranged inside the valve body (1) and coaxially with the valve body (1); Wherein, at the end of the valve body (1) along the axial direction of the valve body (1), there is a riveting part (11), which makes the base (2) abut against the inner wall of the base (2), and the base (2) and the valve body (1) are connected by welding.

2. The solenoid valve according to claim 1, wherein, An installation hole (12) is arranged at the center of the valve body (1), and the base (2) is arranged inside the installation hole (12); Wherein, along the axial direction of the valve body (1), the length of the installation hole (12) is greater than the length of the base (2).

3. The solenoid valve according to claim 1, characterized in that, The projection of the riveting part (11) on the reference plane and the projection of the base (2) on the reference plane at least partially overlap; Wherein, the reference plane is arranged parallel to the axial direction of the valve body (1).

4. The solenoid valve according to claim 1, characterized in that, One of the inner wall of the valve body (1) and the outer wall of the base (2) is provided with a first limiting groove (13), and the other is provided with a limiting platform (21), and the limiting platform (21) is arranged inside the first limiting groove (13) for limiting between the valve body (1) and the base (2).

5. The solenoid valve according to claim 1, wherein One side of the base (2) facing the riveting part (11) is provided with a first chamfer (22).

6. The solenoid valve according to claim 5, characterized in that, One side of the base (2) facing the riveting part (11) is provided with a second limiting groove (23), and the second limiting groove (23) communicates with the first chamfer (22).

7. The solenoid valve according to claim 6, wherein, The first chamfer (22) is an annular structure, and the first chamfer (22) is coaxially arranged with the valve body (1); And / or, the second limiting groove (23) is an annular structure, and the second limiting groove (23) is coaxially arranged with the valve body (1).

8. The solenoid valve according to claim 1, wherein, Along the axial direction of the valve body (1), the outer wall of the end of the riveting part (11) far from the valve body (1) is provided with a second chamfer (14).

9. The solenoid valve according to claim 1, wherein, It further includes a valve stem (3) and a throttle member (4). Inside the valve body (1), there are a first valve cavity (15), a second valve cavity (16) and a valve port (17). The first valve cavity (15) communicates with the second valve cavity (16) through the valve port (17). The throttle member (4) is arranged in the second valve cavity (16). The valve stem (3) is arranged in the first valve cavity (15) and can slide relative to the first valve cavity (15). The valve stem (3) passes through the valve port (17) and can abut against the throttle member (4) to selectively block the valve port (17) by the throttle member (4).

10. The solenoid valve according to claim 9, wherein It further includes a first elastic member (5). An installation groove is arranged on one side of the base (2) far from the riveting part (11). The first elastic member (5) and the throttle member (4) are arranged in the installation groove. Along the axial direction of the valve body (1), one end of the first elastic member (5) abuts against the bottom of the installation groove, and the other side abuts against the throttle member (4).

Images