Silent electromagnetic valve

Abstract

The utility model discloses a mute type electromagnetic valve which comprises a valve seat, a valve body and a shell which are fixedly arranged, a port A is formed in the valve seat, a port B is formed in the valve body, the port B is communicated with the port A, a sealing plug is arranged on the valve body in a sliding mode, a silencing ring is arranged on the sealing plug in a sleeved mode, and a limiting piece used for limiting axial movement of the silencing ring is arranged on the sealing plug. The silencing ring is provided with a silencing end, an outer protruding ring is arranged at the bottom of one side of the silencing end, and the inner wall of the outer protruding ring can be tightly attached to the outer wall of a positioning ring located on the valve body. A damping end is arranged at the top of the other side of the silencing end and can abut against the shell. The utility model has the main beneficial effects that the design is exquisite, the damping end and the outer convex ring can play a role in damping, shock absorption and noise reduction, the situation of hard collision between the valve body and the sealing plug is avoided, the noise is reduced, and meanwhile, the service life is greatly prolonged.

Description

Technical Field

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

[0002] Solenoid valves are electromagnetically controlled industrial devices, serving as fundamental components for fluid control in automation. They are actuators, not limited to hydraulic or pneumatic systems, used in industrial control systems to adjust the direction, flow rate, speed, and other parameters of the medium. In the automotive industry, solenoid valves for electronically controlled shock absorbers are increasingly widely used. However, most solenoid valves have narrow damping adjustment ranges and poor damping effects. Furthermore, the complex structure of the damping control components not only results in higher costs but also more complex hydraulic circuits, leading to slower response times and lower accuracy.

[0003] For example, CN116181838A discloses a damping adjustable solenoid valve for a suspension system, including a damping valve assembly, a valve assembly, and an internal oil passage disposed within a housing. The damping valve assembly includes a damping valve system communicating with the internal oil passage. The valve assembly includes a valve body and a valve sleeve fitted onto the valve body. The valve body has an oil passage hole communicating with the internal oil passage, and the oil passage cross-sectional area of ​​the oil passage hole is adjustable to adjust the damping force. The valve sleeve has a groove, and the side wall of the valve body contacts the inner wall of the groove, and the inner wall of the groove can shield the oil passage hole. However, this solenoid valve has a complex structure and an unreasonable layout, making it unable to accurately isolate the oil passage hole in a timely manner, posing a risk of leakage. It has significant limitations and is not conducive to mass production. In addition, the collision between the valve body and the inner wall of the valve sleeve generates significant noise and is prone to damage, affecting its service life. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a silent solenoid valve.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A silent solenoid valve includes a fixedly mounted valve seat, valve body, and housing. The valve seat has an A port, and the valve body has a B port, which communicates with the A port. A sealing plug is slidably mounted on the valve body, and a silencing ring is fitted onto the sealing plug. The sealing plug has a limiting member for restricting the axial movement of the silencing ring. The silencing ring has a silencing end, and a protruding ring is provided at the bottom of one side of the silencing end. The inner wall of the protruding ring can be tightly fitted with the outer wall of a positioning ring located on the valve body. A damping end is provided at the top of the other side of the silencing end, and the damping end can abut against the housing.

[0007] Preferably, the limiting member includes at least a fixing ring integrally formed on the sealing plug, the silencing end is fixed on the fixing ring, the fixing ring is provided with a limiting protrusion, and the silencing end is provided with a limiting groove adapted to the limiting protrusion.

[0008] Preferably, the silencing end, the outer convex ring, and the damping end are integrally formed and are glued to the sealing plug.

[0009] Preferably, the sealing plug has a receiving cavity, and a return spring is provided in the receiving cavity. One end of the return spring abuts against the valve seat, and the other end abuts against the sealing plug.

[0010] Preferably, the housing is further provided with an electromagnetic component, which includes at least a coil frame disposed on the inner wall of the housing, a coil disposed therein, a front magnetic pole fixedly disposed on one side of the coil frame, an armature slidably disposed at the end of the front magnetic pole away from the sealing plug, a push rod fixedly disposed on the armature, and the push rod passing through the front magnetic pole and fixedly connected to the sealing plug.

[0011] Preferably, a sealing groove is formed on the inner wall of the front magnetic pole, and a sealing ring adapted to it is provided in the sealing groove, and the sealing ring is always in close contact with the sealing plug at least partially.

[0012] Preferably, a damping pad is also fixed on the side of the armature away from the front magnetic pole.

[0013] The beneficial effects of this utility model are mainly reflected in:

[0014] 1. The ingenious design, with its damping end and outer convex ring, effectively dampens vibrations and reduces noise, preventing hard collisions between the valve body and the sealing plug, thus reducing noise generation and significantly extending service life.

[0015] 2. When the sealing plug faces the valve seat and is in close contact with it, the silencing end is in close contact with the positioning ring, thus isolating port A and port B. At the same time, the inner wall of the outer convex ring is in close contact with the outer wall of the positioning ring, providing a secondary seal to ensure sealing performance and maximize the sealing effect, making it widely applicable. Furthermore, this sealing structure is ingenious, increasing the sealing effect without adding excessive costs, greatly reducing costs and facilitating mass production.

[0016] 3. The fixed ring can axially limit the silencer ring, preventing displacement or movement of the limit ring during the sealing process, thus improving the sealing performance. At the same time, the limit protrusion and limit groove can further limit the silencer ring axially, playing a double limiting role and maximizing the sealing performance. Attached Figure Description

[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0018] Figure 1 : A cross-sectional view of a preferred embodiment of this utility model;

[0019] Figure 2 : Figure 1 Enlarged view of section A. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] like Figures 1 to 2 As shown, this utility model discloses a silent solenoid valve, including a fixedly disposed valve seat 1, valve body 2, and housing 3. The valve seat 1 has an A port 11, and the valve body 2 has a B port 21, which are connected to the A port 11. In this preferred embodiment, a sealing plug 3 is slidably disposed on the valve body 2, and a silencing ring 4 is sleeved on the sealing plug 3. The silencing ring 4 has a silencing end 41, and a protruding ring 42 is provided at the bottom of one side of the silencing end 41. The inner wall of the protruding ring 42 can be tightly attached to the outer wall of the positioning ring 22 located on the valve body 2. A damping end 43 is provided at the top of the other side of the silencing end 41, and the damping end 43 can abut against the housing 3. The above design is ingenious. When the sealing plug faces the valve seat 1 and is in close contact with it, the silencing end 41 is in close contact with the positioning ring 22, thereby isolating port A 11 and port B 21. At the same time, the inner wall of the outer convex ring 42 is in close contact with the outer wall of the positioning ring 22, providing a secondary seal to ensure sealing performance and maximize the sealing effect, thus having wide applicability. In addition, the damping end and the outer convex ring can play a role in damping and shock absorption, preventing hard collisions between the valve body and the sealing plug, reducing noise generation, and also significantly extending service life.

[0024] In this preferred embodiment, the silencing end 41, the outer convex ring 42, and the damping end 43 are integrally formed and glued to the sealing plug 3. Of course, other methods can also be used to fix them to the sealing plug 3, all of which fall within the protection scope of this utility model, and will not be described in detail here.

[0025] Another key design feature of this invention is that the sealing plug 3 is provided with a limiting member to restrict the axial movement of the muffler ring 4. The limiting member includes at least a fixing ring 31 integrally formed on the sealing plug 3, and the muffler end 41 is fixed to the fixing ring 31. The fixing ring 31 has a limiting protrusion 32, and the muffler end 41 has a limiting groove 44 that matches the limiting protrusion 32. The fixing ring 31 axially limits the muffler ring, preventing displacement or movement during sealing and improving sealing performance. Simultaneously, the limiting protrusion 32 and the limiting groove 44 further axially limit the muffler ring, providing a double limiting effect and maximizing sealing performance.

[0026] The sealing plug 3 has a receiving cavity 34, and a return spring 35 is provided in the receiving cavity 34. One end of the return spring 35 abuts against the valve seat 1, and the other end abuts against the sealing plug 3. After the work is completed, the return spring 35 can be used to reset the valve, so as to facilitate the next processing and improve convenience.

[0027] In this embodiment, the housing 3 is further provided with an electromagnetic component 5. The electromagnetic component 5 includes at least a coil frame 51 disposed on the inner wall of the housing 3. A coil 52 is disposed within the coil frame 51. The function of the coil 52 is to generate a magnetic field. When current passes through the coil 21, electrons in the coil will form an electron flow, thereby generating a magnetic field. A front magnetic pole 53 is fixedly disposed on one side of the coil frame 51. An armature 54 is slidably disposed at the end of the front magnetic pole 53 away from the sealing plug 3. A push rod 55 is fixedly disposed on the armature 54. The push rod 55 passes through the front magnetic pole 53 and is fixedly connected to the sealing plug 3.

[0028] A sealing groove 56 is formed on the inner wall of the front magnetic pole 53, and a sealing ring 57 adapted to it is provided in the sealing groove 56. The sealing ring 57 is at least partially in close contact with the sealing plug 3 at all times. A damping pad 58 is also fixed on the side of the armature 54 away from the front magnetic pole 53. The damping pad 58 can play a role in shock absorption and damping, avoiding noise generation, and extending service life.

[0029] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0030] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. A silent solenoid valve, comprising a fixedly disposed valve seat (1), valve body (2), and housing (9), wherein the valve seat (1) has an A port (11) and the valve body (2) has a B port (21), the B port (21) and the A port (11) are connected, characterized in that: A sealing plug (3) is slidably provided on the valve body (2), and a silencing ring (4) is sleeved on the sealing plug (3). A limiting member is provided on the sealing plug (3) to restrict the axial movement of the silencing ring (4). The silencing ring (4) has a silencing end (41). A convex ring (42) is provided at the bottom of one side of the silencing end (41). The inner wall of the convex ring (42) can be tightly attached to the outer wall of the positioning ring (22) located on the valve body (2). A damping end (43) is provided at the top of the other side of the silencing end (41). The damping end (43) can abut against the housing (9).

2. The silent solenoid valve according to claim 1, characterized by: The limiting component includes at least a fixing ring (31) integrally formed on the sealing plug (3), the silencing end (41) is fixed on the fixing ring (31), the fixing ring (31) is provided with a limiting protrusion (32), and the silencing end (41) is provided with a limiting groove (44) that is adapted to the limiting protrusion (32).

3. The silent solenoid valve according to claim 2, characterized in that: The silencing end (41), the outer convex ring (42), and the damping end (43) are integrally formed and are glued to the sealing plug (3).

4. The silent solenoid valve according to claim 3, characterized in that: The sealing plug (3) has a receiving cavity (34) and a return spring (35) is provided in the receiving cavity (34). One end of the return spring (35) abuts against the valve seat (1) and the other end abuts against the sealing plug (3).

5. The silent solenoid valve according to claim 4, characterized in that: The housing (9) is also provided with an electromagnetic component (5). The electromagnetic component (5) includes at least a coil frame (51) disposed on the inner wall of the housing (9). A coil (52) is disposed inside the coil frame (51). A front magnetic pole (53) is fixedly disposed on one side of the coil frame (51). An armature (54) is slidably disposed at one end of the front magnetic pole (53) away from the sealing plug (3). A push rod (55) is fixedly disposed on the armature (54). The push rod (55) passes through the front magnetic pole (53) and is fixedly connected to the sealing plug (3).

6. The silent solenoid valve according to claim 5, characterized in that: A sealing groove (56) is provided on the inner wall of the front magnetic pole (53), and a sealing ring (57) adapted to it is provided in the sealing groove (56). The sealing ring (57) is always in close contact with the sealing plug (3) at least partially.

7. The silent solenoid valve according to claim 5, wherein: A damping pad (58) is also fixed on the side of the armature (54) away from the front magnetic pole (53).

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