Solenoid valve and method of manufacturing the same

Abstract

This invention relates to the field of control element technology, and in particular to a solenoid valve and its manufacturing method. The solenoid valve includes a valve body, a seal, and a mounting assembly. The valve body has a mounting side and a main flow channel extending through the mounting side. The seal has a first end and a second end. The first end has a sealing portion located within the main flow channel, and its outer wall is sealed to the main flow channel. The mounting assembly includes a mounting member connected to the valve body. One of the mounting side and the seal has a positioning groove, and the other has a positioning protrusion. The positioning groove and the positioning protrusion engage to form a positioning fit that makes the central axis of the main flow channel and the central axis of the seal coaxial. The mounting member presses against the second end, maintaining the positioning fit between the positioning protrusion and the positioning groove. This invention ensures good coaxiality between the main flow channel and the seal, and keeps the O-ring on the seal under uniform force.

Description

Technical Field

[0001] This invention relates to the field of control element technology, and in particular to a solenoid valve and its manufacturing method. Background Technology

[0002] Currently, in existing solenoid valves, the seal used to restrict the movement of the valve core is generally independently installed within the valve body's flow channel and fitted onto the outside of the valve core. Such a seal is typically connected to the valve core via a threaded connection. For example, in patent application CN119778506A, entitled "A Valve Core, Valve, and Method for Manufacturing the Valve Core," the valve core seal disclosed (the invention patent)... Figure 9 The component located outside the spring (the part in the middle) is connected to the valve body using a threaded connector. However, threaded connections inherently have clearance, and during axial adjustment of the seal, uneven force during tightening can cause the seal's central axis to deviate from the valve body's central axis, resulting in a significant misalignment between the seal's central axis and the central axis of the pre-set fluid passage within the valve body. This leads to uneven stress on the O-ring seal. Areas with higher local stress experience greater local compression, causing the O-ring seal to age and crack faster, thus reducing its lifespan. Conversely, areas with lower local stress experience less compression, or even insufficient compression, creating a fluid leakage channel that allows fluid to bypass the seal, leading to seal failure and ultimately affecting the solenoid valve's performance. Summary of the Invention

[0003] The purpose of this invention is to provide a solenoid valve and a method for manufacturing the solenoid valve, so as to solve the technical problem that it is difficult to ensure the coaxiality of the sealing element located in the main flow channel of the valve body relative to the main flow channel.

[0004] To achieve the above objectives, the present invention provides a solenoid valve, comprising: The valve body has an installation side, a main flow channel extending through the installation side, and a first direction parallel to the central axis of the main flow channel. A sealing element having a first end and a second end arranged opposite to each other, the first end having a sealing portion located within the main flow channel, and the outer wall of the sealing portion being sealed to the main flow channel. The mounting assembly includes a mounting member for winding a coil, and the mounting assembly is detachably connected to the valve body; One of the mounting side and the seal is provided with a positioning groove, and the other of the mounting side and the seal is provided with a positioning protrusion. The positioning groove and the positioning protrusion are connected to form a positioning fit that makes the central axis of the main flow channel and the central axis of the sealing part coaxial. The mounting member presses the second end to maintain the positioning fit between the positioning protrusion and the positioning groove.

[0005] Optionally, the mounting side is provided with the positioning groove, and the positioning groove communicates with the main flow channel and is arranged around the outer periphery of the main flow channel, and the circumferential axis of the positioning groove is coaxial with the central axis of the main flow channel; or, The sealing element is provided with the positioning groove, and the positioning groove is arranged around the central axis of the main flow channel.

[0006] Optionally, the outer side wall of the second end is provided with an abutting protrusion; the mounting side is provided with an abutting groove, and the abutting protrusion and the bottom of the abutting groove abut against each other along the first direction, or the abutting protrusion and the mounting side abut against each other along the first direction.

[0007] Optionally, the mounting side is provided with the positioning groove, the positioning groove is connected to the main flow channel and is arranged around the outer periphery of the main flow channel, and the abutment groove is arranged around the outer periphery of the positioning groove and is connected to the periphery of the positioning groove.

[0008] Optionally, the positioning protrusion and the abutting protrusion are arranged sequentially from the first end to the second end.

[0009] Optionally, the solenoid valve further includes a valve core and a stationary iron core. The stationary iron core is disposed within the mounting component, and the end face of the stationary iron core facing the second end has a core hole extending along the first direction. The sealing component has a first through hole extending along the first direction. The valve core passes through the first through hole and extends at least partially into the core hole, so that the stationary iron core at least partially separates the valve core and the mounting component.

[0010] Optionally, the first through hole includes a first hole segment and a second hole segment that are connected to each other. The first hole segment extends through to the end face of the first end, and the second hole segment extends through to the end face of the second end. The diameter of the first hole segment is smaller than the diameter of the second hole segment.

[0011] Optionally, there is a gap between the stationary iron core and the second end, or the end face of the stationary iron core along the first direction is flush with the end face of the second end, or the stationary iron core extends into the second hole segment.

[0012] Optionally, the mounting assembly further includes a mounting housing, which is mounted on the valve body and causes the mounting member to abut against the second end; The sealing element and the mounting element cooperate to form a communicating channel, which passes through the sealing element and the mounting element in the first direction and is connected to the main flow channel; furthermore, the solenoid valve also includes a valve core and a stationary iron core, the valve core being at least partially located within the communicating channel, one end of the stationary iron core along the first direction being fixed relative to the mounting housing, and the other end of the stationary iron core along the first direction being connected to the valve core through an elastic element, so that the elastic element can generate a force acting on the stationary iron core and the valve core along the first direction.

[0013] Optionally, the elastic element is a return spring, the sealing element has a first through hole extending along the first direction, the mounting element has a second through hole extending along the first direction, the first through hole and the second through hole are connected to form a communication channel, the valve core passes through the first through hole, the stationary iron core passes through the second through hole and is fixedly connected to the mounting housing, and the return spring is disposed in the communication channel.

[0014] Optionally, the mounting assembly further includes a mounting housing, which is detachably mounted on the valve body and forms a mounting cavity with the mounting side. The mounting member is disposed in the mounting cavity, and its two ends abut against the seal and the mounting cavity respectively along the first direction to fix the mounting member and the seal.

[0015] Optionally, the solenoid valve further includes a valve core and a stationary iron core. The sealing element has a first through hole that passes through the central axis of the main flow channel, and the mounting element has a second through hole that passes through the central axis of the main flow channel. The stationary iron core and the second through hole are connected in a mating manner. The valve core passes through the first through hole and is connected in a mating manner with it. The valve core and the stationary iron core are arranged opposite to each other.

[0016] Optionally, the outer wall of the mounting component is provided with a first positioning part protruding towards the cavity wall of the mounting cavity, and the cavity wall of the mounting cavity is provided with a second positioning part protruding towards the mounting component, wherein the first positioning part and the second positioning part are connected in cooperation.

[0017] Optionally, one of the second end and the mounting member is provided with a mating protrusion, and the other of the seal and the mounting member is provided with a mating groove. The mating protrusion and the mating groove are connected to make the seal and the mounting member mate with each other.

[0018] Optionally, the sealing element is provided with the mating protrusion, and the mounting element is provided with the mating groove. The mating protrusion is arranged around the first through hole, and the inner surface of the mating protrusion is in contact with the hole wall of the first through hole. The mating groove communicates with the second through hole and is arranged around the second through hole; or, The sealing element is provided with the mating groove, and the mounting element is provided with the mating protrusion. The mating groove is connected to the first through hole and is arranged around the first through hole. The mating protrusion is arranged around the second through hole, and the inner side of the mating protrusion is in contact with the hole wall of the second through hole.

[0019] Optionally, the sealing element has a first through hole extending along the first direction, the wall of the first through hole has a first vent hole extending to the outer wall of the sealing element, and the outer wall of the valve body and / or the outer wall of the mounting assembly has a second vent hole communicating with the first vent hole; and, The solenoid valve further includes a valve core and a stationary iron core, and the sealing element is provided with a first through hole extending along the first direction. The end face of the stationary iron core facing the second end is provided with a core hole extending along the first direction. A first exhaust gap is provided between the core hole and the valve core. A second exhaust gap is provided between the first through hole and the valve core. The stationary iron core is located outside the projection column of the first exhaust hole.

[0020] Optionally, the valve body is further provided with a first flow channel and a second flow channel, the first flow channel and the second flow channel being spaced apart in a first direction and connected to the periphery of the main flow channel; The main flow channel is provided with a sealed area between the first flow channel and the second flow channel, and the main flow channel has at least a first position and a second position; The solenoid valve further includes a valve core, the valve core having a sealing protrusion, and the valve core being configured to reciprocate between a first position and a second position on the main flow channel; and... When the valve core moves to the first position, the sealing protrusion forms a sealing fit with the sealing area to block the communication between the first flow channel and the second flow channel; When the valve core moves to the second position, the sealing protrusion disengages from the sealing area, so that the first flow channel communicates with the second flow channel.

[0021] The present invention also relates to a method for manufacturing the aforementioned solenoid valve, comprising the following steps: Select the valve body, the seal, and the mounting assembly, and wind a coil on the mounting part of the mounting assembly; The sealing part is inserted into the main flow channel, so that the outer wall of the sealing part and the main flow channel form a sealing fit; Align the positioning protrusion and the positioning groove; The mounting assembly is installed on the valve body, so that the mounting assembly and the valve body abut against the sealing element to form a solenoid valve.

[0022] Compared with the prior art, the advantages of the solenoid valve and its manufacturing method according to the present invention are as follows: In the solenoid valve of the present invention, the valve core can pass through the main flow channel of the valve body and move along its axial direction. The sealing part of the seal is inserted into the main flow channel of the valve body, and the outer wall of the sealing part is sealed to the main flow channel to prevent the medium from flowing between the outer wall of the sealing part and the main flow channel, thus realizing the function of a retainer. Further, the main flow channel extends to the mounting side, and the seal protrudes from the mounting side. One of the mounting side and the seal is provided with a positioning protrusion, and the other with a positioning groove. The positioning protrusion is inserted into the positioning groove to achieve a mating connection (which can be a clearance fit or an overfit), forming a positioning fit where the central axis of the main flow channel and the central axis of the seal are coaxial, thereby improving the coaxiality between the main flow channel and the seal, and thus ensuring uniform force on the O-ring seal on the seal. Further, when the mounting assembly is installed on the valve body, the mounting member for winding the coil in the mounting assembly and the valve body respectively abut against and press against the two sides of the seal from both sides along a first direction, applying a pressing force to both sides of the seal to fix the seal and maintain the positioning protrusion and positioning groove in the positioning fit position. In this way, the positioning protrusion and the positioning groove maintain a mating connection, so that the main flow channel and the sealing part maintain a positioning and mating connection, thereby ensuring good coaxiality between the main flow channel and the sealing part, and keeping the O-ring on the sealing part under uniform force. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the solenoid valve in one embodiment of the present invention.

[0024] Figure 2 This is a front view of the solenoid valve in one embodiment of the present invention.

[0025] Figure 3 This is a top view of the solenoid valve in one embodiment of the present invention.

[0026] Figure 4 for Figure 3 Sectional view of AA.

[0027] Figure 5 for Figure 4 A magnified view of part B in the middle.

[0028] Figure 6for Figure 3 Sectional view of AA (ignoring seals, valve core, mounting parts and stationary iron core).

[0029] Figure 7 This is a schematic diagram of the structure of the seal in one embodiment of the present invention.

[0030] Figure 8 This is a cross-sectional view of the seal in one embodiment of the present invention.

[0031] Figure 9 This is a schematic diagram of the valve body in one embodiment of the present invention.

[0032] Figure 10 This is a cross-sectional view of the solenoid valve in another embodiment of the present invention.

[0033] Figure 11 for Figure 10 A magnified view of part C in the middle.

[0034] Figure 12 This is a flowchart of a method for manufacturing a solenoid valve in one embodiment of the present invention.

[0035] Reference numerals: 1. Valve body; 11. Mounting side; 12. Main flow channel; 13. First flow passage; 14. Second flow passage; 15. Sealing area; 2. Seal; 21. First end; 22. Second end; 23. Sealing part; 24. First through hole; 241. First hole section; 242. Second hole section; 25. First vent hole; 3. Mounting assembly; 31. Mounting housing; 311. Connecting hole; 32. Mounting component; 321. Second through hole; 322, First positioning part; 4, Positioning protrusion; 5, Positioning groove; 6, Abutting protrusion; 7, Abutting groove; 8, Valve core; 81, Sealing protrusion; 9, Stationary iron core; 91, Core hole; 92, Reset hole; 10, Mounting cavity; 101, Second positioning part; 20, Butt joint protrusion; 30, Butt joint groove; 40, Second vent hole; 50, Reset spring; 60, First vent gap; 70, Second vent gap; 80, Connecting channel. Detailed Implementation

[0036] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0037] In the description of this invention, it should be understood that the terms "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] Example 1 Reference Figures 1 to 9 An electromagnetic valve includes a valve body 1, a sealing element 2, and a mounting assembly 3. The valve body 1 has a mounting side 11, and a main flow channel 12 extending through the mounting side 11 is provided inside the valve body 1. The valve body has a first direction parallel to the central axis of the main flow channel 12. The sealing element 2 has a first end 21 and a second end 22 arranged opposite to each other. The first end 21 has a sealing portion 23, which is located inside the main flow channel 12, and the outer wall of the sealing portion 23 is sealed to the main flow channel 12. The mounting assembly 3 includes a mounting member 32 for winding a coil, and the mounting assembly 3 is detachably connected to the valve body 1. The mounting side 11 has a positioning groove 5, and the sealing element 2 has a positioning protrusion 4. The positioning groove and the positioning protrusion are engaged to form a positioning engagement that makes the central axis of the main flow channel and the central axis of the sealing portion coaxial. The mounting member 32 presses against the second end 22, so that the positioning protrusion 4 and the positioning groove 5 maintain the positioning engagement.

[0040] In the above technical solution, the valve core 8 can pass through the main flow channel 12 of the valve body 1 and move along its axial direction. The sealing part 23 of the sealing element 2 is inserted into the main flow channel 12 of the valve body 1. The outer wall of the sealing part 23 and the main flow channel 12 are sealed together to prevent the medium from flowing between the outer wall of the sealing part 23 and the main flow channel 12, thus realizing the function of a retainer. Further, the main flow channel 12 extends to the mounting side 11, and the sealing element 2 extends out of the mounting side 11. One of the mounting side 11 and the sealing element 2 is provided with a positioning protrusion 4, and the other is provided with a positioning groove 5. The positioning protrusion 4 can be inserted into the positioning groove 5 to achieve a mating connection. Specifically, it can be a clearance fit or an overfit. Such a mating connection forms a positioning fit in which the central axis of the main flow channel 12 and the central axis of the sealing part 23 are coaxial, which can improve the coaxiality between the main flow channel 12 and the sealing part 23, thereby making the O-ring on the sealing part 23 bear force evenly. Furthermore, when the mounting assembly 3 is installed on the valve body 1, the mounting member 32 for winding the coil in the mounting assembly 3 and the valve body 1 respectively abut against and press against the two sides of the seal 2 from both sides along the first direction, applying a pressing force to both sides of the seal 2 to fix the seal 2 and keep the positioning protrusion 4 and the positioning groove 5 in the positioning engagement position. In this way, the positioning protrusion 4 and the positioning groove 5 maintain a mating connection, so that the main flow channel 12 and the sealing part 23 maintain a positioning and mating connection, thereby ensuring good coaxiality between the main flow channel 12 and the sealing part 23, and keeping the O-ring on the sealing part 23 under uniform force.

[0041] Specifically, the side of the seal 2 that is pressed by the mounting assembly 3 can be the end face of the second end 22, or the side of any protrusion provided on the outer surface of the seal 2, as long as the mounting assembly 3 can apply a pressing force toward the valve body 1 to the seal 2 along the first direction on that side; the side of the seal 2 that is pressed by the valve body 1 can be the end face of the first end 21, or the side of the positioning protrusion 4, or the side of any other protrusion provided on the outer surface of the seal 2, as long as the valve body 1 can apply a pressing force toward the mounting assembly 3 to the seal along the first direction on that side.

[0042] Furthermore, the above technical solution does not limit the shape of the positioning groove 5 and the positioning protrusion 4. The positioning groove 5 and the positioning protrusion 4 can be rectangular blocks, trapezoidal blocks, annular blocks, circular blocks, etc., as long as the shape of a portion of the positioning groove 5 and a portion of the positioning protrusion 4 perpendicular to the first direction is compatible when the positioning protrusion 4 is inserted into the positioning groove 5. In this way, the gap between the positioning groove 5 and the positioning protrusion 4 is small, allowing them to slide relative to each other along the first direction, thus achieving the function of positioning the sealing part 23 and the main flow channel 12.

[0043] Furthermore, the outer wall of the sealing part 23 is provided with a sealing groove, and a sealing ring is provided in the sealing groove, so that the outer wall of the sealing part 23 can be sealed to the main flow channel 12.

[0044] In addition, the mounting component 32 is the skeleton of the coil component, and the coil is wound around the outside of the mounting component 32.

[0045] In addition, coaxiality refers to the degree to which the central axes of two components coincide. Two components that meet certain coaxiality requirements can be considered coaxially arranged or coaxially configured. Specifically, the coaxiality between two coaxially arranged or coaxially configured components should be less than 0.1 mm.

[0046] As an example of this embodiment, refer to Figures 4 to 6 and Figure 9 The positioning groove 5 is connected to the main flow channel 12 and is arranged around the outer periphery of the main flow channel 12, with the circumferential axis of the positioning groove 5 coaxial with the central axis of the main flow channel 12. This arrangement of the positioning groove 5 and the main flow channel 12 simplifies the manufacturing process of the valve body 1, as the positioning groove 5 can be easily manufactured after the main flow channel 12 is produced. Furthermore, it facilitates the insertion of the positioning protrusion 4 into the positioning groove 5, further improving the accuracy and efficiency of the seal 2 installation on the valve body 1. Additionally, the positioning groove 5 can be an annular groove surrounding the upper edge of the main flow channel 12, and the positioning protrusion 4 can be an annular protrusion fixedly fitted onto the outer side of the seal 2.

[0047] As an example of this embodiment, refer to Figures 4 to 8 The outer wall of the second end 22 is provided with an abutting protrusion 6; the mounting side 11 is provided with an abutting groove 7, and the bottom of the abutting protrusion 6 and the groove 7 abut against each other along the first direction. The solenoid valve of this embodiment is not limited to the above-described example; in some solenoid valve structures, the abutting protrusion 6 and the mounting side 11 abut against each other along the first direction. The abutting protrusion 6 is specifically designed to position the seal 2 along the first direction, such that the positioning protrusion 4 and the abutting protrusion 6 are responsible for the mating connection and axial limiting of the seal 2, respectively. At this point, the shapes of the positioning protrusion 4 and the abutment protrusion 6 can be set separately. The outer diameter of the positioning protrusion 4 is designed according to the inner wall size of the main flow channel 12, which avoids the outer diameter of the positioning protrusion 4 being too large and affecting its assembly. The shape of the side of the abutment protrusion 6 that contacts the mounting side 11 or the bottom of the abutment groove 7 can be designed according to the shape of the mounting side 11 or the bottom of the abutment groove 7, so that there is a larger contact area between the seal 2 and the valve body 1, thereby reducing the pressure on the seal 2 and the valve body 1. The combination of the positioning protrusion 4 and the abutment protrusion 6 can ensure the coaxiality of the seal 2 and the main flow channel 12, and also ensure that the side of the seal 2 that abuts the valve body 1 will not be crushed.

[0048] As an example of this embodiment, refer to Figures 4 to 6 and Figure 9 The positioning groove 5 is connected to the main flow channel 12 and is arranged around the outer periphery of the main flow channel 12. The abutment groove 7 is arranged around the outer periphery of the positioning groove 5 and is connected to the periphery of the positioning groove 5. This arrangement of the positioning groove 5, abutment groove 7, and main flow channel 12 simplifies the manufacturing process of the valve body 1, as the positioning groove 5 and abutment groove 7 can be easily and quickly manufactured after the main flow channel 12 is manufactured. Specifically, a shallow groove can be machined on the mounting side 11, and then a deeper groove can be machined at the bottom of the shallow groove; alternatively, a deeper groove can be machined first on the mounting side 11, and then a shallower groove can be machined on the mounting side 11. Furthermore, when the operator inserts the positioning protrusion 4 into the positioning groove 5, the abutment protrusion 6 is also inserted into the abutment groove 7, which further improves the accuracy and efficiency of installing the seal 2 on the valve body 1. In addition, the abutting groove 7 can be an annular groove surrounding the upper edge of the positioning groove 5, and the abutting protrusion 6 can be an annular protrusion fixedly sleeved on the outside of the seal 2.

[0049] As an example of this embodiment, the positioning protrusion 4 and the abutting protrusion 6 are arranged sequentially from the first end 21 to the second end 22. In this case, the outer diameter of the abutting protrusion 6 is larger than the outer diameter of the positioning protrusion 4, and the outer surface area of ​​the positioning protrusion 4, which requires higher machining accuracy, is smaller, resulting in lower machining costs.

[0050] In other embodiments, the positioning protrusion 4 and the abutting protrusion 6 are arranged sequentially from the second end 22 to the first end 21. In this case, the outer diameter of the abutting protrusion 6 is smaller than the outer diameter of the positioning protrusion 4, and the outer surface area of ​​the positioning protrusion 4, which requires higher machining accuracy, is larger, resulting in higher machining costs.

[0051] As an example of this embodiment, refer to Figures 4 to 6The solenoid valve further includes a valve core 8 and a stationary iron core 9. The stationary iron core 9 is disposed within the mounting member 32, and the end face of the stationary iron core 9 facing the second end 22 has a core hole 91 extending along the first direction. The sealing member 2 has a first through hole 24 extending along the first direction. The valve core 8 passes through the first through hole 24 and at least partially extends into the core hole 91, so that the stationary iron core 9 at least partially separates the valve core 8 and the mounting member 32. For conventional solenoid valves, after long-term use, the mounting member 32 on which the coil is wound may undergo thermal deformation, thereby affecting the movement of the valve core 8. In this application, when the valve core 8 is inserted into the core hole 91, the stationary iron core 9 is partially sleeved on the outside of the valve core 8 to at least partially separate the valve core 8 and the mounting member 32, reducing the area of ​​the area where the valve core 8 and the mounting member 32 are directly opposite each other, thereby reducing the risk of thermal deformation of the mounting member 32 affecting the movement of the valve core 8.

[0052] Specifically, there may be a gap between the stationary iron core 9 and the second end 22 to partially separate the valve core 8 and the mounting member 32; the end face of the stationary iron core 9 facing the second end 22 may be flush with the end face of the second end 22 to completely separate the valve core 8 and the mounting member 32; the stationary iron core 9 may also extend into the first through hole 24 to completely separate the valve core 8 and the mounting member 32. Further, the stationary iron core 9 may be connected to the first through hole 24; the stationary iron core 9 may also be coaxially arranged with the sealing member 2, thereby improving the coaxiality of the stationary iron core 9 and the valve core 8, reducing eccentric friction generated during the movement of the valve core 8, reducing coil energy consumption and the risk of overheating, and ensuring that the valve core 8 has a fast and stable response speed. Furthermore, when the stationary iron core 9 and the sealing element 2 are made of the same material, the stationary iron core 9 can also be directly connected to the first through hole 24. This can reduce magnetic resistance and reduce magnetic leakage, thereby improving the magnetic field utilization rate and allowing more magnetic field to be used to attract the valve core 8, thus significantly improving the effective magnetic field strength.

[0053] As an example of this embodiment, refer to Figures 4 to 6 The first through hole 24 includes a first hole segment 241 and a second hole segment 242 that are connected. The first hole segment 241 extends to the end face of the first end 21, and the second hole segment 242 extends to the end face of the second end 22. The diameter of the first hole segment 241 is smaller than the diameter of the second hole segment 242. The first hole segment 241 is used for sealing the connection between the seal 2 and the valve core 8 to prevent the medium from flowing from the main flow channel 12 to the second end 22. The outer surface of the valve core 8 may be provided with a sealing groove, and a sealing ring is provided in the sealing groove to seal the connection between the seal 2 and the valve core 8. The second hole segment 242 is used to partially accommodate the stationary iron core 9, allowing the stationary iron core 9 to extend into the second hole segment 242.

[0054] As an example of this embodiment, refer to Figures 4 to 6 There is a gap between the stationary iron core 9 and the second end 22. The solenoid valve of this embodiment is not limited to the above-described example. In some solenoid valve structures, the end face of the stationary iron core 9 facing the second end 22 is flush with the end face of the second end 22 to completely separate the valve core 8 and the mounting member 32; in other solenoid valve structures, the stationary iron core 9 extends into the second hole section 242 to completely separate the valve core 8 and the mounting member 32, and allows the stationary iron core 9 to be connected to the second hole section 242.

[0055] As an example of this embodiment, refer to Figures 1 to 6 The mounting assembly 3 further includes a mounting housing 31, which is mounted on the valve body 1, and the mounting member 32 abuts against the second end 22. The sealing member 2 and the mounting member 32 cooperate to form a communicating channel 80, which passes through the sealing member 2 and the mounting member 32 in the first direction and is connected to the main flow channel 12. Furthermore, the solenoid valve also includes a valve core 8 and a stationary iron core 9. The valve core 8 is at least partially located within the communicating channel 80. One end of the stationary iron core 9 along the first direction is fixed relative to the mounting housing 31, and the other end of the stationary iron core 9 along the first direction is connected to the valve core 8 via an elastic element, allowing the elastic element to generate a force acting on the stationary iron core 9 and the valve core 8 along the first direction. The elastic element can apply a force along the first direction to the valve core 8, causing the valve core 8 to move along the first direction. When the stationary iron core 9 applies a force to the valve core 8, the valve core 8 moves along one side of the first direction, at which point the elastic element deforms (is compressed or stretched). Then, the stationary iron core 9 stops applying force to the valve core 8, the elastic element recovers its deformation, and applies a corresponding force to the valve core 8, enabling it to move along the other side of the first direction and return to its original position, thus achieving the reset function. Furthermore, since the force applied by the elastic element acts directly on the stationary iron core 9 and the valve core 8, and not directly on the mounting component 32, the elastic element does not directly exert thrust on the mounting component 32, the seal 2, and the valve body 1 during operation. This effectively reduces the impact of the elastic element's operation on the mounting component 32 and the valve body 1 pressing against the seal 2, thereby increasing the stability of the positioning protrusion 4 and the positioning groove 5 in maintaining the positioning fit.

[0056] In some embodiments, the elastic element is a return spring 50, the sealing element 2 is provided with a first through hole 24 extending along the first direction, the mounting element 32 is provided with a second through hole 321 extending along the first direction, the first through hole 24 and the second through hole 321 are connected to form a communication channel 80, the valve core 8 passes through the first through hole 24, the stationary iron core 9 passes through the second through hole 321 and is fixedly connected to the mounting housing 31, and the return spring 50 is disposed in the communication channel 80.

[0057] As an example of this embodiment, the valve body 1 also includes a moving iron core (not shown in the figure). The moving iron core is fixedly disposed at one end of the valve core 8 facing the bottom of the core hole 91 and is coaxially disposed with the valve core 8 so that the stationary iron core 9 can attract the moving iron core.

[0058] In some embodiments, the two ends of the return spring 50 are connected to the bottom of the moving iron core and the core hole 91, respectively.

[0059] In some embodiments, reference is made to Figures 4 to 6 The bottom of the core hole 91 can be provided with a reset hole 92. One end of the reset spring 50 is inserted into the reset hole 92 and connected to the bottom of the reset hole 92, and the other end extends out of the reset hole 92 and is connected to the moving iron core, so as to reduce the distance between the moving iron core and the stationary iron core 9.

[0060] As an example of this embodiment, refer to Figures 1 to 6 The mounting assembly 3 further includes a mounting housing 31, which is detachably mounted to the valve body 1 and forms a mounting cavity 10 with the mounting side 11. A mounting member 32 is disposed in the mounting cavity 10, with both ends of the mounting member 32 abutting against the seal 2 and the mounting cavity 10 along the first direction to fix the mounting member 32 and the seal 2. Specifically, the mounting member 32 is first placed inside the mounting housing 31, which is detachably mounted to the valve body 1 from the direction away from the mounting side 11 to the direction closer to the mounting side 11. When the mounting housing 31 is mounted to the valve body 1, the mounting housing 31 and the valve body 1 form the mounting cavity 10, generating a pressing force on the mounting member 32 towards the mounting side 11. This force is transmitted to the mounting member 32 through the cavity surface of the mounting cavity 10, causing the mounting member 32 to press the seal 2 towards the valve body 1 along the first direction at the second end 22 of the seal 2. At this time, the two ends of the mounting part 32 are squeezed by the mounting cavity 10 and the seal 2 respectively, while the two sides of the seal 2 are squeezed by the mounting part 32 and the valve body 1 respectively, so that the mounting part 32 and the seal 2 are fixed.

[0061] As an example of this embodiment, refer to Figures 4 to 6The solenoid valve further includes a valve core 8 and a stationary iron core 9. The sealing member 2 has a first through hole 24 extending along the central axis of the main flow channel 12, and the mounting member 32 has a second through hole 321 extending along the central axis of the main flow channel 12. The stationary iron core 9 and the second through hole 321 are connected. The valve core 8 passes through the first through hole 24 and is connected thereto. The valve core 8 and the stationary iron core 9 are arranged opposite to each other. The first through hole 24 and the second through hole 321 are coaxially arranged. The valve core 8 and the first through hole 24 are coaxially arranged, and the stationary iron core 9 and the second through hole 321 are also coaxially arranged, which gives the valve core 8 and the stationary iron core 9 a high degree of coaxiality. This reduces the eccentric friction generated when the valve core 8 moves, reduces coil energy consumption and the risk of overheating, and ensures that the valve core 8 has a fast and stable response speed.

[0062] As an example of this embodiment, refer to Figure 4 and Figure 6 The outer surface of the mounting housing 31 is provided with a connecting hole 311 that extends into the mounting cavity 10. The connecting hole 311 is provided corresponding to the second through hole 321. One end of the stationary iron core 9 extends out of the second through hole 321, and the other end is threaded to the connecting hole 311, so that the stationary iron core 9 and the mounting housing 31 are fixedly connected.

[0063] As an example of this embodiment, refer to Figure 4 and Figure 6 The outer wall of the mounting component 32 protrudes towards the cavity wall of the mounting cavity 10, and the cavity wall of the mounting cavity 10 protrudes towards the mounting component 32, with the first positioning part 322 and the second positioning part 101 cooperating and connecting. The mounting component 32 and the mounting cavity 10 are coaxially arranged through the first positioning part 322 and the second positioning part 101, so that when the mounting assembly 3 is installed on the valve body 1, adjusting the position of the mounting housing 31 radially along the seal 2 allows the mounting component 32 to move synchronously with the mounting housing 31, thereby synchronously adjusting the position of the mounting component 32 and its internal stationary iron core 9, and thus improving the coaxiality of the stationary iron core 9 and the valve core 8.

[0064] As an example of this embodiment, the first positioning part 322 is provided at the end of the mounting member 32 away from the sealing member 2, and the end face of the first positioning part 322 abuts against the cavity surface of the mounting cavity 10, so as to facilitate the processing and manufacturing of the mounting member 32 and the installation of the mounting member 32 in the mounting cavity 10.

[0065] As an example of this embodiment, refer to Figures 4 to 7The second end 22 has a mating protrusion 20 on its end face, and the mounting member 32 has a mating groove 30. The mating protrusion 20 and the mating groove 30 are connected to each other so that the sealing member 2 and the mounting member 32 are in contact. Specifically, the mating protrusion 20 and the mating groove 30 can be chamfered or rounded so that the mating protrusion 20 is guided by the chamfer or rounded corner when inserted into the mating groove 30, thereby allowing the mounting member 32 and the sealing member 2 to be in contact. There can be a gap between the walls of the mating protrusion 20 and the groove 30 to ensure the smooth insertion of the mating protrusion 20 into the groove 30. Furthermore, when the position of the mounting housing 31 is adjusted excessively along the radial direction of the sealing member 2, the groove wall of the mating groove 30 can abut against the mating protrusion 20 to prevent the stationary iron core 9 and the valve core 8 from excessively shifting, so that the operator knows that the position cannot be further adjusted in the previous direction, thereby improving the efficiency of position adjustment and debugging. Additionally, the side of the mating protrusion 20 can abut against the bottom of the mating groove 30, so that the mounting member 32 is pressed against the sealing member 2. The solenoid valve of this embodiment is not limited to the above-described example. In some solenoid valve structures, the second end 22 is provided with a mating groove 30, and the mounting member 32 is provided with a mating protrusion 20.

[0066] In an embodiment where the sealing member 2 is provided with the mating protrusion 20 and the mounting member 32 is provided with the mating groove 30, refer to... Figures 4 to 7 The mating protrusion 20 is arranged around the first through hole 24, and the inner surface of the mating protrusion 20 is in contact with the hole wall of the first through hole 24. The mating groove 30 communicates with the second through hole 321 and is arranged around the second through hole 321. Both the mating protrusion 20 and the mating groove 30 have annular structures, allowing them to abut against each other along the radial directions of the seal 2, preventing excessive radial displacement of the stationary iron core 9, valve core 8, and seal 2. Furthermore, after machining the first through hole 24, the mating protrusion 20 can be easily machined, and after machining the second through hole 321, the mating groove 30 can be easily machined, simplifying the manufacturing process of the seal 2 and the mounting component 32.

[0067] In an embodiment where the sealing element 2 is provided with the mating groove 30 and the mounting element 32 is provided with the mating protrusion 20, the mating groove 30 communicates with the first through hole 24 and is arranged around the first through hole 24. The mating protrusion 20 is arranged around the second through hole 321, and the inner surface of the mating protrusion 20 is in contact with the hole wall of the second through hole 321. Both the mating protrusion 20 and the mating groove 30 have an annular structure, allowing them to abut against each other along the radial directions of the sealing element 2, preventing excessive radial displacement of the stationary iron core 9, the valve core 8, and the sealing element 2. Furthermore, after machining the first through hole 24, the mating groove 30 can be easily machined; after machining the second through hole 321, the mating protrusion 20 can be easily machined, simplifying the manufacturing process of the sealing element 2 and the mounting element 32.

[0068] As an example of this embodiment, refer to Figures 4 to 9 The sealing element 2 is provided with a first through hole 24 extending along the first direction. The wall of the first through hole 24 is provided with a first vent hole 25 extending to the outer wall of the sealing element 2. The outer wall of the valve body 1 is provided with a second vent hole 40 communicating with the first vent hole 25. The gas flow generated when the valve core 8 moves can flow out from the first vent hole 25 and the second vent hole 40 to prevent the valve core 8 from being affected by air resistance, thereby reducing the response speed and movement speed of the valve core 8. In addition, in the prior art, vent holes are generally provided on the valve core 8 and the stationary iron core 9. The vent hole with such a vent hole has a slow venting speed and is difficult to process. In this embodiment, the first vent hole 25 and the second vent hole 40 are respectively provided on the sealing element 2 and the valve body 1, which is simple to process, has a fast venting speed, and generates less noise. In addition, the second vent hole 40 can be a groove provided on the mounting side 11, which communicates with the abutment groove 7 and the outer side of the sealing element 2. The solenoid valve of this embodiment is not limited to the above-described example. In some solenoid valve structures, the outer side wall of the mounting assembly 3 is provided with a second vent 40 that communicates with the first vent 25. In other solenoid valve structures, both the outer side wall of the valve body 1 and the outer side wall of the mounting assembly 3 are provided with a second vent 40 that communicates with the first vent 25. The second vent 40 can be formed by the valve body 1 and the mounting assembly 3, or the second vent 40 can be provided on the valve body 1 and the mounting assembly 3 respectively.

[0069] In an embodiment where the solenoid valve further includes a valve core 8 and a stationary iron core 9, and the sealing member 2 is provided with a first through hole 24 extending along the first direction, and the end face of the stationary iron core 9 facing the second end 22 is provided with a core hole 91 extending along the first direction, refer to... Figures 4 to 6A first exhaust gap 60 is provided between the core hole 91 and the valve core 8, and a second exhaust gap 70 is provided between the first through hole 24 and the valve core 8. The stationary iron core 9 is located outside the projected column of the first exhaust hole 25. When the valve core 8 moves along its axial direction, the space between the valve core 8 and the bottom of the core hole 91 changes. This space change allows gas to flow through the first exhaust gap 60, the second exhaust gap 70, the first exhaust hole 25, and the second exhaust hole 40, thereby ensuring the stability of the internal air pressure, reducing the air resistance encountered by the valve core 8, and ensuring the smooth movement of the valve core 8. In addition, the "outer side" of the projected column of the first exhaust hole 25 specifically refers to the side of the first exhaust hole 25 closer to the second end 22, to prevent the stationary iron core 9 from obstructing the first exhaust hole 25. Furthermore, the "projected column" of the first exhaust hole 25 refers to the column formed by moving the inner wall contour of the first exhaust hole 25 parallel to the central axis of the first exhaust hole 25.

[0070] As an example of this embodiment, refer to Figures 4 to 6 The valve body 1 further includes a first flow channel 13 and a second flow channel 14, which are spaced apart in a first direction and connected to the periphery of the main flow channel 12. The main flow channel 12 has a sealing region 15 located between the first flow channel 13 and the second flow channel 14, and has at least a first position and a second position. The solenoid valve also includes a valve core 8, which has a sealing protrusion 81. The valve core 8 is configured to reciprocate between the first and second positions of the main flow channel 12. When the valve core 8 moves to the first position, the sealing protrusion 81 forms a sealing fit with the sealing region 15 to block the communication between the first flow channel 13 and the second flow channel 14. When the valve core 8 moves to the second position, the sealing protrusion 81 disengages from the sealing region 15, allowing the first flow channel 13 to connect with the second flow channel 14. The valve body 1, through the movement of the valve core 8, has the function of opening and closing the flow channels. Furthermore, after the valve core 8 is moved to the first position by force, the valve core 8 will continue to be subjected to force, so that the sealing protrusion 81 continues to press on the sealing area 15 to continuously block the connection between the two channels. The valve core 8 can be subjected to force by magnetic force or mechanical pulling force. After the valve core 8 is moved to the second position by force, it is not restricted whether the valve core 8 continues to be subjected to force, and the first flow channel and the second flow channel can be connected.

[0071] Reference Figure 12As shown, this embodiment also relates to a manufacturing method of the aforementioned solenoid valve, comprising the following steps: Step 1, selecting the valve body 1, the sealing element 2, and the mounting assembly 3, and winding a coil on the mounting part 32 of the mounting assembly 3; Step 2, inserting the sealing part 23 into the main flow channel 12, so that the outer wall of the sealing part 23 and the main flow channel 12 form a sealing fit; Step 3, aligning the positioning protrusion 4 and the positioning groove 5; Step 4, installing the mounting assembly 3 onto the valve body 1, so that the mounting part and the valve body 1 abut against the sealing element 2, forming a solenoid valve.

[0072] The above technical solution provides a convenient method for manufacturing a solenoid valve. The manufacturing process involves four steps: selecting components, inserting the sealing part 23, aligning, and connecting. This method is convenient, quick, and efficient. Solenoid valves manufactured using this method exhibit high coaxiality between the main flow channel 12 and the sealing part 23, with minimal coaxiality deviation. Furthermore, the sealing ring on the sealing part 23 does not suffer from uneven localized stress.

[0073] As an example of this embodiment, the connection between two components refers to a clearance fit or an overfit; specifically, the dimensional tolerance between the two components in the connection can be ±0.05mm.

[0074] As an example of this embodiment, fixed setting and fixed connection refer to the fixed relative positional relationship of two components, including but not limited to fixing by connectors, fixing by welding, fixing by adhesive, fixing by integral molding, and fixing by snap-fit ​​connection.

[0075] As an example of this embodiment, a detachable connection refers to the ability of two components to be repeatedly assembled and disassembled, including but not limited to fixing with connectors, snap-fit ​​connections, pin connections, slot connections, sleeve connections, retaining ring connections, tenon and mortise connections, magnetic connections, and wedge connections.

[0076] As an example of this embodiment, the connectors include, but are not limited to, fasteners, pins, straps, chains, ropes, hooks, pins, rivets, cords, gas-liquid connection elements, flanges, webbing, Velcro, and buttons.

[0077] Example 2 The difference between this second embodiment and the first embodiment is that, referring to... Figure 10 and 11As shown, a solenoid valve includes a valve body 1, a sealing element 2, and a mounting assembly 3. The valve body 1 has a mounting side 11, and a main flow channel 12 extending through the mounting side 11 is provided inside the valve body 1. The valve body has a first direction parallel to the central axis of the main flow channel 12. The sealing element 2 has a first end 21 and a second end 22 arranged opposite to each other. The first end 21 has a sealing portion 23, which is located inside the main flow channel 12, and the outer wall of the sealing portion 23 is sealed to the main flow channel 12. The mounting assembly 3 includes a mounting member 32 for winding a coil, and the mounting assembly 3 is detachably connected to the valve body 1. The mounting side 11 has a positioning protrusion 4, and the sealing element 2 has a positioning groove 5. The positioning groove and the positioning protrusion are engaged to form a positioning engagement that makes the central axis of the main flow channel and the central axis of the sealing portion coaxial. The mounting member 32 presses against the second end 22, so that the positioning protrusion 4 and the positioning groove 5 maintain the positioning engagement.

[0078] As an example of this embodiment, refer to Figure 10 and 11 As shown, the positioning groove 5 is arranged around the central axis of the main flow channel 12.

[0079] In summary, the embodiments of the present invention provide a solenoid valve and a method for manufacturing the same, the technical effects of which are as follows: In the solenoid valve of the present invention, the valve core 8 can pass through the main flow channel 12 of the valve body 1 and move along its axial direction. The sealing part 23 of the sealing member 2 is inserted into the main flow channel 12 of the valve body 1. The outer wall of the sealing part 23 and the main flow channel 12 are sealed together to prevent the medium from flowing between the outer wall of the sealing part 23 and the main flow channel 12, thus realizing the function of a retainer. Further, the main flow channel 12 extends to the mounting side 11, and the sealing member 2 extends out of the mounting side 11. One of the mounting side 11 and the sealing member 2 is provided with a positioning protrusion 4, and the other is provided with a positioning groove 5. The positioning protrusion 4 is inserted into the positioning groove 5 to achieve a mating connection (which can be a clearance fit or an overfit), forming a positioning fit in which the central axis of the main flow channel 12 and the central axis of the sealing part 23 are coaxial, thereby improving the coaxiality between the main flow channel 12 and the sealing part 23, and thus making the O-ring on the sealing part 23 bear force evenly. Furthermore, when the mounting assembly 3 is installed on the valve body 1, the mounting member 32 for winding the coil in the mounting assembly 3 and the valve body 1 respectively abut against and press against the two sides of the seal 2 from both sides along the first direction, applying a pressing force to both sides of the seal 2 to fix the seal 2 and keep the positioning protrusion 4 and the positioning groove 5 in the positioning engagement position. In this way, the positioning protrusion 4 and the positioning groove 5 maintain a mating connection, so that the main flow channel 12 and the sealing part 23 maintain a positioning and mating connection, thereby ensuring good coaxiality between the main flow channel 12 and the sealing part 23, and keeping the O-ring on the sealing part 23 under uniform force.

Claims

1. A solenoid valve, characterized in that, include: The valve body (1) has an installation side (11), and the valve body (1) has a main flow channel (12) that extends through the installation side (11), and the valve body has a first direction parallel to the central axis of the main flow channel (12). A sealing element (2) has a first end (21) and a second end (22) arranged opposite to each other. The first end (21) is provided with a sealing part (23). The sealing part (23) is located in the main flow channel (12), and the outer wall of the sealing part (23) is sealed to the main flow channel (12). Mounting assembly (3), which includes a mounting element (32) for winding a coil, is detachably connected to the valve body (1). One of the mounting side (11) and the sealing element (2) is provided with a positioning groove (5), and the other of the mounting side (11) and the sealing element (2) is provided with a positioning protrusion (4). The positioning groove and the positioning protrusion are connected to form a positioning fit that makes the central axis of the main flow channel and the central axis of the sealing part coaxial. The mounting element (32) presses the second end (22) to maintain the positioning fit between the positioning protrusion (4) and the positioning groove (5). The mounting side (11) is provided with the positioning groove (5), and the positioning groove (5) is connected to the main flow channel (12) and is arranged around the outer periphery of the main flow channel (12), and the circumferential axis of the positioning groove (5) is coaxial with the central axis of the main flow channel (12); or, The sealing element (2) is provided with the positioning groove (5), and the positioning groove (5) is arranged around the central axis of the main flow channel (12); The outer side wall of the second end (22) is provided with an abutting protrusion (6); the mounting side (11) is provided with an abutting groove (7), the bottom of the abutting protrusion (6) and the abutting groove (7) abut against each other along the first direction, or the abutting protrusion (6) and the mounting side (11) abut against each other along the first direction.

2. The solenoid valve according to claim 1, characterized in that, The mounting side (11) is provided with the positioning groove (5), the positioning groove (5) is connected to the main flow channel (12) and is arranged around the outer periphery of the main flow channel (12), and the abutment groove (7) is arranged around the outer periphery of the positioning groove (5) and is connected to the periphery of the positioning groove (5).

3. The solenoid valve according to claim 1, characterized in that, The positioning protrusion (4) and the abutting protrusion (6) are arranged sequentially from the first end (21) to the second end (22).

4. The solenoid valve according to claim 1, characterized in that, The solenoid valve further includes a valve core (8) and a stationary iron core (9). The stationary iron core (9) is disposed in the mounting member (32), and the end face of the stationary iron core (9) facing the second end (22) is provided with a core hole (91) extending along the first direction. The sealing member (2) is provided with a first through hole (24) extending along the first direction. The valve core (8) passes through the first through hole (24) and extends at least partially into the core hole (91), so that the stationary iron core (9) at least partially separates the valve core (8) and the mounting member (32).

5. The solenoid valve according to claim 4, characterized in that, The first through hole (24) includes a first hole segment (241) and a second hole segment (242) that are connected. The first hole segment (241) extends through to the end face of the first end (21), and the second hole segment (242) extends through to the end face of the second end (22). The diameter of the first hole segment (241) is smaller than the diameter of the second hole segment (242).

6. The solenoid valve according to claim 5, characterized in that, There is a gap between the stationary iron core (9) and the second end (22), or the end face of the stationary iron core (9) along the first direction is flush with the end face of the second end (22), or the stationary iron core (9) extends into the second hole section (242).

7. The solenoid valve according to claim 1, characterized in that, The mounting assembly (3) further includes a mounting housing (31) which is mounted on the valve body (1) and causes the mounting member (32) to abut against the second end (22). The sealing element (2) and the mounting element (32) cooperate to form a connecting channel (80), which passes through the sealing element (2) and the mounting element (32) in the first direction and is connected to the main flow channel (12); and the solenoid valve also includes a valve core (8) and a stationary iron core (9), the valve core (8) is at least partially located in the connecting channel (80), one end of the stationary iron core (9) along the first direction is fixed relative to the mounting housing (31), and the other end of the stationary iron core (9) along the first direction is connected to the valve core (8) through an elastic element, so that the elastic element can generate a force acting on the stationary iron core (9) and the valve core (8) along the first direction.

8. The solenoid valve according to claim 7, characterized in that, The elastic element is a return spring (50), the sealing element (2) is provided with a first through hole (24) extending along the first direction, the mounting element (32) is provided with a second through hole (321) extending along the first direction, the first through hole (24) and the second through hole (321) are connected to form a connecting channel, the valve core (8) passes through the first through hole (24), the stationary iron core (9) passes through the second through hole (321) and is fixedly connected to the mounting housing (31), and the return spring (50) is located in the connecting channel.

9. The solenoid valve according to claim 1, characterized in that, The mounting assembly (3) further includes a mounting housing (31), which is detachably mounted on the valve body (1) and forms a mounting cavity (10) with the mounting side (11). The mounting member (32) is disposed in the mounting cavity (10), and the two ends of the mounting member (32) abut against the seal (2) and the mounting cavity (10) respectively along the first direction to fix the mounting member (32) and the seal (2).

10. The solenoid valve according to claim 9, characterized in that, The solenoid valve also includes a valve core (8) and a stationary iron core (9). The sealing element (2) is provided with a first through hole (24) that passes through the central axis of the main flow channel (12). The mounting element (32) is provided with a second through hole (321) that passes through the central axis of the main flow channel (12). The stationary iron core (9) and the second through hole (321) are connected in a cooperative manner. The valve core (8) passes through the first through hole (24) and is connected in a cooperative manner with it. The valve core (8) and the stationary iron core (9) are arranged opposite to each other.

11. The solenoid valve according to claim 10, characterized in that, The outer wall of the mounting component (32) protrudes towards the cavity wall of the mounting cavity (10) with a first positioning part (322), and the cavity wall of the mounting cavity (10) protrudes towards the mounting component (32) with a second positioning part (101). The first positioning part (322) and the second positioning part (101) are connected in cooperation.

12. The solenoid valve according to claim 10, characterized in that, One of the second end (22) and the mounting member (32) is provided with a mating protrusion (20), and the other of the sealing member (2) and the mounting member (32) is provided with a mating groove (30). The mating protrusion (20) and the mating groove (30) are connected to each other so that the sealing member (2) and the mounting member (32) are in contact.

13. The solenoid valve according to claim 12, characterized in that, The sealing element (2) is provided with the mating protrusion (20), and the mounting element (32) is provided with the mating groove (30). The mating protrusion (20) is arranged around the first through hole (24), and the inner side of the mating protrusion (20) is in contact with the hole wall of the first through hole (24). The mating groove (30) communicates with the second through hole (321), and the mating groove (30) is arranged around the second through hole (321); or, The sealing element (2) is provided with the mating groove (30), and the mounting element (32) is provided with the mating protrusion (20). The mating groove (30) is connected to the first through hole (24). The mating groove (30) is arranged around the first through hole (24). The mating protrusion (20) is arranged around the second through hole (321). The inner side of the mating protrusion (20) is connected to the hole wall of the second through hole (321).

14. The solenoid valve according to claim 1, characterized in that, The sealing element (2) is provided with a first through hole (24) extending along the first direction, and the wall of the first through hole (24) is provided with a first vent hole (25) extending to the outer wall of the sealing element (2). The outer wall of the valve body (1) and / or the outer wall of the mounting assembly (3) is provided with a second vent hole (40) communicating with the first vent hole (25); and, The solenoid valve further includes a valve core (8) and a stationary iron core (9), and the sealing element (2) is provided with a first through hole (24) extending along the first direction. The end face of the stationary iron core (9) facing the second end (22) is provided with a core hole (91) extending along the first direction. A first exhaust gap (60) is provided between the core hole (91) and the valve core (8). A second exhaust gap (70) is provided between the first through hole (24) and the valve core (8). The stationary iron core (9) is located outside the projection column of the first exhaust hole (25).

15. The solenoid valve according to claim 1, characterized in that, The valve body (1) is also provided with a first flow channel (13) and a second flow channel (14). The first flow channel (13) and the second flow channel (14) are spaced apart in a first direction and are connected to the periphery of the main flow channel (12). The main flow channel (12) is provided with a sealed area (15) between the first flow channel (13) and the second flow channel (14), and the main flow channel (12) has at least a first position and a second position; The solenoid valve further includes a valve core (8) having a sealing protrusion (81), and the valve core (8) being configured to reciprocate between a first position and a second position in the main flow channel (12); and, When the valve core (8) moves to the first position, the sealing protrusion (81) forms a sealing fit with the sealing area (15) to block the communication between the first flow channel (13) and the second flow channel (14); When the valve core (8) moves to the second position, the sealing protrusion (81) disengages from the sealing area (15) so that the first flow channel (13) communicates with the second flow channel (14).

16. A method for manufacturing a solenoid valve as described in any one of claims 1 to 15, characterized in that, Includes the following steps: Select the valve body (1), the seal (2) and the mounting assembly (3), and wind a coil on the mounting part (32) of the mounting assembly (3); Insert the sealing part (23) into the main flow channel (12) so that the outer wall of the sealing part (23) and the main flow channel (12) form a sealing fit; Align the positioning protrusion (4) and the positioning groove (5) with each other; Install the mounting component (3) onto the valve body (1) so that the mounting component (32) and the valve body (1) abut against the sealing component (2) to form a solenoid valve.

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