A novel electromagnetic on-off valve device

Abstract

The utility model provides a novel electromagnetic switch valve device, including valve housing, upper pole plate, armature, valve core, jacks, electromagnetic sleeve and shaft sleeve, armature can be slidably arranged in the electromagnetic sleeve, the valve core can be slidably arranged in the shaft sleeve, the end of valve core and the end of armature are coaxial connection through jacks, the end of valve core is provided with the limit slot, the limit slot is provided with the opening respectively in the end face and the side surface of valve core, one end of jacks is fixedly connected with armature, the other end of jacks is provided with the radial protruding positioning end, the opening shape of limit slot in the end of valve core side surface is consistent with the side profile shape of jacks end, to form the locking by the opening of limit slot in the end of valve core side surface and insert the positioning end of jacks into the limit slot, thereby with valve core axial mutual positioning connection of armature, has saved the connecting procedure time between valve core and armature, avoids using special tooling, makes the assembly process of switch valve get effective simplification, has reduced the overall cost of valve device.

Description

Technical Field

[0001] This utility model relates to the field of valve equipment technology, and more specifically, to a novel electromagnetic switching valve device. Background Technology

[0002] An electromagnetic switching valve is a basic automation component used to control the flow or stop of fluids; it belongs to the actuator category. Electromagnetic switching valves can be used with different circuits to achieve the desired control, and are used in industrial control systems to adjust the direction, speed, and other parameters of the medium.

[0003] Solenoid valve principle: When the solenoid valve is energized, the armature, under the action of electromagnetic force, overcomes the spring force and moves towards one end of the valve core. The valve core is positioned and connected to the armature. The armature drives the valve core to move axially, thereby changing the obstruction of the inlet and outlet ports on the valve housing, thus opening the valve and controlling the flow of hydraulic oil. The armature and push rod are press-fitted together. The push rod adopts a "barb" structure design, which is fitted into the inner hole of the valve core. After energization, the armature moves towards the upper electrode plate, and the "barb" structure on the push rod drives the valve core to move towards the electrode plate, opening the solenoid valve core and connecting the inlet and outlet ports. After de-energization, the valve core moves away from the upper electrode plate under the action of spring force until it contacts the sealing cone surface on the bushing, thus closing the solenoid valve.

[0004] The commonly used electromagnetic switching valves have relatively complex structures, with multiple functional components that realize motion control. These components work together to complete the valve function. However, due to the large number of components, the coordination between them and the assembly of each component are also quite complex, making it difficult to assemble and produce efficiently.

[0005] In summary, existing electromagnetic switching valves suffer from technical problems such as complex structure leading to low assembly efficiency. Utility Model Content

[0006] The technical problem this invention aims to solve is the low assembly efficiency caused by the complex structure of electromagnetic switching valves.

[0007] To address the aforementioned problems, this utility model provides a novel electromagnetic switching valve device, comprising a valve housing, an upper electrode plate, an armature, a valve core, a push rod, an electromagnetic sleeve, and a bushing. The valve housing and bushing are both hollow cylindrical and coaxially connected. The upper electrode plate is connected to one end of the valve housing. The electromagnetic sleeve is coaxially disposed within the valve housing and adjacent to the upper electrode plate. The armature is slidably disposed within the electromagnetic sleeve, and the valve core is slidably disposed within the bushing. The end of the valve core communicates with the end of the armature. The valve core is coaxially connected via the push rod. A limiting groove is provided at the end of the valve core. The limiting groove has openings on the end face and side face of the valve core. One end of the push rod is fixedly connected to the armature. The other end of the push rod has a radially protruding positioning end. The shape of the opening of the limiting groove on the side face of the valve core end is consistent with the side profile shape of the push rod end. The positioning end of the push rod is inserted into the limiting groove through the opening of the limiting groove on the side face of the valve core end to form a lock, thereby axially positioning and connecting the armature and the valve core.

[0008] This novel electromagnetic switching valve device optimizes the design of its main internal working mechanism based on the traditional structure. Specifically, it optimizes the connection between the valve core, which directly controls the on / off state of the valve, and the armature, which generates axial displacement through electromagnetic action. In traditional designs, a through hole is pre-drilled at the top of the valve core, and a threaded hole or other similar mounting structure is provided at the bottom of the armature for fixing. When connecting the valve core and armature, the process requires first aligning them coaxially and fixing their relative positions. While maintaining this state, the tip of a mounting rod is passed through the top hole of the valve core and positioned against the hole at the bottom of the armature. This installation and fixing method is complex and requires auxiliary tooling for positioning. The present application provides a simpler and more convenient positioning device. The main improvement lies in the structure of the connection position at the top of the valve core. A groove structure that can be inserted from one side replaces the usual vertical through hole. The shape of the limiting groove matches the side profile of the end of the push rod. Thus, when the armature and valve core are integrally formed, the push rod only needs to be pre-fixed at the connection end of the armature, and then the other end of the push rod can be slid into the limiting groove to complete the connection. The inner wall structure of the valve shell ensures lateral positioning of the two connected structures, and the limiting groove ensures axial fixed connection between the armature and valve core by limiting the positioning end of the push rod. This connection method greatly saves the connection process time between the valve core and armature, eliminating the need to maintain axial alignment of the armature and valve core throughout the assembly process. Therefore, it avoids the use of special tooling, effectively simplifying the assembly process of the on / off valve and reducing the overall cost of the valve assembly.

[0009] As a preferred embodiment, the top of the valve core is provided with a raised cylindrical step structure, the cylindrical step structure being hollow and connected to the inner cavity of the valve core; the limiting groove includes a top groove and a bottom groove that are interconnected, the top groove extending radially from the outer peripheral wall of the cylindrical step structure to its central region, the groove width of the top groove being adapted to the rod diameter of the push rod, allowing the push rod to slide into the center of the cylindrical step structure through the top groove, the bottom groove being provided at the transition end face between the top surface of the valve core and the cylindrical step structure, the bottom groove being parallel to the top groove, the groove width of the bottom groove being adapted to the outer diameter of the positioning end, and the groove depth of the bottom groove being adapted to the thickness of the positioning end.

[0010] This design provides a preferred valve core top structure design. The valve core top adapts to the groove structure with a frustum structure. The cavity inside the frustum is used to accommodate the positioning end of the push rod. The limiting groove can be divided into a top groove and a bottom groove according to different structures and functions. The size of the top groove matches the rod diameter of the push rod, and the size of the bottom groove matches the width of the positioning end of the push rod, so that the push rod can be smoothly installed from the outer peripheral wall of the valve core to the limiting position. This design effectively ensures that the push rod is smoothly installed into the designated position on the valve core and forms a good positioning.

[0011] As a preferred embodiment, the push rod is shaped like a pin with one end bulging, and a pin hole is provided at the center of the armature end. The armature is pre-installed and fixed to the push rod through the pin hole. This design provides a preferred push rod design and an assembly structure on the mating armature. The armature end is provided with a pin hole, and the push rod is fixed to the armature through the engagement of the push rod and the pin hole. The fixing method can be an interference fit or a threaded fit, etc.

[0012] As a preferred embodiment, the push rod and the armature are integrally formed and connected. A design parallel to the above-mentioned technical solution is also provided, in which the push rod and the armature are integrally formed, and this design, where they are a single part, can further reduce installation costs.

[0013] As a preferred embodiment, a compression spring is abutted between the valve core's end face and the bottom of the valve housing, providing the spring force for the valve core to return to its original position. This design accommodates the valve core structure with an axially aligned compression spring coaxial with the valve core, ensuring automatic reset of the valve core upon power failure and guaranteeing smooth valve operation.

[0014] As a preferred embodiment, a lower electrode plate is disposed within the valve housing, opposite to the upper electrode plate. The lower electrode plate is sleeve-shaped and coaxially sleeved around the outer periphery of the armature. The two ends of the compression spring abut against the bottom of the lower electrode plate and the top of the valve core, respectively. This design further optimizes the motion control mechanism within the switching valve, ensuring interaction with the armature under energized conditions through the arrangement of the upper and lower electrode plates, thus guaranteeing the operation of the switching valve.

[0015] Both the upper and lower electrode plates are fixed to the inner peripheral wall of the valve housing by riveting. This design provides a preferred assembly and fixing method for the upper and lower electrode plates. The riveting installation method between the electrode plates and the inner peripheral wall of the valve housing ensures that the connection is strong enough to withstand the repeated opening and closing vibrations of the valve.

[0016] As a preferred embodiment, the lower electrode plate is integrally connected to a support plate. The surface of the support plate at the connection point with the lower electrode plate is perpendicular to the axial direction of the lower electrode plate. The support plate extends beyond the valve housing and is an irregularly bent plate. The irregular shape design of the support plate can reduce the vibration energy transmitted from vehicle body vibration to the solenoid valve.

[0017] As a preferred embodiment, the valve core has four oil holes on its side wall, which connect to the inner cavity of the valve core and maintain the pressure balance between the inside and outside of the valve core. This design provides a preferred valve core structure, in which the entire structure is a hollow shaft with oil holes distributed on its outer peripheral wall, connecting the inner and outer spaces of the valve core, ensuring pressure balance between the inner and outer cavities, and meeting the working requirements of the switching valve itself.

[0018] As a preferred embodiment, the upper electrode plate is cylindrical, with an annular protrusion at one end of the upper electrode plate located inside the valve housing. The top of the annular protrusion is conical. A raised electrode boss is provided on the end face of the upper electrode plate within the annular protrusion. This design provides a preferred upper electrode plate end design, with a raised annular shape on the outer periphery of the end face and a boss on the electrode plate within the annular space. This design reduces the contact area between the armature and the upper electrode plate, preventing the armature from remaining attracted to the upper electrode plate even after power is cut off.

[0019] As a preferred embodiment, the armature has a beveled chamfered surface on the outer edge of its end face adjacent to the valve core to reduce the contact area between the end faces of the armature and the valve core. Reducing the contact area between the armature and the valve core prevents the armature from magnetizing the valve core after power is cut off, thus avoiding the armature and valve core from attracting each other. Attached Figure Description

[0020] Figure 1 A schematic diagram of the external overall structure of a novel electromagnetic switch valve device provided by this utility model; Figure 2 for Figure 1 A side cross-sectional structural schematic diagram of a novel electromagnetic switching valve device. Figure 3 for Figure 1 A schematic diagram of the valve core of a novel electromagnetic switching valve device. Figure 4 A schematic cross-sectional view of the valve core and armature of another electromagnetic switching valve device; Figure 5for Figure 1 A schematic diagram of the overall structure of the valve core and armature of the novel electromagnetic switching valve device. Figure 6 for Figure 1 A schematic diagram of the upper electrode plate of a novel electromagnetic switch valve device. in, Figures 1-6 middle: 1. Valve housing; 2. Armature; 3. Upper electrode plate; 3-1. Annular protrusion; 3-2. Electrode plate boss; 4. Electromagnetic sleeve; 5. Push rod; 5-1. Positioning end; 6. Valve core; 6-1. Cylindrical stepped structure; 7. Bushing; 8. Limiting groove; 8-1. Top groove; 8-2. Bottom groove; 9. Compression spring; 10. Lower electrode plate; 10-1. Support plate. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Before providing a detailed explanation of the working principle of this utility model, further clarification is needed regarding its description: In this description, terms such as "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, an indirect connection through an intermediate medium, or a welded connection between 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.

[0024] refer to Figures 1-6 The following examples illustrate this. Figure 1 A schematic diagram of the external overall structure of a novel electromagnetic switch valve device provided by this utility model; Figure 2 for Figure 1 A side cross-sectional structural schematic diagram of a novel electromagnetic switching valve device. Figure 3 for Figure 1A schematic diagram of the valve core of a novel electromagnetic switching valve device. Figure 4 A schematic cross-sectional view of the valve core and armature of another electromagnetic switching valve device; Figure 5 for Figure 1 A schematic diagram of the overall structure of the valve core and armature of the novel electromagnetic switching valve device. Figure 6 for Figure 1 A schematic diagram of the upper electrode plate of the novel electromagnetic switch valve device.

[0025] This embodiment provides a novel electromagnetic switching valve device, including a valve housing 1, an upper electrode plate 3, an armature 2, a valve core 6, a push rod 5, an electromagnetic sleeve 4, and a bushing 7. The valve housing 1 and bushing 7 are both hollow cylindrical and coaxially connected. The upper electrode plate 3 is connected to one end of the valve housing 1. The electromagnetic sleeve 4 is coaxially disposed within the valve housing 1 and adjacent to the upper electrode plate 3. The armature 2 is slidably disposed within the electromagnetic sleeve 4, and the valve core 6 is slidably disposed within the bushing 7. The end of the valve core 6 is connected to the end of the armature 2 via the push rod 5. The valve core 6 is coaxially connected, and a limiting groove 8 is provided at its end. The limiting groove 8 has openings on the end face and side face of the valve core 6. One end of the push rod 5 is fixedly connected to the armature 2, and the other end of the push rod 5 is provided with a radially protruding positioning end head 5-1. The shape of the opening of the limiting groove 8 on the side face of the valve core 6 is consistent with the side profile shape of the end face of the push rod 5, so that the positioning end head 5-1 of the push rod 5 can be inserted into the limiting groove 8 through the opening of the limiting groove 8 on the side face of the valve core 6 to form a lock, thereby axially positioning and connecting the armature 2 and the valve core 6.

[0026] This novel electromagnetic switching valve device optimizes the design of its main internal working mechanism based on the traditional structure. Specifically, it optimizes the connection between the valve core 6, which directly controls the on / off state of the valve, and the armature 2, which generates axial displacement through electromagnetic action. In traditional designs, a through hole is pre-drilled at the top of the valve core 6, and a threaded hole or other similar mounting structure is provided at the bottom of the armature 2 for fixing. When connecting the valve core 6 and the armature 2, the process requires first aligning them coaxially and fixing their relative positions. While maintaining this state, the tip of the push rod 5 used for fixing is passed through the top hole of the valve core 6, and the tip of the push rod 5 is positioned and connected to the hole at the bottom of the armature 2. This installation and fixing method is complex and requires corresponding tooling for auxiliary positioning. The present application provides a simpler and more convenient positioning design, improving the main... If the structure at the top connection position of the valve core 6 is replaced by a groove structure that can be inserted from one side instead of a general vertical through hole, and the shape of the limiting groove 8 matches the side profile shape of the end of the push rod 5, then when the armature 2 and the valve core 6 are integrally formed, it is only necessary to fix the push rod 5 at the connection end of the armature 2 in advance, and then slide the other end of the push rod 5 into the limiting groove 8 to complete the docking. The inner wall structure of the valve shell 1 can ensure the lateral positioning of the two connected structures. The limiting groove 8 limits the positioning end 5-1 of the push rod 5 to ensure the axial fixed connection of the armature 2 and the valve core 6. This connection method greatly saves the connection process time between the valve core 6 and the armature 2. It is not necessary to keep the axial alignment of the armature 2 and the valve core 6 at all times during the assembly process. Therefore, it avoids the use of special tooling, effectively simplifies the assembly process of the switch valve, and reduces the overall cost of the valve device.

[0027] The technical solution provided in this embodiment includes a raised cylindrical step structure 6-1 at the top of the valve core 6. The cylindrical step structure 6-1 is hollow and communicates with the inner cavity of the valve core 6. The limiting groove 8 includes a top groove 8-1 and a bottom groove 8-2 that communicate with each other. The top groove 8-1 extends radially from the outer peripheral wall of the cylindrical step structure 6-1 to its central region. The groove width of the top groove 8-1 is adapted to the rod diameter of the push rod 5, allowing the push rod 5 to slide into the center of the cylindrical step structure 6-1 through the top groove 8-1. The bottom groove 8-2 is located at the transition end face between the top surface of the valve core 6 and the cylindrical step structure 6-1. The bottom groove 8-2 is parallel to the top groove 8-1. The groove width of the bottom groove 8-2 is adapted to the outer diameter of the positioning end 5-1, and the groove depth of the bottom groove 8-2 is adapted to the thickness of the positioning end 5-1.

[0028] This design provides a preferred top structure design for the valve core 6. The top of the valve core 6 is fitted with a frustum structure in the groove structure. The cavity inside the frustum is used to accommodate the positioning end 5-1 of the push rod 5. The limiting groove 8 can be divided into a top groove 8-1 and a bottom groove 8-2 according to different structures and functions. The size of the top groove 8-1 matches the rod diameter of the push rod 5, and the size of the bottom groove 8-2 matches the width of the positioning end 5-1 of the push rod 5. This allows the push rod 5 to be smoothly installed from the outer peripheral wall of the valve core 6 to the limiting position. This design effectively ensures that the push rod 5 is smoothly installed into the designated position on the valve core 6 and forms a good positioning.

[0029] In the technical solution provided in this embodiment, the push rod 5 is shaped like a pin with one end enlarged, and a pin hole is provided at the center of the end of the armature 2. The armature 2 is pre-installed and fixed to the push rod 5 through the pin hole. This design provides a preferred design of the push rod 5 and the assembly structure on the mating armature 2. The end of the armature 2 is provided with a pin hole, and the push rod 5 is fixed to the armature 2 through the cooperation of the push rod 5 and the pin hole. The fixing method can be interference fit or threaded fit, etc.

[0030] The technical solution provided in this embodiment involves the push rod 5 and the armature 2 being integrally formed and connected. A design parallel to the above technical solution is also provided, in which the push rod and armature are integrally cast and machined, and this design, where they are a single part, can further reduce installation costs.

[0031] In the technical solution provided in this embodiment, a compression spring 9 abuts against the valve core 6 between its end face and the bottom of the valve housing 1, and the compression spring 9 provides the elastic force for the valve core 6 to return to its original position. This design adapts to the axial arrangement of the compression spring 9 along the valve core 6 structure, and the compression spring 9 provides automatic reset of the valve core 6 when power is off, ensuring smooth operation of the valve.

[0032] The technical solution provided in this embodiment includes a lower electrode plate 10 located inside the valve housing 1, opposite to the upper electrode plate 3. The lower electrode plate 10 is sleeve-shaped and coaxially sleeved with a 7 around the armature 2. The two ends of the compression spring 9 abut against the bottom of the lower electrode plate 10 and the top of the valve core 6, respectively. This design further optimizes the motion control mechanism within the switching valve, ensuring interaction with the armature 2 under energized conditions through the arrangement of the upper and lower electrode plates 10, thus guaranteeing the operation of the switching valve.

[0033] In the technical solution provided in this embodiment, the upper electrode plate 3 and the lower electrode plate 10 are both riveted to the inner peripheral wall of the valve housing 1. This design provides a preferred assembly and fixing method for the upper and lower electrode plates 10. The riveting fixing method between the electrode plates and the inner peripheral wall of the valve housing 1 ensures that the connection is strong enough to withstand the repeated opening and closing vibrations of the valve.

[0034] In the technical solution provided in this embodiment, the lower electrode plate 10 is integrally connected to a support plate 10-1. The surface of the support plate 10-1 at the connection position with the lower electrode plate 10 is perpendicular to the axial direction of the lower electrode plate 10. The support plate 10-1 extends beyond the valve housing 1 and is an irregularly bent plate. The irregular shape design of the support plate 10-1 can reduce the vibration energy transmitted from vehicle body vibration to the solenoid valve.

[0035] The technical solution provided in this embodiment has four oil holes on the side wall of the valve core 6. These oil holes connect to the inner cavity of the valve core 6, maintaining the internal and external pressure balance of the valve core 6. This design provides a preferred valve core 6 structure, which is a hollow shaft with oil holes distributed on its outer peripheral wall, connecting the internal and external spaces of the valve core 6, ensuring pressure balance between the internal and external cavities, and meeting the working requirements of the switching valve itself.

[0036] In the technical solution provided in this embodiment, the upper electrode plate 3 is cylindrical, and the outer edge of the upper electrode plate 3 located inside the valve housing 1 has an annular protrusion 3-1, the top of which is conical. A raised electrode boss 3-2 is provided on the end face of the upper electrode plate 3 within the annular protrusion 3-1. This design provides a preferred end design for the upper electrode plate 3, with a raised annular shape on the outer periphery of the end face and a boss on the electrode plate within the annular space. This design reduces the contact area between the armature 2 and the upper electrode plate 3, preventing the armature 2 from remaining attracted to the upper electrode plate 3 after power is cut off.

[0037] The technical solution provided in this embodiment includes an armature 2 with a beveled chamfered surface on the outer edge of its end face adjacent to the valve core 6, to reduce the contact area between the end faces of the armature 2 and the valve core 6. Reducing the contact area between the armature 2 and the valve core 6 prevents the armature 2 from magnetizing the valve core 6 after power is cut off, thus preventing the armature 2 and valve core 6 from attracting each other.

[0038] Although the embodiments of this utility model have been disclosed above, the scope of protection of this utility model is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this utility model, and all such changes and modifications will fall within the protection scope of this utility model.

Claims

1. A novel electromagnetic switching valve device, comprising a valve housing (1), an upper electrode plate (3), an armature (2), a valve core (6), a push rod (5), an electromagnetic sleeve (4), and a bushing (7), wherein the valve housing (1) and the bushing (7) are both hollow cylindrical and coaxially connected, the upper electrode plate (3) is connected to one end of the valve housing (1), the electromagnetic sleeve (4) is coaxially disposed inside the valve housing (1) and adjacent to the upper electrode plate (3), the armature (2) is slidably disposed inside the electromagnetic sleeve (4), the valve core (6) is slidably disposed inside the bushing (7), and the end of the valve core (6) is coaxially connected to the end of the armature (2) through the push rod (5), characterized in that, The valve core (6) is provided with a limiting groove (8) at its end. The limiting groove (8) has openings on the end face and side face of the valve core (6). One end of the push rod (5) is fixedly connected to the armature (2). The other end of the push rod (5) is provided with a radially protruding positioning end (5-1). The shape of the opening of the limiting groove (8) on the side face of the valve core (6) is consistent with the side profile shape of the end of the push rod (5). The positioning end (5-1) of the push rod (5) is inserted into the limiting groove (8) through the opening of the limiting groove (8) on the side face of the valve core (6) to form a lock, thereby axially positioning and connecting the armature (2) and the valve core (6).

2. The novel electromagnetic switching valve device according to claim 1, characterized in that, The valve core (6) has a raised cylindrical step structure (6-1) at its top end. The cylindrical step structure (6-1) is hollow inside and connects to the inner cavity of the valve core (6). The limiting groove (8) includes a top groove (8-1) and a bottom groove (8-2) that are interconnected. The top groove (8-1) extends radially from the outer peripheral wall of the cylindrical step structure (6-1) to its central region. The groove width of the top groove (8-1) is adapted to the rod diameter of the top rod (5), so that the... The top rod (5) can slide into the center of the cylindrical step structure (6-1) through the top groove (8-1). The bottom groove (8-2) is set at the transition end face between the top surface of the valve core (6) and the cylindrical step structure (6-1). The bottom groove (8-2) is parallel to the top groove (8-1). The groove width of the bottom groove (8-2) is adapted to the outer diameter of the positioning end (5-1). The groove depth of the bottom groove (8-2) is adapted to the thickness of the positioning end (5-1).

3. The novel electromagnetic switching valve device according to claim 2, characterized in that, The top rod (5) is a pin-shaped rod with one end enlarged. A pin hole is provided at the center of the end of the armature (2). The armature (2) is pre-installed and fixed to the top rod (5) through the pin hole.

4. The novel electromagnetic switching valve device according to claim 2, characterized in that, The top rod (5) is integrally formed and connected with the armature (2).

5. The novel electromagnetic switching valve device according to any one of claims 1-4, characterized in that, The valve core (6) has a compression spring (9) abutting between its end face and the bottom of the valve housing (1), and the compression spring (9) provides the elastic force for the valve core (6) to return to its original position.

6. The novel electromagnetic switching valve device according to claim 5, characterized in that, The valve housing (1) is provided with a lower electrode plate (10) that is opposite to the upper electrode plate (3). The lower electrode plate (10) is sleeve-shaped and is coaxially sleeved (7) on the outer periphery of the armature (2). The two ends of the compression spring (9) abut against the bottom of the lower electrode plate (10) and the top of the valve core (6), respectively.

7. The novel electromagnetic switching valve device according to claim 5, characterized in that, The upper electrode plate (3) and the lower electrode plate (10) are fixedly connected to the inner peripheral wall of the valve housing (1) by riveting.

8. The novel electromagnetic switching valve device according to claim 6, characterized in that, The lower electrode plate (10) is integrally connected to a support plate (10-1). The plate surface of the support plate (10-1) at the connection position with the lower electrode plate (10) is perpendicular to the axial direction of the lower electrode plate (10). The support plate (10-1) extends out of the valve housing (1) and is an irregularly bent plate.

9. The novel electromagnetic switching valve device according to claim 5, characterized in that, The upper electrode plate (3) is cylindrical. The outer edge of the upper electrode plate (3) located inside the valve housing (1) is an annular protrusion (3-1). The top of the annular protrusion (3-1) is conical. The end face of the upper electrode plate (3) is provided with a protruding electrode plate boss (3-2) in the area inside the annular protrusion (3-1).

10. The novel electromagnetic switching valve device according to claim 5, characterized in that, The armature (2) has a beveled chamfered surface on the outer edge of its end face adjacent to the valve core (6) to reduce the contact area between the end faces of the armature (2) and the valve core (6).

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