Electromagnetic valve facilitating manufacturing assembly

Abstract

The utility model provides a kind of solenoid valve of easy manufacture assembly, it includes retainer, fixed cover plate, coil module, static core, moving core structure, elastic part, sleeve and valve body.Static core is connected with the one end of sleeve, same static core and fixed cover plate riveting, moving core structure is slidably arranged in sleeve, elastic part is connected between static core and moving core structure.Coil module is sleeved in the outer periphery of sleeve, fixed cover plate and retainer riveting, coil module is limited between fixed cover plate and retainer, valve body is fixedly connected with the side of retainer away from fixed cover plate, the end of sleeve away from fixed cover plate penetrates retainer.Coil module need not be connected as a whole with retainer rubber injection molding, but is connected with retainer by assembly type, while sleeve is limited between static core and valve body, can reduce connecting structure, whole manufacture assembly is more easy, can improve production efficiency, reduce manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the field of solenoid valves, and in particular to a solenoid valve that is easy to manufacture and assemble. Background Technology

[0002] Solenoid valves, as key actuators in industrial automation systems, are widely used in fluid control. Currently, solenoid valves on the market typically consist of three main parts: a coil assembly, an iron-core valve core assembly, and a valve body. The coil assembly generally involves winding enameled wire onto a wire frame, then injection molding the entire assembly to achieve insulation, sealing, and mechanical protection for the coil. This process requires specialized molds and is complex and costly to manufacture. Furthermore, localized repair and replacement are difficult when the coil malfunctions.

[0003] On the other hand, iron-core valve assemblies typically involve fixing the stationary iron core to the sleeve using welding or riveting. External threads are then machined onto the outer circumference of the stationary iron core, and external threads are also provided on the outer circumference of the sleeve at the end furthest from the stationary iron core. Internal threads are provided on the inner wall of the valve cavity within the valve body. The stationary iron core is threadedly connected to the nut, and the sleeve is threadedly connected to the internal threads of the valve cavity. The coil assembly is fitted onto the outer circumference of the sleeve and simultaneously locked between the nut and the valve body. This process requires machining of numerous threaded structures, resulting in high processing costs. It also involves numerous structural parts requiring fastening, and the connection stability is not high enough.

[0004] Therefore, there is a need to provide a solenoid valve that is easy to manufacture and assemble to solve the above-mentioned technical problems. Utility Model Content

[0005] This invention provides a solenoid valve that is easy to manufacture and assemble, thereby solving the problems of complex manufacturing, high processing costs, and difficulty in partial repair and replacement of existing solenoid valves.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a solenoid valve that is easy to manufacture and assemble, comprising: a retainer, a fixed cover plate, a coil module, a stationary iron core, a moving iron core structure, an elastic element, a sleeve, and a valve body;

[0007] The stationary iron core is fixedly connected to one end inside the sleeve, and the stationary iron core extends out of the sleeve and is riveted to the fixed cover plate. The moving iron core structure is slidably disposed inside the sleeve, and the elastic element is connected between the stationary iron core and the moving iron core structure.

[0008] The coil module is sleeved on the outer periphery of the sleeve, the fixed cover plate is riveted to the retainer, the coil module is limited between the fixed cover plate and the retainer, the valve body is fixedly connected to the side of the retainer away from the fixed cover plate, the end of the sleeve away from the fixed cover plate passes through the retainer, and the sleeve is limited between the fixed cover plate and the valve body.

[0009] In this utility model, the retainer has a U-shaped structure, the retainer includes a middle plate and side plates connected to both ends of the middle plate, and the fixing cover plate is riveted to the two side plates.

[0010] The side plate has a connecting groove at its end, and the fixed cover plate has connecting blocks at both ends for positioning and engaging with the connecting groove. The thickness of the connecting block is less than the depth of the connecting groove, so that the fixed cover plate can rivet the connecting block. When the connecting block is positioned and connected with the connecting groove, the two end faces of the fixed cover plate are in surface contact with the inner surfaces of the two side plates respectively.

[0011] Furthermore, the connecting block and the fixing cover plate are integrally formed structures. The two side surfaces of the connecting block are flush with the two side surfaces of the fixing cover plate. A first groove is provided at the edge between the end faces of the connecting block and the fixing cover plate, and a second groove is provided at the two side edges inside the connecting groove.

[0012] In this utility model, the coil module includes a fixing frame, a positioning protrusion is provided on the fixing frame, and a positioning recess is provided on the end face of the fixing cover plate for positioning and cooperating with the positioning protrusion.

[0013] In this utility model, a valve cavity is provided at a position opposite to the sleeve of the valve body, the sleeve extends and connects to the valve cavity, a first sealing ring is provided between the outer periphery of the sleeve and the inner wall of the valve cavity, and a second sealing ring is provided between the outer periphery of the stationary iron core and the inner wall surface of the sleeve.

[0014] Optionally, the valve body is provided with a first delivery hole and a second delivery hole communicating with the valve cavity and the external space, and a valve core seat communicating with the first delivery hole and the second delivery hole is provided in the valve cavity;

[0015] The moving iron core structure includes a moving iron core body and a first sealing plug. The first sealing plug is connected to one end of the moving iron core body near the valve core seat. The valve core seat is located on the sliding trajectory of the first sealing plug. A blind hole is provided at one end of the moving iron core body away from the valve core seat.

[0016] Optionally, the valve body is provided with a first conveying hole and a second conveying hole communicating with the valve cavity and the external space, the stationary iron core is provided with a third conveying hole, and the valve core seat is provided in the valve cavity communicating with the first conveying hole and the second conveying hole;

[0017] The moving iron core structure includes a moving iron core body and a first sealing plug and a second sealing plug connected to both ends of the moving iron core body. The valve core seat is located on the sliding trajectory of the first sealing plug, and the third conveying hole is located on the sliding trajectory of the second sealing plug.

[0018] The moving iron core body has a through-hole through which a spring is installed. The two ends of the spring are in contact with the first sealing plug and the second sealing plug, respectively. The side of the moving iron core body has a through hole that connects the mounting groove and the inner cavity of the sleeve.

[0019] In this invention, a screw passes through the valve body and is threadedly connected to the cage.

[0020] Compared with the prior art, the advantages of this utility model are as follows: The coil module of the solenoid valve of this utility model, which is easy to manufacture and assemble, is connected to the cage in an assembled manner. The coil module does not need to be glued and injection molded to be connected as a whole with the cage. At the same time, the stationary iron core is riveted to the fixed cover plate, and the valve body is fixedly connected to the cage. This can limit the sleeve between the stationary iron core and the valve body, reduce the connection structure, make the overall manufacturing and assembly easier, improve production efficiency, and reduce manufacturing costs. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments are briefly introduced below. The drawings described below are only the corresponding drawings of some embodiments of this utility model.

[0022] Figure 1 This is a schematic diagram of the structure of the solenoid valve of this utility model, which is easy to manufacture and assemble.

[0023] Figure 2 This is an exploded view of the solenoid valve of this utility model, which is easy to manufacture and assemble.

[0024] Figure 3 This is a cross-sectional view of the first embodiment of the solenoid valve of this utility model, which is easy to manufacture and assemble.

[0025] Figure 4 This is a cross-sectional view of a second embodiment of the solenoid valve of this utility model that is easy to manufacture and assemble. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] The directional terms mentioned in this utility model, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom", are only for reference to the orientation of the accompanying drawings. The directional terms used are for the purpose of explaining and understanding this utility model, and are not intended to limit this utility model.

[0028] The terms "first" and "second" in this utility model are used for descriptive purposes only and should not be construed as indicating or implying relative importance, nor as a restriction on the order of events.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, a connection can be a detachable connection or a connection of an integral structure; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Existing solenoid valves suffer from problems such as complex manufacturing, high processing costs, and difficulty in partial repair and replacement.

[0031] The following is a preferred embodiment of a solenoid valve that can solve the above-mentioned technical problems and is easy to manufacture and assemble.

[0032] Please refer to Figure 1 , Figure 2 and Figure 3 In the diagram, units with similar structures are represented by the same labels.

[0033] This embodiment provides a solenoid valve that is easy to manufacture and assemble, which includes: a retainer 11, a fixed cover plate 12, a coil module 13, a stationary iron core 14, a moving iron core structure 17, an elastic element 18, a sleeve 16, and a valve body 15.

[0034] The stationary iron core 14 is fixedly connected to one end inside the sleeve 16, and extends beyond the sleeve 16 and is riveted to the fixed cover plate 12. Specifically, the riveting can be that one end of the stationary iron core 14 is provided with a riveting end with a smaller outer diameter, the riveting end penetrates the fixed cover plate 12, and then the riveting end is riveted, causing the fixed cover plate 12 to deform, thereby forming a fixed riveting connection between the riveting end and the fixed cover plate 12.

[0035] The moving iron core structure 17 is slidably disposed inside the sleeve 16, and the elastic element 18 is connected between the stationary iron core 14 and the moving iron core structure 17. The elastic element 18 is used to drive the moving iron core structure 17 to move towards the valve core seat 151.

[0036] The coil module 13 is sleeved on the outer periphery of the sleeve 16. The fixing cover 12 is riveted to the retainer 11. The coil module 13 is limited between the fixing cover 12 and the retainer 11. That is, the coil module 13 is assembled with the sleeve 16 and the retainer 11 in an assembled manner. The coil module does not need to be integrated with the retainer by injection molding, which reduces the processing cost and facilitates local maintenance and replacement.

[0037] The valve body 15 is fixedly connected to the side of the retainer 11 facing away from the fixed cover plate 12. The end of the sleeve 16 away from the fixed cover plate 12 passes through the retainer 11. The sleeve 16 is limited between the fixed cover plate 12 and the valve body 15. In this way, when the valve body 15 is connected to the retainer 11, the sleeve 16 can be fixed between the fixed cover plate 12 and the valve body 15. The stationary iron core 14 and the sleeve 16 do not need to be fixedly connected, and the sleeve 16 and the valve body 15 do not need to be threaded. This reduces the connection structure, and the fixed limitation is very stable. The overall manufacturing and assembly are easier, which can improve production efficiency and reduce manufacturing costs.

[0038] It should be noted that, specifically, the valve body 15 and the retainer 11 can be fixedly connected by screws passing through the valve body 15 and threaded together.

[0039] When the coil module 13 is energized, the stationary iron core 14 generates an electromagnetic force that attracts the moving iron core structure 17 to move away from the valve core seat 151.

[0040] Please refer to Figure 2 In this embodiment, the retainer 11 has a U-shaped structure and includes a middle plate and side plates connected to both ends of the middle plate. The fixed cover plate 12 is riveted to the two side plates.

[0041] The side plate has a connecting groove 111 at its end, and the fixed cover plate 12 has connecting blocks 121 at both ends for positioning and engaging with the connecting groove 111. The thickness of the connecting blocks 121 is less than the depth of the connecting groove 111, so that the fixed cover plate 12 can be riveted to fix the connecting blocks 121. When the connecting blocks 121 are positioned and connected with the connecting groove 111, the two end faces of the fixed cover plate 12 are in surface contact with the inner surfaces of the two side plates, making the connection between the fixed cover plate 12 and the retainer 11 very stable.

[0042] Please refer to Figure 2 In this embodiment, the connecting block 121 and the fixing cover plate 12 are integrally formed structures, and the two side surfaces of the connecting block 121 are flush with the two side surfaces of the fixing cover plate 12 (i.e., Figure 2The upper and lower surfaces of the connecting block 121 and the fixed cover plate 12 are provided. A first groove 1211 is provided at the edge between the end faces of the connecting block 121 and the fixed cover plate 12, and a second groove 1111 is provided at the two sides of the inner edge of the connecting groove 111. This can improve the accuracy of the connection between the connecting block 121 and the connecting groove 111, and prevent the connection between the two from being incomplete due to poor processing at the edge.

[0043] Please refer to Figure 1 and Figure 2 In this embodiment, the coil module 13 includes a fixing frame 131, on which a positioning protrusion 132 is provided. The end face of the fixing cover plate 12 is provided with a positioning recess 122 for positioning and engaging with the positioning protrusion 132. Through the engagement of the positioning protrusion 132 and the positioning recess 122, the stability of the connection between the coil module 13 and the fixing cover plate 12 and the retainer 11 can be improved, and the assembly efficiency can also be improved.

[0044] Please refer to Figure 3 In this embodiment, a valve cavity is provided at the position opposite to the sleeve 16 of the valve body 15. The sleeve 16 extends and connects to the valve cavity. A first sealing ring 191 is provided between the outer periphery of the sleeve 16 and the inner wall of the valve cavity. A second sealing ring 192 is provided between the outer periphery of the stationary iron core 14 and the inner wall surface of the sleeve 16, which can ensure the sealing of the valve cavity.

[0045] Please refer to Figure 3 Optionally, the solenoid valve in this embodiment can be a two-way solenoid valve. The valve body 15 is provided with a first delivery hole 152 and a second delivery hole 153 that connect the valve cavity and the external space, and a valve core seat 151 that connects the first delivery hole 152 and the second delivery hole 153 is provided in the valve cavity.

[0046] More specifically, the moving iron core structure 17 includes a moving iron core body 171 and a first sealing plug 172. The first sealing plug 172 is connected to the end of the moving iron core body 171 near the valve core seat 151, and the valve core seat 151 is located on the sliding trajectory of the first sealing plug 172. The moving iron core structure 17 slides between the stationary iron core 14 and the valve core seat 151, and the first sealing plug 172 is used to seal the valve core seat 151.

[0047] In addition, a blind hole 1711 is provided at the end of the moving iron core body 171 away from the valve core seat 151. When the moving iron core body 17 slides towards the stationary iron core 14, the blind hole 1711 can reduce the air pressure between the two.

[0048] Please refer to Figure 4Optionally, the solenoid valve in this embodiment can also be a three-way solenoid valve. The valve body 15 is provided with a first delivery hole 152 and a second delivery hole 153 that connect the valve cavity and the external space, the stationary iron core 14 is provided with a third delivery hole 141, and the valve core seat 151 that connects the first delivery hole 152 and the second delivery hole 153 is provided in the valve cavity.

[0049] The moving iron core structure 27 includes a moving iron core body 271 and a first sealing plug 272 and a second sealing plug 273 connected to both ends of the moving iron core body 271. The valve core seat 151 is located on the sliding track of the first sealing plug 272, and the third conveying hole 141 is located on the sliding track of the second sealing plug 273. The first sealing plug 272 is used to close the valve core seat 151, and the second sealing plug 273 is used to close the third conveying hole 141.

[0050] The moving iron core body 271 is provided with a mounting groove, and a spring 274 is provided in the mounting groove. The two ends of the spring 274 are in contact with the first sealing plug 272 and the second sealing plug 273 respectively. The spring 274 can be used to buffer the impact between the first sealing plug 272 and the valve core seat 151, and to buffer the impact between the second sealing plug 273 and the stationary iron core 14, reducing the impact force. This makes it less likely to cause damage to the first sealing plug 272 and the second sealing plug 273, resulting in high durability and long service life.

[0051] The moving iron core body 271 has a through hole 2711 on its side. The through hole 2711 connects the mounting groove and the inner cavity of the sleeve 16, which can prevent the pressure in the mounting groove from being too high, which would be detrimental to the elastic sliding of the first sealing plug 272 and the second sealing plug 273.

[0052] When the coil module 13 is not energized, the elastic element 18 drives the moving iron core structure 27 to move closer to the valve core seat 151, causing the first sealing plug 272 to close the valve core seat 151. At this time, the second conveying hole 153 and the third conveying hole 141 are connected. When the coil module 13 is energized, the stationary iron core 14 generates an electromagnetic force that attracts the moving iron core structure 17 to move closer to the stationary iron core 14, causing the second sealing plug 273 to close the third conveying hole 141. At this time, the first conveying hole 152 and the second conveying hole 153 are connected.

[0053] When assembling the solenoid valve of this utility model, the stationary iron core 14 and the fixed cover plate 12 are first riveted together, and then the sleeve 16 is connected to the stationary iron core 14. The coil module 13 is sleeved on the outer periphery of the sleeve 16, the sleeve 16 passes through the retainer 11, and the fixed cover plate 12 is riveted to the retainer 11, so that the coil module 13 is limited between the fixed cover plate 12 and the retainer 11. Finally, the valve body 15 is connected to the retainer 11, which simultaneously fixes the sleeve 16 between the fixed cover plate 12 and the valve body 15. The connection is very stable, the overall manufacturing and assembly are easier, the assembly efficiency is high, and the manufacturing cost is low.

[0054] This completes the assembly process of the solenoid valve of this preferred embodiment, which is easy to manufacture and assemble.

[0055] In this preferred embodiment, the coil module of the solenoid valve, which is easy to manufacture and assemble, is connected to the cage in an assembled manner. The coil module does not need to be integrated with the cage by injection molding. At the same time, the stationary iron core is riveted to the fixed cover plate, and the valve body is fixedly connected to the cage. This can limit the sleeve between the stationary iron core and the valve body, reduce the connection structure, make the overall manufacturing and assembly easier, improve production efficiency, and reduce manufacturing costs.

[0056] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.

Claims

1. A solenoid valve that is easy to manufacture and assemble, characterized in that, include: Cage, fixed cover plate, coil module, stationary iron core, moving iron core structure, elastic element, sleeve and valve body; The stationary iron core is fixedly connected to one end inside the sleeve, and the stationary iron core extends out of the sleeve and is riveted to the fixed cover plate. The moving iron core structure is slidably disposed inside the sleeve, and the elastic element is connected between the stationary iron core and the moving iron core structure. The coil module is sleeved on the outer periphery of the sleeve, the fixed cover plate is riveted to the retainer, the coil module is limited between the fixed cover plate and the retainer, the valve body is fixedly connected to the side of the retainer away from the fixed cover plate, the end of the sleeve away from the fixed cover plate passes through the retainer, and the sleeve is limited between the fixed cover plate and the valve body.

2. The solenoid valve for easy manufacturing and assembly according to claim 1, characterized in that, The retainer has a U-shaped structure and includes a middle plate and side plates connected to both ends of the middle plate. The fixing cover is riveted to the two side plates.

3. The solenoid valve for easy manufacturing and assembly according to claim 2, characterized in that, The side plate has a connecting groove at its end, and the fixed cover plate has connecting blocks at both ends for positioning and engaging with the connecting groove. The thickness of the connecting block is less than the depth of the connecting groove, so that the fixed cover plate can rivet and fix the connecting block. When the connecting block is positioned and connected with the connecting groove, the two end faces of the fixed cover plate are in surface contact with the inner surfaces of the two side plates respectively.

4. The solenoid valve for easy manufacturing and assembly according to claim 3, characterized in that, The connecting block and the fixing cover plate are integrally formed. The two side surfaces of the connecting block are flush with the two side surfaces of the fixing cover plate. A first groove is provided at the edge between the end faces of the connecting block and the fixing cover plate. A second groove is provided at the two side edges inside the connecting groove.

5. The solenoid valve according to claim 1, characterized in that, The coil module includes a fixing frame with a positioning protrusion on the fixing frame, and a positioning recess on the end face of the fixing cover plate for positioning and engaging with the positioning protrusion.

6. The solenoid valve according to claim 1, characterized in that, A valve cavity is provided at a position opposite to the sleeve of the valve body. The sleeve extends and connects to the valve cavity. A first sealing ring is provided between the outer periphery of the sleeve and the inner wall of the valve cavity. A second sealing ring is provided between the outer periphery of the stationary iron core and the inner wall surface of the sleeve.

7. The solenoid valve according to claim 6, characterized in that, The valve body is provided with a first delivery hole and a second delivery hole that connect the valve cavity and the external space, and a valve core seat that connects the first delivery hole and the second delivery hole is provided inside the valve cavity; The moving iron core structure includes a moving iron core body and a first sealing plug. The first sealing plug is connected to one end of the moving iron core body near the valve core seat. The valve core seat is located on the sliding trajectory of the first sealing plug. A blind hole is provided at one end of the moving iron core body away from the valve core seat.

8. The solenoid valve according to claim 6, characterized in that, The valve body is provided with a first conveying hole and a second conveying hole that connect the valve cavity and the external space, the stationary iron core is provided with a third conveying hole, and the valve core seat that connects the first conveying hole and the second conveying hole is provided inside the valve cavity; The moving iron core structure includes a moving iron core body and a first sealing plug and a second sealing plug connected to both ends of the moving iron core body. The valve core seat is located on the sliding trajectory of the first sealing plug, and the third conveying hole is located on the sliding trajectory of the second sealing plug.

9. The solenoid valve according to claim 8, characterized in that, The moving iron core body has a through-hole through which a spring is installed. The two ends of the spring are in contact with the first sealing plug and the second sealing plug, respectively. The side of the moving iron core body has a through hole that connects the mounting groove and the inner cavity of the sleeve.

10. The solenoid valve according to claim 1, characterized in that, The screw passes through the valve body and is threadedly connected to the cage.

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