Sealing structure of electromagnetic valve element assembly and electromagnetic valve

Abstract

The utility model relates to the technical field of electromagnetic valve products, in particular to a sealing structure of an electromagnetic valve element assembly and an electromagnetic valve. The sealing structure of the electromagnetic valve element assembly comprises a base, a first sealing ring and a housing, a protruding edge is arranged on the upper surface of the base in the circumferential direction, the electromagnetic valve element assembly is fixedly installed on the upper surface of the base and located on the inner side of the protruding edge, and the first sealing ring is arranged on the butt joint face between the protruding edge and the housing. The first sealing ring is in interference fit with the outer side of the convex edge, and the first sealing ring is in interference fit with the inner side of the housing, so that the reliable sealing performance of the electromagnetic valve is ensured while the disassembly and assembly are easy, the service life of the electromagnetic valve is prolonged, and the use experience feeling of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valve products, in particular to a sealing structure of an electromagnetic valve core component and an electromagnetic valve. Background Art

[0002] A solenoid valve is an electrically controlled valve that generates magnetic force through an electromagnetic coil to drive the valve to open or close. Solenoid valves are usually used in fluid control systems to open or close the flow of fluid media (such as water, air, oil, etc.). Solenoid valves are mainly composed of solenoid valve core components, seals, and housings.

[0003] In the sealing structure of conventional solenoid valve core assemblies, most of them use simple bolts and nuts to fix the shell and the base, so as to ensure a certain sealing performance and achieve the technical effect of easy disassembly and assembly. However, in the actual use of the solenoid valve, since the installation location of the solenoid valve is usually close to the water source and the humidity is relatively high, water vapor can easily penetrate into the shell from the connection of the sealing structure of the solenoid valve core assembly and the wire connection hole between the solenoid valve core assembly and the external controller, causing corrosion of the solenoid valve core assembly, thereby causing damage to the solenoid valve control part and affecting the normal operation of the valve. Moreover, the seals in the conventional sealing structure (such as bolts, nuts, metal gaskets, etc.) will also be affected by the high humidity environment and accelerate rust and aging, thereby causing sealing failure and reducing the service life of the solenoid valve. Users need to repair the solenoid valve core assembly and replace the seals more frequently, which greatly reduces the user experience. Utility Model Content

[0004] To this end, the utility model proposes a sealing structure of a solenoid valve core assembly and a solenoid valve, which aims to facilitate disassembly and assembly while ensuring reliable sealing performance of the solenoid valve, increasing the service life of the solenoid valve, and improving the user experience.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a sealing structure of an electromagnetic valve core assembly, comprising a base, a first sealing ring and a cover shell, the upper surface of the base is circumferentially provided with a convex edge, the electromagnetic valve core assembly is fixedly installed on the upper surface of the base, the electromagnetic valve core assembly is located on the inner side of the convex edge, the first sealing ring is arranged on the docking surface between the convex edge and the cover shell, the first sealing ring is interference fit with the outer side of the convex edge, and the first sealing ring is interference fit with the inner side of the cover shell.

[0006] Preferably, an L-shaped step is protruding outward from the bottom end of the cover shell, the first sealing ring is interference fit with the inner side of the side of the L-shaped step, and the convex edge is in contact with the step surface of the L-shaped boss.

[0007] Preferably, the convex edge is arranged at a position at a preset distance from the edge of the base, and the side surface of the L-shaped step abuts against the base.

[0008] Preferably, a via is provided on the base, the via is located on the inner side of the convex edge, the via is used to pass the wiring harness of the solenoid valve core assembly, a second sealing ring is provided on the wiring harness, and the second sealing ring is interference fit with the via.

[0009] Preferably, a first bayonet is provided at the front end of the second sealing ring, and the first bayonet is interference fit with the through hole. A second bayonet is provided on the second sealing ring, and the second bayonet is located below the first bayonet. The distance between the second bayonet and the first bayonet matches the axial length of the through hole.

[0010] Preferably, the side surface of the first bayonet (601) is in the shape of an inclined surface and is arranged radially outward from an end of the first bayonet (601) close to the front end of the second sealing ring (6).

[0011] Preferably, the interference compression ratio between the second sealing ring and the through hole is 25% to 30%, and the interference compression ratio between the first bayonet and the through hole is 35% to 40%.

[0012] Preferably, the interference compression ratio between the housing and the first sealing ring is 25% to 30%, and the interference compression ratio between the flange and the first sealing ring is 25% to 30%.

[0013] Preferably, the first sealing ring and the second sealing ring are both made of rubber material.

[0014] A solenoid valve comprises: a water inlet pipe, a water outlet pipe, a solenoid valve core assembly and the aforementioned sealing structure;

[0015] The electromagnetic valve core assembly is sealed and fixed by the sealing structure and installed on the water inlet pipe and the water outlet pipe. The electromagnetic valve core assembly is used to realize the connection and disconnection between the water inlet pipe and the water outlet pipe.

[0016] The beneficial technical effects of the utility model include at least: adopting a sealing structure of a solenoid valve core assembly and a solenoid valve, through the interference fit between the first sealing ring and the convex edge of the base and the cover shell, not only can the technical effect of easy disassembly and assembly be achieved, but also ensuring that a barrier channel is formed at the connection between the base and the cover shell, thereby preventing water vapor from entering the interior of the cover shell from the connection and corroding the solenoid valve core assembly, achieving the reliable sealing and waterproofing function of the sealing structure for the solenoid valve core assembly, improving the corrosion resistance of the solenoid valve, increasing the service life of the solenoid valve, and improving the user experience.

[0017] Other features and advantages of the present invention will be disclosed in detail in the following specific implementations and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the sealing structure of the solenoid valve core assembly according to an embodiment of the utility model.

[0020] Figure 2 It is a schematic diagram of the sealing structure of the solenoid valve core assembly according to an embodiment of the utility model.

[0021] Figure 3 It is a schematic diagram of the sealing structure of the solenoid valve core assembly according to an embodiment of the utility model.

[0022] Figure 4 It is a cross-sectional view of the sealing structure of the solenoid valve core assembly according to an embodiment of the utility model.

[0023] Figure 5 It is a schematic structural diagram of the second sealing ring of an embodiment of the utility model.

[0024] Figure 6 It is a schematic diagram of the overall structure of the solenoid valve according to an embodiment of the utility model.

[0025] Wherein: 1. solenoid valve core assembly, 2. base, 201. convex edge, 202. through hole, 3. first sealing ring, 4. cover shell, 401. side surface of L-shaped step, 402. step surface of L-shaped boss, 5. wiring harness, 6. second sealing ring, 601. first bayonet, 602. second bayonet, 7. water inlet pipe, 8. water outlet pipe. DETAILED DESCRIPTION

[0026] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0027] In the following description, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate directions or positional relationships are only used to facilitate the description of the embodiments and simplify the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction. Therefore, it should not be understood as a limitation on the present invention.

[0028] Please refer to the attached Figure 1 , Figure 1 A schematic diagram of the sealing structure of a solenoid valve core assembly provided in one embodiment of the present specification is shown.

[0029] like Figure 1As shown, the sealing structure of the solenoid valve core assembly 1 may at least include a base 2, a first sealing ring 3 and a cover shell 4. Among them: the upper surface of the base 2 is circumferentially provided with a convex edge 201, the solenoid valve core assembly 1 is fixedly installed on the upper surface of the base 2, the solenoid valve core assembly 1 is located on the inner side of the convex edge 201, the first sealing ring 3 is arranged on the docking surface between the convex edge 201 and the cover shell 4, the first sealing ring 3 is interference fit with the outer side of the convex edge 201, and the first sealing ring 3 is interference fit with the inner side of the cover shell 4.

[0030] It can be understood that in this embodiment, the base 2 and the cover shell 4 are assembled by interference compression. Specifically, the first sealing ring 3 can be compressed by interference in the docking direction between the protrusion 201 and the cover shell 4 to form a blocking channel, thereby preventing water vapor from entering the interior of the cover shell 4 from the connection and corroding the solenoid valve core assembly 1.

[0031] The first sealing ring 3 has sufficient fatigue strength, that is, the first sealing ring 3 can withstand repeated pressure, tension or other forms of stress during long-term use without fatigue damage or failure, which helps to withstand the movement of the valve core and the pressure of the fluid medium. The first sealing ring 3 can be made of a soft elastic material (such as a rubber material) that is waterproof, corrosion-resistant, and wear-resistant, and this embodiment does not limit this.

[0032] Through the interference fit between the first sealing ring 3 and the convex edge 201 of the base 2 and the cover shell 4, not only can the technical effect of easy disassembly and assembly be achieved, but also a barrier channel is ensured to be formed at the connection between the base 2 and the cover shell 4, thereby preventing water vapor from entering the interior of the cover shell 4 from the connection and corroding the solenoid valve core assembly 1, thereby achieving the reliable sealing and waterproof function of the sealing structure for the solenoid valve core assembly, improving the corrosion resistance of the solenoid valve, increasing the service life of the solenoid valve, and improving the user experience.

[0033] On the other hand, in this embodiment, the interference compression ratio between the housing 4 and the first sealing ring 3 is 25% to 30%, and the interference compression ratio between the flange 201 and the first sealing ring 3 is 25% to 30%.

[0034] The interference compression ratio refers to the dimensional matching relationship between two mating parts during the assembly process. Specifically, it means that the size of the larger part (such as the cover 4 mentioned in this embodiment) and the smaller part (such as the first sealing ring 3 mentioned in this embodiment) are slightly larger than the size of the smaller part at the mating point. This size difference is called interference. The calculation formula of the interference compression ratio is usually: interference compression ratio = (large part diameter - small part diameter) / small part diameter × 100%.

[0035] For example, in this embodiment, the first sealing ring 3 is arranged on the butt joint surface between the flange 201 and the housing 4, the interference compression ratio between the housing 4 and the first sealing ring 3 is 25% to 30%, and the interference compression ratio between the flange 201 and the first sealing ring 3 is 25% to 30%, which means that the inner diameter of the housing 4 is about 25% to 30% larger than the outer diameter of the first sealing ring 3, and the inner diameter of the first sealing ring 3 is about 25% to 30% larger than the outer diameter of the flange 201. Such an interference fit can ensure that when the first sealing ring 3 is installed on the butt joint surface between the flange 201 and the housing 4, due to the existence of interference, the first sealing ring 3 will be compressed, and the flange 201 on the base 2 and the housing 4 will form a tight connection due to the existence of interference, which greatly improves the reliability of the seal.

[0036] The accurate fit between the components is ensured by the reasonable design of the interference compression ratio, and neither the assembly will be difficult due to excessive interference nor the first sealing ring 3 will be displaced or fall off due to too small interference.

[0037] Please see attached Figure 2 , Figure 2 A schematic diagram of the sealing structure of a solenoid valve core assembly provided in one embodiment of the present specification is shown.

[0038] like Figure 2 As shown, the bottom end of the cover shell 4 is provided with an L-shaped step protruding outward, the first sealing ring 3 is interference fit with the inner side of the side surface 401 of the L-shaped step, and the convex edge 201 is in contact with the step surface 402 of the L-shaped boss.

[0039] The side surface 401 of the L-shaped step refers to a side of the L-shaped step parallel to the convex edge 201 on the base 2 , and the step surface of the L-shaped step refers to a side of the L-shaped step parallel to the upper surface of the base 2 .

[0040] The abutment design of the L-shaped step and the convex edge 201 at the bottom end of the cover shell 4 increases the stability of the sealing structure, making the entire sealing structure more solid and able to withstand greater valve core movement and fluid medium pressure. At the same time, it can effectively prevent the first sealing ring 3 from shifting during assembly and use, ensuring that the first sealing ring 3 remains in the correct position.

[0041] Further, in this embodiment, please refer to the attached Figure 3 and attached Figure 4 The convex edge 201 is arranged at a position at a preset distance from the edge of the base 2 , and the side surface 401 of the L-shaped step abuts against the base 2 .

[0042] By setting the convex edge 201 at a certain distance from the edge of the base 2, a certain distance is left for the base 2 to abut against the side 401 of the L-shaped step at the bottom end of the cover shell 4, and the convex edge 201 is abutted against the step surface 402 of the L-shaped boss at the bottom end of the cover shell 4. At this time, the first sealing ring 3 is set on the docking surface between the convex edge 201 and the cover shell 4, which can form a tighter sealing environment, and avoid the displacement or falling off of the first sealing ring 3 during assembly and use to the greatest extent, further improve the sealing performance of the sealing structure, and at the same time increase the stability of the sealing structure, so that the entire sealing structure is more solid and can withstand greater valve core movement and fluid medium pressure.

[0043] In one embodiment of this specification, please refer to the attached Figure 1 A through hole 202 is provided on the base 2, and the through hole 202 is located on the inner side of the convex edge 201. The through hole 202 is used to pass the wiring harness 5 of the solenoid valve core assembly 1. The wiring harness 5 is provided with a second sealing ring 6, and the second sealing ring 6 is interference fit with the through hole 202.

[0044] It can be understood that the wiring harness 5 in this embodiment is used to achieve electrical connection between the solenoid valve core assembly 1 and the controller (or other devices such as a power supply module).

[0045] Through the interference fit between the second sealing ring 6 and the through hole 202, a blocking channel is formed at the through hole 202 of the wiring harness 5 on the base 2, thereby effectively preventing fluid or water vapor from invading the interior of the cover 4 from the through hole 202 of the wiring harness 5 and corroding the solenoid valve core assembly 1, further ensuring the reliable sealing and waterproof performance of the sealing structure for the solenoid valve core assembly, helping to improve the corrosion resistance of the solenoid valve, increase the service life of the solenoid valve, and enhance the user experience.

[0046] Please see attached Figure 5 , Figure 5 A schematic diagram of the sealing structure of a solenoid valve core assembly provided in one embodiment of the present specification is shown.

[0047] like Figure 5 As shown, compared to Figure 1 The embodiment shown in the figure adds: a first bayonet 601 is provided at the front end of the second sealing ring 6, the first bayonet 601 is interference fit with the through hole 202, a second bayonet 602 is provided on the second sealing ring 6, the second bayonet 602 is located below the first bayonet 601, and the distance between the second bayonet 602 and the first bayonet 601 matches the axial length of the through hole 202.

[0048] On the other hand, in this embodiment, the side surface of the first bayonet 601 is in the shape of an inclined surface and is radially arranged outward from an end of the first bayonet 601 close to the front end of the second sealing ring 6 .

[0049] It can be understood that, due to the interference fit between the first bayonet 601 and the through hole 202, the first bayonet 601 of the second sealing ring 6 can pass through the through hole 202 from under the base 2 during the assembly process. Since the second sealing ring 6 and the through hole 202 have an interference fit and the distance between the second bayonet 602 and the first bayonet 601 matches the axial length of the through hole 202, when the second sealing ring 6 part between the second bayonet 602 and the first bayonet 601 is assembled to the through hole 202, the sealing of the through hole 202 can be conveniently achieved. At the same time, the front end of the through hole 202 is abutted by the first bayonet 601, and the rear end of the through hole 202 is abutted by the second bayonet 602, providing a double sealing mechanism, which prevents fluid or water vapor from invading the inside of the cover 4 from corroding the solenoid valve core assembly 1 through the through hole 202 of the wiring harness 5 to the greatest extent, and further ensures the reliable sealing and waterproof performance of the sealing structure for the solenoid valve core assembly, which helps to improve the corrosion resistance of the solenoid valve, increase the service life of the solenoid valve, and improve the user's usage experience.

[0050] On the other hand, in this embodiment, the interference compression ratio between the second sealing ring 6 and the through hole 202 is 25% to 30%, and the interference compression ratio between the first bayonet 601 and the through hole 202 is 35% to 40%.

[0051] It can be understood that the design scheme of the interference compression ratio between the second sealing ring 6 and the through hole 202 and the interference compression ratio between the first bayonet 601 and the through hole 202 in this embodiment is similar to the design scheme of the interference compression ratio between the aforementioned cover 4 and the first sealing ring 3, and this embodiment will not be repeated here.

[0052] Please see attached Figure 6 , Figure 6 A schematic diagram of the overall structure of a solenoid valve provided in one embodiment of the present specification is shown.

[0053] like Figure 6 As shown, the solenoid valve may at least include: a water inlet pipe 7, a water outlet pipe 8, a solenoid valve core assembly 1 and the aforementioned sealing structure;

[0054] The electromagnetic valve core assembly 1 is sealed and fixed by a sealing structure and installed on the water inlet pipe 7 and the water outlet pipe 8 . The electromagnetic valve core assembly 1 is used to realize the connection and disconnection between the water inlet pipe 7 and the water outlet pipe 8 .

[0055] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification that does not deviate from the functional and structural principles of the utility model will be included in the scope of the claims.

Claims

1. A sealing structure of a solenoid valve core assembly, characterized in that: The invention comprises a base (2), a first sealing ring (3) and a cover shell (4); the upper surface of the base (2) is circumferentially provided with a convex edge (201); the solenoid valve core assembly (1) is fixedly mounted on the upper surface of the base (2); the solenoid valve core assembly (1) is located on the inner side of the convex edge (201); the first sealing ring (3) is arranged on the joint surface between the convex edge (201) and the cover shell (4); the first sealing ring (3) is interference fit with the outer side of the convex edge (201); and the first sealing ring (3) is interference fit with the inner side of the cover shell (4).

2. A sealing structure of a solenoid valve core assembly as claimed in claim 1, characterized in that: The bottom end of the cover shell (4) is provided with an L-shaped step protruding outward, the first sealing ring (3) is interference fit with the inner side of the side surface (401) of the L-shaped step, and the convex edge (201) is in contact with the step surface (402) of the L-shaped boss.

3. A sealing structure of a solenoid valve core assembly as claimed in claim 2, characterized in that: The convex edge (201) is arranged at a position at a preset distance from the edge of the base (2), and the side surface (401) of the L-shaped step abuts against the base (2).

4. The sealing structure of a solenoid valve core assembly according to claim 1, characterized in that: The base (2) is provided with a through hole, the through hole is located on the inner side of the convex edge (201), the through hole is used to pass the wiring harness (5) of the electromagnetic valve core assembly (1), and the wiring harness (5) is provided with a second sealing ring (6), and the second sealing ring (6) is interference fit with the through hole.

5. A sealing structure of a solenoid valve core assembly as claimed in claim 4, characterized in that: A first bayonet (601) is provided at the front end of the second sealing ring (6), and the first bayonet (601) is interference-fitted with the through hole. A second bayonet (602) is provided on the second sealing ring (6), and the second bayonet (602) is located below the first bayonet (601), and the distance between the second bayonet (602) and the first bayonet (601) matches the axial length of the through hole.

6. A sealing structure of a solenoid valve core assembly as claimed in claim 5, characterized in that: The side surface of the first bayonet (601) is in the shape of an inclined surface and is arranged radially outward from an end of the first bayonet (601) close to the front end of the second sealing ring (6).

7. A sealing structure of a solenoid valve core assembly as claimed in claim 6, characterized in that: The interference compression ratio between the second sealing ring (6) and the through hole is 25% to 30%, and the interference compression ratio between the first bayonet (601) and the through hole is 35% to 40%.

8. A sealing structure of a solenoid valve core assembly according to any one of claims 1 to 3, characterized in that: The interference compression ratio between the cover shell (4) and the first sealing ring (3) is 25% to 30%, and the interference compression ratio between the flange (201) and the first sealing ring (3) is 25% to 30%.

9. The sealing structure of a solenoid valve core assembly according to claim 4, characterized in that: The first sealing ring (3) and the second sealing ring (6) are both made of rubber material.

10. A solenoid valve, characterized in that: include: A water inlet pipe (7), a water outlet pipe (8), a solenoid valve core assembly (1), and a sealing structure as claimed in any one of claims 1 to 9; The electromagnetic valve core assembly (1) is sealed and fixed by the sealing structure and installed on the water inlet pipe (7) and the water outlet pipe (8); the electromagnetic valve core assembly (1) is used to realize the connection and disconnection between the water inlet pipe (7) and the water outlet pipe (8).

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