Solenoid valve assembly reliable in operation

Abstract

The utility model discloses an electromagnetic valve assembly which is good in sealing performance and reliable in operation, and comprises a valve seat, a valve core, a valve core and a valve core, the connecting seat is arranged above the valve seat, a flow channel communicated with the working port is formed between the connecting seat and the valve seat, and the connecting seat is provided with a connecting hole corresponding to the flow channel; the guide ring is connected to the connecting hole in an axial limiting manner, and a sealing ring is arranged between the guide ring and the connecting hole; the valve element penetrates through the guide ring, the periphery of the valve element is tightly combined with an inner hole of the guide ring, and the valve element can axially move relative to the guide ring, so that the sealing piece has a position matched with the working port; the utility model relates to the technical field of electromagnetic valves.

Description

Technical Field

[0001] The utility model relates to the technical field of solenoid valves, and more specifically to a solenoid valve assembly with reliable operation. Background Art

[0002] The solenoid valve is one of the essential components of automotive products, and its main function is to realize the on-off function of pipelines.

[0003] The existing solenoid valve includes a valve seat and a valve core movably connected to the connecting seat. The valve core can move so that the seal on the valve core has a position to close or open the working port.

[0004] A sealing ring is usually arranged between the connecting hole of the valve core and the connecting seat. The sealing ring seals the connecting hole to prevent the medium from passing through. The existing sealing ring is usually made of rubber material, which needs to be tightly combined with the outer circumference of the valve core and the inner wall of the connecting hole to play a sealing role. However, after being tightly combined, it will cause a large moving resistance of the valve core. When the torque for driving the valve core to move is small, the valve core is prone to jamming or poor operation failures. Summary of the Utility Model

[0005] Aiming at the deficiencies and defects of the existing technology, a solenoid valve assembly with good sealing performance and reliable operation is provided.

[0006] A solenoid valve assembly with reliable operation includes:

[0007] A valve seat, on which a working port is provided;

[0008] A connecting seat, which is arranged above the valve seat, and a flow channel communicating with the working port is formed between the connecting seat and the valve seat. The connecting seat is provided with a connecting hole corresponding to the flow channel;

[0009] A guiding ring with self-lubricating function, which is axially limited and connected to the connecting hole, and a sealing ring is arranged between the guiding ring and the connecting hole;

[0010] A valve core, which passes through the guiding ring. The outer circumference of the valve core is tightly combined with the inner hole of the guiding ring, and can axially move relative to the guiding ring so that the seal has a position to cooperate with the working port.

[0011] After adopting the above structure, the solenoid valve assembly with reliable operation of the present utility model has the following advantages compared with the existing technology:

[0012] When the valve core axially moves downward, the seal at the tail of the valve core can move along with the valve core, and the seal can obtain a position to seal the working port;

[0013] When the valve core axially moves upward, the seal can obtain a position to open the working port.

[0014] Wherein, a sealing ring and a guiding ring are arranged between the valve core and the connecting hole. The inner hole of the guiding ring is tightly combined with the outer periphery of the valve core, the inner periphery of the sealing ring is tightly combined with the outer periphery of the guiding ring, and the outer periphery of the sealing ring is tightly combined with the inner hole. The guiding ring and the sealing ring play a sealing role in the connecting hole to prevent the medium from passing through the connecting hole and improve the sealing performance.

[0015] The guiding ring contacts with the valve core. The guiding ring has a self-lubricating function and is made of a relatively hard material. Compared with the traditional structure where the sealing ring contacts the valve core, the moving resistance of the valve core is reduced, the valve core is prevented from being stuck, and the operation reliability is high.

[0016] As an improvement of the present utility model, the guiding ring is made of PTFE material.

[0017] As an improvement of the present utility model, a first annular groove is radially opened outward along the connecting hole, and the sealing ring and the guiding ring are arranged in the first annular groove.

[0018] As an improvement of the present utility model, chamfers are respectively arranged at the upper and lower end edges of the inner hole of the guiding ring, so that the length of the inner hole of the guiding ring is less than the length of the guiding ring.

[0019] As an improvement of the present utility model, chamfers are respectively arranged at the upper and lower end edges of the inner hole of the guiding ring, so that the areas of the upper and lower end faces of the guiding ring are reduced, and the upper and lower end faces of the guiding ring contact with the upper and lower wall surfaces of the first annular groove.

[0020] As an improvement of the present utility model, a second annular groove is radially opened inward along the outer periphery of the guiding ring, and the sealing ring is placed inside the second annular groove.

[0021] As an improvement of the present utility model, the sealing ring is made of rubber material. Description of the Drawings

[0022] Figure 1 is a schematic cross-sectional structure diagram of the present utility model.

[0023] Figure 2 is of the present utility model Figure 1 enlarged schematic diagram of the structure at A in

[0024] Figure 3 is of the present utility model Figure 1 schematic diagram of the structure of the components in the present utility model in the exploded state.

[0025] Figure 4 is a schematic diagram of the guiding ring structure of the present utility model.

[0026] Figure 5 is an implementation schematic diagram of the present utility model.

[0027] As shown in the figure: 1. Valve seat; 1.1 Working port; 2. Connecting seat; 2.1 Connecting hole; 2.11 First annular groove; 3. Flow channel; 4. Guide ring; 4.1 Chamfer; 4.2 Second annular groove; 5. Sealing ring; 6. Valve core; 7. Sealing element; 8. Moving iron core; 9. Push rod; 10. Coil assembly. Detailed implementation mode

[0028] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] Please refer to Figures 1-5 As shown, a solenoid valve assembly with reliable operation includes:

[0030] A valve seat 1, on which a working port 1.1 is provided;

[0031] A connecting seat 2, which is arranged above the valve seat 1, and a flow channel 3 communicating with the working port 1.1 is formed between the connecting seat 2 and the valve seat 1. The connecting seat 2 is provided with a connecting hole 2.1 corresponding to the flow channel 3;

[0032] A guide ring 4 with self-lubricating function, which is axially limited and connected to the connecting hole 2.1, and a sealing ring 5 is arranged between the guide ring 4 and the connecting hole 2.1;

[0033] A valve core 6, which passes through the guide ring 4, the outer periphery of the valve core 6 is tightly combined with the inner hole of the guide ring 4, and can axially move relative to the guide ring 4;

[0034] The valve core 6 is provided with a sealing element 7, and the valve core 6 axially moves so that the sealing element 7 has a position matching the working port 1.1.

[0035] When the valve core 6 axially moves downward, the sealing element 7 at the tail of the valve core 6 can move along with the valve core 6, and the sealing element 7 can obtain a position to seal the working port 1.1;

[0036] When the valve core 6 axially moves upward, the sealing element 7 can obtain a position to open the working port 1.1.

[0037] Among them, a sealing ring 5 and a guide ring 4 are arranged between the valve core 6 and the connecting hole 2.1. The inner hole of the guide ring 4 is tightly combined with the outer periphery of the valve core 6, the inner periphery of the sealing ring 5 is tightly combined with the outer periphery of the guide ring 4, and the outer periphery and the inner hole of the sealing ring 5 are tightly combined. The guide ring 4 and the sealing ring 5 play a sealing role in the connecting hole 2.1 to prevent the medium from passing through the connecting hole 2.1 and improve the sealing performance;

[0038] The guide ring 4 contacts the valve core 6. The guide ring 4 has the function of self-lubrication. The material of the guide ring is relatively hard. Compared with the traditional structure where the sealing ring 5 contacts the valve core 6, the moving resistance of the valve core 6 is reduced, the valve core 6 is prevented from being stuck, and the operation reliability is high.

[0039] As an improvement of the utility model, the guide ring is made of PTFE material. The guide ring made of PTFE material has the characteristics of wear resistance, high sealing performance, and self-lubrication.

[0040] Please refer to Figure 2 As shown, a first annular groove 2.11 is radially and outwardly formed in the connecting hole 2.1, and the sealing ring 5 and the guide ring 4 are arranged in the first annular groove 2.11.

[0041] By assembling the sealing ring 5 and the guide ring 4 in the first annular groove 2.11, the first annular groove 2.11 can axially limit the guide ring 4 and the sealing ring 5 to prevent them from following the movement of the valve core 6, which has the characteristics of simple structure, convenient manufacturing and assembly, and stable and reliable operation.

[0042] Please refer to Figures 2-3 As shown, chamfers 4.1 are respectively arranged at the upper and lower end edges of the inner hole of the guide ring 4, so that the length of the inner hole of the guide ring 4 is less than the length of the guide ring 4.

[0043] After the above improvement, the area of the inner hole of the guide ring 4 can be reduced, the contact area between the inner hole and the outer periphery of the valve core 6 can be reduced, and the movement resistance of the valve core 6 can be further reduced.

[0044] Please refer to Figures 2-3 As shown, chamfers 4.1 are respectively arranged at the upper and lower end edges of the inner hole of the guide ring 4, so that the areas of the upper and lower end faces of the guide ring 4 are reduced, and the upper and lower end faces of the guide ring 4 are in contact with the upper and lower wall surfaces of the first annular groove 2.11.

[0045] After the above improvement, after the areas of the upper and lower end faces of the guide ring 4 are reduced, the volume of the guide ring 4 can be reduced, and it can be more conveniently installed in the first annular groove 2.11, and the upper and lower end faces can also effectively contact with the first annular groove 2.11 to obtain the limiting effect.

[0046] Please refer to Figure 2 、 Figure 4 As shown, a second annular groove 4.2 is radially and inwardly formed in the outer periphery of the guide ring 4, and the sealing ring 5 is arranged inside the second annular groove 4.2.

[0047] After the above improvement, the inner circumference of the sealing ring 5 enters the second annular groove 4.2, effectively preventing the sealing ring 5 from shifting relative to the guide ring 4 and making the sealing effect stable and reliable.

[0048] The sealing ring 5 is made of rubber material. The sealing ring 5 made of rubber material has good elasticity and can closely adhere to the side wall of the connecting hole 2.1 and the side wall of the guide ring 4, so that the sealing performance is high and the sealing effect is stable and reliable.

[0049] Please refer to Figures 1-5As shown, in the present application, preferably, the connecting seat 2 is a static iron core. In addition, the solenoid valve further has a moving iron core 8, and the moving iron core 8 is arranged above the static iron core.

[0050] A push rod 9 is arranged at the upper end of the valve core 6 and passes through the static iron core to be connected with the moving iron core 8.

[0051] A coil assembly is arranged outside the moving iron core 8. After the coil assembly is powered on, it drives the valve core 6 to move downward. After the coil assembly is powered off, the spring drives the valve core 6 to reset.

[0052] The above is only the preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. A solenoid valve assembly with reliable operation, characterized in that, Comprising: A valve seat (1) provided with a working port (1.1) thereon. A connecting seat (2) disposed above the valve seat (1), and a flow passage (3) communicating with the working port (1.1) is formed between the connecting seat (2) and the valve seat (1). The connecting seat (2) is provided with a connecting hole (2.1) corresponding to the flow passage (3). A guiding ring (4) with self-lubricating function, axially limitedly connected to the connecting hole (2.1), and a sealing ring (5) is provided between the guiding ring (4) and the connecting hole (2.1). A valve core (6) passing through the guiding ring (4), the outer periphery of the valve core (6) is closely combined with the inner hole of the guiding ring (4), and can axially move relative to the guiding ring (4) so that the sealing member (7) has a position matching the working port (1.1).

2. The solenoid valve assembly with reliable operation according to claim 1, characterized in that: The guiding ring (4) is made of PTFE material.

3. A solenoid valve assembly with reliable operation according to claim 1, characterized in that: The connecting hole (2.1) is radially outwardly provided with a first annular groove (2.11), and the sealing ring (5) and the guiding ring (4) are disposed in the first annular groove (2.11).

4. The solenoid valve assembly with reliable operation according to claim 3, characterized in that: Chamfers (4.1) are respectively provided at the upper and lower end edge positions of the inner hole of the guiding ring (4) so that the length of the inner hole of the guiding ring (4) is less than the length of the guiding ring (4).

5. The solenoid valve assembly with reliable operation according to claim 3, characterized in that: Chamfers (4.1) are respectively provided at the upper and lower end edge positions of the inner hole of the guiding ring (4) so that the areas of the upper and lower end faces of the guiding ring (4) are reduced, and the upper and lower end faces of the guiding ring (4) are in contact with the upper and lower wall surfaces of the first annular groove (2.11).

6. A solenoid valve assembly with reliable operation according to claim 1, characterized in that: The outer periphery of the guiding ring (4) is radially inwardly provided with a second annular groove (4.2), and the sealing ring (5) is placed inside the second annular groove (4.2).

7. The solenoid valve assembly with reliable operation according to claim 1, characterized in that: The sealing ring (5) is made of rubber material.

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