High-stability electromagnetic valve assembly

Abstract

The utility model discloses a high-stability electromagnetic valve assembly which comprises a valve seat, a valve core, a valve core, a valve core, a valve core, a valve core, a valve core, a valve core and an electromagnetic valve core, the valve seat is provided with a working port, and the upper end of the working port communicates with a runner; the valve element is arranged above the working port, the valve element is sleeved with a sealing ring, the valve element moves downwards to drive the sealing ring to have a position for sealing the working port, and the valve element moves upwards to drive the sealing ring to have a position for opening the working port; an extending part surrounding the circumferential surface of the valve element is arranged on the end face of the lower portion of the sealing ring, the extending part extends downwards, and the inner side of the extending part is tightly attached to the circumferential surface of the valve element. The utility model relates to the technical field of electromagnetic valves.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valves, and more specifically to a highly stable electromagnetic valve component. Background Art

[0002] The solenoid valve is one of the essential parts of automobile products, and its main function is to realize the on-off function of the pipeline. The existing solenoid valve includes a moving iron core, a coil, a static iron core, a valve core and a valve seat. The valve seat has a working port and a flow channel. The working port is connected to the flow channel. The valve core is provided with a sealing ring. The moving iron core is connected to the valve core in a transmission manner. The coil is arranged on the outside of the moving iron core. When the coil is energized, the moving iron core can move to drive the sealing ring to seal the working port.

[0003] The existing sealing ring is generally mounted on the outside of the valve core. After long-term use, the sealing ring is easily deformed, and a gap appears between the inner side of the sealing ring and the valve core, reducing the sealing effect of the sealing ring. When the sealing ring seals the working port, the medium can pass through the gap, causing the device to fail to operate normally. Utility Model Content

[0004] In view of the shortcomings and defects of the prior art, a solenoid valve assembly with good sealing performance and reliable operation is provided.

[0005] A highly stable solenoid valve assembly, comprising:

[0006] A valve seat, wherein the valve seat is provided with a working port, and an upper end of the working port is communicated with the flow channel;

[0007] The valve core is arranged above the working port, and the valve core sleeve is provided with a sealing ring. When the valve core moves downward, the sealing ring is driven to have a position to seal the working port, and when the valve core moves upward, the sealing ring is driven to have a position to open the working port;

[0008] The lower end surface of the sealing ring is provided with an extension portion surrounding the circumference of the valve core, the extension portion is arranged to extend downward, and the inner side of the extension portion is in close contact with the circumference of the valve core.

[0009] After adopting the above structure, the high-stability solenoid valve assembly of the utility model has the following advantages compared with the prior art:

[0010] An extension portion extending downward is arranged on the inner side of the lower end surface of the sealing ring. The inner side of the extension portion is in close contact with the peripheral surface of the valve core to play a sealing role, preventing the medium from entering, improving the sealing between the inner periphery of the sealing ring and the valve core, and making the device highly reliable in operation.

[0011] As an improvement of the present invention, the extension portion and the sealing ring are integrally formed.

[0012] As an improvement of the present utility model, the inner diameter of the extension part is gradually reduced from top to bottom;

[0013] A contact surface is provided on the circumferential surface of the valve core corresponding to the inner circumference of the extension part. The diameter of the contact surface gradually decreases from top to bottom, and the contact surface fits with the inner circumference of the extension part.

[0014] As an improvement of the present utility model, the outer diameter of the extension part is gradually reduced from top to bottom to form an inclined guiding surface.

[0015] As an improvement of the present utility model, a circular flange is provided above the working port, and the circular flange surrounds the working port.

[0016] The upper end of the circular flange is gradually thinned, and the upper end surface of the circular flange is arranged opposite to the middle position of the lower end surface of the sealing ring.

[0017] As an improvement of the present utility model, a pipe sleeve is sleeved on the valve core. A receiving space is formed between the inner wall of the pipe sleeve and the circumferential surface of the valve core, and the sealing ring is placed in the receiving space.

[0018] As an improvement of the present utility model, the bottom edge of the pipe sleeve is bent inward to form a supporting part, and the supporting part forms a blocking fit with the lower edge of the sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present utility model.

[0020] Figure 2 is a schematic cross-sectional structural diagram of the present utility model.

[0021] Figure 3 is the Figure 2 schematic enlarged view of the structure at A in the present utility model.

[0022] Figure 4 schematic structural diagram after the valve core and the sealing ring are assembled.

[0023] Figure 5 schematic diagram of the valve core and the sealing ring in the exploded state of the components.

[0024] As shown in the figure: 1. Valve seat; 1.1 Working port; 1.11 Circular flange; 1.2 Flow channel; 1.3 Connecting column; 2. Valve core; 2.1 Contact surface; 2.2 Groove; 3. Sealing ring; 3.1 Extension part; 3.11 Guiding surface; 4. Pipe sleeve; 4.1 Supporting part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] Please refer to Figures 1-5 as shown, a highly stable solenoid valve assembly, comprising:

[0027] a valve seat 1, the valve seat 1 is provided with a working port 1.1, and the upper end of the working port 1.1 is communicated with a flow channel 1.2;

[0028] a valve core 2, the valve core 2 is arranged above the working port 1.1, a sealing ring 3 is sleeved on the valve core 2, when the valve core 2 moves downward, the sealing ring 3 is driven to have a position for sealing the working port 1.1, and when the valve core 2 moves upward, the sealing ring 3 is driven to have a position for opening the working port 1.1;

[0029] a lower end face of the sealing ring 3 is provided with an extension portion 3.1 surrounding the circumferential surface of the valve core 2, the extension portion 3.1 extends downward, and the inner side of the extension portion 3.1 is closely attached to the circumferential surface of the valve core 2.

[0030] Among them, the working port 1.1 can be an opening centered on a circle, the sealing ring 3 is sleeved on the lower end of the valve core 2, the lower end of the valve core 2 can be a closed structure, when the position near the outer side of the lower end face of the sealing ring 3 contacts the working port 1.1, it forms a seal for the outer region of the working port 1.1, and between the lower end of the valve core 2 and the sealing ring 3, it forms a seal for the inner region of the working port 1.1;

[0031] In this application, the flow channel 1.2 is arranged above the working port 1.1, the working port 1.1 is an opening centered on a circle, a connecting column 1.3 is arranged inside the working port 1.1, a connecting hole is arranged at the lower part of the valve core 2 and is sleeved outside the connecting column 1.3, and a tight fit is formed between the connecting column 1.3 and the connecting hole to form a seal,

[0032] the sealing ring 3 is sleeved on the lower part of the valve core 2, and a seal is formed between the inner ring of the sealing ring 3 and the circumferential surface of the valve core 2;

[0033] the position near the outer side of the lower end face of the sealing ring 3 cooperates with the upper end edge of the working port 1.1. When the valve core 2 moves downward, after the lower end face of the sealing ring 3 contacts the upper end edge of the working port 1.1, it seals the working port 1.1 to cut off the communication between the working port 1.1 and the flow channel 1.2, and after separating from the contact, a communication is formed between the upper end of the working port 1.1 and the flow channel 1.2.

[0034] at the position inside the lower end face of the sealing ring 3, an extension portion 3.1 extending downward is arranged. After the inner side of the extension portion 3.1 is closely attached to the circumferential surface of the valve core 2, it plays a sealing role to prevent the medium from entering, improves the sealing performance between the inner circumference of the sealing ring 3 and the valve core 2, and makes the device operate with high reliability.

[0035] Please refer to Figure 3As shown, the extension part 3.1 and the sealing ring 3 are integrally formed. The integrally formed structure can be formed by using the integral forming process, which is convenient for production and manufacturing. Moreover, the integrally formed structure has the characteristics of good sealing performance, high structural strength, not easy to deform, reliable operation, and long service life.

[0036] The inner diameter of the extension part 3.1 is gradually reduced from top to bottom;

[0037] On the circumferential surface of the valve core 2, a contact surface 2.1 is provided corresponding to the inner circumference of the extension part 3.1. The diameter of the contact surface 2.1 gradually decreases from top to bottom, and the contact surface 2.1 fits with the inner circumference of the extension part 3.1.

[0038] After the above improvement, after the inclined slope on the inner side of the extension part 3.1 fits with the inclined contact surface 2.1, the degree of tight fit is high, further improving the sealing performance.

[0039] Please refer to Figure 3 As shown, the outer diameter of the extension part 3.1 is gradually reduced from top to bottom to form an inclined diversion surface 3.11. The inclined diversion surface 3.11 faces the working port 1.1, which can play a role in diverting the medium discharged from the working port 1.1, preventing the extension part 3.1 from being forced to turn outwards greatly, and making the device operate reliably.

[0040] Please refer to Figure 3 As shown, an annular flange 1.11 is provided above the working port 1.1, and the annular flange 1.11 surrounds the working port 1.1.

[0041] The upper end of the annular flange 1.11 is gradually thinned, and the upper end surface of the annular flange 1.11 is opposite to the middle position of the lower end surface of the sealing ring 3.

[0042] The annular flange 1.11 is located in the flow channel 1.2, and the annular flange 1.11 surrounds the upper end of the working port 1.1. The upper end of the working port 1.1 is communicated with the flow channel 1.2 through the inner side area of the annular flange 1.11;

[0043] The annular flange 1.11 is gradually thinned from bottom to top to form an upper end with a smaller cross-section. Its upper end surface is opposite to the middle position of the lower end surface of the sealing ring 3. When the valve core 2 moves downward, the lower end surface of the sealing ring 3 contacts and abuts against the upper end surface of the annular flange 1.11 to form a seal for the working port 1.1. Since the contact area 2.1 is small and the stress is concentrated, each contact area between the upper end surface of the annular flange 1.11 and the center position of the lower end surface of the sealing ring 3 can maintain effective abutting contact, and there will be no gap between the contact surfaces 2.1, making the sealing effect reliable.

[0044] Please refer to Figures 3-5As shown, a sleeve 4 is sleeved on the valve core 2. A receiving space is formed between the inner wall of the sleeve 4 and the circumferential surface of the valve core 2, and the sealing ring 3 is placed in the receiving space.

[0045] An annular groove is provided at the lower end of the valve core 2. The sealing ring 3 is located in the groove 2.2. The upper end of the sleeve 4 is connected to the circumferential surface of the valve core 2 by means of buckling or welding. A receiving space is formed between the sleeve 4 and the groove 2.2 to accommodate the sealing ring 3. The receiving space plays a role in limiting the sealing ring 3, effectively preventing the displacement of the sealing ring 3 and keeping it in the preset assembly position, further improving the reliability of the device operation and extending the service life.

[0046] The bottom edge of the sleeve 4 is bent inward to form a supporting portion 4.1, and the supporting portion 4.1 forms a blocking fit with the lower edge of the sealing ring 3.

[0047] The supporting portion 4.1 supports the lower edge of the sealing ring 3. The upper end surface of the groove abuts against the upper end surface of the sealing ring 3. The bottom wall of the groove contacts the inner ring of the sealing ring 3. The inner wall of the sleeve contacts the outer ring of the sealing ring 3. After the above improvements, the limiting effect of the receiving space on the sealing ring 3 is better.

[0048] 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 noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A highly stable solenoid valve assembly, characterized in that, Comprising: A valve seat (1), the valve seat (1) is provided with a working port (1.1), and the upper end of the working port (1.1) is communicated with a flow channel (1.2); A valve core (2), the valve core (2) is arranged above the working port (1.1), a sealing ring (3) is sleeved on the valve core (2), when the valve core (2) moves downward, the sealing ring (3) is driven to have a position for sealing the working port (1.1), and when the valve core (2) moves upward, the sealing ring (3) is driven to have a position for opening the working port (1.1); A lower end face of the sealing ring (3) is provided with an extension portion (3.1) surrounding the circumferential surface of the valve core (2), the extension portion (3.1) extends downward, and the inner side of the extension portion (3.1) is closely attached to the circumferential surface of the valve core (2).

2. The highly stable solenoid valve assembly according to claim 1, wherein: The extension portion (3.1) is arranged at a position close to the inner circumference of the lower part of the sealing ring (3), and the extension portion (3.1) and the sealing ring (3) are integrally formed.

3. A highly stable solenoid valve assembly according to claim 1, characterized in that: The inner diameter of the extension portion (3.1) is gradually reduced from top to bottom; A contact surface (2.1) is arranged on the circumferential surface of the valve core (2) corresponding to the inner circumference of the extension portion (3.1), the diameter of the contact surface (2.1) is gradually reduced from top to bottom, and the contact surface (2.1) is in fit with the inner circumference of the extension portion (3.1).

4. A highly stable solenoid valve assembly according to claim 1, characterized in that: The outer diameter of the extension portion (3.1) is gradually reduced from top to bottom to form an inclined flow guiding surface (3.11).

5. A highly stable solenoid valve assembly according to claim 1, characterized in that: An annular flange (1.11) is arranged above the working port (1.1), and the annular flange (1.11) surrounds the working port (1.1); The upper end of the annular flange (1.11) is gradually thinned, and the upper end surface of the annular flange (1.11) is arranged opposite to the middle position of the lower end surface of the sealing ring (3).

6. A highly stable solenoid valve assembly according to claim 1, characterized in that: A bushing (4) is sleeved on the valve core (2), a accommodating space is formed between the inner wall of the bushing (4) and the circumferential surface of the valve core (2), and the sealing ring (3) is placed in the accommodating space.

7. A highly stable solenoid valve assembly according to claim 6, characterized in that: A bottom edge of the bushing (4) is bent inward to form a supporting portion (4.1), and the supporting portion (4.1) forms a blocking fit with a lower edge of the sealing ring (3).

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