Sealing ring of electromagnetic valve

Abstract

The utility model relates to the technical field of mechanical sealing, and discloses a sealing ring of an electromagnetic valve, which comprises a first sealing ring, a second sealing ring and a third sealing ring, the center of the bottom end of the first sealing ring is fixedly connected with the top end of the second sealing ring, and the center of the bottom end of the second sealing ring is fixedly connected with the top end of the third sealing ring. A microstructure is arranged on the surface of the first sealing ring and used for improving the sealing performance of the sealing ring, a self-compensation device is arranged in the first sealing ring and used for automatically adjusting the tension of the sealing ring, and a self-lubricating device is arranged in the second sealing ring and used for lubricating the sealing ring. And abrasion is reduced. According to the sealing gasket, the microstructure is arranged on the surface of the sealing ring, meanwhile, the self-lubricating mechanism is arranged in the second sealing ring, sealing is guaranteed, meanwhile, abrasion is reduced, the self-compensating device is arranged in the first sealing ring, and the sealing performance of the sealing gasket is kept all the time.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical seals, in particular to a sealing ring of a solenoid valve. Background Art

[0002] A sealing ring is an annular sealing element used to prevent leakage of liquids, gases or other substances. It is usually made of rubber, plastic, metal and other materials. Different materials have different properties and are suitable for different working environments and media.

[0003] The sealing ring of the solenoid valve is a key component installed at a specific position inside the solenoid valve to prevent the leakage of fluid (liquid, gas, etc.) during the operation of the solenoid valve. It is usually made of rubber (such as nitrile rubber, fluororubber, silicone rubber, etc.), polytetrafluoroethylene and other materials with good elasticity and sealing properties;

[0004] Existing solenoid valve sealing rings often use a separate rubber O-ring. During the operation of the solenoid valve, the frequent movement of the valve core and the flow of fluid will cause wear on the sealing ring. After long-term use, scratches and wear may appear on the surface of the sealing ring, resulting in a gradual decline in sealing performance. In addition, due to the lack of a self-lubricating structure, the sealing ring will generate a large friction force during the frequent contact and relative movement with the valve core of the solenoid valve. Over time, this friction force will cause the surface wear of the sealing ring and the valve core to intensify. Therefore, a sealing ring for a solenoid valve is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above deficiencies, the utility model provides a sealing ring of a solenoid valve, aiming to improve the problems in the prior art that the sealing performance of the sealing gasket gradually decreases and the lubrication structure is lacking.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A sealing ring for a solenoid valve, comprising a first sealing ring, a second sealing ring, and a third sealing ring, wherein the center positions of the first sealing ring, the second sealing ring, and the third sealing ring are each provided with a through hole, the bottom center of the first sealing ring being fixedly connected to the top of the second sealing ring, and the bottom center of the second sealing ring being fixedly connected to the top of the third sealing ring, the surface of the first sealing ring being provided with a microstructure, the microstructure being used to increase the sealing performance of the sealing ring, the interior of the first sealing ring being provided with a self-compensating device, the self-compensating device being used to automatically adjust the tension of the sealing ring, the interior of the second sealing ring being provided with a self-lubricating device, the self-lubricating device being used to lubricate the sealing ring to reduce wear;

[0008] As a further description of the above technical solution:

[0009] The microstructure includes microstructure protrusions, and the outer surface of the sealing ring is fixedly connected with multiple microstructure protrusions at equal intervals, and oil storage grooves are provided between the multiple microstructure protrusions;

[0010] As a further description of the above technical solution:

[0011] The self-compensating device includes a spring chamber, a plurality of spring chambers are equidistantly provided inside the sealing ring near the bottom end, an elastic spring is fixedly connected to the center of the rear end of the spring chamber, and the front end of the elastic spring is fixedly connected to the front end of the spring chamber;

[0012] As a further description of the above technical solution:

[0013] The self-lubricating device includes an oil storage chamber, the oil storage chamber is opened inside the sealing ring 2 near the front end, and the front end of the oil storage chamber is fixedly connected to a diaphragm;

[0014] As a further description of the above technical solution:

[0015] The opening of the oil storage chamber is in communication with the surface of the second sealing ring, and the diaphragm is fixedly connected to the outer surface of the second sealing ring;

[0016] As a further description of the above technical solution:

[0017] The sealing ring 1, sealing ring 2 and sealing ring 3 are all made of soft rubber material, and the surface of the sealing ring 3 is provided with micro-structure protrusions;

[0018] As a further description of the above technical solution:

[0019] The elastic spring is a metal spring.

[0020] The utility model has the following beneficial effects:

[0021] 1. In this utility model, the surface of the first seal ring is designed with tiny raised textures. These microstructures can increase the friction between the seal ring and the sealing surface, improving the sealing performance. At the same time, the oil storage chamber of the second seal ring stores lubricant, reducing the wear between the entire seal ring and the sealing surface.

[0022] 2. In the present invention, a sealing ring and a spring are integrated to form a sealing assembly with an automatic compensation function. When the sealing gasket vibrates or wears during operation, the elastic element can automatically adjust the sealing pressure of the sealing ring to ensure stable sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional schematic diagram of a sealing ring of a solenoid valve proposed by the present invention;

[0024] Figure 2This is a front structural diagram of a sealing ring of a solenoid valve proposed by the present invention;

[0025] Figure 3 for Figure 2 Schematic diagram of the cross section at AA in the middle;

[0026] Figure 4 for Figure 3 Enlarged view of point B in the middle.

[0027] Legend:

[0028] 1. Sealing ring 1; 2. Sealing ring 2; 3. Sealing ring 3; 4. Through hole; 5. Diaphragm; 6. Oil storage chamber; 7. Spring chamber; 8. Elastic spring; 9. Microstructure protrusion; 10. Oil storage tank. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Reference Figure 1 and Figure 2 The utility model provides an embodiment: a sealing ring of a solenoid valve, including a sealing ring 1, a sealing ring 2 and a sealing ring 3. The center positions of the sealing ring 1, the sealing ring 2 and the sealing ring 3 are all provided with a through hole 4. The surface of the sealing ring 1 is provided with a microstructure, and the microstructure is used to increase the sealing performance of the sealing ring. The microstructure includes a microstructure protrusion 9. The outer surface of the sealing ring 1 is equidistantly fixedly connected with a plurality of microstructure protrusions 9. An oil storage tank 10 is provided between the multiple microstructure protrusions 9. The oil storage tank 10 can automatically store lubricating oil between the surfaces of the workpieces.

[0031] The interior of the sealing ring 1 is provided with a self-compensating device, which is used to automatically adjust the tension of the sealing ring. The self-compensating device includes a spring chamber 7. A plurality of spring chambers 7 are evenly spaced at the bottom of the sealing ring 1. An elastic spring 8 is fixedly connected to the center of the rear end of the spring chamber 7. The front end of the elastic spring 8 is fixedly connected to the front end of the spring chamber 7. When the sealing gasket is worn and shortened, automatic compensation is achieved under the pressure of the elastic spring 8.

[0032] Reference Figure 3 and Figure 4A self-lubricating device is provided inside the sealing ring 2, which is used to lubricate the sealing ring and reduce wear. The self-lubricating device includes an oil storage chamber 6. The oil storage chamber 6 is opened at the front end of the sealing ring 2. The front end of the oil storage chamber 6 is fixedly connected to a diaphragm 5. A microstructured protrusion 9 is provided on the surface of the sealing ring 3. The diaphragm 5 can automatically open and close when the sealing gasket is squeezed.

[0033] Working principle: The sealing gasket is fixed on the solenoid valve stem through the through hole 4 as a whole. During operation, the microstructure protrusions 9 on the surface of the sealing ring 1 will increase the sealing effect with the valve body. After a period of use, the sealing ring 1 will be worn, causing the width of the sealing ring 1 to narrow. At this time, the elastic spring 8 in the spring chamber 7 will automatically compensate under the action of elastic stress, and the sealing ring 1 will always maintain its sealing performance. At the same time, when the sealing gasket is squeezed, the diaphragm 5 will automatically open and close due to the squeezing force, and the lubricating oil in the oil storage chamber 6 will automatically flow out to lubricate the sealing gasket under the opening and closing of the diaphragm 5, reducing wear. During reciprocating motion, the oil storage tank 10 will capture the lubricating oil remaining in the valve body. At the same time, the microstructure protrusions 9 at the bottom of the sealing ring 3 are higher than the sealing ring 2 and the sealing ring 3, ensuring the sealing performance of the sealing gasket.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sealing ring for a solenoid valve, comprising a sealing ring 1 (1), a sealing ring 2 (2) and a sealing ring 3 (3), characterized in that: The center positions of the sealing ring 1 (1), the sealing ring 2 (2) and the sealing ring 3 (3) are all provided with a through hole (4); the bottom center of the sealing ring 1 (1) is fixedly connected to the top of the sealing ring 2 (2); the bottom center of the sealing ring 2 (2) is fixedly connected to the top of the sealing ring 3 (3); the surface of the sealing ring 1 (1) is provided with a microstructure, and the microstructure is used to increase the sealing performance of the sealing ring; the interior of the sealing ring 1 (1) is provided with a self-compensating device, and the self-compensating device is used to automatically adjust the tension of the sealing ring; the interior of the sealing ring 2 (2) is provided with a self-lubricating device, and the self-lubricating device is used to lubricate the sealing ring to reduce wear.

2. The sealing ring of a solenoid valve according to claim 1, characterized in that: The microstructure includes microstructure protrusions (9), and the outer surface of the sealing ring (1) is fixedly connected with a plurality of microstructure protrusions (9) at equal intervals, and oil storage grooves (10) are provided between the plurality of microstructure protrusions (9).

3. The sealing ring of a solenoid valve according to claim 1, characterized in that: The self-compensating device comprises a spring chamber (7), a plurality of spring chambers (7) are equidistantly provided inside the sealing ring (1) near the bottom end, an elastic spring (8) is fixedly connected to the center of the rear end of the spring chamber (7), and the front end of the elastic spring (8) is fixedly connected to the front end of the spring chamber (7).

4. The sealing ring of a solenoid valve according to claim 1, characterized in that: The self-lubricating device comprises an oil storage chamber (6), the oil storage chamber (6) is provided inside the second sealing ring (2) near the front end, and a diaphragm (5) is fixedly connected to the front end of the oil storage chamber (6).

5. The sealing ring of a solenoid valve according to claim 4, characterized in that: The opening of the oil storage chamber (6) is in communication with the surface of the second sealing ring (2), and the diaphragm (5) is fixedly connected to the outer surface of the second sealing ring (2).

6. The sealing ring of a solenoid valve according to claim 1, characterized in that: The sealing ring 1 (1), the sealing ring 2 (2) and the sealing ring 3 (3) are all made of soft rubber material, and the surface of the sealing ring 3 (3) is provided with a microstructure protrusion (9).

7. The sealing ring of a solenoid valve according to claim 3, characterized in that: The elastic spring (8) is a metal spring.

Images