Universal sealing ring for hole and shaft

Abstract

The utility model discloses a shaft type sealing ring which comprises a sealing ring body, a U-shaped groove is formed in the top of the sealing ring body, an inner ring is arranged on the inner side of the U-shaped groove, an outer ring is arranged on the outer side of the U-shaped groove, an outer side attached lip is arranged on the edge of the outer ring, and a tail receding space is formed in the connecting position of the outer side face and the bottom face of the sealing ring body. An inner side attached lip is arranged below the U-shaped groove in the inner side face of the sealing ring body. The sealing ring is particularly suitable for being mounted in a closed groove for use, and is a universal sealing ring for holes and shafts, which is simple to mount, small in frictional resistance and not easy to generate trapped pressure. The sealing device has the characteristics of good sealing effect, small product section, easiness in installation, capability of reducing sliding friction, pressure trapping prevention and the like.

Description

Technical Field

[0001] This utility model relates to a universal sealing ring for holes and shafts, belonging to the field of sealing ring technology. Background Technology

[0002] Existing shaft-type U-ring seals are widely accepted in the market due to their versatility. However, they also have some obvious drawbacks. First, the high starting pressure and high running resistance can easily lead to abnormal noise and creeping. Second, because the inner and outer lips are of equal height, they are prone to trapping pressure when used in series with other seals, resulting in increased running resistance or damage to the seals. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model provides a universal sealing ring for holes and shafts, including a sealing ring body. The top of the sealing ring body is provided with a U-shaped groove, the inner side of the U-shaped groove is an inner ring, the outer side of the U-shaped groove is an outer ring, the edge of the outer ring is provided with an outer lip, the connection between the outer side and the bottom of the sealing ring body is provided with a tail clearance, and the inner side of the sealing ring body is provided with an inner lip below the U-shaped groove on the inner side of the sealing ring body.

[0004] Preferably, the outer and inner lip have triangular cross-sections.

[0005] Preferably, the height of the inner ring is less than the height of the outer ring.

[0006] This invention provides a universal sealing ring for bores and shafts. When this novel dustproof and guide-type combined sealing ring is installed in the groove of a hydraulic cylinder, the inner and outer lips are pressed inwards, respectively abutting against the inner and outer diameters of the groove. The U-shaped groove between the inner and outer rings ensures the service life and sealing effect of the sealing ring. The cross-sections of the outer and inner lips are triangular, reducing sliding friction resistance and lowering temperature rise, thus guaranteeing the service life and sealing effect of the sealing ring. This sealing ring is suitable for working environments with pressures less than 30 MPa and operating speeds of 0.5 m / s. Within a certain pressure and temperature range, this sealing ring exhibits good sealing performance; the higher the pressure, the tighter the lip fits, and it has a certain compensating ability after the sealing lip wears. This sealing ring is particularly suitable for use in enclosed grooves. It is a universal sealing ring for bores and shafts that is easy to install, has low frictional resistance, and is not prone to pressure trapping. It features good sealing effect, small product cross-section, easy installation, reduced sliding friction, and avoidance of pressure trapping. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of a universal sealing ring for holes and shafts according to this utility model;

[0008] Figure 2 This is a cross-sectional view of a universal sealing ring for holes and shafts according to the present invention;

[0009] The components include: 1. sealing ring body; 2. inner ring; 3. U-shaped groove; 4. outer ring; 5. outer lip; 6. tail clearance; 7. inner lip. Detailed Implementation

[0010] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this utility model. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0011] Specific Implementation Example 1, such as Figure 1-2 As shown, a universal sealing ring for holes and shafts includes a sealing ring body 1. The top of the sealing ring body 1 is provided with a U-shaped groove 3. The inner side of the U-shaped groove 3 is an inner ring 2, and the outer side of the U-shaped groove 3 is an outer ring 4. The edge of the outer ring 4 is provided with an outer lip 5. The connection between the outer side and the bottom of the sealing ring body 1 is provided with a tail clearance 6. The inner side of the sealing ring body 1 is provided with an inner lip 7 below the U-shaped groove 3. The cross-section of the outer lip 5 and the inner lip 7 is triangular. The height of the inner ring is less than the height of the outer ring.

[0012] This utility model provides a universal sealing ring for bores and shafts. When this novel dustproof and guide-type combined sealing ring is installed in the groove of a hydraulic cylinder, the inner lip 7 and outer lip 5 are pressed inwards, respectively abutting against the inner and outer diameters of the groove. The U-shaped groove between the inner ring 2 and outer ring 4 ensures the service life and sealing effect of the sealing ring. The cross-sections of the outer lip 5 and inner lip 7 are triangular, reducing sliding friction resistance and temperature rise, thus ensuring the service life and sealing effect of the sealing ring. This sealing ring is suitable for working environments with pressures less than 30 MPa and operating speeds of 0.5 m / s. Within a certain pressure and temperature range, this sealing ring exhibits good sealing performance; the higher the pressure, the tighter the lip fits, and it has a certain compensating ability after the sealing lip wears. This sealing ring is particularly suitable for use in enclosed grooves. It is a universal sealing ring for bores and shafts that is easy to install, has low frictional resistance, and is not prone to pressure trapping. It features good sealing effect, small product cross-section, easy installation, reduced sliding friction, and avoidance of pressure trapping.

[0013] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A universal sealing ring for holes and shafts, comprising a sealing ring body (1), characterized in that; The top of the sealing ring body (1) is provided with a U-shaped groove (3), the inner side of the U-shaped groove (3) is the inner ring (2), the outer side of the U-shaped groove (3) is the outer ring (4), the edge of the outer ring (4) is provided with an outer lip (5), the connection between the outer side and the bottom of the sealing ring body (1) is provided with a tail clearance (6), and the lower part of the U-shaped groove (3) on the inner side of the sealing ring body (1) is provided with an inner lip (7).

2. The universal sealing ring for holes and shafts according to claim 1, characterized in that, The cross-sections of the outer lip (5) and the inner lip (7) are triangular.

3. The universal sealing ring for holes and shafts according to claim 1, characterized in that, The height of the inner ring (2) is less than the height of the outer ring (4).

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