Novel double-acting dustproof combined sealing ring
By designing a dual-action dustproof combination seal ring, the problem of oil film diffusion in harsh environments is solved by utilizing the extrusion force of the outer and inner lips and the secondary lip of the outer ring. This achieves good dustproof and sealing effects and extends the service life of the main seal.
Patent Information
- Application Number
- CN202422668960.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-03
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-03
AI Technical Summary
Existing dust seals are ineffective at preventing the spread of residual oil film on the piston rod and preventing external oil or water from contacting the main seal, resulting in poor sealing performance and shortened service life, especially in harsh environments.
Design a dual-action dustproof combination seal ring, comprising an outer lip and an inner lip. The outer and inner lips form an O-ring placed in the groove, generating extrusion pressure. Combined with the outer ring secondary lip, it achieves sealing of the inner and outer diameters of the groove, preventing oil film diffusion and preventing external liquid from contacting the main seal.
It achieves excellent dustproof and sealing performance within a pressure and temperature range, prevents oil film diffusion, extends the service life of the main seal, and is suitable for harsh environments.
Smart Images
Figure CN223498692U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a novel dual-function dustproof combined sealing ring, belonging to the field of sealing ring technology. Background Technology
[0002] As the name suggests, a dustproof combination seal ring is a ring designed to prevent external dust from entering the hydraulic cylinder and to provide a seal. In existing designs, dustproof rings are mounted on the piston rod, generally only serving a dust-proof function and rarely preventing residual oil film from spreading on the piston rod. Utility Model Content
[0003] To overcome the shortcomings of the existing technology, this utility model provides a novel dual-action dustproof combined sealing ring, including an outer lip and an inner lip, with one side of the outer lip and the inner lip connected together, forming an O-ring placement groove between the outer lip and the inner lip, and an O-ring placed in the O-ring placement groove, with an outer ring auxiliary lip provided at the bottom of the outer side of the sealing ring, and a root inner ring auxiliary lip provided at the bottom side of the sealing ring.
[0004] Preferably, the thickness of the outer lip is the same as the thickness of the inner lip.
[0005] This invention provides a novel dual-action dustproof combined sealing ring. When installed in a groove, the outer and inner lips of this novel dustproof and guiding combined sealing ring are pressed against the O-ring placement groove, causing the O-ring in the groove to exert force that presses the inner and outer lips against the inner and outer diameters of the groove. The outer ring has a secondary lip, which provides a certain degree of waterproof and dustproof effect. This sealing ring maintains a certain sealing performance within a specific pressure and temperature range. When used in conjunction with a piston rod seal, it prevents residual oil film on the piston rod from appearing outside the sealing system and better prevents external water or oil from contacting the main seal, extending the service life of the main seal. In summary, this dustproof combined sealing ring is suitable for harsh working environments and has excellent dustproof and sealing properties. Attached Figure Description
[0006] Figure 1 This is a schematic diagram of the structure of a novel dual-function dustproof combined sealing ring according to this utility model;
[0007] Figure 2 This is a cross-sectional view of a novel dual-function dustproof combined sealing ring according to this utility model;
[0008] Among them: 1. outer lip; 2. inner lip; 3. outer ring secondary lip; 4. root inner ring secondary lip; 5. O-ring; 6. O-ring placement groove. Detailed Implementation
[0009] 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.
[0010] Specific Implementation Example 1, such as Figure 1-2 As shown, a novel dual-action dustproof combination sealing ring includes an outer lip 1 and an inner lip 2. The outer lip 1 and the inner lip 2 are connected on one side, and an O-ring placement groove 6 is formed between the outer lip 1 and the inner lip 2. An O-ring 5 is placed in the O-ring placement groove 6. An outer ring secondary lip 3 is provided at the bottom of the outer side of the sealing ring, and a root inner ring secondary lip 4 is provided at the bottom side of the sealing ring. The thickness of the outer lip 1 is the same as the thickness of the inner lip 2.
[0011] This invention provides a novel dual-action dustproof combined sealing ring. When installed in a groove, the outer lip 1 and inner lip 2 are pressed against the O-ring placement groove 6, causing the O-ring 5 in the groove 6 to exert force that holds the inner lip 2 and outer lip 1 against the inner and outer diameters of the groove. The outer ring 1 has a secondary lip 3, which provides a certain degree of waterproofing and dustproofing. This sealing ring maintains a certain sealing performance within a specific pressure and temperature range. When used in conjunction with a piston rod seal, it prevents residual oil film on the piston rod from appearing outside the sealing system and better prevents external water or oil from contacting the main seal, extending the service life of the main seal. In summary, this dustproof combined sealing ring is suitable for harsh working environments and has excellent dustproof and sealing properties.
[0012] 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 novel dual-function dustproof combination sealing ring, comprising an outer lip (1) and an inner lip (2), characterized in that; The outer lip (1) and the inner lip (2) are connected on one side, and an O-ring placement groove (6) is formed between the outer lip (1) and the inner lip (2). An O-ring (5) is placed in the O-ring placement groove (6). An outer ring secondary lip (3) is provided at the bottom of the outer side of the sealing ring, and a root inner ring secondary lip (4) is provided at the bottom side of the sealing ring.
2. The novel dual-action dustproof combined sealing ring according to claim 1, characterized in that, The thickness of the outer lip (1) is the same as the thickness of the inner lip (2).