Independent air pressure self-adaptive floating seal ring module

Abstract

The application discloses an independent air pressure self-adaptive floating sealing ring module, which comprises a dynamic sealing assembly and a static sealing assembly, the dynamic sealing assembly comprises a dynamic sealing cover and a dynamic sealing ring, the static sealing assembly comprises a static sealing cover and a static sealing ring, a wheel hub interface assembly is connected to the dynamic sealing cover, an air inlet pipe assembly is connected to the static sealing cover, an air cavity is arranged between the dynamic sealing cover and the dynamic sealing ring, air passages are arranged in the dynamic sealing cover, the dynamic sealing ring, the static sealing cover and the static sealing ring and are in communication with each other, and the air cavity is in communication with the air passages, so that the dynamic sealing ring is pushed to move towards the static sealing ring when the air cavity is filled with high-pressure gas. The sealing pressure is self-adaptively adjusted through air pressure, dynamic sealing compensation is realized, the sealing failure problem caused by sealing surface wear is effectively solved, and the sealing reliability and service life are improved.

Description

Technical Field

[0001] This invention relates to the field of mechanical seal technology, and more specifically to an independent air pressure adaptive floating seal ring module. Background Technology

[0002] The prior art includes a publication number CN20443157U entitled "A Hub Bearing Unit Applicable to a Tire Central Inflation / Deflation System," which discloses a sealed air passage provided by a cavity. The main air pressure resistance is borne by the rigid structure of the first and second sealing rings. However, when the air pressure in the air passage increases, the sealing force cannot be adaptively increased, which can easily lead to gas leakage due to air pressure impact. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide an independent air pressure adaptive floating sealing ring module, which achieves dynamic adjustment of sealing force through air pressure drive, thereby solving the problem of sealing failure when air pressure increases.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an independent air pressure adaptive floating sealing ring module, comprising a dynamic sealing assembly and a static sealing assembly. The dynamic sealing assembly includes a dynamic sealing cover and a dynamic sealing ring, and the static sealing assembly includes a static sealing cover and a static sealing ring. A hub interface assembly is connected to the dynamic sealing cover, and an air inlet pipe assembly is connected to the static sealing cover. An air chamber is provided between the dynamic sealing ring and the dynamic sealing cover. Interconnected air passages are opened in the dynamic sealing cover, the dynamic sealing ring, the static sealing cover, and the static sealing ring. The air chamber communicates with the air passages so that when the air chamber is filled with high-pressure gas, it pushes the dynamic sealing ring toward the static sealing ring.

[0005] As a further improvement of the present invention, a sealing flange is provided on one end face of the dynamic sealing ring facing the static sealing ring. The static sealing ring has a ring-shaped structure, and the sealing flange extends into the static sealing ring. A sealing lip is provided on the end face of the static sealing ring, and the sealing lip abuts against the side wall of the sealing flange to seal.

[0006] As a further improvement of the present invention, the inner and outer ring edges of the dynamic sealing ring facing the static sealing ring are provided with extension walls, and a receiving groove for receiving the sealing lip is formed between the extension wall and the sealing protrusion.

[0007] As a further improvement of the present invention, a floating sealing ring is provided between the dynamic sealing cover and the dynamic sealing ring. An air cavity is formed inside the floating sealing ring. The floating sealing ring is integrally formed by the cover connecting part, the telescopic part and the ring connecting part. The cover connecting part is fitted on the dynamic sealing cover, the ring connecting part is fitted on the dynamic sealing ring, and the telescopic part is located between the cover connecting part and the ring connecting part. The circumferential cross-section of the telescopic part is U-shaped. The cover connecting part and the ring connecting part are respectively connected to the two ends of the U-shape so as to realize the expansion and contraction of the floating sealing ring through the deformation of the U-shape.

[0008] As a further improvement of the present invention, the hub interface assembly includes a connecting pipe, a first connector and a second connector, the first connector and the second connector being connected to the two ends of the connecting pipe respectively, the first connector being connected to the dynamic sealing cover, and the second connector being connected to an external component.

[0009] As a further improvement of the present invention, the second connector is in the shape of a hollow cylinder, with a thread on the outer wall of one end for threaded connection to the end of the connecting pipe, and a thread on the inner wall of the other end.

[0010] As a further improvement of the present invention, the dynamic sealing ring and the static sealing ring are spaced apart from each other, forming a sealed cavity between them. The static sealing ring is provided with two joints, and the air intake pipe assembly is provided with two joints, which are connected to the two joints respectively.

[0011] This invention utilizes a design that connects the air chamber and air passage, employing high-pressure gas to propel the dynamic sealing ring towards the static sealing ring, achieving dynamic adaptive adjustment of the sealing pressure. This solves the problem of insufficient sealing force leading to leakage in traditional sealing structures when air pressure increases, offering advantages such as fast response and high sealing reliability. The fit between the sealing flange and the sealing lip enhances the sealing contact area, while the receiving groove formed by the extended wall protects the sealing lip. The U-shaped telescopic structure of the floating sealing ring allows the dynamic sealing ring to float within a certain range, further improving sealing compensation capabilities. The modular design of the hub interface assembly facilitates installation and maintenance. Attached Figure Description

[0012] Figure 1 This is an overall structural diagram of the independent air pressure adaptive floating sealing ring module of the present invention; Figure 2 This is an internal structural diagram of the independent air pressure adaptive floating sealing ring module of the present invention; Figure 3 for Figure 2 Overall structural diagram of the floating seal ring. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0014] Reference Figure 1 , Figure 2As shown, the independent air pressure adaptive floating sealing ring module of this embodiment includes a dynamic sealing component 1 and a static sealing component 2. The dynamic sealing component 1 includes a dynamic sealing cover 11 and a dynamic sealing ring 12. The static sealing component 2 includes a static sealing cover 21 and a static sealing ring 22. A hub interface component is connected to the dynamic sealing cover 11, and an air intake pipe component is connected to the static sealing cover 21. An air chamber 14 is provided between the dynamic sealing ring 12 and the dynamic sealing cover 11. Interconnected air passages are opened in the dynamic sealing cover 11, the dynamic sealing ring 12, the static sealing cover 21, and the static sealing ring 22. The air chamber 14 is connected to the air passages so that when the air chamber 14 is filled with high-pressure gas, it pushes the dynamic sealing ring 12 toward the static sealing ring 22. During operation, high-pressure gas enters the air passage through the air inlet pipe assembly and fills the air chamber 14. The increased air pressure in the air chamber 14 pushes the dynamic sealing ring 12 to move towards the static sealing ring 22, causing the sealing surface pressure to increase synchronously with the air pressure. This solves the problem of air pressure impact leakage caused by the inability of the sealing force to be adaptively adjusted in traditional sealing structures in the background technology, realizes dynamic sealing compensation, and improves sealing reliability.

[0015] Reference Figure 2 As shown, further, the dynamic sealing ring 12 has a sealing flange 122 on one end face facing the static sealing ring 22. The static sealing ring 22 has a ring-like structure, and the sealing flange 122 extends into the static sealing ring 22. The end face of the static sealing ring 22 has a sealing lip, which abuts against the side wall of the sealing flange 122 for sealing. The sealing flange 122 and the ring-like structure of the static sealing ring 22 form a labyrinthine sealing path. Combined with the elastic contact of the sealing lip, this assists the main sealing structure in improving the sealing effect, additionally increasing the sealing contact area, and reducing local pressure concentration.

[0016] Furthermore, the dynamic sealing ring 12 has extension walls 123 on both the inner and outer ring edges facing the static sealing ring 22. An accommodating groove is formed between the extension wall 123 and the sealing flange 122 to accommodate the sealing lip. The accommodating groove provides some protection for the sealing lip, preventing foreign objects from entering between the sealing lip and the sealing flange 122, and helping the sealing flange 122 maintain stable contact with the sealing lip.

[0017] Reference Figure 3As shown, a floating sealing ring 13 is further provided between the dynamic sealing cover 11 and the dynamic sealing ring 12. An air cavity 14 is formed inside the floating sealing ring 13. The floating sealing ring 13 is integrally formed by the cover connecting part 114, the telescopic part 132 and the ring connecting part 133. The cover connecting part 114 is fitted on the dynamic sealing cover 11, the ring connecting part 133 is fitted on the dynamic sealing ring 12, and the telescopic part 132 is located between the cover connecting part 114 and the ring connecting part 133. The circumferential cross-section of the telescopic part 132 is U-shaped. The cover connecting part 114 and the ring connecting part 133 are respectively connected to the two ends of the U-shape so as to realize the expansion and contraction of the floating sealing ring 13 through the deformation of the U-shape. During operation, the U-shaped telescopic part 132 can undergo elastic deformation as the dynamic sealing ring 12 moves, allowing the dynamic sealing ring 12 to float in the axial and radial directions. This enables the dynamic sealing ring 12 to better enhance the sealing effect with changes in air pressure. The use of the U-shaped telescopic part 132 allows the dynamic sealing ring 12 to have a larger stroke, and the overall structure is simple and easy to manufacture.

[0018] Furthermore, the hub interface assembly includes a connecting pipe 3, a first connector 4, and a second connector 5. The first connector 4 and the second connector 5 are respectively connected to the two ends of the connecting pipe 3. The first connector 4 is connected to the dynamic sealing cover 11, and the second connector 5 is connected to external components. During operation, external gas enters the air passage of the dynamic sealing cover 11 through the second connector 5, the connecting pipe 3, and the first connector 4, assisting in the air pressure supply to the air chamber 14. Its modular design makes installation and maintenance more convenient and further improves the system's assembly efficiency.

[0019] Furthermore, the second connector 5 is a hollow cylinder with threads on the outer wall of one end, which connects to the end of the connecting pipe 3. The inner wall of the other end is also threaded. During operation, the threaded connection ensures a secure connection between the second connector 5, the connecting pipe 3, and external components, assisting the hub interface assembly in achieving reliable gas transmission. The threaded structure also enables quick disassembly and assembly.

[0020] Furthermore, the dynamic sealing ring 12 and the static sealing ring 22 are spaced apart from each other, forming a sealed cavity between them. The static sealing ring 22 is provided with two connectors, and the air intake pipe assembly is provided with two connectors, which are connected to the two connectors respectively. During operation, the two air intake pipe assemblies can supply air to the air passage simultaneously or independently.

[0021] In summary, the present invention adopts an independent air pressure adaptive floating sealing ring module design scheme. Through the cooperation of the dynamic sealing component 1 and the static sealing component 2 with the air chamber 13, the sealing pressure is dynamically adjusted, which solves the leakage problem caused by the inability of the sealing force to adaptively increase when the air pressure rises in traditional sealing structures. This achieves the technical effects of improved sealing reliability, dynamic compensation and extended service life.

[0022] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An independent air pressure adaptive floating sealing ring module, characterized in that: The assembly includes a dynamic sealing component (1) and a static sealing component (2). The dynamic sealing component (1) includes a dynamic sealing cover (11) and a dynamic sealing ring (12). The static sealing component (2) includes a static sealing cover (21) and a static sealing ring (22). A hub interface assembly is connected to the dynamic sealing cover (11), and an air intake pipe assembly is connected to the static sealing cover (21). An air chamber (14) is provided between the dynamic sealing ring (12) and the dynamic sealing cover (11). Interconnected air passages are provided in the dynamic sealing cover (11), the dynamic sealing ring (12), the static sealing cover (21), and the static sealing ring (22). The air chamber (14) is connected to the air passage so that when the air chamber (14) is filled with high-pressure gas, it pushes the dynamic sealing ring (12) toward the static sealing ring (22).

2. The independent pneumatic adaptive floating sealing ring module according to claim 1, characterized in that: The dynamic sealing ring (12) has a sealing flange (122) on one end face facing the static sealing ring (22). The static sealing ring (22) has a ring structure. The sealing flange (122) extends into the static sealing ring (22). The end face of the static sealing ring (22) has a sealing lip, which abuts against the side wall of the sealing flange (122) to seal.

3. The independent pneumatic adaptive floating sealing ring module according to claim 2, characterized in that: The dynamic sealing ring (12) has an extension wall (123) on both the inner and outer ring sides facing the static sealing ring (22), and a receiving groove for accommodating the sealing lip is formed between the extension wall (123) and the sealing flange (122).

4. The independent pneumatic adaptive floating sealing ring module according to any one of claims 1 to 3, characterized in that: A floating sealing ring (13) is provided between the dynamic sealing cover (11) and the dynamic sealing ring (12). An air cavity (14) is formed inside the floating sealing ring (13). The floating sealing ring (13) is integrally formed by the cover connecting part (114), the telescopic part (132) and the ring connecting part (133). The cover connecting part (114) is fitted on the dynamic sealing cover (11), the ring connecting part (133) is fitted on the dynamic sealing ring (12), and the telescopic part (132) is located between the cover connecting part (114) and the ring connecting part (133). The circumferential cross section of the telescopic part (132) is U-shaped. The cover connecting part (114) and the ring connecting part (133) are respectively connected to the two ends of the U-shape so as to realize the expansion and contraction of the floating sealing ring (13) through the deformation of the U-shape.

5. The independent pneumatic adaptive floating sealing ring module according to any one of claims 1 to 3, characterized in that: The hub interface assembly includes a connecting pipe (3), a first connector (4), and a second connector (5). The first connector (4) and the second connector (5) are respectively connected to the two ends of the connecting pipe (3). The first connector (4) is connected to the dynamic sealing cover (11), and the second connector (5) is connected to an external component.

6. The independent pneumatic adaptive floating sealing ring module according to claim 5, characterized in that: The second connector (5) is a hollow cylinder with a thread on the outer wall of one end, which is threaded to the end of the connecting pipe (3), and a thread on the inner wall of the other end.

7. The independent pneumatic adaptive floating sealing ring module according to any one of claims 1 to 3, characterized in that: The dynamic sealing ring (12) and the static sealing ring (22) are spaced apart from each other, forming a sealed cavity between them. The static sealing ring (22) is provided with two connectors, and the air intake pipe assembly is provided with two connectors, which are connected to the two connectors respectively.

Images