Split type waterproof sealing ring structure

Abstract

The invention relates to the technical field of sealing rings, in particular to a split type waterproof sealing ring structure which comprises a steel framework, a fabric and rubber mixing part, a rubber part and finger-type springs, and the steel framework is wrapped with the fabric and rubber mixing part; the rubber part and the fabric and rubber mixing part are integrally formed, a main lip and an auxiliary lip are arranged on the other side of the rubber part, and a V-shaped groove is formed in the rubber part and located between the fabric and rubber mixing part and the main lip. The finger-shaped spring is attached to the V-shaped groove, one end of the finger-shaped spring is wrapped in the fabric and rubber mixing part, and the other end of the finger-shaped spring is embedded into one side of the main lip of the rubber part. The upper half part is made of a fabric and rubber mixed part, the fabric and rubber mixed part is excellent in buffering and anti-pressure capacity, cutting is facilitated at a subdivision notch, the lower half part is made of a rubber part, rubber is good in wear resistance, and the sealing use time and effect are guaranteed. The split type waterproof sealing ring structure is internally provided with the steel framework, so that the sealing ring can be effectively prevented from deforming.

Description

Technical Field

[0001] This invention relates to the field of sealing ring technology, specifically a split waterproof sealing ring structure. Background Technology

[0002] Split-type seals are primarily used in scenarios such as large, non-removable equipment, high-altitude or confined spaces, emergency repairs, heavy machinery, and temporary sealing. They significantly reduce maintenance costs and time, solve the installation problems inherent in traditional seals, and improve safety, compatibility, and economy. Through their non-disassembly design, they enable rapid replacement in extreme environments and critical industries (such as wind power, petrochemicals, and nuclear power), and are gradually becoming an important development direction for industrial sealing technology. Split-type seals, through structural innovation, overcome the installation bottlenecks of traditional seals, offering revolutionary value in terms of maintenance efficiency, adaptability to special operating conditions, and total lifecycle cost, and have become a crucial development direction for modern industrial sealing technology.

[0003] Currently, existing split-seal structures simply cut a whole rubber sealing ring, forcibly dividing it into two halves. This type of split seal has no connection between the interfaces and suffers from significant deformation, resulting in very poor sealing performance and failing to meet waterproofing requirements. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a split waterproof sealing ring structure, which is provided with a fabric and rubber mixture and a rubber mixture and rubber. The upper part is made of fabric and rubber mixture, which has better buffering and pressure resistance, and is easy to cut at the split cut. The lower part is made of rubber, which has good wear resistance and can ensure the sealing service time and effect. In addition, the built-in steel skeleton can effectively prevent the sealing ring from deforming.

[0005] To achieve the above objectives, the present invention provides a split waterproof sealing ring structure, comprising a steel frame, a fabric and rubber mixture, a rubber part, and a finger spring. The fabric and rubber mixture is wrapped around the outside of the steel frame. One side of the rubber part is integrally formed with the fabric and rubber mixture, and the other side of the rubber part is provided with a main lip and a secondary lip. A V-shaped groove is provided on the rubber part between the fabric and rubber mixture and the main lip. The finger spring is fitted into the V-shaped groove, with one end of the finger spring wrapped inside the fabric and rubber mixture and the other end of the finger spring inserted into one side of the main lip of the rubber part.

[0006] Furthermore, the split waterproof sealing ring structure is a sealing ring with a slit, and the finger spring has a notch at the slit.

[0007] Furthermore, the steel frame on one side of the cut position extends out of the cut surface of the fabric and rubber mixture; the steel frame on the other side is embedded inside the cut surface, and a long groove is provided between the end of the steel frame and the cut surface, the long groove being used to accommodate the steel frame extending out on the opposite side.

[0008] Furthermore, the main lip has an interference fit with the first mounting position, while the secondary lip has no interference fit and no gap with the second mounting position.

[0009] Furthermore, if the width of the fabric and rubber mixture is L and the width of the steel frame is L1, then L1 = 0.6L.

[0010] Furthermore, the thickness of the steel frame is S, and the minimum thickness of the fabric and rubber mixture wrapped around the outside of the steel frame is S1, then S1 = 1.5S.

[0011] Furthermore, the finger spring is configured in a compressed state within the V-shaped groove, the compressed state being 5°~10° less than the relaxed state of the finger spring.

[0012] Furthermore, the main lip has a first inclined surface and a second inclined surface at an angle to the first inclined surface on the side away from the fabric and rubber mixture. The first inclined surface is located on the side close to the secondary lip, and the angle between the first inclined surface and the horizontal plane is δ. The second inclined surface is located on the side away from the secondary lip, and the angle between the second inclined surface and the horizontal plane is γ, then γ = 1.6δ.

[0013] Furthermore, the main lip is provided with a third inclined surface that connects to the side of the first inclined surface away from the second inclined surface, and the acute angle between the plane where the first inclined surface is located and the third inclined surface is ε; the secondary lip is provided with a fourth inclined surface and a fifth and a sixth inclined surface respectively provided on both sides of the fourth inclined surface, and the angle between the fifth and the sixth inclined surfaces is θ; then θ=ε.

[0014] Furthermore, the angle between the fourth inclined surface and the horizontal plane is ζ, where ζ = γ.

[0015] Furthermore, the third inclined surface and the fifth inclined surface are smoothly transitioned by an arc.

[0016] The beneficial effects of this invention are as follows: The upper part is made of a mixture of fabric and rubber, which provides superior cushioning and pressure resistance, and is easy to cut at the slit. The lower part is made of rubber, which has good wear resistance, ensuring the sealing time and effectiveness. Furthermore, the double-lip seal effectively blocks all external impurities with the main lip, while the secondary lip blocks impurities not blocked by the main lip and filters out old lubricating grease, ensuring cleanliness within the cavity and improving the sealing effect. Additionally, the built-in steel frame effectively prevents deformation of the sealing ring. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a split waterproof sealing ring structure in one embodiment of the present invention; Figure 2 This is a schematic diagram showing the dimensions of a split waterproof sealing ring structure in one embodiment of the present invention; Figure 3 This is a three-dimensional schematic diagram of a split waterproof sealing ring structure in one embodiment of the present invention; Figure 4 This is a schematic diagram of the first cross-sectional view of the split waterproof sealing ring structure in one embodiment of the present invention; Figure 5 This is a schematic diagram of the second cross-sectional view of the split waterproof sealing ring structure in one embodiment of the present invention; Figure 6 This is a schematic diagram of a second cross-section of the split waterproof sealing ring structure from another angle in one embodiment of the present invention; In the picture: 100. Steel frame, 200. Fabric and rubber composite section, 300. Rubber part; 310. Main lip; 311. First inclined surface; 312. Second inclined surface; 313. Third inclined surface; 320. Secondary lip; 321. Fourth inclined surface; 322. Fifth inclined surface; 323. Sixth inclined surface; 330. V-shaped groove; 340. Arc. 400, Finger Spring, 500. First section plane. 600, Second cutting surface; 610, Long groove; 10. Horizontal plane. Detailed Implementation

[0018] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0019] See Figure 1 and Figure 3 The diagram shows a schematic of a split waterproof sealing ring structure according to an embodiment of the present invention, which includes a steel frame 100, a fabric and rubber mixture 200, a rubber part 300, and a finger spring 400. The fabric and rubber mixture 200 is wrapped around the outside of the steel frame 100. One side of the rubber part 300 is connected to the fabric and rubber mixture 200, and the other side of the rubber part 300 is provided with a main lip 310 and a secondary lip 320. A V-shaped groove 330 is provided on the rubber part 300 between the fabric and rubber mixture 200 and the main lip 310. The finger spring 400 is fitted into the V-shaped groove 330. One end of the finger spring 400 is wrapped inside the fabric and rubber mixture 200, and the other end of the finger spring 400 is embedded in one side of the main lip 310 of the rubber part 300.

[0020] The upper part of the aforementioned split waterproof sealing ring structure is made of a fabric and rubber mixture 200. This mixture 200 offers superior cushioning and pressure resistance, and is easy to cut at the split incision. The lower part is made of rubber 300, primarily because rubber has good wear resistance, ensuring sealing time and effectiveness. In this embodiment, the fabric and rubber mixture 200 is a structure formed by injection molding rubber with added fabric material. The fabric content is greater than the rubber content, and the fabric includes, but is not limited to, fiber cloth, canvas, etc. The core advantage of combining fabric and rubber materials in the fabric and rubber mixture 200 is increased rigidity and strength, resistance to high-pressure extrusion, and ensures the stability of the sealing effect. Furthermore, the upper fabric and rubber mixture 200 and the lower rubber part 300 are integrally molded using a mold. The main lip 310 of the aforementioned split waterproof sealing ring structure effectively blocks all external impurities, while the secondary lip 320 blocks impurities not blocked by the main lip 310. It also filters out old lubricating grease, ensuring cleanliness within the cavity.

[0021] In a specific configuration example, see [link to example]. Figures 4-6The aforementioned split waterproof sealing ring structure has only one cut in the overall sealing structure. At the cut (i.e., the split sealing connection), a small section does not have a finger spring 400. The corresponding steel frame 100 is designed to be narrower at the front and wider at the back. A long groove 610 is provided on the other side to mate with it, and the steel frame 100 is sealed and installed in the long groove 610. During installation, the split sealing outer ring and the mounting groove have an interference fit, which can compress the sealing ring, making the connection safer and more reliable.

[0022] like Figure 6 As shown, in one embodiment, the steel frame 100 on one side of the cut protrudes from the first cut surface 500 of the fabric and rubber mixture 200; the steel frame 100 on the other side is embedded inside the second cut surface 600, and a long groove 610 is provided between the end of the steel frame 100 and the second cut surface 600. The long groove 610 is used to accommodate the steel frame 100 protruding from the opposite side. The above-mentioned split waterproof sealing ring structure, with a "tie-and-loop" connection at the cut, and the steel frame 100 protruding on one side and the long groove 610 provided on the other side, ensures that during installation, the protruding steel frame 100 can be completely inserted into the other half of the long groove 610. The built-in steel frame 100 can effectively prevent the sealing ring from deforming.

[0023] In one embodiment, the main lip 310 is interference-fitted with the first mounting position, while the secondary lip 320 has no interference fit and no gap with the second mounting position. In use, the main lip 310 faces outwards, and the secondary lip 320 faces inwards. The main lip 310 is installed with an interference fit, and the interference fit between the main lip 310 and the mounting position can be adjusted according to the usage environment and requirements, generally not less than 0.1mm, effectively blocking all external impurities. The bottom of the secondary lip 320 fits snugly to the mounting position, with neither interference fit nor gap, blocking impurities not blocked by the main lip 310, and also filtering out old grease, ensuring the cleanliness of the cavity.

[0024] In one embodiment, the width of the fabric and rubber mixture 200 is L, and the width of the steel frame 100 is L1, then L1 = 0.6L.

[0025] In one embodiment, the thickness of the steel frame 100 is S, and the minimum thickness of the fabric and rubber mixture wrapped around the outside of the steel frame 100 is S1, then S1 = 1.5S.

[0026] In one embodiment, the finger spring 400 is configured in a compressed state within the V-shaped groove 330, the compressed state being 5° to 10° less than the relaxed state of the finger spring.

[0027] In one embodiment, the main lip 310 has a first inclined surface 311 and a second inclined surface 312 at an angle to the first inclined surface 311 on the side away from the fabric and rubber mixture 200. The first inclined surface 311 is located on the side close to the secondary lip 320, and the angle between the first inclined surface 311 and the horizontal plane 10 is δ. The second inclined surface 312 is located on the side away from the secondary lip 320, and the angle between the second inclined surface 312 and the horizontal plane 10 is γ, where γ = 1.6δ.

[0028] In one embodiment, the main lip 310 is provided with a third inclined surface 313 that connects to the side of the first inclined surface 311 away from the second inclined surface 312, and the acute angle between the plane where the first inclined surface 311 is located and the third inclined surface 313 is ε; the secondary lip 320 is provided with a fourth inclined surface 321 and a fifth inclined surface 322 and a sixth inclined surface 323 respectively provided on both sides of the fourth inclined surface 321, and the angle between the fifth inclined surface 322 and the sixth inclined surface 323 is θ; then θ=ε.

[0029] In one embodiment, the angle between the fourth inclined surface 321 and the horizontal plane is ζ, where ζ = γ.

[0030] In one embodiment, the third inclined surface 313 and the fifth inclined surface 322 are smoothly transitioned by an arc 340.

[0031] Figure 2 This invention illustrates the dimensional relationships between various dimensions of a split waterproof sealing ring structure according to an embodiment of the present invention, wherein: L-Fabric and rubber composite section, 200mm width; L1 - Steel frame, 100mm width; L2 - Distance between the main lip 310 and the end face of the sealing ring; L3-finger spring, 400mm end face adhesive thickness; H - Total height of the sealing ring section; H1 - The height between the primary lip 310 and the secondary lip 320; S - Steel plate thickness of 100 for making the steel frame; S1 - Steel frame with 100mm adhesive coating thickness; The α-finger spring forms an angle of 40° with the horizontal plane at 10°. β - The included angle between the finger springs after installation (40°); γ-The right side of the primary lip forms an angle of 10 with the horizontal plane; δ - The angle between the right side of the main lip (310°) and the horizontal plane (10°); ε-Angle at the transition point of the large arc on the left side of the main lip 310; ζ-Angle between the secondary lip (320°) and the vertical plane; η - The angle between the right triangular arc of the seal and the vertical plane; The angle between θ and the secondary lip 320; The design principle for the steel frame 100 is as follows: L1=0.6L, and the thickness of the S plate is selected based on the overall size of the sealing ring. No specific value is set; it is sufficient to meet the usage requirements. The adhesive coating thickness is generally S1=1.5S, which ensures that the steel plate is completely inside the rubber while also ensuring that the steel frame 100 will not easily puncture the outer diameter surface of the sealing ring during connection.

[0032] Selection principles for finger spring 400: Finger spring 400 is generally a standard part. When selecting, it can be selected according to the size and width of the sealing ring cross section, ensuring a reasonable layout. There are no fixed requirements. The finger spring 400 is in a compressed state in the sealing ring. The β angle is generally 5°~10° smaller than that of the finger spring in the relaxed state. It is determined according to the compression requirements of the main lip 310 and the sealing point. Generally, the tighter it is compressed, the better the sealing performance, but it is also more prone to wear and needs to be replaced frequently.

[0033] The design principle of the main lip 310: The lip connected to the finger spring 400 becomes the main lip 310, which resists all external impurities and is waterproof. γ is generally 40°, δ is 25°, or other angles can be selected. γ is generally greater than 20°, γ=1.6δ. This ensures both the contact area between the main lip 310 and the sealing area and controls friction. Additionally, L2=1.5S.

[0034] Design principles for secondary lip 320: The dimensions of secondary lip 320 are the same as those of the mating surface. The height of secondary lip 320 and main lip 310 is controlled based on the interference fit between main lip 310 and the sealing area, generally greater than 0.2mm. ζ=γ, θ=ε, while ensuring a smooth transition with the large arc connection.

[0035] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" a second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of a second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" a second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "above," "below," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

Claims

1. A split-type waterproof sealing ring structure, characterized in that: include Steel frame; A fabric and rubber blend is wrapped around the outside of the steel frame; The rubber part is integrally formed with the fabric and rubber mixture part on one side, and a main lip and a secondary lip are provided on the other side of the rubber part. A V-shaped groove is provided on the rubber part between the fabric and rubber mixture part and the main lip. A finger spring is fitted to the V-shaped groove. One end of the finger spring is wrapped inside the fabric and rubber mixture, and the other end of the finger spring is inserted into the main lip side of the rubber part.

2. The split waterproof sealing ring structure according to claim 1, characterized in that: The split waterproof sealing ring structure is a sealing ring with a slit, and the finger spring has a notch at the slit.

3. The split waterproof sealing ring structure according to claim 2, characterized in that: The steel frame on one side of the cut position extends out of the cut surface of the fabric and rubber mixture; The steel frame on the other side is embedded inside the cut surface, and a long groove is provided between the end of the steel frame and the cut surface. The long groove is used to accommodate the steel frame extending from the opposite side.

4. The split waterproof sealing ring structure according to claim 1, characterized in that: The main lip has an interference fit with the first mounting position, while the secondary lip has no interference fit and no gap with the second mounting position.

5. The split waterproof sealing ring structure according to claim 1, characterized in that: The width of the fabric and rubber mixture is L, and the width of the steel frame is L1, then L1 = 0.6L.

6. The split waterproof sealing ring structure according to claim 1, characterized in that: The finger spring is configured in a compressed state within the V-shaped groove, and the compressed state is 5° to 10° less than the relaxed state of the finger spring.

7. The split waterproof sealing ring structure according to any one of claims 1-6, characterized in that: The main lip has a first inclined surface and a second inclined surface at an angle to the first inclined surface on the side away from the fabric and rubber mixture. The first inclined surface is located on the side close to the secondary lip, and the angle between the first inclined surface and the horizontal plane is δ. The second inclined surface is located on the side away from the secondary lip, and the angle between the second inclined surface and the horizontal plane is γ, then γ = 1.6δ.

8. The split waterproof sealing ring structure according to claim 7, characterized in that: The main lip is provided with a third inclined surface that connects to the side of the first inclined surface away from the second inclined surface, and the acute angle between the plane where the first inclined surface is located and the third inclined surface is ε; the secondary lip is provided with a fourth inclined surface and a fifth and a sixth inclined surface respectively provided on both sides of the fourth inclined surface, and the angle between the fifth and the sixth inclined surfaces is θ; then θ=ε.

9. The split waterproof sealing ring structure according to claim 8, characterized in that: The angle between the fourth inclined surface and the horizontal plane is ζ, where ζ = γ.

10. The split waterproof sealing ring structure according to claim 9, characterized in that: The third inclined surface and the fifth inclined surface are smoothly transitioned by an arc.

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