Environment-friendly sealed sealing ring

Abstract

The utility model provides a kind of environment-friendly sealed sealing ring, belong to mechanical sealing element technical field, it includes elastic sealing matrix, sealing framework and multiple lubricating gum pills, the sealing framework is circular, the section of sealing framework is inverted "n" shape with top open, the elastic sealing matrix is arranged in the sealing framework, the axial height of the sealing framework is lower than the axial height of the elastic sealing matrix;The sealing surface of the elastic sealing matrix extends to the bottom surface side of the sealing framework after protruding from the top of the sealing framework;The inside of the elastic sealing matrix is hollow, forms filling cavity, multiple the lubricating gum pills are filled and arranged in the filling cavity, the lubricating gum pill includes gum pill wall material, lubricant, and the lubricant is sealed and wrapped by gum pill wall material.The utility model lubricant is not easy to lose, not easy to pollute working medium, suitable in food, medicine, precision instrument and other high requirement equipment popularization and application.

Description

Technical Field

[0001] This utility model belongs to the technical field of mechanical sealing elements, and relates to a sealing ring, especially an environmentally friendly sealing ring. Background Technology

[0002] Sealing rings are fundamental components widely used in hydraulic and pneumatic systems, pipeline connections, and mechanical equipment. Their function is to prevent fluid or solid particles from leaking between adjacent mating surfaces and to prevent external impurities such as dust and moisture from entering the interior of machinery. Currently, mainstream sealing rings on the market have relatively high coefficients of friction, making them prone to wear during application. Furthermore, in dynamic sealing applications, they easily generate significant frictional heat, leading to accelerated aging of the rubber material, increased equipment maintenance costs, and downtime risks.

[0003] In order to reduce wear during friction, it is usually necessary to apply an extra amount of grease or lubricating oil to the outside of the sealing ring during use. This method of applying lubricating oil or grease to the outside of the sealing ring not only increases the mechanical assembly process, but also makes it easy for the lubricant to be lost and contaminate the working medium. In addition, grease or lubricating oil is also sticky and easily attracts dust and impurities, affecting the sealing effect and the cleanliness of the equipment, making it unsuitable for high-requirement applications such as food, medicine, and precision instruments.

[0004] Therefore, it is necessary to provide a sealing ring that can reduce the coefficient of friction and wear without requiring the application of excessive grease or oil to the outside of the sealing ring. Utility Model Content

[0005] The purpose of this utility model is to provide an environmentally friendly sealing ring to solve the technical problems in the prior art where applying grease or lubricating oil to the outside of the sealing ring can easily lead to lubricant loss, contamination of the working medium, and adsorption of dust and impurities.

[0006] To achieve the above objectives, the specific technical solution of this utility model is as follows: An environmentally friendly sealing ring includes an elastic sealing base, a sealing skeleton, and multiple lubricating pellets. The sealing skeleton is annular in shape, and its cross-section is an inverted "n" shape with an open top. The elastic sealing base is disposed inside the sealing skeleton, and the axial height of the sealing skeleton is lower than the axial height of the elastic sealing base. The sealing surface of the elastic sealing substrate extends from the top of the sealing frame and then extends toward the bottom side of the sealing frame. The interior of the elastic sealing substrate is hollow, forming a filling cavity. Multiple lubricating capsules are filled and disposed in the filling cavity. Each lubricating capsule includes a capsule wall material and a lubricant, and the lubricant is sealed and encapsulated by the capsule wall material.

[0007] The lubricant is a solid lubricant, including graphene or molybdenum disulfide.

[0008] The capsule wall material is a heat-sensitive and pressure-sensitive thin-walled material.

[0009] The beneficial effects of this utility model are as follows: This utility model provides an environmentally friendly sealing ring by setting the interior of the elastic sealing substrate into a cavity, filling the cavity with multiple lubricating pellets encapsulated with solid lubricant. The pellet wall material is selected to be heat-sensitive and pressure-sensitive. During equipment operation, when the sealing ring rubs against the shaft or hole wall, the localized heat and contact pressure generated by the friction reach the rupture threshold of the lubricating pellets. The pellet wall material softens due to heat or ruptures under pressure, releasing the encapsulated solid lubricant in the area of ​​most intense friction or compression, based on the force and heat conditions. The released solid lubricant seeps to the outer wall of the elastic sealing substrate under the action of molecular motion, forming a lubricating film on the friction surface of the sealing ring, thereby effectively reducing the friction coefficient and wear of the sealing ring. As the equipment continues to operate, the lubricating pellets will continuously rupture "on demand," continuously providing new lubrication to the contact surface, thus achieving a long-lasting self-lubricating effect.

[0010] The technical solution provided by this utility model provides a lubricant that is not easily lost or contaminated with the working medium. The solid lubricant is also less likely to attract dust and impurities, which can effectively slow down the wear rate of the sealing ring and extend its service life by 2-3 times compared with traditional sealing rings. Its "release on demand" characteristic also makes it stable under complex working conditions such as wide temperature range, variable speed, and variable load. It is suitable for promotion and application in equipment with high or extremely high cleanliness requirements, such as food, medicine, and precision instruments. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a half-sectional view of the present invention from the main view direction; Figure 3 for Figure 2 A magnified view of a portion of point A in the middle; Figure 4 This is a cross-sectional view of the lubricating capsules of this utility model.

[0012] The markings in the diagram are as follows: 1. Elastic sealing substrate, 2. Sealing skeleton, 3. Lubricating capsule, 4. Sealing surface, 5. Filling cavity, 6. Capsule wall material, 7. Lubricant. Detailed Implementation

[0013] To better understand the purpose, structure, and function of this utility model, a more detailed description of this utility model is provided below with reference to the accompanying drawings.

[0014] like Figures 1 to 3 As shown, this utility model provides an environmentally friendly sealing ring, which includes an elastic sealing substrate 1, a sealing skeleton 2, and multiple lubricating pellets 3. The sealing skeleton 2 is annular in shape, and its cross-section is an inverted "n" shape with an open top. The elastic sealing substrate 1 is disposed within the sealing skeleton 2, and the axial height of the sealing skeleton 2 is lower than the axial height of the elastic sealing substrate 1. Together, they constitute the main body of the environmentally friendly sealing ring. In this embodiment, to ensure good mechanical strength, elasticity, and chemical resistance, the preferred material is bio-based polymer materials such as bio-based nylon PA1010, PA610, or bio-based thermoplastic polyurethane extracted from renewable resources such as castor oil and corn starch. To further optimize the performance of the elastic sealing substrate 1, biodegradable plasticizers such as citrate esters can be added to improve its low-temperature toughness, and natural fibers such as flax fiber and bamboo fiber can be added as reinforcing agents to improve the material's wear resistance and dimensional stability.

[0015] The sealing surface 4 of the elastic sealing substrate 1 extends from the top of the sealing frame 2 and extends toward the bottom side of the sealing frame 2, and is used to fit onto mechanical parts such as shafts that need to be sealed, so as to provide a seal for them.

[0016] Furthermore, to achieve the self-lubricating performance of the sealing ring, this embodiment features a hollow interior for the elastic sealing substrate 1, forming a filling cavity 5. Since the elastic sealing substrate 1 is hollow, its support performance is significantly reduced. The sealing skeleton 2 provides additional support for the elastic sealing substrate 1, preventing it from undergoing severe deformation or even breakage due to excessive friction or extrusion pressure, thereby improving the mechanical strength and extrusion resistance of the sealing ring.

[0017] At the same time, such as Figure 2 , Figure 3 As shown, a plurality of the lubricating capsules 3 are filled in the filling cavity 5, so that when the sealing ring as a whole or in part generates local heat due to friction and the contact point pressure increases to a threshold, the lubricating capsules 3 in this area will rupture and release the lubricant 7.

[0018] Specifically, in this embodiment, the lubricating capsule 3 includes a capsule wall material 6 and a lubricant 7, wherein the lubricant 7 is sealed and encapsulated by the capsule wall material 6, such as... Figure 4As shown. The capsule wall material 6 is a thin-walled material produced from heat-sensitive and pressure-sensitive materials. In this embodiment, a thin-walled material made of chitosan and its complex is preferred. When the capsule wall material 6 experiences excessive local heat or the contact point pressure reaches a threshold, it ruptures, releasing the lubricant 7. Since the elastic sealing matrix 1 and sealing skeleton 2 in this application are selected as bio-based polymer materials, the lubricant 7, after diffusing in the filling cavity 5 of the elastic sealing matrix 1, can quickly seep out from the side walls of the elastic sealing matrix 1 and the sealing skeleton 2, forming a tough lubricating film on the outer wall of the elastic sealing matrix 1 and the sealing skeleton 2, thereby effectively reducing the overall friction coefficient and wear of the sealing ring. As the equipment continues to operate and the lubrication process continues, the lubricating capsules 3 in the filling cavity 5 are continuously consumed, ruptured, and continuously release new lubricant 7 to the contact surface, thereby achieving a long-term self-lubricating effect of the sealing ring.

[0019] Furthermore, in order to reduce the viscosity and fluidity of the lubricant 7 and make it less likely to leak and contaminate the working medium, the lubricant 7 in this embodiment is a solid lubricant 7, including graphene or molybdenum disulfide.

[0020] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. An environmentally friendly sealing ring, characterized in that: It includes an elastic sealing base (1), a sealing skeleton (2), and a plurality of lubricating pellets (3). The sealing skeleton (2) is in the shape of a ring, and the cross-section of the sealing skeleton (2) is an inverted "n" shape with the top surface open. The elastic sealing base (1) is disposed inside the sealing skeleton (2), and the axial height of the sealing skeleton (2) is lower than the axial height of the elastic sealing base (1). The sealing surface (4) of the elastic sealing substrate (1) extends from the top of the sealing frame (2) and extends toward the bottom side of the sealing frame (2). The interior of the elastic sealing substrate (1) is hollow, forming a filling cavity (5). Multiple lubricating capsules (3) are filled in the filling cavity (5). The lubricating capsules (3) include capsule wall material (6) and lubricant (7). The lubricant (7) is sealed and wrapped by the capsule wall material (6).

2. The environmentally friendly sealing ring according to claim 1, characterized in that: The lubricant (7) is a solid lubricant (7), including graphene or molybdenum disulfide.

3. The environmentally friendly sealing ring according to claim 1, characterized in that: The capsule wall material (6) is a heat-sensitive and pressure-sensitive thin-walled material.

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