High-strength static sealing ring for hydraulic oil cylinder guide sleeve

Abstract

The utility model discloses a high-strength static sealing ring for a hydraulic oil cylinder guide sleeve, and relates to the technical field of sealing pieces. The sealing device comprises a sealing assembly and a composite assembly, the sealing assembly comprises a sealing ring, a groove is formed in the sealing ring, and a sealing strip is arranged in the groove; the composite assembly comprises a base layer, the surface of the base layer is fixedly connected with a high-temperature-resistant layer, the surface of the high-temperature-resistant layer is fixedly connected with a reinforcing layer, the surface of the reinforcing layer is fixedly connected with an oil-resistant layer, and the surface of the oil-resistant layer is fixedly connected with an anti-aging layer. Due to the arrangement of the composite assembly, the high temperature resistance and the use strength of the sealing ring can be improved, the sealing ring has better thermal stability and heat resistance, the hydraulic oil cylinder can keep good sealing performance in a high-temperature environment, the service life of a hydraulic oil cylinder sealing system is prolonged, the maintenance frequency and the cost for replacing a sealing piece are reduced, and the service life of the hydraulic oil cylinder is prolonged. Therefore, the total maintenance cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealing elements, in particular to a high-strength static sealing ring for a guide sleeve of a hydraulic oil cylinder. Background Art

[0002] The hydraulic cylinder guide sleeve is a common hydraulic component, usually used to support and guide the moving cylinder. It can effectively reduce wear and friction, improve the service life and movement accuracy of the cylinder. The hydraulic cylinder guide sleeve is an important component of the hydraulic system, playing the role of supporting and guiding the movement of the cylinder. Usually, in order to ensure the sealing performance and stability of the guide sleeve, a high-strength static seal ring is used.

[0003] However, the hydraulic cylinder guide sleeve sealing ring in the prior art ages rapidly after being used for a long time in a high temperature environment, which greatly reduces the strength and sealing performance of the sealing ring, and the elasticity of the sealing ring lip also decreases, which increases the fitting gap. For this reason, we provide a high-strength static sealing ring for a hydraulic cylinder guide sleeve to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a high-strength static sealing ring for a hydraulic cylinder guide sleeve. By coordinating a sealing component and a composite component, the utility model solves the problem that the hydraulic cylinder guide sleeve sealing ring in the prior art is that the use strength is affected by high temperature, resulting in rapid aging of the material and the elasticity of the sealing ring lip also decreases.

[0005] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0006] The utility model is a high-strength static seal ring for a hydraulic cylinder guide sleeve, comprising a seal assembly and a composite assembly, wherein the seal assembly comprises a seal ring, a groove is provided inside the seal ring, and a seal strip is provided inside the groove;

[0007] The composite component includes a base layer, a high temperature resistant layer is fixedly connected to the surface of the base layer, a reinforcing layer is fixedly connected to the surface of the high temperature resistant layer, an oil resistant layer is fixedly connected to the surface of the reinforcing layer, an aging resistant layer is fixedly connected to the surface of the oil resistant layer, and the sealing ring is composited by the base layer, the high temperature resistant layer, the reinforcing layer, the oil resistant layer and the aging resistant layer.

[0008] The utility model is further configured that the base layer is made of fluororubber and the thickness of the base layer is 2MM.

[0009] The utility model is further configured that the high temperature resistant layer is made of chloroprene rubber, and the reinforcing layer is made of polyurethane.

[0010] The utility model is further configured that the oil-resistant layer is made of butyl rubber, and the anti-aging layer is made of silicone rubber.

[0011] The utility model is further configured such that the oil-resistant layer has the same thickness as the aging-resistant layer, and the inner diameter of the groove is smaller than the diameter of the sealing strip.

[0012] The utility model is further configured such that the cross section of the sealing ring is Y-shaped, and the inner side of the sealing ring is designed to be arc-shaped.

[0013] The utility model has the following beneficial effects:

[0014] The utility model can increase the high temperature resistance and use strength of the sealing ring through the arrangement of the composite component, so that it has better thermal stability and heat resistance. The hydraulic cylinder can maintain good sealing performance in a high temperature environment, and the service life of the hydraulic cylinder sealing system is extended to reduce the maintenance frequency and the cost of replacing the seals, thereby reducing the overall maintenance cost.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a structural stereogram of a high-strength static seal ring for a hydraulic cylinder guide sleeve.

[0018] Figure 2 A partial cross-sectional view of the sealing ring and sealing strip in a high-strength static sealing ring for a hydraulic cylinder guide sleeve.

[0019] Figure 3 A cross-sectional view of the sealing ring and sealing strip in a high-strength static seal for a hydraulic cylinder guide sleeve.

[0020] Figure 4 Schematic diagram of the material composition of the composite components in the high-strength static seal ring for the hydraulic cylinder guide sleeve.

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] 1. Sealing component; 2. Composite component; 101. Sealing ring; 102. Groove; 103. Sealing strip; 201. Base layer; 202. High temperature resistant layer; 203. Reinforcement layer; 204. Oil resistant layer; 205. Aging resistant layer. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiment 1

[0025] See also Figure 1-4 The utility model is a high-strength static seal ring for a hydraulic cylinder guide sleeve, comprising a seal component 1 and a composite component 2. The seal component 1 comprises a seal ring 101, a groove 102 is provided inside the seal ring 101, and a seal strip 103 is provided inside the groove 102;

[0026] The composite component 2 includes a base layer 201, a high temperature resistant layer 202 is fixedly connected to the surface of the base layer 201, a reinforcing layer 203 is fixedly connected to the surface of the high temperature resistant layer 202, an oil resistant layer 204 is fixedly connected to the surface of the reinforcing layer 203, and an aging resistant layer 205 is fixedly connected to the surface of the oil resistant layer 204. The sealing ring 101 is composited by the base layer 201, the high temperature resistant layer 202, the reinforcing layer 203, the oil resistant layer 204 and the aging resistant layer 205.

[0027] Specifically, the sealing ring 101 can provide a seal between the sealing rod and the guide sleeve, effectively preventing leakage of hydraulic oil in the hydraulic system, while also being able to withstand certain pressure and temperature changes. The sealing strip 103 can be inserted into the groove of the guide sleeve together with the sealing ring 101, playing a supporting role from the inside of the sealing ring 101, and increasing the fit between the sealing ring 101 and the sealing rod. Specific embodiment 2

[0029] See also Figure 1-4 On the basis of the specific embodiment 1, the base layer 201 is made of fluororubber, the thickness of the base layer 201 is 2MM, the high temperature resistant layer 202 is made of chloroprene rubber, and the reinforcing layer 203 is made of polyurethane.

[0030] Specifically, the base layer 201 is made of fluororubber, which can maintain its sealing performance at higher temperatures and can usually work in a temperature range of -20°C to 200°C. The high temperature resistant layer 202 is made of chloroprene rubber, which has good heat resistance and can still maintain good physical properties at high temperatures, reducing the impact of high temperature on the sealing ring 101. The reinforcement layer 203 is made of polyurethane, which has the advantages of wear resistance, oil resistance, heat resistance, aging resistance, impact resistance and high strength, and can effectively improve the use strength of the sealing ring 101. Specific embodiment three

[0032] See also Figure 1-4 On the basis of the first and second specific embodiments, the oil-resistant layer 204 is made of butyl rubber, the aging-resistant layer 205 is made of silicone rubber, the oil-resistant layer 204 and the aging-resistant layer 205 have the same thickness, the inner diameter of the groove 102 is smaller than the diameter of the sealing strip 103, the cross-section of the sealing ring 101 is Y-shaped, and the inner side of the sealing ring 101 is designed as an arc.

[0033] Specifically, the oil-resistant layer 204 is made of butyl rubber, which has good oil resistance and is not prone to expansion, softening or deformation when used in high-temperature oil. The aging-resistant layer 205 is made of silicone rubber, which can work in extremely high-temperature environments and can usually withstand temperatures up to 250°C or even higher. It can resist corrosion from various chemical media, including acids, alkalis, solvents, etc., and effectively improves the aging resistance of the sealing ring 101. The sealing ring 101 has a Y-shaped cross-section, which can increase the contact area between the piston or the shaft, and therefore has better wear resistance and is not easily damaged under high-speed and high-pressure conditions.

[0034] The working principle of the utility model is as follows: chloroprene rubber has good heat resistance, which can improve the high temperature resistance of the sealing ring 101; the reinforcing layer 203 is made of polyurethane material, which can effectively improve the use strength of the sealing ring 101; the oil-resistant layer 204 is made of butyl rubber material, so that the sealing ring 101 is not easy to expand, soften or deform when used in high-temperature oil; the anti-aging layer 205 is made of silicone rubber material, which effectively improves the anti-aging performance of the sealing ring 101;

[0035] The cross section of the sealing ring 101 is Y-shaped, which can increase the contact area between the piston or the shaft. Therefore, it has better wear resistance and is not easy to be damaged under high speed and high pressure conditions. The sealing strip 103 can be inserted into the groove of the guide sleeve together with the sealing ring 101, playing a supporting role from the inside of the sealing ring 101, and increasing the fit between the sealing ring 101 and the sealing rod.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high-strength static seal ring for a hydraulic cylinder guide sleeve, comprising a seal component (1) and a composite component (2), characterized in that: The sealing assembly (1) comprises a sealing ring (101), a groove (102) is provided inside the sealing ring (101), and a sealing strip (103) is provided inside the groove (102); The composite component (2) comprises a base layer (201), a high temperature resistant layer (202) is fixedly connected to the surface of the base layer (201), a reinforcing layer (203) is fixedly connected to the surface of the high temperature resistant layer (202), an oil resistant layer (204) is fixedly connected to the surface of the reinforcing layer (203), an aging resistant layer (205) is fixedly connected to the surface of the oil resistant layer (204), and the sealing ring (101) is composited by the base layer (201), the high temperature resistant layer (202), the reinforcing layer (203), the oil resistant layer (204) and the aging resistant layer (205).

2. The high-strength static seal ring for the hydraulic cylinder guide sleeve according to claim 1 is characterized in that: The base layer (201) is made of fluororubber and has a thickness of 2 mm.

3. The high-strength static seal ring for the hydraulic cylinder guide sleeve according to claim 1 is characterized in that: The high temperature resistant layer (202) is made of chloroprene rubber, and the reinforcing layer (203) is made of polyurethane.

4. The high-strength static seal ring for the hydraulic cylinder guide sleeve according to claim 1 is characterized in that: The oil-resistant layer (204) is made of butyl rubber, and the anti-aging layer (205) is made of silicone rubber.

5. The high-strength static seal ring for the hydraulic cylinder guide sleeve according to claim 1 is characterized in that: The oil-resistant layer (204) and the anti-aging layer (205) have the same thickness, and the inner diameter of the groove (102) is smaller than the diameter of the sealing strip (103).

6. The high-strength static seal ring for the hydraulic cylinder guide sleeve according to claim 1 is characterized in that: The sealing ring (101) has a Y-shaped cross section, and the inner side of the sealing ring (101) is designed to be an arc shape.

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