Cylinder sleeve sealing structure

Abstract

The utility model discloses a cylinder sleeve sealing structure, which belongs to the field of mechanical engineering and comprises a cylinder sleeve body, a piston component is mounted in the cylinder sleeve body, and four groups of mounting grooves are formed in one end, close to the outer side, of the cylinder sleeve body. The piston assembly, the sealing assembly, the dirt containing ring, the dustproof ring and the step seal are arranged on the four sets of mounting grooves correspondingly, the situation that the sealing washer is extruded and deformed can be prevented by arranging the check ring to limit the sealing ring, dust prevention is achieved by arranging the dirt containing ring and the dustproof ring, and the step seal is arranged, so that the sealing effect is improved. And oil and the like flowing through the cylinder sleeve are prevented from leaking.

Description

Technical Field

[0001] The utility model relates to the field of mechanical engineering, and more specifically, to a cylinder liner sealing structure. Background Technique

[0002] The sealing structure design of the shaft sleeve aims to prevent lubricating oil or other liquids from leaking around the shaft and prevent external dust, moisture or other impurities from entering the inside of the shaft sleeve.

[0003] Most of the existing shaft sleeve sealing structures directly use rubber sealing rings for sealing. Some single sealing rings are in an environment of chemical substances, temperature or pressure for a long time, resulting in accelerated aging and wear of the sealing rings, thus affecting the service life of the sealing rings.

[0004] Therefore, it is necessary to propose a cylinder liner sealing structure. Content of the Utility Model

[0005] 1. Technical Problems to be Solved

[0006] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a cylinder liner sealing structure, which can realize the limitation of the sealing ring to prevent the sealing gasket from being extruded and deformed.

[0007] 2. Technical Solutions

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A cylinder liner sealing structure includes a cylinder liner body. A piston assembly is installed inside the cylinder liner body. Four groups of installation grooves are provided at one end of the cylinder liner body close to the outside. A piston assembly, a sealing assembly, a dirt trap ring, a dust-proof ring and a Strut seal are respectively arranged on the four groups of installation grooves.

[0010] Furthermore, the piston assembly includes a piston rod. The piston rod is installed inside the cylinder liner body. Two groups of wear-resistant rings are arranged at one end of the piston rod close to the inside of the cylinder liner body. A sealing ring is arranged on the piston rod between the wear-resistant rings.

[0011] Furthermore, the sealing assembly includes a sealing gasket. The sealing gasket is arranged on the installation groove inside the piston assembly. Retaining rings are installed on both sides of the sealing gasket.

[0012] Furthermore, the dirt trap ring is installed in the installation groove inside the sealing assembly. The dirt trap ring is made of an elastic material.

[0013] Furthermore, the Strut seal is composed of a rubber O-ring and a polytetrafluoroethylene ring.

[0014] Further, the dust-proof ring is installed on the installation groove on the outermost side of the cylinder liner body, and the dust-proof ring is made of rubber.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of the present utility model are as follows:

[0017] In this solution, by setting a retaining ring to limit the sealing ring, it is prevented that the sealing gasket is extruded and deformed, thereby prolonging the service life of the sealing ring; by setting a dirt-catching ring and a dust-proof ring for dust prevention, and by setting a Struthers seal to prevent leakage of oil flowing through the cylinder liner. Description of the drawings

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 is a cross-sectional schematic diagram of a partial structure of the present utility model;

[0020] Figure 3 is a cross-sectional schematic diagram of the installation groove structure of the present utility model;

[0021] Figure 4 is an exploded schematic diagram of the structure of the present utility model;

[0022] Figure 5 is a schematic structural diagram of the sealing assembly of the present utility model;

[0023] Figure 6 is a schematic structural diagram of the dirt-catching ring of the present utility model;

[0024] Figure 7 is a schematic structural diagram of the Struthers seal of the present utility model.

[0025] Explanation of the reference numerals in the drawings:

[0026] 1. Cylinder liner body; 2. Piston assembly; 21. Piston rod; 22. Wear-resistant ring; 23. Sealing ring; 3. Sealing assembly; 31. Sealing gasket; 32. Retaining ring; 4. Dirt-catching ring; 5. Struthers seal; 6. Installation groove; 7. Dust-proof ring. Specific implementation manners

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] Embodiment 1:

[0031] Please refer to Figures 1-7 , a cylinder liner sealing structure, including a cylinder liner body 1, a piston assembly 2 is installed inside the cylinder liner body 1. Four groups of installation grooves 6 are opened at one end of the cylinder liner body 1 close to the outside. A piston assembly 2, a sealing assembly 3, a dirt collecting ring 4, a dust-proof ring 7 and a Struthers seal 5 are respectively arranged on the four groups of installation grooves 6. By setting a retaining ring 32, the sealing ring 23 is limited to prevent the sealing gasket 31 from being squeezed and deformed. By setting the dirt collecting ring 4 and the dust-proof ring 7 for dust prevention, and by setting the Struthers seal 5, it is possible to prevent the leakage of oil flowing through the cylinder liner, etc.

[0032] According to Figure 2 , the piston assembly 2 includes a piston rod 21. The piston rod 21 is installed inside the cylinder liner body 1. Two groups of wear-resistant rings 22 are arranged at one end of the piston rod 21 close to the inside of the cylinder liner body 1. A sealing ring 23 is arranged on the piston rod 21 between the two groups of wear-resistant rings 22. By setting the piston assembly 2 in this way, the rationality of the cylinder liner structure is ensured and the structural stability is improved.

[0033] According to Figures 1-5 , the sealing assembly 3 includes a sealing gasket 31. The sealing gasket 31 is arranged on the installation groove 6 inside the piston assembly 2. Retaining rings 32 are installed on both sides of the sealing gasket 31. By setting the sealing assembly 3, it is ensured that the sealing gasket 31 is not extruded and deformed by external factors, thereby affecting the sealing performance of the cylinder liner.

[0034] According to Figures 1-6, the dirt collection ring 4 is installed in the installation groove 6 inside the sealing assembly 3. The dirt collection ring 4 is made of elastic material. By setting the dirt collection ring 4, the anti-side load capacity of the oil cylinder is improved, and at the same time, external small particle pollutants are blocked from entering the shaft seal area.

[0035] According to Figure 7 , the stepped seal 5 is composed of a rubber O-ring and a polytetrafluoroethylene ring. By setting the stepped seal 5, high-pressure oil and other fuels passing through the inside of the cylinder liner are isolated from the outside.

[0036] According to Figures 1-3 , the dust-proof ring 7 is installed on the outermost installation groove 6 of the cylinder liner body 1. The piston assembly 2 is made of rubber. By setting the dust-proof ring 7, some large particle pollutants are prevented from entering the cylinder liner.

[0037] Working principle: During use, the dust-proof ring 7, the sealing assembly 3, the dirt collection ring 4, and the stepped seal 5 are installed in the installation groove 6. Larger particle size pollutants and hard pollutants attached to the piston rod are removed through the sealing assembly 3; by setting the dust-proof ring 7, the sealing ring is limited to prevent it from deforming due to external factors; by setting the dirt collection ring 4, external dust particles and dirt are effectively blocked from entering and affecting the use of the cylinder liner; by setting the stepped seal 5, the sealing performance of the cylinder liner is improved.

[0038] The above is only the preferred specific implementation manner of the present utility model; however, the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its improved concept, makes equivalent replacements or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A cylinder liner sealing structure, comprising a cylinder liner body (1), characterized in that: A piston assembly (2) is installed in the cylinder liner body (1), and four groups of mounting grooves (6) are provided at one end of the cylinder liner body (1) close to the outside, and the four groups of mounting grooves (6) are respectively provided with a piston assembly (2), a sealing assembly (3), a dirt retaining ring (4), a dustproof ring (7) and a step seal (5).

2. A cylinder liner sealing structure according to claim 1, characterized in that: The piston assembly (2) comprises a piston rod (21), wherein the piston rod (21) is mounted inside the cylinder liner body (1), and two groups of wear-resistant rings (22) are arranged at one end of the piston rod (21) close to the inside of the cylinder liner body (1), and a sealing ring (23) is arranged on the piston rod (21) between the wear-resistant rings (22).

3. A cylinder liner sealing structure according to claim 1, characterized in that: The sealing assembly (3) comprises a sealing gasket (31), which is arranged on a mounting groove (6) on the inner side of the piston assembly (2), and retaining rings (32) are installed on both sides of the sealing gasket (31).

4. A cylinder liner sealing structure according to claim 1, characterized in that: The dirt-receiving ring (4) is installed in a mounting groove (6) on the inner side of the sealing component (3), and the dirt-receiving ring (4) is made of elastic material.

5. The cylinder liner sealing structure according to claim 1, characterized in that: The step seal (5) is composed of a rubber O-ring and a polytetrafluoroethylene ring.

6. A cylinder liner sealing structure according to claim 1, characterized in that: The dustproof ring (7) is installed on the outermost installation groove (6) of the cylinder sleeve body (1), and the dustproof ring (7) is made of rubber.

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