Lining type rubber sealing ring

Abstract

The utility model discloses a lining type rubber sealing ring which comprises an outer ring body and an inner ring body in the middle of the outer ring body, a reinforcing interlayer is located in the outer ring body and comprises two sets of connecting layers, supporting layers and a reinforcing layer, the supporting layers are arranged between the two sets of connecting layers, and the reinforcing layer is arranged between the two sets of connecting layers. The rubber sealing ring comprises two groups of supporting layers, and a reinforcing layer is connected between the two groups of supporting layers, so that the structural arrangement can effectively solve the problems that the rubber sealing ring has higher requirements on tensile strength and bending resistance and the contact surface of the sealing ring on a bearing is faced with friction under some working conditions, and the service life of the rubber sealing ring is prolonged. And the requirement on the wear resistance of the rubber sealing ring is high.

Description

Technical Field

[0001] The utility model belongs to the technical field related to rubber sealing rings, and particularly relates to a lined rubber sealing ring. Background Art

[0002] The rubber sealing ring is an annular cover composed of one or more parts, which is fixed on a ring or washer of the bearing and contacts with the other ring or washer or forms a narrow labyrinth gap to prevent the leakage of lubricating oil and the intrusion of foreign objects.

[0003] However, the existing inner-lined rubber sealing ring has the following problems when in use: in order to ensure the sealing effect, the size of the rubber sealing ring is usually slightly smaller than the installation position such as the workpiece bearing during design. During installation, the size of the rubber sealing ring needs to be stretched and expanded before it can be installed. Although the rubber sealing ring has a certain elasticity, it must be kept taut at all times after being installed on the machine workpiece, which places high requirements on the tensile strength and bending resistance of the rubber sealing ring. In addition, after the rubber sealing ring is installed, the contact surface of the sealing ring on some machine workpieces, such as the bearing, will face friction, which places high requirements on the wear resistance of the rubber sealing ring. Utility Model Content

[0004] The purpose of the utility model is to provide a lined rubber sealing ring to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lined rubber sealing ring, comprising an outer ring body and an inner ring body in the middle of the outer ring body;

[0006] The strengthening interlayer is located in the outer ring body, and the strengthening interlayer includes a connecting layer, a supporting layer and a strengthening layer. There are two groups of connecting layers, and a supporting layer is arranged between the two groups of connecting layers. There are two groups of supporting layers, and a strengthening layer is connected between the two groups of supporting layers.

[0007] Preferably, the reinforcement layer is a rubber braided layer structure.

[0008] Preferably, the outer ring body and the connecting layer are both made of nitrile rubber material with good oil resistance and strong adhesion.

[0009] Preferably, a groove is provided between the inner ring body and the outer ring body, and an inner and outer ring connecting seat is provided at the bottom of the groove.

[0010] Preferably, the support layer is fixedly connected to the reinforcement layer by bonding.

[0011] Compared with the prior art, the present invention provides a lined rubber seal ring with the following features:

[0012] Beneficial effects:

[0013] 1. In the present invention, the reinforcing layer of the rubber braided layer structure provided in the reinforcing interlayer can improve the bending resistance and enhance the toughness of the rubber sealing ring when the rubber sealing ring needs to be bent during installation.

[0014] 2. In the present invention, the strong bonding property of the nitrile rubber material is used to increase the connection firmness between the outer ring body and the reinforcing interlayer. The wear resistance of the nitrile rubber material is also used to enhance the wear resistance of the rubber sealing ring during use, thereby extending the service life of the rubber sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall connection structure of the rubber sealing ring of the present utility model.

[0016] Figure 2 This is a schematic diagram of the structure of the position of the reinforced interlayer in the rubber sealing ring of the utility model.

[0017] Figure 3 It is a schematic diagram of the overall planar connection structure of the rubber sealing ring of the present utility model.

[0018] Figure 4 This is a schematic diagram of the internal connection structure of the reinforced interlayer of the present invention.

[0019] In the figure: 1. Outer ring; 2. Reinforced interlayer; 3. Groove; 4. Inner ring; 5. Inner and outer ring connecting seat; 6. Connecting layer; 7. Support layer; 8. Reinforced layer. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] The utility model provides Figure 1-4 The liner type rubber sealing ring shown includes an outer ring body 1 and an inner ring body 4 in the middle of the outer ring body 1;

[0022] The reinforcing interlayer 2 is located inside the outer ring body 1 and includes a connecting layer 6, a supporting layer 7 and a reinforcing layer 8. There are two groups of connecting layers 6, and a supporting layer 7 is provided between the two groups of connecting layers 6. There are two groups of supporting layers 7, and a reinforcing layer 8 is provided between the two groups of supporting layers 7.

[0023] In the present invention, when the rubber sealing ring is installed, it is located in the reinforcing interlayer 2 inside the outer ring body 1. When the outer wall of the outer ring body 1, which is made of nitrile rubber material and the connecting layer 6, contacts the inner wall of the workpiece installation position, due to the excellent oil resistance of the nitrile rubber material, it can achieve a better oil sealing effect and prevent the outer ring body 1 from being contaminated by oil. During installation, the reinforcing layer 8 with a woven structure in the reinforcing interlayer 2 enhances the bending resistance of the outer ring body 1. After installation, the connecting workpiece is connected to the workpiece to be connected through the opening in the middle of the inner ring body 4.

[0024] In an optional embodiment, the reinforcement layer 8 is a rubber braided layer structure.

[0025] In this embodiment, the reinforcement layer 8 having a rubber braided layer structure can improve the bending resistance of the outer ring body 1 and the toughness of the outer ring body 1 because the rubber sealing ring needs to be bent when the rubber sealing ring is installed.

[0026] In an optional embodiment, the outer ring body 1 and the connecting layer 6 are both made of a nitrile rubber material with good oil resistance and strong adhesion.

[0027] In this embodiment, the connection layer 6 is more firmly connected to the support layer 7 and the outer ring body 1 by virtue of the strong bonding property of nitrile rubber. Similarly, the outer ring body 1 is firmly connected to the connection layer 6 by virtue of the bonding property of nitrile rubber. The high wear resistance of nitrile rubber is also utilized to improve the wear resistance of the outer ring body 1 during use and extend its service life.

[0028] In an optional embodiment, a groove 3 is provided between the inner ring body 4 and the outer ring body 1 , and an inner and outer ring connecting seat 5 is provided at the bottom of the groove 3 .

[0029] In an optional embodiment, the support layer 7 is fixedly connected to the reinforcement layer 8 by bonding.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lined rubber sealing ring, comprising an outer ring body (1) and an inner ring body (4) in the middle of the outer ring body (1); Its characteristics are: The strengthening interlayer (2) is located in the outer ring body (1), and the strengthening interlayer (2) includes a connecting layer (6), a supporting layer (7) and a strengthening layer (8). The connecting layer (6) is provided in two groups, and a supporting layer (7) is provided between the two groups of connecting layers (6). The supporting layer (7) is provided in two groups, and a strengthening layer (8) is provided between the two groups of supporting layers (7).

2. The lined rubber sealing ring according to claim 1, characterized in that: The reinforcement layer (8) is a rubber braided layer structure.

3. The lined rubber sealing ring according to claim 1, characterized in that: The outer ring body (1) and the connecting layer (6) are both made of a nitrile rubber material with good oil resistance and strong adhesion.

4. The lined rubber sealing ring according to claim 1, characterized in that: A groove (3) is provided between the inner ring body (4) and the outer ring body (1), and an inner and outer ring connecting seat (5) is provided at the bottom of the groove (3).

5. The lined rubber sealing ring according to claim 1, characterized in that: The support layer (7) is fixedly connected to the reinforcement layer (8) by bonding.

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