阅读说明：本技术 一种密封圈及密封装置 (Sealing ring and sealing device ) 是由 欧喜兵 于 2020-06-04 设计创作，主要内容包括：本发明公开了一种密封圈及密封装置,包括：轴套,用于套装在旋转轴上,内表面具有弹性抵接旋转轴的第一环部；环盖,一体连接所述轴套的端部,背向所述轴套的端面具有弹性抵接机壳的第二环部。本发明的一种密封圈及密封装置,能够提高密封性能,适应旋转轴的轴向窜动变大的情况。(The invention discloses a sealing ring and a sealing device, comprising: the shaft sleeve is sleeved on the rotating shaft, and the inner surface of the shaft sleeve is provided with a first ring part which is elastically abutted against the rotating shaft; the ring cover is integrally connected with the end part of the shaft sleeve, and the end surface back to the shaft sleeve is provided with a second ring part which is elastically abutted against the shell. The sealing ring and the sealing device can improve the sealing performance and adapt to the condition that the axial movement of the rotating shaft is increased.)

1. A seal ring, comprising:

a sleeve (100) which is sleeved on the rotating shaft and has a first ring part (110) elastically abutted against the rotating shaft on the inner surface;

and the ring cover (120) is integrally connected with the end part of the shaft sleeve (100), and the end surface back to the shaft sleeve (100) is provided with a second ring part (130) which is elastically abutted against the shell.

2. A sealing ring according to claim 1, characterized in that the first ring part (110) is a sealing lip.

3. A seal ring according to claim 2, characterized in that said first ring portion (110) is located at an end of said sleeve (100) remote from said ring cover (120).

4. A sealing ring according to claim 2, characterized in that the inner edge of the first ring part (110) is arranged obliquely towards the side of the ring cover (120).

5. A sealing ring according to claim 1, characterized in that the number of said first ring portions (110) is two.

6. A sealing ring according to claim 1, characterized in that the outer surface of the sleeve (100) is provided with a third ring portion (140).

7. A sealing ring according to claim 1, characterized in that the side of the ring cover (120) close to the sleeve (100) is provided with a fourth ring portion (150).

8. A sealing ring according to claim 1, characterized in that a conical ring (160) is arranged at the connection of the shaft sleeve (100) and the ring cover (120), and the shaft sleeve (100) and the ring cover (120) are connected through the conical ring (160).

9. A sealing arrangement comprising a sealing ring according to any one of claims 1 to 8.

10. The sealing device according to claim 9, further comprising a first retaining ring (170) and a second retaining ring (180), wherein the first retaining ring (170) and the second retaining ring (180) are sleeved on the rotating shaft, the first retaining ring (170) is fixed to the rotating shaft, the second retaining ring (180) is fixed to the housing, one end of the shaft sleeve (100) away from the ring cover (120) is accommodated between the first retaining ring (170) and the rotating shaft of the housing, and the outer edge of the ring cover (120) is accommodated between the second retaining ring (180) and the housing.

Technical Field

The invention relates to a sealing technology, in particular to a sealing ring and a sealing device.

Background

In the equipment of ore machinery and cement industry, can be provided with the casing, the rotation axis can be installed to the casing, and the rotation axis can set up the sealing washer with being connected of casing.

Wherein, the casing forms workspace, and the rotation axis carries out power transmission, and the sealing washer separates workspace and outside.

Specifically, the seal ring may have a ring that is in close contact with the rotating shaft, and the end face of the ring may be provided with a lip that is in elastic contact with the housing.

Wherein, the ring is clung to the rotating shaft, axial sealing can be realized, and radial sealing can be realized by the elastic butt joint of the lip and the shell.

However, as the equipment ages and the seal ring wears, axial play of the rotating shaft becomes large, and the lip separates from the housing, resulting in seal failure.

Disclosure of Invention

The present invention has been made to solve at least one of the problems occurring in the prior art, and an object of the present invention is to provide a seal ring and a sealing device, which can improve sealing performance and can cope with a situation in which axial play of a rotating shaft becomes large.

The invention is realized by the following technical scheme:

in a first aspect of the present invention, there is provided a seal ring, including: the shaft sleeve is sleeved on the rotating shaft, and the inner surface of the shaft sleeve is provided with a first ring part which is elastically abutted against the rotating shaft; the ring cover is integrally connected with the end part of the shaft sleeve, and the end surface back to the shaft sleeve is provided with a second ring part which is elastically abutted against the shell.

According to the sealing ring and the sealing device in the first aspect of the present invention, the first ring portion is a sealing lip.

According to the sealing ring and the sealing device in the first aspect of the present invention, the first ring portion is located at one end of the shaft sleeve away from the ring cover.

According to the sealing ring and the sealing device in the first aspect of the present invention, the inner edge of the first ring portion is inclined toward the ring cover.

According to the sealing ring and the sealing device in the first aspect of the present invention, the number of the first ring portions is two.

According to the sealing ring and the sealing device in the first aspect of the present invention, the outer surface of the shaft sleeve is provided with the third ring portion.

According to the sealing ring and the sealing device in the first aspect of the invention, a fourth ring portion is arranged on one side of the ring cover close to the shaft sleeve.

According to the sealing ring and the sealing device in the first aspect of the invention, a conical ring is arranged at the joint of the shaft sleeve and the ring cover, and the shaft sleeve and the ring cover are connected through the conical ring.

In a second aspect, the present invention provides a sealing device comprising a sealing ring as described in any one of the above.

According to the sealing device of the second aspect of the present invention, the sealing device further includes a first limiting ring and a second limiting ring, the first limiting ring and the second limiting ring are sleeved on the rotating shaft, the first limiting ring is fixed with the rotating shaft, the second limiting ring is fixed with the housing, one end of the shaft sleeve, which is far away from the ring cover, is accommodated between the first limiting ring of the housing and the rotating shaft, and the outer edge of the ring cover is accommodated between the second limiting ring and the housing.

Has the advantages that: compared with the prior art, the sealing ring and the sealing device provided by the invention have the advantages that the shaft sleeve and the ring cover are integrally formed, so that the shaft sleeve is provided with the first ring part, and the ring cover is provided with the second ring part, therefore, the first ring part is used for realizing axial sealing, and the second ring part is used for realizing radial sealing.

Meanwhile, due to the arrangement of the first ring part and the second ring part, the contact area of the shaft sleeve and the rotating shaft is reduced, and the contact area of the ring cover and the shell is also reduced.

Therefore, when the rotating shaft has large axial movement, the rotating shaft slides with the shaft sleeve, the ring cover is prevented from being separated from the shell, and the radial sealing failure is avoided.

Therefore, when the rotating shaft has large radial run-out, the ring cover slides with the shell, so that the shaft sleeve can follow the rotating shaft, and the axial sealing failure is avoided.

Thus, when the rotating shaft has large axial float and radial run-out, the shaft sleeve axially slides relative to the rotating shaft, the ring cover radially slides relative to the housing, and both the axial seal and the radial seal are kept effective.

Drawings

The invention is further described below with reference to the accompanying drawings and examples;

fig. 1 is a schematic structural view of a sealing device of the present invention.

Reference numerals: 100-shaft sleeve, 110-first ring part, 120-ring cover, 130-second ring part, 140-third ring part, 150-fourth ring part, 160-conical ring, 170-first spacing ring and 180-second spacing ring.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.