CN215634972U

CN215634972U - Novel oil seal

Info

Publication number: CN215634972U
Application number: CN202120944959.6U
Authority: CN
Inventors: 蒋立俏; 曾庆星; 殷浩东; 雷雄波; 张小锋; 刘萍萍
Original assignee: Xuzhou XCMG Drivetrain Co Ltd
Current assignee: Xuzhou XCMG Drivetrain Co Ltd
Priority date: 2021-05-06
Filing date: 2021-05-06
Publication date: 2022-01-25
Anticipated expiration: 2031-05-06

Abstract

The utility model discloses a novel oil seal which comprises a main oil seal, wherein two groups of auxiliary oil seals are arranged in the main oil seal, a support ring is arranged between the two groups of auxiliary oil seals, the main oil seal and the auxiliary oil seals are double-layer framework connecting rubber layers, an outer sealing lip is arranged at the end part of a rubber layer of the main oil seal, two inner sealing lips are arranged on the rubber layer of each group of auxiliary oil seals, and a plurality of oil grooves are symmetrically and uniformly distributed in an inner hole of the support ring along the axial direction. The novel oil seal is of an assembled structure and is simple in structure; the framework is combined with the rubber, so that the requirement on the precision of parts is met, the follow-up property and the compensation property of the oil seal are improved, the wear resistance of the lip is good, and the sealing degree is high; the arrangement of multiple oil seals and lips can realize multi-stage sealing of the stepped rotating shaft; the oil liquid in the seal is leaked out, the external dust particles are prevented from being invaded, and the normal operation of the mechanical device is ensured.

Description

Novel oil seal

Technical Field

The utility model relates to a novel oil seal, and belongs to the technical field of mechanical sealing elements.

Background

It is known that a sealing is required between two parts of a mechanical device which rotate relative to each other to ensure that lubricating oil inside the mechanical device does not leak out, external dust particles cannot invade the inside of the mechanical device, and the mechanical device can normally operate. The existing measure is to install a framework oil seal between two parts of a mechanical device which rotate relatively. However, the existing framework oil seal structure has high requirements on the precision of related parts, the oil seal has poor follow-up property and compensation property, a lip of the framework oil seal is easy to wear, lubricating oil in the mechanical device leaks out, and external dust particles invade into the mechanical device, so that the normal operation of the mechanical device cannot be well ensured.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, and provides a novel oil seal, which solves the problems that a framework oil seal is easy to wear, the follow-up property and the compensation property of the oil seal are poor, lubricating oil in a mechanical device leaks out, and external dust particles invade the mechanical device to influence the normal operation of the mechanical device.

In order to achieve the purpose, the utility model is realized by adopting the following technical scheme:

the utility model provides a novel oil seal, includes main oil blanket, set up two sets of vice oil blanket in the main oil blanket, be equipped with the support ring between two sets of vice oil blanket, main oil blanket and vice oil blanket are double-deck skeleton connection rubber layer, the rubber layer tip of main oil blanket is equipped with the external seal lip, is equipped with two internal seal lips on the rubber layer of the vice oil blanket of every group, a plurality of oil grooves of axial direction symmetry equipartition are followed to the support ring hole.

Preferably, the main oil seal comprises an outer support framework, an inner support framework and a main rubber layer which connects the outer support framework and the inner support framework into a whole. The end part of the main rubber layer is provided with an outer sealing lip, and a bulge is arranged on the shoulder part close to the outer sealing lip, so that the thickness of the lip is increased, the holding force of the sealing lip is enhanced, and the sealing effect is enhanced.

Preferably, the auxiliary oil seal comprises an outer framework, an inner framework and an auxiliary rubber layer which is connected with the outer framework into a whole. One end of the auxiliary rubber layer, which is far away from the outer framework and the inner framework, is provided with a main inner sealing lip and an auxiliary inner sealing lip to form multi-stage sealing.

Further preferably, the main inner sealing lip is provided with a fixed ring groove facing the inner skeleton, and a spring is assembled in the fixed ring groove, so that the sealing effect of the lip is improved.

Preferably, the oil groove arranged in the support ring is a triangular oil groove. Four oil grooves are arranged in the support ring. The support ring plays the auxiliary stay effect, and triangle-shaped oil groove can restrict logical oil mass, can guarantee that vice oil blanket lip department forms the oil film, can reduce again because of leading to the big increase oil leak risk of oil mass.

Compared with the prior art, the utility model has the following beneficial effects:

the novel oil seal is of an assembled structure and is simple in structure; the framework is combined with the rubber, so that the requirement on the precision of parts is met, the follow-up property and the compensation property of the oil seal are improved, the wear resistance of the lip is good, and the sealing degree is high; the arrangement of multiple oil seals and lips can realize multi-stage sealing of the stepped rotating shaft; the oil liquid in the seal is leaked out, the external dust particles are prevented from being invaded, and the normal operation of the mechanical device is ensured.

Drawings

Fig. 1 is a schematic sectional structure diagram of a novel oil seal according to an embodiment of the utility model.

Fig. 2 is a schematic sectional structure view of a main oil seal in the novel oil seal according to the embodiment.

Fig. 3 is a schematic sectional structure view of a secondary oil seal in the novel oil seal according to the embodiment.

FIG. 4 is a schematic cross-sectional view of a support ring in the novel oil seal according to the embodiment.

Fig. 5 is a schematic sectional structure diagram in practical application of the novel oil seal according to the embodiment.

In the figure: 1-main oil seal, 11-outer support framework, 12-main rubber layer, 13-inner support framework, 14-outer seal lip and 15-bulge; 2-auxiliary oil seal, 21-outer frame, 22-inner frame, 23-auxiliary rubber layer, 24-main inner sealing lip, 25-auxiliary inner sealing lip, 26-spring, 3-support ring, 31-oil groove; 4-seat cavity, 5-novel oil seal and 6-rotary stepped shaft.

Detailed Description

The utility model is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Example 1

As shown in fig. 1 and fig. 4, a novel oil seal includes a main oil seal 1, set up two sets of vice oil blanket 2 in the main oil blanket 1, be equipped with support ring 3 between two sets of vice oil blanket 2, main oil blanket 1 and vice oil blanket 2 are double-deck skeleton connection rubber layer, the rubber layer tip of main oil blanket 1 is equipped with external seal lip 14, is equipped with two internal seal lips on the rubber layer of the vice oil blanket 2 of every group, 4 triangle-shaped oil grooves 31 of axial direction symmetry equipartition are followed to 3 holes of support ring, can restrict the oil mass that leads to, can guarantee vice oil blanket lip department and form the oil film, can reduce again because of the oil mass that leads to the big increase oil leak risk.

The main oil seal 1 of the present embodiment includes an outer support frame 11, an inner support frame 13, and a main rubber layer 12 connecting the outer support frame 11 and the inner support frame 13 into a whole. The auxiliary oil seal 2 comprises an outer framework 21, an inner framework 22 and an auxiliary rubber layer 23 which is connected with the outer framework 21 into a whole.

Example 2

In this embodiment, a further improvement is made on the basis of embodiment 1, as shown in fig. 2, the outer sealing lip 14 is disposed at an end portion of the main rubber layer 12, and a protrusion 15 is disposed on a shoulder portion close to the outer sealing lip 14, so that the lip thickness is increased, the holding force of the sealing lip is enhanced, and the sealing effect is enhanced.

As shown in fig. 3, in the embodiment, one end of the secondary rubber layer 23 away from the outer frame 21 and the inner frame 22 is provided with a main inner sealing lip 24 and a secondary inner sealing lip 25, so as to form a multi-stage seal. The main inner sealing lip 24 is provided with a fixed ring groove facing the inner framework 22, and a spring 26 is assembled in the fixed ring groove, so that the sealing effect of the lip is improved.

Fig. 5 is a schematic diagram of a practical structure of the novel oil seal according to this embodiment. Novel oil blanket 5 assembles in 4 holes in the seat chamber, and novel oil blanket 5 and 4 stills in seat chamber, and rotary stepped shaft 6 is rotary motion for novel oil blanket 5 and seat chamber 4. The outer sealing lip 14, the main inner sealing lip 24 and the auxiliary inner sealing lip 25 of the novel oil seal 5 are respectively in surface contact with the rotary stepped shaft 6 to realize multi-point sealing.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a novel oil seal, a serial communication port, including main oil blanket (1), set up two sets of vice oil blanket (2) in main oil blanket (1), be equipped with support ring (3) between two sets of vice oil blanket (2), main oil blanket (1) and vice oil blanket (2) are double-deck skeleton connection rubber layer, the rubber layer tip of main oil blanket (1) is equipped with external seal lip (14), is equipped with two internal seal lips on the rubber layer of the vice oil blanket of every group (2), a plurality of oil grooves (31) of axial direction symmetry equipartition are followed to support ring (3) hole.

2. The novel oil seal according to claim 1, characterized in that the main oil seal (1) comprises an outer support framework (11), an inner support framework (13) and a main rubber layer (12) which connects the outer support framework (11) and the inner support framework (13) into a whole.

3. The new oil seal as claimed in claim 2, characterized in that the end of the primary rubber layer (12) is provided with an external sealing lip (14), and a shoulder portion adjacent to the external sealing lip (14) is provided with a bulge (15).

4. The new oil seal according to claim 1, characterized in that the secondary oil seal (2) comprises an outer frame (21), an inner frame (22) and a secondary rubber layer (23) integrally connected with the outer frame (21).

5. A new oil seal according to claim 4, characterized in that one end of the secondary rubber layer (23) far away from the outer skeleton (21) and the inner skeleton (22) is provided with a main inner sealing lip (24) and a secondary inner sealing lip (25).

6. A new oil seal according to claim 5, characterized in that the main inner sealing lip (24) is provided with a fixing ring groove facing the direction of the inner frame (22), and the fixing ring groove is internally provided with a spring (26).

7. A new oil seal according to claim 1, characterized in that the oil groove (31) provided in the support ring (3) is a triangular oil groove.

8. A new oil seal according to claim 1, characterized in that four oil grooves (31) are provided in the support ring (3).