CN213899870U

CN213899870U - Dustproof oil seal

Info

Publication number: CN213899870U
Application number: CN202023331227.4U
Authority: CN
Inventors: 王军
Original assignee: Chengdu Jinfuli Technology Co ltd
Current assignee: Chengdu Jinfuli Technology Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-08-06
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a dustproof oil blanket is provided with main lip, outer lip, all the cladding has the seal cover on main lip and the outer lip, the seal cover has the resilience, be compression state when seal cover surface and axle contact. The sealing performance of the dustproof oil seal is enhanced by sleeving the main lip and the outer lip with the sealing sleeves with resilience; the groove is formed in the side where the main lip is located, so that liquid is extruded to the main lip and the outer lip when entering the groove, the sealing sleeve is in closer contact with the shaft, and the sealing performance of the dustproof oil seal is further guaranteed; through being provided with the arch at the surface of main part, after the dustproof oil blanket installation, the protruding position is compressed, and then extrudees main lip and outer lip, guarantees the leakproofness of dustproof oil blanket.

Description

Dustproof oil seal

Technical Field

The utility model relates to an oil blanket technical field especially relates to a dustproof oil blanket.

Background

The sealing member prevents leakage of fluid or solid particles from between adjacent bonding surfaces and prevents intrusion of foreign substances such as dust and moisture into the materials or parts of the parts inside the machine equipment. At present, a dustproof oil seal is similar to a Y-shaped sealing ring, the dustproof oil seal is attached to a coupling surface of a sealing pair by virtue of an opened lip edge, when no internal pressure exists, very small contact pressure is generated due to deformation of the lip tip, under the sealing condition, normal pressure equal to medium pressure is applied to each point in contact with a sealing medium, the sealing performance is good, but in a special occasion, namely when two ends of the dustproof oil seal need good sealing effect, the sealing effect of the sealing element is relatively poor.

SUMMERY OF THE UTILITY MODEL

To the technical problem that above-mentioned provided, the utility model provides a dustproof oil blanket has solved the relatively poor problem of leakproofness of dustproof oil blanket among the prior art.

The technical means of the scheme is as follows:

a dust seal comprising: the seal comprises a main lip and an outer lip, wherein the main lip and the outer lip are both coated with a seal sleeve, the seal sleeve has rebound resilience, and the outer surface of the seal sleeve is in a compression state when in contact with a shaft.

In the prior art, the main lip and the outer lip are directly contacted with the shaft, and when the two ends of the main lip and the outer lip need good sealing effect, the sealing effect of the existing oil seal cannot meet the requirement; this scheme is in the cladding has the seal cover on main lip and the outer lip, and the internal diameter of oil blanket reduces, when establishing epaxial with the oil blanket cover, because the seal cover has certain resilience, can realize inseparabler contact between the surface of consequently seal cover on the oil blanket and axle, has guaranteed to realize better sealing performance.

Further, the sealing sleeve is of a sheet-shaped annular structure.

The surface of the whole circle of main lip of gland cladding and outer lip when the gland is the slice, can set up the gland structure into detachable structure, removable when the wearing and tearing condition appears in the gland, perhaps appear when the better actual conditions of leakproofness requirement, can change its resilience, adopt more suitable gland material.

Further, the sealing sleeve arranged on the main lip is a second sealing sleeve, the outer lip is a first sealing sleeve, and a dustproof protrusion used for blocking impurities is arranged on the first sealing sleeve.

The dustproof bulge is arranged on the first sealing sleeve outside the outer lip so as to prevent external impurities from entering the oil seal; dustproof protruding setting up to many circles, can better promote dirt-proof effect.

Further, the dustproof protrusion is arranged in a ring shape along the circumference of the first sealing sleeve.

Can conveniently process, and can prevent dust to whole circle oil blanket.

Further, still include the main part, the annular groove has been seted up along the circumference on the main part, the recess is located main lip place one side.

The annular groove is arranged, when liquid enters the groove, the main lip is squeezed, the main lip can be better attached to a shaft in the central hole, and a better sealing effect is achieved.

Further, the outer surface of the main body, which can be matched with the piston, is provided with a convex surface, and the convex surface is positioned on one side of the groove.

The convex surface is arranged on the outer surface, and when the bulge is extruded, the main lip and the outer lip of the oil seal are extruded, so that a better sealing effect is achieved.

Furthermore, an oil drainage hole is formed in the main lip.

The oil drain hole is arranged to ensure that no high temperature is generated between the main lip and the outer lip, and the lip opening is protected.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

1) the sealing performance of the dust-proof oil seal is enhanced by sleeving the main lip and the outer lip with a sealing sleeve with resilience.

2) Through set up the recess in main lip place side, to main lip and outer lip extrude when making liquid enter into the recess, make the seal cover inseparabler with the contact of axle, further guaranteed the leakproofness of dustproof oil blanket.

2) Through being provided with the arch at the surface of main part, after the dustproof oil blanket installation, the protruding position is compressed, and then extrudees main lip and outer lip, guarantees the leakproofness of dustproof oil blanket.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic cross-sectional view of the structure of the present invention;

the reference numbers in the figures are respectively 1-groove; 2-convex surface; 3, dust-proof protrusions; 4-main lip; 5-outer lip; 6-a first sealing sleeve; 7-second sealing sleeve.

Detailed Description

The dust-proof oil seal of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1:

as shown in fig. 1, a dust-proof oil seal includes: main lip 4, outer lip 5, all the cladding has the seal cover on main lip 4 and the outer lip 5, the seal cover has the resilience, be compression state when seal cover surface and axle contact.

In the prior art, the main lip 4 and the outer lip 5 are directly contacted with a shaft, and when the two ends of the main lip and the outer lip both need good sealing effect, the sealing effect of the existing oil seal cannot meet the requirement; this scheme is in the cladding has the seal cover on main lip 4 and the outer lip 5, and the internal diameter of oil blanket reduces, and when establishing epaxial with the oil blanket cover, because the seal cover has certain resilience, can realize inseparabler contact between the surface of consequently seal cover on the oil blanket and axle, has guaranteed to realize better sealing performance.

Example 2:

example 2 is a further limitation made on example 1, as shown in figure 1:

the sealing sleeve is of a flaky annular structure; the sealing sleeve arranged on the main lip 4 is a second sealing sleeve 7, the sealing sleeve arranged on the outer lip 5 is a first sealing sleeve 6, and the first sealing sleeve 6 is provided with a dustproof bulge 3 for blocking impurities; the dustproof bulge 3 is arranged in a ring shape along the circumference of the first sealing sleeve 6; the novel toothbrush also comprises a main body, wherein an annular groove 1 is formed in the main body along the circumference, and the groove 1 is positioned on one side of the main lip 4; the outer surface of the main body, which can be matched with the piston, is provided with a convex surface 2, and the convex surface 2 is positioned on one side of the groove 1; and an oil drainage hole is formed in the main lip 4.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A dust seal comprising: the main lip (4), outer lip (5), its characterized in that, all the cladding has the seal cover on main lip (4) and outer lip (5), the seal cover has the resilience, be compression state when seal cover surface and axle contact.

2. A dust and oil seal as defined in claim 1, wherein the sealing sleeve is a sheet-like annular structure.

3. A dust-proof oil seal according to claim 2, characterized in that the sealing sleeve arranged on the main lip (4) is a second sealing sleeve (7), the sealing sleeve arranged on the outer lip (5) is a first sealing sleeve (6), and the first sealing sleeve (6) is provided with a dust-proof protrusion (3) for blocking impurities.

4. A dust and oil seal as claimed in claim 3, wherein the dust protection boot (3) is arranged in a ring around the circumference of the first sealing boot (6).

5. The dustproof oil seal according to claim 1 or 4, further comprising a main body, wherein an annular groove (1) is formed in the main body along the circumference, and the groove (1) is located on the side where the main lip (4) is located.

6. A dust and oil seal as claimed in claim 5, wherein the outer surface of the body which is engageable with the piston is provided with a convex surface (2), the convex surface (2) being located on the side of the recess (1).

7. A dust and oil seal as claimed in claim 1 or 6, characterised in that the main lip (4) is provided with an oil drainage hole.