CN111271460A - Y-shaped oil seal - Google Patents
Y-shaped oil seal Download PDFInfo
- Publication number
- CN111271460A CN111271460A CN201811474931.XA CN201811474931A CN111271460A CN 111271460 A CN111271460 A CN 111271460A CN 201811474931 A CN201811474931 A CN 201811474931A CN 111271460 A CN111271460 A CN 111271460A
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- CN
- China
- Prior art keywords
- oil seal
- annular
- oil
- end surface
- cross
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
Abstract
The invention provides a Y-shaped oil seal, which comprises a flexible annular oil seal body (1), wherein the oil seal body is provided with an annular upper end surface (11) and a lower end surface opposite to the upper end surface (11), an annular groove (12) is formed in the lower end surface, an inner lip (13) is arranged on the inner side of the annular groove (12) in the lower end surface, an outer lip (14) is arranged on the outer side of the annular groove (12) in the lower end surface, and the cross section of the oil seal body is Y-shaped, and the Y-shaped oil seal is characterized in that: the inner side of the oil seal body, which is close to the upper end face, is provided with an annular protruding ring (2), and the cross section of the protruding ring (2) is triangular. The Y-shaped oil seal has the advantages of simple structure and good sealing effect, and can ensure that the phenomenon of oil leakage or oil leakage does not occur at the sealing position in a static state when the field environment and the temperature are severe.
Description
Technical Field
The invention relates to the technical field of sealing devices, in particular to a Y-shaped oil seal.
Background
At present, special oil seals are needed to be used for sealing hydraulic oil in an oil cylinder on parts which work in a reciprocating or rotating mode, Y-shaped oil seals are commonly used for hydraulic oil cylinders and have a one-way sealing effect, some effects of existing Y-shaped oil seals cannot meet the requirement of high sealing performance due to the reasons of environment, temperature and the like, and the situation that oil leaks from part of sealing positions can occur in a static state.
Disclosure of Invention
The invention aims to provide a sealing structure which is simple in structure and good in sealing performance, and the sealing position can not leak oil in a static state.
The technical scheme of the invention is as follows: the utility model provides a Y type oil blanket, includes flexible annular oil blanket body, and the oil blanket body has an annular up end to and the lower terminal surface relative with the up end, be provided with annular groove on the terminal surface down, annular groove's transversal V-arrangement of personally submitting, lower terminal surface annular groove's inboard is equipped with interior lip, and the outside of lower terminal surface annular groove is equipped with outer lip, oil blanket body cross-section is Y shape, the cylindrical inside wall that the oil blanket body is close to the up end is equipped with annular protruding circle, the cross section of protruding circle is triangle-shaped, and under the quiet encapsulated situation, elastic deformation takes place for the protruding circle, causes contact pressure on the sealing contact surface, and contact pressure is greater than by sealed medium's interior pressure, then does not take place to leak, otherwise then takes place to leak.
The triangle of the cross section of the convex ring is an equilateral triangle, and under a static sealing state, contact pressure is concentrated on the triangular tip of the convex ring which is in contact with the contact surface on the sealing contact surface.
The ratio of the inner diameter of the triangular central line of the cross section of the convex ring to the inner diameter of the upper end face side of the oil seal body is 1: 45-55.
The ratio of the distance from the convex ring to the upper end face to the height of the oil seal body in the direction from the upper end to the lower end of the oil seal body is 1-2: 10.
The invention has the advantages and positive effects that: by adopting the technical scheme, the Y-shaped oil seal has the advantages of simple structure and good sealing effect, and can ensure that the phenomenon of oil leakage or oil leakage does not occur at the sealing part in a static state when the field environment and the temperature are severe.
Drawings
FIG. 1 is a schematic structural view of a cross section of the present invention
FIG. 2 is a bottom view of the present invention
In the figure:
1. oil seal body 2, convex ring 11, upper end face
12. Annular groove 13, inner lip 14, outer lip
As shown in fig. 1-2, the Y-shaped oil seal of the present invention comprises a flexible annular oil seal body 1, the oil seal body has an annular upper end surface 11 and a lower end surface opposite to the upper end surface 11, the lower end surface is provided with an annular groove 12, the inner side of the annular groove 12 of the lower end surface is provided with an inner lip 13, the outer side of the annular groove 12 of the lower end surface is provided with an outer lip 14, the cross section of the oil seal body is Y-shaped, the inner side of the oil seal body close to the upper end surface is provided with an annular protruding ring 2, and the cross section of the protruding ring 2 is triangular.
The triangle of the cross section of the convex ring 2 is an equilateral triangle.
The ratio of the inner diameter of the triangular central line of the cross section of the convex ring 2 to the inner diameter of the upper end face 11 side of the oil seal body 1 is 1: 50.
The ratio of the distance from the convex ring 2 to the upper end surface 11 to the height of the oil seal body 1 is 3: 20.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (4)
1. The utility model provides a Y type oil blanket, includes flexible annular oil blanket body (1), and the oil blanket body has an annular up end (11) to and the lower terminal surface relative with up end (11), be provided with annular groove (12) down on the terminal surface, the inboard of lower terminal surface annular groove (12) is equipped with interior lip (13), and the outside of lower terminal surface annular groove (12) is equipped with outer lip (14), oil blanket body cross-section is Y shape, its characterized in that: the inner side of the oil seal body, which is close to the upper end face, is provided with an annular protruding ring (2), and the cross section of the protruding ring (2) is triangular.
2. A Y-shaped oil seal as defined in claim 1, wherein: the triangle of the cross section of the protruding ring (2) is an equilateral triangle.
3. A Y-shaped oil seal as defined in claim 2, wherein: the ratio of the inner diameter of the triangular central line of the cross section of the convex ring (2) to the inner diameter of the upper end face (11) side of the oil seal body (1) is 1: 45-55.
4. A Y-shaped oil seal as defined in claim 1, wherein: the height ratio of the distance from the convex ring (2) to the upper end face (11) to the oil seal body (1) is 1-2: 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811474931.XA CN111271460A (en) | 2018-12-04 | 2018-12-04 | Y-shaped oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811474931.XA CN111271460A (en) | 2018-12-04 | 2018-12-04 | Y-shaped oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111271460A true CN111271460A (en) | 2020-06-12 |
Family
ID=70994728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811474931.XA Pending CN111271460A (en) | 2018-12-04 | 2018-12-04 | Y-shaped oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111271460A (en) |
-
2018
- 2018-12-04 CN CN201811474931.XA patent/CN111271460A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200612 |