CN212028524U - Sealing ring with oil return hole - Google Patents
Sealing ring with oil return hole Download PDFInfo
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- CN212028524U CN212028524U CN202020016187.5U CN202020016187U CN212028524U CN 212028524 U CN212028524 U CN 212028524U CN 202020016187 U CN202020016187 U CN 202020016187U CN 212028524 U CN212028524 U CN 212028524U
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- oil return
- sealing
- return hole
- main body
- rubber main
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Abstract
The utility model discloses a sealing ring with an oil return hole, which comprises a rubber main body, a supporting framework and a sealing lip; the rubber main body is annular, and the support framework comprises two opposite clamping concave rings and is arranged in the rubber main body; the four sealing lips are respectively fixed at four corners inside the hollow supporting framework formed by the two concave rings; two adjacent four sealing lips are mutually abutted; and an oil return hole is formed in the rubber main body at the position opposite to the joint of the two concave rings. The utility model discloses an adjacent two mutual butts of four seal lips and be equipped with the oil gallery with two concave type ring junction relative positions in the rubber subject, can effectual its to the sealing washer oil backflow, improve sealed effect to can be applicable to the two-way rotatory operating mode, can play effectual sealed effect.
Description
Technical Field
The utility model relates to a mechanical seal technical field especially relates to a take sealing washer of oil gallery.
Background
Mechanical seal (mechanical seal) refers to a device for preventing fluid leakage, which is composed of at least one pair of end faces perpendicular to the rotation axis, and the end faces are kept in fit and relatively slide under the action of fluid pressure and the elastic force (or magnetic force) of a compensation mechanism and the cooperation of an auxiliary seal. With the development of modern mechanical industry, people have stricter sealing requirements, and the sealing ring filled with polytetrafluoroethylene gradually replaces the traditional rubber lip-shaped sealing ring due to the excellent qualities of weather resistance, friction resistance, corrosion resistance, high bounce resistance, eccentricity resistance and high linear speed. However, the lip of the existing sealing lip has no oil return hole or oil line, when the sealing lip is used for a bidirectional rotating shaft, the sealing life is short, and experiments show that leakage occurs after the sealing lip is used for 100 hours. And the existing shaft is only suitable for unidirectional rotation of the shaft relative to the seat hole, is limited to clockwise or anticlockwise rotation, and cannot adapt to the working condition of bidirectional rotation.
Therefore, the problem that the sealing ring with the oil return hole, which has the advantages of simple structure, aging resistance, good structural performance and good oil return effect, can improve the sealing performance of the sealing ring and is suitable for the bidirectional rotation working condition, needs to be solved by the technical personnel in the field is provided.
Disclosure of Invention
In view of this, the utility model provides a simple structure, ageing-resistant, structural performance is good, and the oil return is effectual, can improve sealing washer sealing performance and be applicable to the sealing washer of two-way rotatory operating mode's area oil return hole.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a sealing ring with an oil return hole comprises a rubber main body, a supporting framework and a sealing lip;
the rubber main body is annular, and the support framework comprises two opposite clamping concave rings and is arranged in the rubber main body;
the four sealing lips are respectively fixed at four corners inside the hollow supporting framework formed by the two concave rings; two adjacent four sealing lips are mutually abutted;
and an oil return hole is formed in the rubber main body at the position opposite to the joint of the two concave rings.
The utility model discloses a four adjacent two mutual butts of seal lip and with two in the rubber subject concave type ring junction relative position is equipped with the oil gallery, can effectual its to the sealing washer backward flow oil, improves sealed effect to can be applicable to the two-way rotatory operating mode, can play effectual sealed effect.
Furthermore, polytetrafluoroethylene sheets are filled among the four sealing lips, and the thickness of each polytetrafluoroethylene sheet is 0.05mm-1.0 mm.
Adopt above-mentioned technical scheme, the utility model discloses a rubber subject combines together with the polytetrafluoroethylene thin slice, and the moist trade performance that can full play polytetrafluoroethylene thin slice and beneficial properties such as wear-resisting, heat-resisting, ageing-resistant, acid and alkali-resistance can have again the resistant oily and elastic sealing performance who has rubber subject, have improved the basic performance of sealing washer, extension sealing washer life.
Furthermore, the diameter of the oil return hole is 0.05mm-1.5 mm.
Furthermore, the sealing lip is also provided with an oil return line, and the oil return line is arranged along the arc shape of the outer surface of the sealing lip.
Adopt above-mentioned technical scheme, the utility model discloses all set up back oil line on four lips, when the axle is rotatory, there are two kinds of flow directions by sealed, through sealed the pad to the atmosphere side promptly, on the other hand passes through oil gallery, seal lip inboard, and how when the axle is rotatory, the seal lip that two liang of relative settings is no matter how, and the homoenergetic makes, and internal flow more than or equal to lets out leakage quantity, and then realizes sealing.
Furthermore, the depth of the oil return line is 0.01mm-0.5 mm.
Further, the joint of the two concave rings is arranged in a step shape.
Adopt above-mentioned technical scheme, the utility model discloses a concave ring junction becomes step form setting and can enough guarantees when the installation and prevent the dislocation, can slow down the oil leak through step form setting again.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the sealing ring with an oil return hole of the present invention;
FIG. 2 is a schematic cross-sectional view of the seal ring with an oil return hole according to the present invention;
FIG. 3 is an enlarged schematic view of the sealing lip of the sealing ring with the oil return hole according to the present invention;
in the figure: 1 is a rubber main body; 2 is a supporting framework; 3 is a sealing lip; 31 is an oil return line; and 4, an oil return hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-3: the embodiment provides a sealing ring with an oil return hole, which comprises a rubber main body 1, a supporting framework 2 and a sealing lip 3;
the rubber main body 1 is annular, and the support framework 2 comprises two opposite clamping concave rings and is arranged inside the rubber main body 1;
the four sealing lips 3 are respectively fixed at four corners inside the hollow supporting framework 2 formed by the two concave rings; two adjacent four sealing lips 3 are mutually abutted;
an oil return hole 4 is arranged at the position opposite to the joint of the two concave rings on the rubber main body 1.
The utility model discloses a four 3 adjacent two mutual butts of seal lip are and be equipped with oil gallery 4 with two concave type ring junction relative positions in rubber subject 1, can effectual it to the sealing washer oil reflux, improve sealed effect to can be applicable to the two-way rotatory operating mode, can play effectual sealed effect.
In this embodiment, the polytetrafluoroethylene sheet is filled between the four sealing lips 3, and the thickness of the polytetrafluoroethylene sheet is 0.05mm to 1.0 mm.
In the embodiment, the rubber main body 1 is combined with the polytetrafluoroethylene sheet, so that the moistening and exchange performance and the wear-resisting, heat-resisting, aging-resisting, acid-alkali-resisting and other beneficial performances of the polytetrafluoroethylene sheet can be fully exerted, the oil-resisting and elastic sealing performance of the rubber main body 1 can be realized, the basic performance of the sealing ring is improved, and the service life of the sealing ring is prolonged.
In this embodiment, the number of the oil return holes 4 is 4.
In this embodiment, the diameter of the oil return hole 4 is 0.05mm-1.5 mm.
In this embodiment, the seal lip 3 is further provided with an oil return line 31, and the oil return line 31 is arranged along the arc shape of the outer surface of the seal lip 3.
In the embodiment, the oil return lines are formed in the four sealing lips 31, when the shaft rotates, two kinds of flow directions exist in a sealed mode, namely the sealing gasket faces the atmosphere side, on the other hand, the sealing lips face the inner side through the oil return holes, the sealing lips face the inner side, the sealing lips 3 arranged in pairs in an opposite mode can enable the internal flow rate to be larger than or equal to the leakage rate no matter how the shaft rotates, and sealing is achieved.
In this embodiment, the depth of the oil return line 31 is 0.01mm-0.5 mm.
In this embodiment, the junction of the two female rings is stepped.
The concave ring joint is arranged in a step shape in the embodiment, so that dislocation can be prevented during installation, and oil leakage can be slowed down through the step-shaped arrangement.
The embodiment has the following advantages: simple structure, long service life, structural performance is good, and the oil return is effectual, can improve sealing washer sealing performance and be applicable to the two-way rotatory operating mode.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A sealing ring with an oil return hole is characterized by comprising a rubber main body (1), a supporting framework (2) and a sealing lip (3);
the rubber main body (1) is annular, and the support framework (2) comprises two opposite clamping concave rings and is arranged in the rubber main body (1);
the four sealing lips (3) are respectively fixed at four corners inside the hollow supporting framework (2) formed by the two concave rings; two adjacent four sealing lips (3) are mutually abutted;
and an oil return hole (4) is formed in the rubber main body (1) at a position opposite to the joint of the two concave rings.
2. The seal ring with the oil return hole is characterized in that polytetrafluoroethylene sheets are filled among the four seal lips (3), and the thickness of the polytetrafluoroethylene sheets is 0.05mm-1.0 mm.
3. The seal ring with the oil return hole according to claim 1, wherein the diameter of the oil return hole is 0.05mm-1.5 mm.
4. The seal ring with the oil return hole according to claim 1, wherein the seal lip (3) is further provided with an oil return line (31), and the oil return line (31) is arranged along an arc shape of the outer surface of the seal lip (3).
5. The seal ring with the oil return hole according to claim 4, wherein the depth of the oil return line (31) is 0.01mm-0.5 mm.
6. The seal ring with the oil return hole according to any one of claims 1 to 5, wherein the junction of the two concave rings is stepped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020016187.5U CN212028524U (en) | 2020-01-02 | 2020-01-02 | Sealing ring with oil return hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020016187.5U CN212028524U (en) | 2020-01-02 | 2020-01-02 | Sealing ring with oil return hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212028524U true CN212028524U (en) | 2020-11-27 |
Family
ID=73486478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020016187.5U Active CN212028524U (en) | 2020-01-02 | 2020-01-02 | Sealing ring with oil return hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212028524U (en) |
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2020
- 2020-01-02 CN CN202020016187.5U patent/CN212028524U/en active Active
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