CN203796957U - Rotary shaft seal structure - Google Patents
Rotary shaft seal structure Download PDFInfo
- Publication number
- CN203796957U CN203796957U CN201420140481.1U CN201420140481U CN203796957U CN 203796957 U CN203796957 U CN 203796957U CN 201420140481 U CN201420140481 U CN 201420140481U CN 203796957 U CN203796957 U CN 203796957U
- Authority
- CN
- China
- Prior art keywords
- shell
- rotary shaft
- ring
- outer shell
- spring
- 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.)
- Expired - Fee Related
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- Sealing With Elastic Sealing Lips (AREA)
- Sealing Devices (AREA)
Abstract
The utility model relates to a rotary shaft seal structure comprising a graphite ring, an outer shell, a rubber ring and a spring. The outer shell is located between a rotary shaft and a shell, the cross section of the outer shell is a U-shaped circle, and the opening direction is the one of large lubrication oil pressure, and the outer shell is assembled to the shell in a matching manner; the graphite ring is mounted in the outer shell, one end extends out of the opening of the outer shell and contacts with a movable ring of the rotary shaft, the other end is pressed in the shell through the spring, and the movable ring is mounted on the rotary ring and is capable of rotating with the rotary shaft synchronously. The rotary shaft seal structure is compact in structure and has fine seal effect, owing to the self lubricating function of graphite material and compensation effect of the spring, the seal effect is fine when the linear speed is high, the leakage rate of the lubrication oil at the end of the rotary shaft is reduced effectively, and seal reliability is improved.
Description
Technical field
The utility model relates to a kind of sealing configuration, especially a kind of rotation axis seal structure.
Background technique
The sealing configuration of rotation axle head adopts lip seal mode more, as shown in Figure 1, lip seal rubber ring 12 and housing 13 interference fit, rubber ring internal diameter and running shaft 11 are adjacent to.When work, rubber ring and running shaft generation relative movement are also played seal action.Be subject to sealing rubber ring main material to allow the restriction of friction linear velocity, general lip seal can only be used for the situation that linear velocity is low, and when linear velocity is high, leak-down rate is larger, cannot be used for the high situation of leakage rate control requirement.
Summary of the invention
The purpose of this utility model is a kind of rotation axis seal structure of design, realizes on-line velocity good sealing effect when high, can effectively reduce the larger situation of rotation axle head lubrication leakage rate, and improve sealing reliability.
Technological scheme of the present invention is, described rotation axis seal structure comprises graphite annulus, shell, cushion rubber, spring, and shell, between running shaft and housing, is the annulus that cross section takes the shape of the letter U, and opening direction is the direction that lubricating oil pressure is large and coordinates installation with housing; Graphite annulus is installed in the enclosure, and one end is stretched out and contacts with the rotating ring running shaft from the opening of shell, and the other end is pressed in housing by spring, described rotating ring be arranged on running shaft and can with running shaft synchronous rotary; Between described shell and housing, be provided with ring apron, between enclosure and graphite annulus, be provided with ring apron.
The utility model adopts graphite material to seal, graphite annulus has frictional force little, the feature that self-lubricating property is good, the friction linear velocity allowing is high, through coordinating after rotating ring break-in closely, good sealing effect, the thrust of spring can compensate the wearing and tearing of graphite annulus long-term work simultaneously, has improved the reliability and stability of graphite grazing.Meanwhile, the cushion rubber between graphite annulus and shell forms the 1st road sealing, and the cushion rubber between shell and housing forms the 2nd road sealing.In the time of running shaft high speed rotating, rotating ring rotates with running shaft, coordinates form the 3rd road motive sealing with the graphite annulus of graphite grazing.The utility model compact structure, good sealing effect, the self-lubricating function of graphite material and the compensating action of spring, realized on-line velocity good sealing effect when high, and effectively reduced the larger situation of rotation axle head lubrication leakage rate, and improved sealing reliability.
Brief description of the drawings
Fig. 1 is lip seal schematic diagram
Fig. 2 is graphite grazing structural representation.
Embodiment
As shown in the figure, rotation axis seal structure comprises graphite annulus 4, shell 5, cushion rubber 6, spring 7, and shell 5, between running shaft 1 and housing 8, is the annulus that cross section takes the shape of the letter U, and opening direction is the direction that lubricating oil pressure is large and coordinates installation with housing 8; Graphite annulus 4 is arranged in shell 5, and one end is stretched out and contacts with the rotating ring 2 running shaft from the opening of shell 5, and the other end is pressed in housing 5 by spring, described rotating ring 2 be arranged on running shaft and can with running shaft synchronous rotary; Between described shell 5 and housing 8, be provided with ring apron 3, between shell 5 inside and graphite annulus 4, be provided with ring apron 6.
Claims (2)
1. a rotation axis seal structure, it is characterized in that, described rotation axis seal structure comprises graphite annulus (4), shell (5), cushion rubber (6), spring (7), shell (5) is positioned between running shaft (1) and housing (8), for the annulus that cross section takes the shape of the letter U, opening direction is the direction that lubricating oil pressure is large and coordinates installation with housing (8); Graphite annulus (4) is arranged in shell (5), one end is stretched out and contacts with the rotating ring (2) running shaft from the opening of shell (5), the other end is pressed in housing (5) by spring, described rotating ring (2) be arranged on running shaft and can with running shaft synchronous rotary.
2. a kind of rotation axis seal structure as claimed in claim 1, is characterized in that, between described shell (5) and housing (8), is provided with ring apron (3), between shell (5) inside and graphite annulus (4), is provided with ring apron (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420140481.1U CN203796957U (en) | 2014-03-26 | 2014-03-26 | Rotary shaft seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420140481.1U CN203796957U (en) | 2014-03-26 | 2014-03-26 | Rotary shaft seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203796957U true CN203796957U (en) | 2014-08-27 |
Family
ID=51379169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420140481.1U Expired - Fee Related CN203796957U (en) | 2014-03-26 | 2014-03-26 | Rotary shaft seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203796957U (en) |
-
2014
- 2014-03-26 CN CN201420140481.1U patent/CN203796957U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20200326 |