CN103574034A - Rotating shaft sealing member - Google Patents
Rotating shaft sealing member Download PDFInfo
- Publication number
- CN103574034A CN103574034A CN201310312363.4A CN201310312363A CN103574034A CN 103574034 A CN103574034 A CN 103574034A CN 201310312363 A CN201310312363 A CN 201310312363A CN 103574034 A CN103574034 A CN 103574034A
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- CN
- China
- Prior art keywords
- seal element
- seal
- rotating shaft
- circle
- sealing member
- 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.)
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Abstract
The invention refers to a rotating shaft sealing member. Provided is a rotating shaft sealing member which can respond with a same kind of rotating shaft sealing member for a rotating shaft performing two direction rotation (or either for right rotation or left rotation), and can greatly raise sealing performance. In a rotating shaft sealing member with a resin sealing element (4), the sealing element (4) is a circular sheet with an inner circle (6) and an outer circle (7) in a free state before assembly and forms a single or a plurality of independent circular grooves (8) eccentrically arranged relative to the outer circle (7) in a mode of encircling the inner circle (6).
Description
Technical field
The present invention relates to rotation shaft seal.
Background technique
All the time, in the pump of vacuum pump etc. or compressor etc., as the rotation shaft seal for its running shaft, possess as everyone knows resinous seal element, seal element has a plurality of concentric shape circular troughs (for example,, with reference to patent documentation 1).
When processing locked groove, produce a plurality of surface pressure peak values, and surface pressure peak value also becomes large.Thus, sealability improves, but cannot improve significantly.
In addition, also have the rotation shaft seal that spiral grooved is formed in to seal element, if processing spiral chute, during suction (pumping) effect that spiral chute causes makes especially to turn round, sealability improves sharp.But, because spiral chute has directivity, thereby can not be applicable to carry out the running shaft of bidirectional rotary.In addition, in the situation at the two ends of seal shaft or in the situation that the right rotations such as pump of sealing screw formula and 2 axles of anticlockwise must be used respectively Sealing and anticlockwise Sealing for right rotation.
Prior art document
Patent documentation
Patent documentation 1: Japanese kokai publication hei 10-267133 communique.
Summary of the invention
Needing the problem solving is to make sealability improve significantly.In addition, in the situation that be used in the running shaft that carries out bidirectional rotary, (in having spiral fluted seal element) must be used respectively Sealing and anticlockwise Sealing for right rotation.
Therefore, about rotation shaft seal involved in the present invention, in thering is the rotation shaft seal of resin seal element, under the free state of seal element before assembling, for having the annulus sheet of interior Zhou Yuan and periphery circle, the single and even a plurality of independent circular troughs that form in the mode around interior Zhou Yuan set prejudicially with respect to periphery is round.
In addition, make the interior Zhou Yuan of seal element eccentric with respect to the periphery circle of seal element.
In addition, in thering is the rotation shaft seal of resin seal element, under the free state of seal element before assembling, for thering is the annulus sheet of interior Zhou Yuan and periphery circle, make the interior Zhou Yuan of seal element eccentric with respect to the periphery circle of seal element.
According to rotation shaft seal of the present invention, in the situation that be used in the running shaft that carries out bidirectional rotary, also the rotation shaft seal of a kind of can usining deal with (as right rotation with and anticlockwise with in any one also can use), and, can make sealability improve significantly.Especially on-streamly can access good sealability.
Accompanying drawing explanation
Fig. 1 means the crucial portion sectional view of the 1st mode of execution of the present invention.
Fig. 2 means the planimetric map of the free state of seal element.
Fig. 3 is explanatory drawing.
Fig. 4 means the planimetric map of the seal element of the 2nd mode of execution.
Fig. 5 is explanatory drawing.
Fig. 6 means the planimetric map of the seal element of the 3rd mode of execution.
Fig. 7 means the crucial portion sectional view of the 4th mode of execution.
Fig. 8 means the planimetric map of the seal element of the 5th mode of execution.
Symbol description
4 seal elements;
6 interior Zhou Yuan;
7 periphery circles;
8 independent circular troughs.
Embodiment
Fig. 1, Fig. 2 represent the 1st mode of execution of the present invention.Rotation shaft seal of the present invention is for the running shaft such as the pumps such as vacuum pump or compressor etc.Especially, also can deal with the running shaft Y that carries out bidirectional rotary with identical rotation shaft seal.That is, can be for dual-purpose right rotation Sealing and anticlockwise Sealing.
At frame 2, rubber sealed member 3 processed is integrated by welding etc., and convex edge 2A is embedded in the inside of sealed member 3, and the outstanding lip 3a that is provided with sealed member 3.Resin seal element 4 is provided between convex edge 2A and inner housing 1 via a part for sealed member 3.Under the free state of seal element 4 before assembling, as shown in Figure 2, for thering is the annulus sheet of interior week round 6 and periphery circle 7.The single independent circular trough 8 forming in the mode around interior week round 6 sets prejudicially with respect to periphery round 7.That is, the central point X of independent circular trough 8
8central point X with periphery circle 7
7separating distance d only.In addition the central point X in interior week round 6,
6central point X with periphery circle 7
7unanimously.
Then,, in Fig. 3, effect is described.Conventionally, the pressure of sealed sides A is high, and the pressure of anti-sealed sides B is low.This pressure difference makes fluid-encapsulated to anti-sealed sides B leakage.On-stream, fluid-encapsulated (wet goods) under seal element 4 rotates along with running shaft Y, for example, if be positioned at the fluid of the position a of Fig. 3, along with the rotation of running shaft Y, moves to position b, and encounter eccentric independent circular trough 8, towards the direction pushing back to sealed sides A, flow.That is,, along independent circular trough 8, from position b, towards position c, be pushed back.On-stream, the bias of running shaft Y or deflection, vibration etc. make the fluid-encapsulated state in easy leakage, rotation at every turn, and fluid is pushed back to sealed sides A, by this, pushes back effect, thereby improves the sealability in running especially.The in the situation that of running shaft Y reverse rotation, towards the effect that pushes back of sealed sides A, work similarly.That is, in Fig. 3, if running shaft Y reverse rotation, at the paper private side shown in dotted line, works towards the effect that pushes back of sealed sides A.
Fig. 4, Fig. 5 represent the 2nd mode of execution.Make round 7 bias of interior week circle 6 peripheries with respect to seal element 4 of seal element 4.That is, the central point X in interior week round 6
6central point X with periphery circle 7
7separating distance d only.The central point X in interior week round 6
6central point X with independent circular trough 8
8unanimously.In other words, along same radial direction, hold identical offset and bias, interior week round 6 and independent circular trough 8 are concentric circles.Owing to equating circumferencial direction is whole from the interior week circle 6 distance Z to independent circular trough 8, thereby the arbitrary position that can make sealing force that independent circular trough 8 the produces Zhou Fangxiang on independent circular trough 8 also about equally.Other formation and the 1st mode of execution are same.
Fig. 6 represents the 3rd mode of execution.A plurality of (3) the independent circular trough 8 forming in the mode around interior week round 6 sets prejudicially with respect to periphery round 7.Each independent circular trough 8 is concentric circle with interior week round 6.Other formation and the 2nd mode of execution are same.
Fig. 7 represents the 4th mode of execution.Formation beyond seal element 4 is different from the mode of execution of Fig. 1.That is, omit rubber sealed member 3 processed, between inner housing 1 and frame 2, via pad 9, there is resinous seal element 4.
Then,, in Fig. 8, the 5th mode of execution is described.In thering is the rotation shaft seal of resin seal element 4, under the free state of seal element 4 before assembling, for thering is the annulus sheet of interior week circle 6 and periphery circle 7, make interior week circle 6 circles of the peripheries with respect to seal element 47 eccentric distance d only of seal element 4.That is, as shown in Figure 8, the central point X in interior week round 6
6central point X with periphery circle 7
7separating distance d only.Do not possess independent circular trough 8.By the rotation of running shaft Y, thus near interior week circle 6, with the effect that pushes back of above-mentioned independent circular trough 8 similarly, the effect of pushing back is worked to fluid-encapsulated.
In addition, in the situation that be used in the running shaft Y that carries out bidirectional rotary, also the rotation shaft seal of a kind of can usining deal with (as right rotation with and anticlockwise with in any one also can use), and, can make sealability improve significantly.Especially on-streamly can access good sealability.
The present invention can carry out design alteration, for example, in the situation that only making independent circular trough 8 with respect to round 7 bias of periphery, also can form a plurality of independent circular troughs 8.In addition, in the situation that making interior week round 6 and independent circular trough 8 with respect to round 7 bias of periphery, it is more than 2 or 4 also can making the number (being not limited to 3 shown in 1 shown in Fig. 1 or Fig. 6) of independent circular trough 8.In addition, also can make the interior week circle 6 of seal element 4 and independent circular trough 8 hold different offset ground with respect to the periphery circle 7 of seal element 4 eccentric.In addition, in the situation that thering is a plurality of independent circular trough 8, also can make the mutual offset of independent circular trough 8 different.In addition, the formation beyond seal element 4 (except the formation shown in Fig. 1, Fig. 7 also) be design alteration freely.
As above, about the present invention, in thering is the rotation shaft seal of resin seal element 4, it under the free state of seal element 4 before assembling, is the annulus sheet with interior week round 6 and periphery circle 7, single and even a plurality of independent circular troughs 8 that form in the mode around interior week round 6 set prejudicially with respect to periphery round 7, thereby in the situation that be used in the running shaft Y that carries out bidirectional rotary, also the rotation shaft seal of a kind of can usining deal with (as right rotation with and anticlockwise with in any one also can use), and, can make sealability improve significantly.Especially, on-streamly can access good sealability.
In addition, owing to making interior week circle 6 circle of the peripheries with respect to seal element 47 bias of seal element 4, thereby the arbitrary position that can make sealing force that independent circular trough 8 the produces Zhou Fangxiang on independent circular trough 8 also about equally.
In addition, in thering is the rotation shaft seal of resin seal element 4, it under the free state of seal element 4 before assembling, is the annulus sheet with interior week round 6 and periphery circle 7, make round 7 bias of interior week circle 6 peripheries with respect to seal element 4 of seal element 4, thereby in the situation that be used in the running shaft Y that carries out bidirectional rotary, also the rotation shaft seal of a kind of can usining deal with (as right rotation with and anticlockwise with in any one also can use), and, can make sealability improve significantly.Especially, on-streamly can access good sealability.
Claims (3)
1. a rotation shaft seal, there is resin seal element (4), it is characterized in that, under the free state of sealing element (4) before assembling, for having the annulus sheet of interior Zhou Yuan (6) and periphery circle (7), the single and even a plurality of independent circular troughs (8) that form in the mode around described interior Zhou Yuan (6) set prejudicially with respect to described periphery circle (7).
2. rotation shaft seal according to claim 1, is characterized in that, makes the described interior Zhou Yuan (6) of seal element (4) with respect to described periphery circle (7) bias of seal element (4).
3. a rotation shaft seal, there is resin seal element (4), it is characterized in that, under the free state of sealing element (4) before assembling, for thering is the annulus sheet of interior Zhou Yuan (6) and periphery circle (7), make the described interior Zhou Yuan (6) of seal element (4) with respect to described periphery circle (7) bias of seal element (4).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-164603 | 2012-07-25 | ||
| JP2012164603A JP5985288B2 (en) | 2012-07-25 | 2012-07-25 | Rotating shaft seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103574034A true CN103574034A (en) | 2014-02-12 |
| CN103574034B CN103574034B (en) | 2016-01-27 |
Family
ID=50046474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310312363.4A Expired - Fee Related CN103574034B (en) | 2012-07-25 | 2013-07-24 | Rotation shaft seal |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5985288B2 (en) |
| CN (1) | CN103574034B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110062859A (en) * | 2017-08-24 | 2019-07-26 | 国立大学法人埼玉大学 | Sealing device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20230145486A (en) * | 2021-06-15 | 2023-10-17 | 엔오케이 가부시키가이샤 | sealing device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2932317A1 (en) * | 1979-08-09 | 1981-02-26 | Kloeckner Humboldt Deutz Ag | Seal for steering column wall panel passage - has eccentric seal disc on column in annular groove in bore of bush on panel and marked disc |
| SU887854A1 (en) * | 1980-03-12 | 1981-12-07 | Предприятие П/Я М-5356 | End seal |
| SU1413344A1 (en) * | 1987-01-23 | 1988-07-30 | Дзержинский филиал Ленинградского научно-исследовательского и конструкторского института химического машиностроения | End-face seal |
| GB2258275A (en) * | 1991-07-27 | 1993-02-03 | Dowty Seals Ltd | A shaft seal |
| US20030098549A1 (en) * | 2001-11-28 | 2003-05-29 | Federal-Mogul World Wide, Inc. | Hydrodynamic seal and method of making the same |
| CN2594554Y (en) * | 2002-11-07 | 2003-12-24 | 天津新技术产业园区鼎名密封有限公司 | Three dimensional helical groove end face sealer with dual helical angle |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4739998A (en) * | 1986-11-21 | 1988-04-26 | Federal-Mogul Corporation | Bidirectional seal with elliptical sealing barriers |
| JP2996558B2 (en) * | 1991-11-29 | 2000-01-11 | 三菱電線工業株式会社 | Rotating seal |
| JP2789151B2 (en) * | 1992-10-21 | 1998-08-20 | 三菱電線工業株式会社 | Rotating seal |
-
2012
- 2012-07-25 JP JP2012164603A patent/JP5985288B2/en not_active Expired - Fee Related
-
2013
- 2013-07-24 CN CN201310312363.4A patent/CN103574034B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2932317A1 (en) * | 1979-08-09 | 1981-02-26 | Kloeckner Humboldt Deutz Ag | Seal for steering column wall panel passage - has eccentric seal disc on column in annular groove in bore of bush on panel and marked disc |
| SU887854A1 (en) * | 1980-03-12 | 1981-12-07 | Предприятие П/Я М-5356 | End seal |
| SU1413344A1 (en) * | 1987-01-23 | 1988-07-30 | Дзержинский филиал Ленинградского научно-исследовательского и конструкторского института химического машиностроения | End-face seal |
| GB2258275A (en) * | 1991-07-27 | 1993-02-03 | Dowty Seals Ltd | A shaft seal |
| US20030098549A1 (en) * | 2001-11-28 | 2003-05-29 | Federal-Mogul World Wide, Inc. | Hydrodynamic seal and method of making the same |
| CN2594554Y (en) * | 2002-11-07 | 2003-12-24 | 天津新技术产业园区鼎名密封有限公司 | Three dimensional helical groove end face sealer with dual helical angle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110062859A (en) * | 2017-08-24 | 2019-07-26 | 国立大学法人埼玉大学 | Sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5985288B2 (en) | 2016-09-06 |
| CN103574034B (en) | 2016-01-27 |
| JP2014025501A (en) | 2014-02-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20160127 Termination date: 20180724 |