CN1306193C - Sealing ring - Google Patents
Sealing ring Download PDFInfo
- Publication number
- CN1306193C CN1306193C CNB021200734A CN02120073A CN1306193C CN 1306193 C CN1306193 C CN 1306193C CN B021200734 A CNB021200734 A CN B021200734A CN 02120073 A CN02120073 A CN 02120073A CN 1306193 C CN1306193 C CN 1306193C
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- CN
- China
- Prior art keywords
- sleeve gasket
- seal ring
- sealing sleeve
- confined bed
- sealed
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Abstract
A sealing ring consists of a sealing collar made of a polymer material. The sealing collar is sealed on the side opposite the seal surface. The thickness of the collar (1) is up to 0.6mm, while the seal (4) thickness is 0.005-0.3mm.
Description
Technical field
The present invention relates to a kind of seal ring, comprise a sealing sleeve gasket (Dichtmanschette) of forming by polymer material, wherein seal sleeve gasket and on a side on machine parts surface to be sealed dorsad, have a confined bed (Versiegelung).
Background technique
By the known a kind of such seal ring of DE 34 02 366 A1 Figure 10.Here seal sleeve gasket and form, and at first make dish type by a kind of thermoplastic material.This dish is radially cut open on its partial width internally, and wherein the dish that formed like this before dish being fixed on the supporting ring is crooked in opposite directions mutually.Dish constitutes sealing lip.Sealing lip is pressed on the surface to be sealed of machine parts by a garter spring in Figure 10, be formed for the support of garter spring by the coating on the sealing lip, coating is made up of elastomeric material, and coating only is used for the helical spring support of looping.
Summary of the invention
The objective of the invention is, improve the described seal ring of beginning in this wise, even make to be attached on the machine parts especially submissively, therefore only have little thickness and/or when forming, also can reach the excellent sealing effect of machine parts to be sealed by this seal ring by porous material at the sealing sleeve gasket.
For this reason, the invention provides a kind of seal ring, comprise a sealing sleeve gasket of forming by polymer material, wherein said sealing sleeve gasket has a confined bed on the side on machine parts surface to be sealed dorsad at it, it is characterized by: the thickness of described sealing sleeve gasket is 0.6mm to the maximum, and the thickness of described confined bed is 0.005 to 0.3mm; And the thickness of described sealing sleeve gasket is 2 to 120 with the ratio of the thickness of described confined bed.
According to the present invention, the thickness of sealing sleeve gasket is at most 0.6mm, and the thickness of confined bed is 0.005 to 0.3mm.The advantage that this structure had is that the sealing sleeve gasket is fitted on the machine parts to be sealed owing to its thickness is little especially submissively.Because the good movement/flexibility of thin sealing sleeve gasket, it can follow the disequilibrium and/or the out of roundness of machine parts to be sealed particularly well.Therefore obtain good sealing property all the time.If adopt such 0.6mm of being no more than thick not with the sealing sleeve gasket of desired confined bed, the usability of seal ring is generally speaking not too satisfactory so, this be because, relevant with the material of forming the sealing sleeve gasket, medium to be sealed more or less is by thin sealing sleeve gasket outside boundary infiltration.Particularly when adopting such sealing sleeve gasket of forming by PTFE mixture (PTFE-Compound), can observe seepage.In order to be issued to good sealing effect in the situation without confined bed, the sealing sleeve gasket must have much bigger thickness, but like this flexibility is not enough again.
In order to guarantee on the one hand, the sealing sleeve gasket is fitted on the machine parts to be sealed very submissively, produces good sealing effect on the other hand, and confined bed is set, it is arranged on the side on the machine parts surface to be sealed dorsad that seals sleeve gasket, and has 0.005 to 0.3mm thickness.Owing to have only half of stuffing box gland mat thickness at most, confined bed has only negligible influence to the flexibility of sealing sleeve gasket, arrives extraneous but make medium to be sealed can not pass thin sealing sleeve gasket.
The thickness of sealing sleeve gasket preferably mostly is most 0.5mm, and the thickness of confined bed is 0.01 to 0.1mm.This size is proving particularly advantageous aspect the flexibility of sealing sleeve gasket and the good sealing effect, and reaches long working life simultaneously.Although the sealing sleeve gasket is flexible fine, got rid of by sealing the seepage on the outside boundary of sleeve gasket by confined bed.
The thickness of sealing sleeve gasket can be 2 to 120 with the ratio of the thickness of confined bed.This is than preferably being at least 10.The least possible for making the influence of sealing flexibility of sleeve gasket and usability, it is favourable that the thickness of confined bed is reduced to as far as possible for a short time, but must guarantee the reliable sealing of sealing sleeve gasket gas porosity simultaneously.For the combination of materials of great majority sealing sleeve gasket/confined bed, the thickness of sealing sleeve gasket is just enough greater than 10 with the ratio of the thickness of confined bed.
The sealing sleeve gasket can be made up of PTFE.Even the sealing sleeve gasket of being made up of PTFE is additional lubricated here, for example by medium to be sealed, it is favourable still having good urgent ride quality during interruption.The sealing sleeve gasket of being made up of PTFE is compared more wear-resisting with the sealing sleeve gasket of being made up of elastomeric material in addition.Becoming smooth in the surface of PTFE later on through negligible little initial wear, the wearing and tearing of then just special scratch resistance erosion property.PTFE has such advantage in addition, and it has stability for most of media to be sealed.
Confined bed preferably is made up of a kind of polymer material.Since with respect to the sealing sleeve gasket, the very little and extraordinary flexibility that causes thus of the thickness of confined bed, and the usability of sealing sleeve gasket is not subjected to adverse influence.Although the sealing sleeve gasket loosens, still can seal reliably.
The sealing sleeve gasket can be connected with a supporting ring of being made up of tough hard material by means of a mesosphere.For example have such possibility by the mesosphere, sealing sleeve gasket vibration isolation ground be fixed on the supporting ring, seal sleeve gasket can not be well or can not directly be fixed on material on the supporting ring fully, can be connected with supporting ring by means of the mesosphere.
Confined bed preferably joins mutually integratedly with the mesosphere and does to such an extent that material is consistent, wherein no matter be that confined bed or mesosphere preferably are made up of elastomeric material.Because the structure that confined bed and mesosphere are connected integratedly mutually, seal ring can make things convenient for and make inexpensively.Seal ring has the less structure of a kind of part.
The sealing sleeve gasket can arch upward to extraneous direction back to space to be sealed.Here advantageously, do not contact at the situation bottom impermeable layer that uses seal ring in accordance with regulations with medium to be sealed.In that this is very favorable aspect the material of selecting confined bed suitably.For the sole criterion of selecting the confined bed material to play a decisive role is the sealing sleeve gasket in the sealing of machine parts one side dorsad.Might not need with dielectric compatibility to be sealed.
The sealing sleeve gasket can have the concave-convex surface profile with confined bed respectively on its relative mutually side.The concave-convex surface profile of sealing sleeve gasket and confined bed can design just the samely.Can do durablely especially by the connection between concave-convex surface profile seal sleeve gasket and the confined bed.Confined bed preferably adheres to the surface of sealing sleeve gasket and is connected.Being connected between confined bed and the sealing sleeve gasket in any case all to liquid seal (fluessigkeitsdicht).Because the structure of concave-convex surface profile is just the same, confined bed becomes with the concrete mutually location of sealing sleeve gasket before it finally is connected and makes things convenient for manyly.Almost obtain the configuration of correct position naturally by the concave-convex surface profile, therefore setup error reduces to minimum limit when making seal ring.
Secondly the concave-convex surface profile has such advantage, and it is sealed also to form a kind of shape the adhesion of merging except material between confined bed and sealing sleeve gasket connects, even it still helps lasting connection when the sealing sleeve gasket is subjected to strong dynamic load.
Confined bed sees to have corrugated basically concave-convex surface profile in the longitudinal section sealing dorsad on the side of sleeve gasket.Additionally or selectively have such possibility, the sealing sleeve gasket has the feedback spiral chute of cavity effect to be sealed on one day in the side towards surface to be sealed.Confined bed is sealing the flexibility that concave-convex surface profile on sleeve gasket one side has improved the compound body of being made up of sealing sleeve gasket and confined bed dorsad.Obtain the bigger surface profile of heat radiation better by corrugated concave-convex surface profile in addition, this particularly works as the seal ring that is proposed is favourable when being used in the automobile; Eliminated the too high heat load that reduces working life by corrugated concave-convex surface profile.
Feed back spiral chute and impel medium to be sealed to feed back, and prevent to leak to cavity direction to be sealed.The medium to be sealed that is in addition under the sealing sleeve gasket promotes the lubricated of sealing sleeve gasket, and causes the good usability that remains unchanged when increasing the service life thus.
Confined bed can cover the end face of the sealing sleeve gasket that arches upward vertically, and wherein the cover part closely surrounds surface to be sealed under the effect of radial tightening power.If adopt this covering of sealing sleeve gasket end face, not only prevent medium to be sealed basically radially by the sealing lip that arches upward vertically from the surface to be sealed of machine parts to extraneous direction seepage, and prevent to be parallel to surface to be sealed and pass sealing lip to extraneous direction seepage.The cover part is a constituent element of confined bed, and wherein the connection between cover part and the sealing sleeve gasket end face is to liquid seal.
The cover part can form concavo-convex profile towards a side on surface to be sealed and other exposed surfaces of cover part, so that reach for example already mentioned advantage in front.
The axial length of cover part can be for 0.005 to 0.3mm, and wherein the cover part axial length preferably is equivalent to the thickness of confined bed.Because the cover part has only very little thickness, it has only little of negligible influence for the flexibility of seal ring of the present invention, therefore as discussed previously, it is fitted on the machine parts to be sealed especially submissively, prevents that in addition medium to be sealed from passing the sealing sleeve gasket undesirably to extraneous seepage.
If the axial length of cover part is equivalent to the thickness of confined bed, there is not the sudden change of material thickness so in its confined bed/zone, cover part of seal ring.Therefore the manufacturing, particularly confined bed/cover part of this seal ring with seal being connected of sleeve gasket, can be convenient especially.
Description of drawings
By means of Fig. 1 to 7 seven embodiments that press seal ring of the present invention are described in more detail below.
They are represented with schematic representation respectively:
Fig. 1 first embodiment wherein seals sleeve gasket and only has the concave-convex surface profile that feeds back the spiral chute form on machine parts one side to be sealed,
Fig. 2 second embodiment is similar to the embodiment among Fig. 1, wherein no matter being that stuffing box gland pays somebody's debt and expect repayment later is that confined bed additionally has the concave-convex surface profile respectively,
Fig. 3 the 3rd embodiment is similar to the embodiment among Fig. 1, and wherein confined bed additionally has the concavo-convex profile of corrugated surface sealing dorsad on the side of sleeve gasket,
Fig. 4 the 4th embodiment is similar to the embodiment among Fig. 2, and wherein confined bed additionally has the concavo-convex profile of corrugated surface sealing dorsad on the side of sleeve gasket,
Fig. 5 the 5th embodiment is similar to the embodiment among Fig. 1, and wherein the unit of being made up of sealing sleeve gasket and confined bed arches upward to extraneous direction,
Fig. 6 the 6th embodiment is similar to the embodiment among Fig. 5,
Fig. 7 the 7th embodiment is equivalent to the embodiment among Fig. 6 basically, covers but the end face of the sealing sleeve gasket that wherein arches upward vertically is capped part, and the cover part closely surrounds surface to be sealed under the effect of radial tightening power.
Embodiment
Fig. 1 to 7 represents an embodiment of seal ring respectively.Seal ring fixes one by sealing the unit that sleeve gasket 1 and confined bed 4 are formed respectively by a supporting ring 8 among the embodiment shown here above it.Seal sleeve gasket in these embodiments and form by the PTFE mixture respectively, and have the thickness of 0.6mm at the most.Be provided with a confined bed 4 on the side of machine parts dorsad at sealing sleeve gasket 1, it is made up of polymer material respectively among the embodiment shown here, and the thickness 5 that wherein seals sleeve gasket 1 is at least 10 with the ratio of the thickness 6 of confined bed 4.The thickness 6 of confined bed 4 is 0.05mm among the embodiment shown here.
First embodiment of expression seal ring among Fig. 1.The unit of being made up of sealing sleeve gasket 1 and confined bed 4 arches upward to cavity 9 directions to be sealed, and surrounds the machine parts of making axle in this embodiment, is fitted in radial tightening power on the circumference of axle.The end face 15 of sealing sleeve gasket 1 is arranged in the radial plane 16 that has supporting ring 8 end faces 17, so the seal ring here axially has compact especially size.Supporting ring 8 is made up of the plate of a deep-draw in the present embodiment, Sealing 18 that bears static load of sulfuration on its radial outside.By means of the mesosphere of being made up of polymer material 7, sealing sleeve gasket 1 is connected with supporting ring 8, and wherein mesosphere 7 is connected and the material unification integratedly mutually with confined bed 4.As among all the other embodiments, confined bed 4 makes that medium to be sealed can not be from the material arrival extraneous 10 of cavity 9 to be sealed by sealing sleeve gasket 1.
Confined bed 4 is connected mutual adhesion the in liquid seal ground in its relative mutually zone with sealing sleeve gasket 1.
Representation class is similar to second embodiment of the embodiment among Fig. 1 among Fig. 2.Embodiment among Fig. 2 and the difference of the embodiment among Fig. 1 are: sealing sleeve gasket 1 and confined bed 4 additionally have concave-convex surface profile 11,12 respectively on its mutual facing surfaces, they design just the samely mutually.Because strengthened the surface of contact that seals sleeve gasket and confined bed by concave-convex surface profile 11,12, the connection between sealing sleeve gasket 1 and the confined bed 4 obtains better endurance.Better connect endurance and not only come from the sealing sleeve gasket 1 bigger surface that 4 mutual adhesions are connected with confined bed, and come from the sealed connection of two mutual shapes of part.
Expression is by the 3rd embodiment of seal ring of the present invention among Fig. 3, and it is similar to the embodiment of Fig. 1.Confined bed 4 has one sealing dorsad on the side of sleeve gasket 1, in the longitudinal section, see, basically corrugated concave-convex surface profile 13, it is compared with embodiment among Fig. 1 because bigger surface area is facilitated heat radiation better from confined bed 4, and causes by sealing the unit that sleeve gasket 1 and confined bed 4 form and have better flexibility.
Expression the 4th embodiment among Fig. 4, it has concentrated the advantage of the embodiment in Fig. 2 and 3.On the one hand obtain sealing very durable connection between sleeve gasket 1 and the confined bed 4, obtain from the good heat radiation of seal ring by the concavo-convex profile 13 of corrugated surface on the other hand to cavity 9 to be sealed by concave-convex surface profile 11,12.
Expression wherein seals sleeve gasket 1 and confined bed 4 and all arches upward to extraneous 10 directions against cavity 9 to be sealed by another embodiment of seal ring of the present invention among Fig. 5.In such an embodiment advantageously, confined bed 4 does not contact with medium to be sealed from cavity 9 to be sealed.Therefore can select as far as possible little confined bed 4 materials of flexibility infringement to sealing sleeve gasket 1.
The 6th kind of embodiment of expression seal ring among Fig. 6, it is the same with seal ring among Fig. 5 to have by sealing the unit that sleeve gasket 1 and confined bed 4 are formed, and it arches upward to extraneous 10 directions.
The 7th kind of embodiment of expression seal ring among Fig. 7, wherein confined bed 4 covers the end face 19 of the sealing sleeve gasket 1 that arches upward vertically.Cover part 21 closely surrounds to be sealed surperficial 2 under the effect of radial tightening power.Cover part 21 has the axial length 20 that is equivalent to confined bed 4 thickness 6.Avoid thus medium to be sealed from cavity 9 to be sealed be arranged essentially parallel to axis and be parallel to be sealed surperficial 2 pass the sealing sleeve gasket 1 ooze out; Both having got rid of medium to be sealed thus radially also gets rid of medium and oozes out vertically.
Cover part 21 not only is confined to the embodiment by Fig. 1.Embodiment corresponding to Fig. 1 to 6 also can have a kind of like this confined bed 4: it covers the end face 19 of the sealing sleeve gasket 1 that arches upward vertically by cover part 21, and closely surrounds to be sealed surperficial 2 of machine parts 3 under the effect of radial tightening power.Axial length 20 by cover part among the embodiment of Fig. 7 shown here is equivalent to the thickness 6 of confined bed 4.
Sealing sleeve gasket 1 has the spiral chute 14 of feedback respectively among the embodiment in Fig. 1 to 7 on a side of machine parts 3, and it feeds back medium to be sealed to cavity 9 directions to be sealed.
Claims (15)
1. seal ring, comprise a sealing sleeve gasket of forming by polymer material, wherein said sealing sleeve gasket has a confined bed on the side on machine parts surface to be sealed dorsad at it, it is characterized by: the thickness (5) of described sealing sleeve gasket (1) is 0.6mm to the maximum, and the thickness (6) of described confined bed (4) is 0.005 to 0.3mm; And the thickness (5) of described sealing sleeve gasket (1) is 2 to 120 with the ratio of the thickness (6) of described confined bed (4).
2. by the seal ring of claim 1, it is characterized by: the thickness (6) of described confined bed (4) is 0.01 to 0.1mm.
3. by the seal ring of claim 1, it is characterized by: described ratio is at least 10.
4. by each seal ring of claim 1 to 3, it is characterized by: described sealing sleeve gasket (1) is made up of the PTFE mixture.
5. by each seal ring of claim 1 to 3, it is characterized by: described confined bed (4) is made up of polymer material.
6. by each seal ring of claim 1 to 3, it is characterized by: described sealing sleeve gasket (1) is connected with a supporting ring of being made up of tough hard material (8) by means of a mesosphere (7).
7. by the seal ring of claim 6, it is characterized by: described confined bed (4) and described mesosphere (7) are done to such an extent that be connected mutually integratedly and the material unification.
8. by each seal ring of claim 1 to 3, it is characterized by: the contrary cavity to be sealed (9) of described sealing sleeve gasket (1) arches upward to extraneous (10) direction.
9. by each seal ring of claim 1 to 3, it is characterized by: described sealing sleeve gasket (1) and described confined bed (4) have a concave-convex surface profile (11,12) respectively on its mutual relative side.
10. by the seal ring of claim 9, it is characterized by: the described concave-convex surface profile (11,12) of described sealing sleeve gasket (1) and described confined bed (4) designs just the samely.
11. each the seal ring by claim 1 to 3 is characterized by: described confined bed (4) sees to have a corrugated basically concave-convex surface profile (13) in the seal ring longitudinal section on a side of described sealing sleeve gasket (1) dorsad.
12. each the seal ring by claim 1 to 3 is characterized by: described sealing sleeve gasket (1) has a feedback spiral chute (14) to cavity to be sealed (9) effect on a side of surface to be sealed (2).
13. the seal ring by claim 1 is characterized by: described confined bed (4) covers the end face (19) of the described sealing sleeve gasket (1) that arches upward vertically, and closely surrounds surface to be sealed (2) under the effect of radial tightening power.
14. by the seal ring of claim 13, it is characterized by: the axial length (20) of cover part (21) is 0.005 to 0.3mm.
15. by the seal ring of claim 13 or 14, it is characterized by: the axial length (20) of cover part (21) is equivalent to the thickness (6) of confined bed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10206624.8 | 2002-02-15 | ||
| DE10206624A DE10206624A1 (en) | 2001-03-27 | 2002-02-15 | seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1438440A CN1438440A (en) | 2003-08-27 |
| CN1306193C true CN1306193C (en) | 2007-03-21 |
Family
ID=27674705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021200734A Expired - Fee Related CN1306193C (en) | 2002-02-15 | 2002-05-22 | Sealing ring |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1306193C (en) |
| BR (1) | BR0300050A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2554878B1 (en) * | 2011-08-03 | 2016-07-13 | Carl Freudenberg KG | Seal |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4504067A (en) * | 1984-05-30 | 1985-03-12 | Garlock Inc. | High pressure shaft seal with low-friction lip liner |
| CN1038148A (en) * | 1988-05-31 | 1989-12-20 | 钱德森 | Wide lip-shaped fluoroplastic water sealing member |
| US6079715A (en) * | 1996-10-15 | 2000-06-27 | Dichtungstechnik G. Bruss Gmbh & Co. Kg | Rotary shaft seal having a PTFE seal lip and a method and apparatus of manufacturing same |
| WO2000079157A1 (en) * | 1999-06-18 | 2000-12-28 | Nok Corporation | Lip-type high-pressure seal |
| US6182975B1 (en) * | 1993-06-04 | 2001-02-06 | Nok Corporation | Sealing device having an annular space between sealing lips |
-
2002
- 2002-05-22 CN CNB021200734A patent/CN1306193C/en not_active Expired - Fee Related
-
2003
- 2003-01-14 BR BR0300050-8A patent/BR0300050A/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4504067A (en) * | 1984-05-30 | 1985-03-12 | Garlock Inc. | High pressure shaft seal with low-friction lip liner |
| CN1038148A (en) * | 1988-05-31 | 1989-12-20 | 钱德森 | Wide lip-shaped fluoroplastic water sealing member |
| US6182975B1 (en) * | 1993-06-04 | 2001-02-06 | Nok Corporation | Sealing device having an annular space between sealing lips |
| US6079715A (en) * | 1996-10-15 | 2000-06-27 | Dichtungstechnik G. Bruss Gmbh & Co. Kg | Rotary shaft seal having a PTFE seal lip and a method and apparatus of manufacturing same |
| WO2000079157A1 (en) * | 1999-06-18 | 2000-12-28 | Nok Corporation | Lip-type high-pressure seal |
Also Published As
| Publication number | Publication date |
|---|---|
| BR0300050A (en) | 2004-08-03 |
| CN1438440A (en) | 2003-08-27 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070321 Termination date: 20180522 |
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| CF01 | Termination of patent right due to non-payment of annual fee |