DE2829030A1 - SEALING ARRANGEMENT FOR PRESSURIZED MEDIA, RELATIVELY MOVING PARTS - Google Patents
SEALING ARRANGEMENT FOR PRESSURIZED MEDIA, RELATIVELY MOVING PARTSInfo
- Publication number
- DE2829030A1 DE2829030A1 DE19782829030 DE2829030A DE2829030A1 DE 2829030 A1 DE2829030 A1 DE 2829030A1 DE 19782829030 DE19782829030 DE 19782829030 DE 2829030 A DE2829030 A DE 2829030A DE 2829030 A1 DE2829030 A1 DE 2829030A1
- Authority
- DE
- Germany
- Prior art keywords
- sealing ring
- sealing
- plastic
- sealing arrangement
- ring
- 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.)
- Withdrawn
Links
Classifications
-
- 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
-
- 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
- F16J15/166—Sealings between relatively-moving surfaces with means to prevent the extrusion of the packing
-
- 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
- F16J15/3208—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip provided with tension elements, e.g. elastic rings
Description
-/- / κ. 478?- / - / κ. 478?
Stand der TechnikState of the art
Die Erfindung geht aus von einer Dichtungsanordnung nach der Gattung des Hauptanspruchs. Eine derartige Dichtungsanordnung hat den Machteil, daß die vom O-Ring ausgeübte Vorspannkraft derart auf den Diehtring einwirkt, daß sich bei Druckbeaufschlagung seine beiden außenliegenden Diehtkanten durch den großen Abstand von der Wirkungspiehfcung der Kraft von der abzudichtenden Fläche etwas abheben können, wodurch Leckage entsteht.The invention is based on a sealing arrangement according to Genre of the main claim. Such a sealing arrangement has the disadvantage that the pretensioning force exerted by the O-ring acts on the Diehtring in such a way that Pressurization of its two outer Diehtkanten due to the large distance from the target the force of the surface to be sealed can lift a little, causing leakage.
Die erfindungsgemäße Dichtungsanordnung mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß durch die Einbettung des zweiten Dichtrings in den ersten Diehtring mehrere Dichtkanten entstehen, wobei die innenliegenden Dichtkanten relativ nahe an der Wirkungslinie der Kraft liegen.The sealing arrangement according to the invention with the characteristic Features of the main claim has the advantage that by embedding the second sealing ring in the first Diehtring creates several sealing edges, with the inner ones Sealing edges are relatively close to the line of action of the force.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Hauptaspruch angegebenen Merkmale möglich.The measures listed in the subclaims are advantageous developments and improvements in the main claim specified features possible.
Zeichnungdrawing
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Sie zeigt einen Teillängsschnitt durch einen Arbeitszylinder. An embodiment of the invention is shown in the drawing and explained in more detail in the following description. It shows a partial longitudinal section through a working cylinder.
909882/0536909882/0536
2823030 R.478 ο2823030 R.478 ο
Der Arbeitszylinder besteht aus einem Zylinderrohr 10, in dem ein Kolben .11 dicht gleitend geführt ist, welcher an einer
Kolbenstange 12 befestigt ist. Die Abdichtung gegenüber der Zylinderwand 10f erfolgt durch eine Dichtungsanordnung 13,
die aus mehreren Dichtringen besteht, von denen zwei in einer in der Kolbenaußenfläche ausgebildeten Ringnut 14 angeordnet
sind.The working cylinder consists of a cylinder tube 10 in which a piston .11 is guided so that it can slide tightly and which is attached to a piston rod 12. The seal against the cylinder wall 10 f is carried out by a sealing arrangement 13,
which consists of several sealing rings, two of which are arranged in an annular groove 14 formed in the piston outer surface.
Der eigentliche Dichtring 15 hat rechteckigen Querschnitt und besteht zweckmäßigerweise aus einem Kunststoff. Radial innerhalb
des Dichtrings 15 liegt ein vorgespannter O-Rxng 16, der
eine VorSpannkraft P auf den Dichtring 15 ausübt. Wären keine
besonderen Maßnahmen getroffen, dann würden bei Druekbeaufshlagung die Dichtkanten a und b infolge des großen Abstands
von der Wirkungslinie F der Vorspannkraft sich etwas vom
Zylinderrohr 10 abheben, wodurch Leckage entsteht.The actual sealing ring 15 has a rectangular cross section and is expediently made of a plastic. A pretensioned O-ring 16, which exerts a pretensioning force P on the sealing ring 15, lies radially within the sealing ring 15. If no special measures were taken, then the sealing edges a and b would be slightly different due to the large distance from the line of action F of the pretensioning force
Lift off cylinder tube 10, causing leakage.
Erfindungsgemäß ist nun im Dichtring 15 ein Dichtring 17
eingebettet, der ebenfalls rechteckigen Querschnitt hat. Er berührt das Zylinderrohr und ist ansonsten allseitig symmetrisch
in den- Dichtring 15 eingebettet. Dadurch entstehen zwei weitere Dichtkanten c, d. Diese liegen wesentlich näher
an der Wirkungslinie der Kraft F, wodurch sie besser an die Zylinderwandung gedrückt werden. Insgesamt sind nun vier
Dichtkanten a bis d vorhanden. Dadurch wird die Dichtwirkung wesentlich verbessert.According to the invention, a sealing ring 17 is now in the sealing ring 15
embedded, which also has a rectangular cross-section. It touches the cylinder tube and is otherwise embedded symmetrically on all sides in the sealing ring 15. This creates two more sealing edges c, d. These are much closer to the line of action of the force F, which means that they are better pressed against the cylinder wall. There are now four in total
Sealing edges a to d available. This significantly improves the sealing effect.
Der Dichtring 17 kann aus demselben Werkstoff bestehen, wie der Dichtring 15a d.h. aus einem Kunststoff - zweckmäßigerweise einem Polytetrafluorathylen-Verbundwerkstoff - oderThe sealing ring 17 can consist of the same material as the sealing ring 15 a, ie of a plastic - expediently a polytetrafluoroethylene composite - or
909882/0535909882/0535
-M- R. 4 789 -M- R. 4 789
aber auch aus einem weicheren Werkstoff, wodurch die Dichtwirkung noch verbessert wird.. Der Dichtring 15 muß eine genügend
große Festigkeit haben, um den Spalt s zwischen Kolbenaußendurchmesser und Zylinderinnenwand zu überbrücken,
d. h. um den Dichtring 17 gegen Spalteinwanderung zu schützen. but also made of a softer material, which improves the sealing effect. The sealing ring 15 must be sufficiently strong to bridge the gap s between the piston outer diameter and the cylinder inner wall.
that is, to protect the sealing ring 17 against infiltration of the gap.
Der O-Ring besteht zweckmäßigerweise aus einem gummielastischen Werkstoff.The O-ring expediently consists of a rubber-elastic one Material.
909882/0535909882/0535
Claims (6)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782829030 DE2829030A1 (en) | 1978-07-01 | 1978-07-01 | SEALING ARRANGEMENT FOR PRESSURIZED MEDIA, RELATIVELY MOVING PARTS |
GB7919217A GB2024365A (en) | 1978-07-01 | 1979-06-01 | Piston packing |
BE0/196057A BE877382A (en) | 1978-07-01 | 1979-06-29 | WATERPROOFING DEVICE FOR MOVABLE ELEMENTS ONE IN RELATION TO ANOTHER SOLICITED BY A PRESSURE AGENT |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782829030 DE2829030A1 (en) | 1978-07-01 | 1978-07-01 | SEALING ARRANGEMENT FOR PRESSURIZED MEDIA, RELATIVELY MOVING PARTS |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2829030A1 true DE2829030A1 (en) | 1980-01-10 |
Family
ID=6043332
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19782829030 Withdrawn DE2829030A1 (en) | 1978-07-01 | 1978-07-01 | SEALING ARRANGEMENT FOR PRESSURIZED MEDIA, RELATIVELY MOVING PARTS |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE877382A (en) |
DE (1) | DE2829030A1 (en) |
GB (1) | GB2024365A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3443278A1 (en) * | 1984-11-28 | 1986-05-28 | Alfred Teves Gmbh, 6000 Frankfurt | Sealing arrangement subjected to pressure |
WO1990000693A1 (en) * | 1987-03-20 | 1990-01-25 | W.S. Shamban Europa A/S (W.S. Shamban & Company A/S) | A combination seal for sealing between two machine parts |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT206929Z2 (en) * | 1986-06-16 | 1987-10-19 | Riva Calzoni Spa | PRESSURIZED FLUID SEAL GROUP FOR ROTARY SHAFTS. |
FR2644111B1 (en) * | 1989-03-09 | 1991-12-06 | Bourgogne Essieux | TURNING JOINT FOR TIRES |
JP6017738B1 (en) * | 2014-12-12 | 2016-11-02 | Nok株式会社 | Sealing device |
DE102016225551A1 (en) | 2016-12-20 | 2018-06-21 | Herbert Hänchen GmbH & Co. KG | Sealing ring for a dynamic contact gasket |
DE102017215193B4 (en) * | 2017-08-30 | 2022-07-14 | Trelleborg Sealing Solutions Germany Gmbh | Rotary seal assembly and rotary seal for high pressure applications |
-
1978
- 1978-07-01 DE DE19782829030 patent/DE2829030A1/en not_active Withdrawn
-
1979
- 1979-06-01 GB GB7919217A patent/GB2024365A/en not_active Withdrawn
- 1979-06-29 BE BE0/196057A patent/BE877382A/en unknown
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3443278A1 (en) * | 1984-11-28 | 1986-05-28 | Alfred Teves Gmbh, 6000 Frankfurt | Sealing arrangement subjected to pressure |
WO1990000693A1 (en) * | 1987-03-20 | 1990-01-25 | W.S. Shamban Europa A/S (W.S. Shamban & Company A/S) | A combination seal for sealing between two machine parts |
US5156410A (en) * | 1987-03-20 | 1992-10-20 | W.S. Shamban Europa A/S (W.S. Shamban & Company A/S) | Combination seal for sealing between two machine parts |
Also Published As
Publication number | Publication date |
---|---|
BE877382A (en) | 1979-10-15 |
GB2024365A (en) | 1980-01-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |