DE1600493A1 - Sealing ring - Google Patents

Sealing ring

Info

Publication number
DE1600493A1
DE1600493A1 DE19671600493 DE1600493A DE1600493A1 DE 1600493 A1 DE1600493 A1 DE 1600493A1 DE 19671600493 DE19671600493 DE 19671600493 DE 1600493 A DE1600493 A DE 1600493A DE 1600493 A1 DE1600493 A1 DE 1600493A1
Authority
DE
Germany
Prior art keywords
layers
sealing ring
polytetrafluoroethylene
asbestos
reinforcement
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.)
Pending
Application number
DE19671600493
Other languages
German (de)
Inventor
Auf Nichtnennung Antrag
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Istag AG Suhr AG
Original Assignee
Istag AG Suhr AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Istag AG Suhr AG filed Critical Istag AG Suhr AG
Publication of DE1600493A1 publication Critical patent/DE1600493A1/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/02Sealings between relatively-stationary surfaces
    • F16J15/06Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/104Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure

Description

"D i c h t u n g -s rin g" Die Erfindung betrifft einen Dichtring zur Abdichtung einer Spindel od. dgl. in einem Gehäuse mit mehreren, in Ebenen senkrecht zur Achse verlaufenden, übereinanderliegenden Schichten aus kunststoff= und/oder kautschukgebundenen Asbestplatten."D i c h t u n g -s rin g" The invention relates to a sealing ring for sealing a spindle or the like in a housing with several, in planes perpendicular to the axis, superimposed layers of plastic = and / or rubber-bonded asbestos panels.

.Diese Ringe. werden durch Stanzen und Aufeinanderlegen von ringförmigen Teilen aus solchen Asbestplatten gebildet, wobei die einzelnen Teile zumeist aneinandergeklebt werden. Die Kunststoff- und/oder kautschukgebundenen Asbestplatten werden dabei zumeist nach dem sogenannten It-Verfahren hergestellt..These rings. are made by punching and stacking ring-shaped Parts formed from such asbestos sheets, the individual parts mostly being glued together will. The plastic and / or rubber-bonded asbestos sheets are used mostly produced according to the so-called It process.

Zur Erzielung einer besonders guten Dichtwirkung ist es bekannt, solche Ringe reit einer Verstärkung aus: zwischengelagertem Polytetrafluoräthylen, im folgenden PTFE abgekürzt, zu versehen. Diese bekannten Ringe bestanden aus einem Metallring aus f1Ft# und je einem darüber und darunter koaxial angeordneten, etwa gleich hohen Ring aus mehreren Schichten der oben geschilderten Asbestplatten. Gemäss der Erfindung weist dein Dichtungsring Verstärkungen aus mehreren dünnen Schichten aus PTFE auf, die zwischen je zwei benachbarten Asbestplattenschichten angeordnet sind.In order to achieve a particularly good sealing effect, it is known to provide such rings with reinforcement: interposed polytetrafluoroethylene, abbreviated to PTFE in the following. These known rings consisted of a metal ring made of f1Ft # and one above and one below coaxially arranged, approximately equal height ring made of several layers of the above-described asbestos panels. According to the invention, your sealing ring reinforcements of several thin layers of PTFE, which between each two adjacent layers are arranged asbestos board.

Die durch die Erfindung erzielte Verbesserung besteht vor allem darin, dass durch die Verwendung mehrerer dünner Schichten aus PTFE deren Lebensdauer wesentlich verlängert wird, weil dünnere Schichten aus POFE eine bedeutend geringere Fliessfö.äigkeit aufweisen, als dicke Ringe aus demselben Material. Der Verschleiss bei der Abdichtung hin- und hergehender :,windeln verrin-ert sich deshalb.The improvement achieved by the invention consists primarily in that by using several thin layers of PTFE, their service life is essential is extended because thinner layers of POFE have a significantly lower fluidity have, as thick rings made of the same material. The wear and tear of the seal to and fro:, diapers are therefore reduced.

Ausserderl ist der Heäbungswiderstand eines solchen Ringes gegen eine bewegte Spindel geringer. Bekanntlich hat ja, fTFE einen sehr geringen Reibungskoeffizienten; da sich bei der Bewegung der Spindel ein dünner PTFE-berzug an der Innenbohrung des Dichtungsringes auf die Stirnflächen der benachbarten Asbestplatten überträgt, wird durch die Anordnung mehrerer, im Dichtungsring verteilter Schichten aus PTFE eine bessere Verteilung des dünnen, reibungsmindernden PTFE-Überzugs über. die gesamte Bohrung des erfindungsgemässen Dichtungsringes erreicht. Ausserdem ergibt sich eine bedeutende Verbilligung des Ventilringes, weil insgesamt geringere =Zeagen von PTFE genügen und diese dünnen Schichten bedeutend einfacher als die dicke. Schichten der bekannten Ringe hergestellt werden k,Un.nen.Another thing is the heat resistance of such a ring to one moving spindle less. As is well known, fTFE has a very low coefficient of friction; because when the spindle moves, there is a thin PTFE coating on the inner bore of the sealing ring transfers to the end faces of the adjacent asbestos panels, is achieved through the arrangement of several layers of PTFE distributed in the sealing ring a better distribution of the thin, friction-reducing PTFE coating over. the whole Bore of the sealing ring according to the invention achieved. There is also a Significant reduction in the price of the valve ring, because overall lower values of PTFE suffice and these thin layers are significantly easier than the thick ones. layers of the well-known rings can be made.

Vorteilhaft werden die Verstärkungsschichten aus PTFE maximal doppelt so stark wie die Asbestplattenteilschichten, insbesondere 1 - 2 mm dick, ausgebildet. In der Zeichnung ist ein Dichtungsring@gemäss der Ei- aufei@l.anderieeeY@ r.@ findung dargestellt. Er besteht aus ' f örmigen Schichten 1 aus Asbestplatten vorm. @.@..gef.ü:r 1 #M p-;-17 - wobei über die Gesamthöhe des Ringes verteilt.# '@ Ri.xCDe PTFE mit gleichen Durchmessern, jedoch ungefäl_x `? ;5 r= äJ . - geordnet sind. Der so aufgebaute Ring hat bei besonders guter Dichtwirkung eine grosse Lebensdauer und einen geringen Reibungswiderstand.Advantageously, the reinforcement layers made of PTFE are at most twice as thick as the asbestos panel sub-layers, in particular 1-2 mm thick. In the drawing, a sealing ring @ according to the egg aufei @ l.anderieeeY @ r. @ finding shown. It consists of 'Shaped layers 1 made of asbestos panels vorm. @. @ .. gef.ü: r 1 #M p -; - 17 - where distributed over the total height of the ring. # '@ Ri.x CD e PTFE with the same diameter, but about x `? ; 5 r = ä J. - are ordered. The ring constructed in this way has a long service life and low frictional resistance with a particularly good sealing effect.

Claims (3)

Patentansprüche: 1) Dichtungsring zur Abdichtung einer Spindel od. dgl. in einem Gehäuse, bestehend aus drei oder mehrex-en in Ebenen senkrecht zur Achse verlaufenden, übereinanderliegenden Schichten aus kunststoff- und/oder kautschukgebundenen Asbestplatten und einer Verstärkung aus zwischengelagertem Polytetrafluoräthylen, dadurch gekennzeichnet, dass die Verstärkung aus mehreren, dünnen Schichten aus Polytetrafluoräthylen besteht, die zwischen je zwei Asbestplattenschicriten angeordnet sind. Claims: 1) Sealing ring for sealing a spindle or. Like. In a housing consisting of three or morex-s in planes perpendicular to Axis running, superimposed layers made of plastic and / or rubber-bonded Asbestos panels and a reinforcement made of temporarily stored polytetrafluoroethylene, characterized in that the reinforcement is made up of several thin layers There is polytetrafluoroethylene, which is arranged between two asbestos plates are. 2) Dichtungsring nach Anspruch 1, dadurch gekennzeichnet, dass mindestens drei, über die Höhe des Ringes verteilte Verstärkungen aus dünnen Polytetrafluoräthylen-Schichten'vorgesehen sind. 2) Sealing ring according to claim 1, characterized in that at least three reinforcements made of thin polytetrafluoroethylene layers distributed over the height of the ring are. 3) Dichtungsring nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Verstärkungsschichten aus Polytetrafluorä,thylen dicker, höchstens jedoch doppelt so dick als bzw. wie die einzeln-' nen Asbestplattenschichten sind.3) sealing ring according to claim 1 or 2, characterized in that the Reinforcement layers made of polytetrafluoroethylene, thicker, but not more than double as thick as or as the individual layers of asbestos are.
DE19671600493 1967-04-24 1967-04-24 Sealing ring Pending DE1600493A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEJ0033511 1967-04-24

Publications (1)

Publication Number Publication Date
DE1600493A1 true DE1600493A1 (en) 1970-01-02

Family

ID=7204784

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19671600493 Pending DE1600493A1 (en) 1967-04-24 1967-04-24 Sealing ring

Country Status (1)

Country Link
DE (1) DE1600493A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0202909A2 (en) * 1985-05-20 1986-11-26 Parker Hannifin Corporation Elastomeric seal assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0202909A2 (en) * 1985-05-20 1986-11-26 Parker Hannifin Corporation Elastomeric seal assembly
EP0202909A3 (en) * 1985-05-20 1987-03-18 Parker Hannifin Corporation Elastomeric seal assembly

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