DE1957650A1 - Elastic sealing element - Google Patents

Elastic sealing element

Info

Publication number
DE1957650A1
DE1957650A1 DE19691957650 DE1957650A DE1957650A1 DE 1957650 A1 DE1957650 A1 DE 1957650A1 DE 19691957650 DE19691957650 DE 19691957650 DE 1957650 A DE1957650 A DE 1957650A DE 1957650 A1 DE1957650 A1 DE 1957650A1
Authority
DE
Germany
Prior art keywords
sealing element
sealing
elastic sealing
pressure
rings
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
DE19691957650
Other languages
German (de)
Inventor
Christian Buerkert
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19691957650 priority Critical patent/DE1957650A1/en
Priority to FR7011723A priority patent/FR2038269B1/fr
Priority to GB1265234D priority patent/GB1265234A/en
Priority to GB4726670A priority patent/GB1311536A/en
Priority to CH1660170A priority patent/CH508152A/en
Priority to FR7041006A priority patent/FR2069498A5/fr
Priority to US00090586A priority patent/US3768819A/en
Publication of DE1957650A1 publication Critical patent/DE1957650A1/en
Pending legal-status Critical Current

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
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/021—Sealings between relatively-stationary surfaces with elastic packing
    • F16J15/022—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material
    • F16J15/024—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material the packing being locally weakened in order to increase elasticity
    • F16J15/025—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material the packing being locally weakened in order to increase elasticity and with at least one flexible lip
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • F16K11/0712—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides comprising particular spool-valve sealing means

Description

Christian Bürkert 195765QChristian Bürkert 195765Q

7119 Inge1fingen7119 Inge1fingen

Elastisches DichtungselementElastic sealing element

Die Erfindung betrifft ein elastisches Dichtungselement, welches sowohl für statische als auch für dynamische Dichtungsaufgaben benutzt werden kann.Derartige Dichtungselemente sollen bei niedrigen Drücken bereits zuverlässig abdichten, hohen Drücken standhalten, bei hin- und hergehenden sowie bei rotierenden Bewegungen keine Reibungskräfte erzeugen und einen geringen Verschleiß aufweisen. Außerdem wird gefordert, daß sie kostengünstig mit modernen Per-The invention relates to an elastic sealing element which is used for both static and dynamic sealing tasks Such sealing elements should be used at low Already reliably seal pressures, withstand high pressures, none for reciprocating and rotating movements Generate frictional forces and have low wear. In addition, it is required that they be cost-effective with modern per-

tigungsverfahren herstellbar sind.manufacturing processes are producible.

Bekannt geworden sind für diese Zwecke in erster Linie O-Ringe, die mit einer vorgeschriebenen Pressung in den Dichtungsspalt oder in die Nut eingelegt bzw. auf eine Welle geschoben werden. Es sind auch Lippendichtungen bzw. Nutringe bekannt geworden, bei welchen konische bzw. schlank ausgreifende Lippen sich gegen die dichtenden Flächen durch Eigenspannung anlegen und durch den Druck proportional angepreßt werden.Mainly O-rings have become known for these purposes, those with a prescribed pressure in the sealing gap or inserted into the groove or pushed onto a shaft. There are also lip seals or groove rings are known in which Conical or slender, extending lips are placed against the sealing surfaces by internal stress and proportionally by the pressure be pressed.

Der Nachteil bei der Verwendung von O-Ringen ist darin su erblicken, daß sie mit verhältnismäßig engen Toleranzen gefertigt und in Passungen eingelegt werden müssen, die ebenfalls mit kleinen Maßabweichungen hergestellt sein müssen. Die Dichtwirkung, insbesondere bei niedrigen Drücken, erfolgt durch die Eigenpressung über den Ringquerschnitt. Jede Pertigungstoleranz an dem Ring bzw. auf der Welle oder in der Bohrung ruft eine andere Pressung hervor, was sich entweder in der Dichtigkeit, der Reibung oder der Lebensdauer auswirkt. Aus diesem Grunde haben sich O-Ringe im wesentlichen nicht als dynamische, sondern hauptsächlich als statische Dichtungselemente durchgesetzt.The disadvantage of using O-rings is to see that they must be manufactured with relatively tight tolerances and inserted into fits that also have small dimensional deviations must be made. The sealing effect, especially at low pressures, takes place through the intrinsic pressure the ring cross-section. Any manufacturing tolerance on the ring or on the shaft or in the bore causes a different pressure, which is either in the tightness, the friction or the service life affects. Because of this, O-rings essentially do not have each other prevailed as dynamic, but mainly as static sealing elements.

Lippen- oder Nutringe stellen keine so hohen Anforderungen an die Passungen. Sie sind jedoch in der Fertigung erheblich teurer, weil die Dichtlippen in der Regel scharf geschliffen sein müssen. Außerdem wirkt ein normaler Lippenring nur in einer Richtung, während er den Druck, der von der Rückseite der Lippe ansteht, durchläßt.Lip or groove rings do not place such high demands on the fits. However, they are considerably more expensive to manufacture because the sealing lips usually have to be ground sharply. In addition, a normal lip ring only works in one direction while it lets through the pressure from the back of the lip.

—2— 109822/0788—2— 109822/0788

Beiden Dichtungselementen ist gemeinsam, daß der beim Pressen entstehende Grat sorgfältig entfernt werden muß. Beim O-Ring liegt der Grat wegen der Formtjrennung normalerweise an der Stelle, an welcher der Ring dichtet.Both sealing elements have in common that the one produced during pressing The burr must be carefully removed. By the O-ring the ridge is usually at the point where the shape is separated which the ring seals.

Neuerdings werden Elastomere in zunehmenden Maße nicht mehr in Formen gepreßt und vulkanisiert, sondern mittels Schneckenspritzmaschinen über Düsen in halbteiligen Formen gefertigt.Recently, elastomers are increasingly out of shape pressed and vulcanized, but by means of screw injection machines Manufactured in half-part forms via nozzles.

Der Erfindung liegt die Aufgabe zugrunde, ein in der Passung anspruchsloses, bei kleinem und großem Druck zuverlässig dichtendes und billig herzustellendes Dichtungselement zu schaffen.The invention is based on the object of an undemanding fit, to create reliably sealing and inexpensive to manufacture sealing element at low and high pressure.

Die Aufgabe wird gelöst durch ein elastisches Dichtungselement U-förmigen Querschnitts, welches so profiliert ist, daß zwischen zwei dichtenden Erhebungen eine ebene Fläche angeordnet ist. Die Formteilungsebene liegt in vorteilhafter Weise quer zu dieser Fläche.The object is achieved by an elastic sealing element of U-shaped cross section, which is profiled so that between two sealing elevations a flat surface is arranged. The molding plane is advantageously transverse to this Area.

Damit das erfindungsgemäße Dichtungselement auch bei niedrigerem Druck und groben Toleranzen dichtet, kann es vorteilhaft sein, die U-förmigen Dichtungslippen in bekannter Weise zu spreizen bzw. schlank auslaufen zu lassen.So that the sealing element according to the invention also seals at lower pressure and rough tolerances, it can be advantageous to use the To spread U-shaped sealing lips in a known manner or to allow them to run out slim.

Die mit'' der Erfindung erzielbaren Vorteile bestehen besonders darin, daß die in Mehrfachformen durch Spritzpressen erzeugten Dichtungselemente bequem entgratet und in Nuten ,Einstiche und dergleichen eingelegt werden können, welche grob toleriert sind. Bei kleinen Drücken dichtet das Element infolge seiner Eigenspannung, während bei größeren Drücken die Anpreßkraft proportional dem Druck ansteigtThe advantages that can be achieved with '' the invention are in particular: that the sealing elements produced in multiple forms by injection molding are conveniently deburred and in grooves, recesses and the like can be inserted, which are roughly tolerated. At low pressures, the element seals due to its internal stress, while at higher pressures the contact force increases proportionally to the pressure

Ein Ausführungsbeis-piel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Die Figur zeigt einen Querschnitt durch das Dichtungsprofil.An exemplary embodiment of the invention is shown in the drawing and is described in more detail below. The figure shows a cross section through the sealing profile.

Das im Prinsip U-förmig gestaltete Dichtungselement besitzt zwei gleichartige Lippen I9. die leicht konisch nach außen verlaufen und sich beispielsweise gegen die Wandungen einer Nut, die etwas enger gehalten ist, anlegen. Die dichtenden Erhebungen 2 ver-The sealing element, which is U-shaped in the Prinsip, has two similar lips I 9 . which are slightly conical to the outside and, for example, lie against the walls of a groove that is kept somewhat narrower. The sealing elevations 2

109822/0788109822/0788

laufend von den äußeren Flächen 3 auf die umlaufende Fläche 1I. Der Preßgrat 5 entsteht in der Formteilungsebene, wo er durch Abreißen entfernt werden kann, ohne daß eine Dichtungsstelle davon betroffen ist.continuously from the outer surfaces 3 on the circumferential surface of 1 I. The Pressgrat 5 is formed in the mold parting plane where it can be removed by tearing off without a sealing location is affected.

Das Dichtungselement kann in seiner äußeren Form rund, oval oder beliebig gestaltet sein. Mit nach außen liegenden Rundungen, wie im Rezeichneten Fall, kann es auf Kolben angebracht werden, welche in Zylindern laufen. Ebenso gut ist eine Anordnung möglich, bei welcher die Rundungen innen sind, wenn die umgekehrte Dichtungsart erwünscht ist.The sealing element can be round, oval or in its outer shape be designed in any way. With outward curves, as in the drawing, it can be attached to pistons, which run in cylinders. An arrangement in which the curves are on the inside is just as possible if the reverse type of seal is used is desirable.

1 09822/07881 09822/0788

Claims (2)

Christian Bürkert
Inge1fingenChristian Bürkert
Inge1fingen PatentansprücheClaims Elastisches Dichtungselement U-förmigen Querschnitts, welches so profiliert ist, daß zwischen zwei dichtenden Erhebungen eine ebene Fläche angeordnet ist.Resilient sealing element of U-shaped cross-section, which is profiled so that a flat surface is arranged between two sealing elevations. 2. Elastisches Dichtungselement nach Anspruch 1, dadurch gekennzeichnet, daß auf der Fläche H die Pormenteilungsebene liegt, so daß dort der Preßgrat entsteht.2. Elastic sealing element according to claim 1, characterized in that the pore division plane lies on the surface H , so that the press burr is formed there. 10982 27078810982 270788
DE19691957650 1969-04-05 1969-11-17 Elastic sealing element Pending DE1957650A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE19691957650 DE1957650A1 (en) 1969-11-17 1969-11-17 Elastic sealing element
FR7011723A FR2038269B1 (en) 1969-04-05 1970-04-01
GB1265234D GB1265234A (en) 1969-04-05 1970-04-03
GB4726670A GB1311536A (en) 1969-11-17 1970-10-05 Sealing element
CH1660170A CH508152A (en) 1969-11-17 1970-11-09 Elastic sealing element
FR7041006A FR2069498A5 (en) 1969-11-17 1970-11-16
US00090586A US3768819A (en) 1969-11-17 1970-11-18 Elastic sealing gasket

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691957650 DE1957650A1 (en) 1969-11-17 1969-11-17 Elastic sealing element

Publications (1)

Publication Number Publication Date
DE1957650A1 true DE1957650A1 (en) 1971-05-27

Family

ID=5751288

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19691957650 Pending DE1957650A1 (en) 1969-04-05 1969-11-17 Elastic sealing element

Country Status (3)

Country Link
CH (1) CH508152A (en)
DE (1) DE1957650A1 (en)
GB (1) GB1311536A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4407516A (en) * 1982-12-13 1983-10-04 Acf Industries, Incorporated Pressure energized sealing connection with annular seal ring

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE450653B (en) * 1985-02-14 1987-07-13 Skf Ab PROCEDURE FOR AVOIDING OIL LEAKAGE WHILE LOWING
DE102007056292A1 (en) * 2007-11-22 2009-05-28 Helvoet Pharma Belgium N.V. Seal ring for e.g. inhale device, has form separation points formed outside cross sectional segments such that ridge is related to movement perpendicular to level without contacting to housing part, during attachment of segments at part

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4407516A (en) * 1982-12-13 1983-10-04 Acf Industries, Incorporated Pressure energized sealing connection with annular seal ring

Also Published As

Publication number Publication date
GB1311536A (en) 1973-03-28
CH508152A (en) 1971-05-31

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