DE7442067U - SEALING SET - Google Patents

Description

This concerns a single and / or double-acting seal, in particular for a subscription between the cylinder and a single piston or a double-sided piston. a guide and a linkage of a working cylinder or d ~ l. , v.'orei the piston or the linkage rrit a reciprocating , rotating or corbinated "^ r. isev.'efur.r- ^ np.driven. The piston separates crboi zvei Tviure, from which v. ' At least one primary pressure: stands. Servant piston can be free or ^{coupled to a power transmission, ~ «r r} * 3f c -.> t · ί! η> ~ 2. The innovation; allows au ^r .- rdor an eir.fpch v / irkende secure seal on the Ausrar .: "eir.s3 Oest ^ .nfes eines Arbeitszylinders?, v. ^r een Ge: t> rr * -? and his leadership.

The already existing sealing devices for the same purpose can be divided into three categories. The first uric simplest uses an inner or outer di entring, - ^ 1-- ¹ ISr is held under pressure by the force exerted with the help of a rectangular or ouadr ^ tischen packunr or insert, v: obei the dimensions of this package of an insert ferin. ~ er than who the poetry are.

ZoL of the second version is ur _; ., V ^r elk .ufere guide ir ^ srir.fe rit square or rechtv / inlclirer cross section having seals which eir.e Eir.lare rit an approximately dreiecV'irer: asleep Quorschnittsforr, vrobei this one-in-ο .- " icr.t ir Perrhrun "· rit of the surface to be sealed '", -:'". r.-rir .-" · r? il "r-ezielie rir.re daz ^T .-; ijcher.lie ~ en.

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Finally, in the third category, there are sets, which a centric or knightly yielding one Inlay for one touch rit the surface to be sealed have, v; obei this inlet through two ducting and guard rings, each with a rabbit or the like. Protrusion is provided, the inner profile of which is in contact with one of the sloping flanks of the p.ittlersn Insert in touch: can be brought. Such embodiments are e.g. in French patents 2 Ο85 Ο86 and 1 533 60? described, the latter of which corresponds to the USA patent 3 ^ 73 8lü.

The sealing device "f.jer * ·" /? the losing innovation allows the realization of a single or double-acting set similar to the one described above third category, which in a single recess can be brought in and the risk of pressure surges or

- bsllur.eeη grazes. The seal contact should be central and the seal should not be divisible. ^1st she was under the pressure to relax. The effects of diesel fuel, that is, the dangers of explosions due to dynamic effects on the air and oil vapor, should be avoided, as the set gives a high level of reliability and operational safety.

In addition, the gasket set according to the innovation is the input mentioned type above all characterized in that the seal is composed of a flexible Insert or the like. for a pressure distribution, a centric or middle contact ocer that is kept under pressure 3lchtring and at least one guide and Guard ring, its nose or the like. Fit one of the end faces or flanks of the sealing ring can be brought into contact.

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niese Dichtur.fofp.rnitur differs so vresent- _I from the? .p next corrrencler. known design jhrunp-3-forr.en through the addition of a contact hz, w. Sealing ring, vrelcher pressed together by the middle indentations isc and in contact with the nose of one of the guide rings kor.nt. This sealing ring is useful made of a material whose faupe property it is to be able to easily adapt to the profile or a profile change of a cylinder and on the other hand have a very low coefficient of friction. Thanks to this ring is the seal according to the innovation particularly interesting for firings and deflections at great speed.

For a simple assembly it can be useful if v / at least the deposit or the like. and / or inserting the guide ring zuip into a laterally closed one on both sides Recess made of elastically expandable material. You can then use the side limits of the recess shifted by corresponding deformation. ground and then sit firmly inside due to their elasticity such a recess. The support surface of the insert for the sealing ring can be in the functional position at least approximately at the same level as the upper band of the lateral boundary wall of such a recess lie j so that this sealing ring · after the introduction of the Insert can be brought into functional position with practically no deformation. He then becomes through his Flanks acting on guide rings secured.

The deposit or the like. can at least one of its supporting surface for the inside of the sealing ring outgoing, at least tapering flank in the functional position have which a correspondingly shaped contact surface 7 of the guide ring or rings or the like. reaching under or over can.

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In an al., - * ev; some advantageous embodiment, the riaohfi.ebi ~ e insert or d, rl. at its BerUhri'l.'lehe of the Dichfcrin ir.it;. · f ^- CF sr.vVoerlicTor.dc- side having an annular recess vrelche sine use of this seal at very low ceiling pi t allows best ^ Jirkunnsf.rGd . In fact, k-inn ran the edition- b ::: · :. Contact force de :; Dense rin ~ jö reduce.

Now, the i ^T euerun- ~ rit is her her ηIs vesentlich zuzuhörenden detail by a xheratischen Zeichnunr in rehreren From f, "hrun ^ sbeisOielen but velche no Desc & nkunr the"> uerun - form to the illustrated examples, nor n-'iner described. It shows:

Fip.l ei? ^ΐΛ η section through a harvested execution runcsforr. one double v: irkencon dich-

if.2 a section through a / \ bv;? ndlunf; the Execution forr p-on? .5 ^ ip.l.

ip.3 a further execution form of a simple v / acting poetry.p · and

a partially ^r view of a riPuerunjrsreräfien Dichtunjrsgarnitur_ else held in section. Cups in an Ausnehrunp: a piston is rontiert.

The device ger.äß the Meuerunf possesses for the contact Put a pin on the surface to be sealed from a single material. whose main property it v; i? already mentioned, it is very easy to adapt to a profile or a pro-

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■ / 5

* * _ L \ * ~ - ~ ' ~ - ~ L ^ "~~ C" ° * "r — ι- · ς ^« ^ .- ΐ) "p ■ ^u ο ν £' i '' c *" e " ^ ^ ^ * '3 S e ^ ZIA ΚΟΠΠίΤ. "^ r" u "i C * 7 ~ '" C ^ ¹ ^ ~ *? - I ^ ~ - f3 · ^ i * "e" ~ S ^ h "*** ^ i ° C '^ j Ti ¹ H ^ eib U'" l -TS · --Oe f I i ~ ~ 'ortir "i: 'infLir (^ - ^; qj_ ^: ι;'i'ir'-i * l'j- ³ A * '''i". ^ "!» "^ - Po] _v'" · t ". hvlsn).

this Di chtunrsrir. '■ 2 is curch a "ip.lare 1 a.us nach_-i ^ b:?" cr * "er> 3toff ürerfanfen hi-, untei'le ^ t reh" lten ur.c: ξ · ·. · Γ-.γ be U ^ t in the crueklOoer state. This Einiare 1 st "~ zt sic ¹ :; ^ on the cruno of the iusnehrunf 19 (- ■" ir -.-): c ur.c 'ir meets their working force through their knightly look) 5r: '] ^: Hole 5 on the inner cylinder surface 9 de: -. ? .ir \ fe3 2, by the tightness- through the ^? . ^: uPere surface i '! The latter is ensured.

For a / '. he.iPt, it contains no recess 5 or rit other '.''places, its footprint is ("or ^ ilinir and tortures the profile H - ^ a. This seal is free in its /'usr.ehrur.fj rontiert and the guide rings 3 made of hard material with a rod coefficient of friction (especially "ion ^r : eT'e acetal resin) have a nose 16 or a little soft rit on the flanks 15 of the pin in contact. ; - brir. ~ h »r are. The flanks 6 of the F.inla-'e 1 can be attached to the inner ^ erührur.rootelle 7c '^^ guides.

Menn garnish zv / regard Oer \ '.'andunren a cylinder and einas in äiecerr cylinder Ploi tfäh.ir r-or t FOURTH. Piston "" arranged iot, ii. ^ E axis of rotation is the axis " ~ ' ^Λ ' f-or. ^ If · 1 · V.'enn the set n with the right cross-section for sealing the Au: 3" on "it a G ^ ^'t:; p. ' ^Door door; of a work tszy] indei's od.cr.l. provided \ vt, ihro! 'rehach ^ e dio Ach ^ e Al- Yl r.crr'lP: Fin. I.

This set can be simplified Γ '? ~' - Fir · ^. '-'c ^{1 r} - ''^ same insert 1 and the;'; j.chtr Ln _; - 2 ringlet, wo,] ■! ■ '] och die "iihrun ~ s Γ.1 ;:" ° 1 odor -fl'"chen3r>/erkle'.r.ert or νί; · - k '' : rzt are. Di ^ sc Au ^ i'fiiirur. r: - '. i'ov ·· is b ^ π or: the "advantageous

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for the arrangement in pneumatic cylinders with an annular recess 5 (Fig.l) in the insert. This recess 5 allows a prevention of the pressure force of the sealing ring 2, so that a clearly higher efficiency can be obtained. When choosing the rings 3s according to FIG. 2, the piston can swing or float slightly, there. the guide parts are supported solely on the flexible insert 1.

In the exemplary embodiment according to FIG. 3, the seal is in a simplified, .sleitform · with only one single guide ring 3 shown for a single-acting function. The guide ring, 3 is identical rdt the above also v / ie the sealing ring 2. On the other hand is the deposit Ie reduced, ur> adhere to the new '-' had to adapt.

In Fig. ¹ ! an example of a Hontsr-e is shown on a one-piece piston. The neiierungsrer ^ ße seal can namely v / earth mounted on a piston mat laterally closed recess in the following way: The middle or. r, Entriscrie insert 1 made of flexible material can be introduced into the recess 17 by deformation. The sealing ring 2 can then easily and naturally be brought into its functional position. Its inside diameter is large enough to be slipped over the side handles 20 of the recess 21.

As for c ^: .e Füh run low 3, they become r.ontiort by deforration, with their inner. Profile 7 as P.arpe or pitch · f "ir expansion by pressure on clie outer ^PchrV.gfl:; .chen of the piston used v; v ird ^Practically, so iton ^the.:.? Oc'rir'irfl 'uPeren" ch "-p. cos Kolbons the .7 guide rings 3 and cioren inner S chrög flat 7 atir '' stripes etv / ns. These f.inre 3 reach their inner

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Surface 11 immediately in contact with the. Section 21 of the piston when its rear side 12 has passed the retaining edge 20 of the piston. For dismantling the worn parts can then be slit or split, ur> the extractor, to make it easier.

In the Hontageform shown in Figure k Iran can determine that the flexible insert 1 in the Ausnehrung; 17 free bsv /. lighten the harness. Under the effect of a pressure P, the sealing ring will move. Support 2 on the nose 16 of the ring 3 via its flank 15. On the other hand, the insert is separated from the second ring 3 and the pressure thus exerts on the one hand a compression force F on the specific P.in ^ surface and on the other hand a multitude of forces F 1 on the eipten part 6 of the insert. These two forces are partly broken down into forces F 2, which are exceeded by the outer cylindrical surface 8 of the Kinlare 1 on the inner cylindrical surface 9 of the ring 2, which r.it with its outer cylindrical surface 14 with one in function r.it deir · pressure? growing force:? ft, to the cylinder wall 22 is pressed or ablieft. To the other p.leichzeitif forces F 3 of the NCHR pflächs ^ 6 of the pad 1 to the surface 7 of the Ferer: ^f iberliefrenden ring 3 Ubertrp.ppn. The: -. Nrosr; i.onökrnft of the insert 1 is transferred by its end flank 13 to the termination v; and 18 of the inner Ausneh-runr 17. D ⁿ r! ^: old of the ring 3 is secured by the inner of these flanks 12 on the return edge 20. It fol, ^r; t that the neuerunf, 3c; eräße Dichtunr allows Te.ilkrS.fte by the F 2 and F 3, on the one hand the Dichtripf 2 nit eir.or dnr pressure force proportional to ^ ^ r .ulop and npderorscits the R- in £ 3 over its cylindrical outer surface 10 rit dep, cylinder 22 in R ^ ührunc to ho] ton, v; 'i3 ^r "it andei ^ nn Viorten means, caßjjc higher the P ^ uck is, u ^rr so revirr the game 7.visehen the standing or bevrej-t-vn surfaces can be.

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In the event of wear and tear on the moving 3 I: ar.η 3ich a slight play between the inner diameter of the shoulder 21 and the inner cylindrical diameter 11 of the ring 3 set. This could create the risk of an outlier between these two parts. But since these parts are arranged in relation to each other in a locking manner, this risk is particularly low, since the length of the tavern ¹ , or guides 6 of the insert 1, allows a regression or new formation in the event of slight damage. In fact, tightness could be achieved without a seal if a moving part could be ironted into a cylinder without play. This is the principle, soft HISR is realized ₃ for di ^ Squeeze Guns or exemplary ran · gap that could form between the surfaces 10 and 22, is constantly or kept closed and, the higher the pressure stiffens so as lower w ^; : re a possibly existing game.

The Neuungsger.äß Dichtunpsgarnitür can be advantageous Way in the realization of all hydraulic working cylinders, be they double or single acting, both for very high pressure ranges and for pressures close to Null be used, which is a use in the same way allowed in pneumatic working cylinders, v / o the • ■ .'ii-kungs- £ rad is extremely important. On the other hand, they can also be used in Facilities r.it free piston for hydropneumatic ^ Pressure accumulator uses v / earth and this internally with a very high level of reliability and operational safety. All in the Description, the nac, the following claims and the. ". Eichnunp, shown f-'erkr.ale and construction details can both individually and in any combination essential significance.

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Claims (1)

Expectations 1. Single and / or double-earthed E. Notunpsgarnitur, in particular for a seal between the cylinder valve and a · flee piston or sviischen; iner guide and a. Stands of a working cylinder or the like, in front of the piston or the linkage with a reciprocating, rotating or combined motion; are driven, characterized by the fact that the seal is tightened, including a flexible Sinlap-e (I ₅ Ia) or dfi. for a pressure distribution, one thus f eh? ltciP.en under pressure, central or central contact or sealing ring (2) and vents a guide and walk. "" inf (3i3 ^), the iron cheese (l6) or dfrl. with one of the ftirnf 1 '^; chen bzv ;. Plan ken (15) the seal ring (2) in Poriihrunr can be brought. 2. Seal according to claim 1, characterized in that the Dichtrinr; (2) from ^ i η er '.'erk ^ tof f rit perin pem. Friction coefficient, for F, <? Istuel ' ⁰ US PoIytetra.f] .uer: ith; / len odor Polyi-thvlon consists. 7442067 05/07/75 3. Seal according to claim 1 or 2, thereby rokern net that venigster.s the F.inlare (1,1a) or the like. or the guide ring (3,3 ^) to. "Introducing in preferably Openings closed on both sides (17,21) consist of elastically expandable materials. ^, Seal, according to one of claims 1 to 3 · characterized in that the support surface (8) of the F.inlage (1,1a) for the sealing ring (2) in function v; initially ρ tv; a r-vS de. ' same Hö-. e v.'ie the upper foot of the lateral Be ^ renzunr ^ svrard (21) of an Ausnehrun.f ¹ ; (20) lies. 5- Seal according to claim according to one or more of claims 1 to 4, characterized. that the insert (1,1a) or ei ^ l. At least one of its Auflacefläche (8) for the inside (9) of the Dichtrin.fes (2) εΗεεθΙιε ie, at least in the functional position tapering flank (6) extends a correspondingly shaped, in particular conical contact surface (7) of the guide? rinpes (3 ₅ 3a) or dp;!. under or. overlaps. 6. Seal according to one or more of the preceding claims, characterized in that daP. the yielding one Insert (1,1a; or the like. On their dor contact surface for the sealing ring (2) opposite side an annular Has recess (5). Patentnnv .- ^ lt IWMl 07.0 ^ .75