DE1986299U - HYDRAULIC MAXIMUM PRESSURE VALVE. - Google Patents

Description

HA. 180879 * 3/27/88 j

O? 21 822 / 4-76 Gbm Miinch ^ fa ', the 2% resin 1968

- T Λ26

ALFRED TEVES GMBH 6 S'tankfurt / Main 8, Rebstöcker Str, 41-53

Hydraulic maximum pressure valve

The invention relates to a hydraulic maximum pressure valve with a pressure inlet chamber opening into a valve seat, one to the side of the valve site arranged outlet and a biased by a spring on the valve seat, in a cylindrical BöÜarung sliding valve body, which has an outgoing from the pressure inlet chamber central throttle opening, which in an am other end of the valve body provided, closed compensation space opens, the effective

Vo vz identification the same area of the valve body on the valve seat / larger is ala on the side of the compensation chamber.

Such valves are preferably used in hydraulic systems operating at high pressures in order to at

If a maximum permissible pressure is reached, connect the high pressure side of the valve to an outlet and thus avoid the build-up of dangerous overpressures ₀

Since oils AEEN valve seat rests effective Fläeh © © ■ the ¥ entilkörpers greater than the opposite © FLAE surface on the side of Kompensatlongraiiünes is ,, © opens in äejpartiges valve _s. i-renn <äea? The pressure was used as the "Feääerkraffcä" ^ iviäiert durchcJa the DifTereus del? bark effective Vejjtilkkörperseyf laugh - Fg-F ^ is- «

Ss see nus, .geseigt that feei
due to seaalt processes Draekstöß ©

Hdhe feet3? Äelitlicli Above the blow-off pressure ä © i »ia oils Eisgefeasfeen Maximalörmcicirentile 'lies «Soleli-e ..

twüten ■ & "B _e bei" - lowering and intercepting 4er I & sten, -von * Ff ontla4era ■ dureli- Ha »dsteaer« ag on ·. ways »of inertia 'of the b / et? egliöiieii part © of the? ..; known .Saxliaalöruckventile 'mad because of ier dimension © »- · ferägiieit. Öer Sen ¥ entilen eat - general - smG & ge-se & al». Teten Ölseille ia be ³ stroke line the open-'Ventile takes place _; with _a certain lerzö $ ®wwa.g _$ so that

among other things permissible. iiolie. Dpößke la dea?

■■ plant-aufbauen'ϊεδηηθη that fre- sum Plat sen components föiipen ₀ -. ■ .. "-""-.-. -

Target OCE invention is to provide a hydraulic Masiiaalö3? Uckv © ntils of the above mentioned type _a wel ~ elnss AUEB in the event kurser he üb pressure Tösse building unacceptably high pressures in the lines of Hydrau = "likanlage verbindert"

At the end of this task, the invention sees ¥ or. » that ■ dl © Uanaung ies KompensafcionsraiiBies sraaaaa at least partially educated aacßgiebig. is-fc «Bisreh this MaBaaha ©

nd
the federpaohgieblge part dez ^j wall of the loiapes-

A Bruce Tobes immediately nachgebeiij something "safcionsi? Aümes leg appearance, after which the pressure in the Kompeasatioasraum drops abruptly * because by the EFOsgei & anal only laagsaia liquid aur complement dureii the Off · * weieiiea the 'wall enlarged ¥ oltiaen.s na.Gh & t ¥ & w can ®n * Consequently, the Öfftiangskraft acting on the Yentilkörper while considerably increased. ₉ to äes JDrosselkanal 'through a take Driielransgleicii

bat; · In other words, ... the ■ erfliadutigsge «= measure is developed © Maximum pressure valve in the case of © üee, occurrence of * - occurrence of * - | 3 ruptures already with .. something never Open the drselc ■ and- so the & ufba.n inadmissible -high overpressure avoid. ** Due to the increased opening force, the inertia is overcome faster than with the well-known hydraulic pressure valves.

In a preferred embodiment of the invention the compensation space is closed off by a membrane ^ behind which there is a closed pressurized gas space

In another preferred embodiment horn *, the Kosipans & tiosisrauia is closed off by a movable, fixed wall, which is held against the pressure of the liquid by means of eiae ¥ & ά & . same-sylinders ehen Soteuag. x? ie the valve body slidably arranged eil. Kolbea formed SeIn ₅ , who is about a Fedes? to © eliätise

the Haehström von Plüsslglteit d «P0h den -Dposselrauai in d © a. ICoffipensat-ionsraum still ..- further also .. yePsogerni -tiafafit. at elaef »i? eitereii lusfüiirungsforia d @ r invention - && Ds? © s ·

The upper end of the piston "" resting 'preferably to a 5? Ell-er _# on the edge of the spring rests "Here, the Seliäase öh n & seinj abgesehlossen by a Deekel to bottom check the different bearing spring st · ..' ■ ■

The Batas behind the fixed ■■ movable wall to ex? _o is the v-.A piston orgugsweise with the outlet in ¥ e2 ⁵ blndting _0, so that at a displacement of the movable IJand-.b zw -.- of, the spring force acting piston aMÄer zus'ätalichen no compressive forces.

The invention will be described in the following example with reference to the drawing; in this show?

Fig. 1 shows a longitudinal central longitudinal section of a first embodiment of a hydraulic maxi = · malö ^ uelcventils according to the? Invention! ■

Fig. 2 © inseematisclien mid-cell section of a second embodiment sines hydraulic IlaxisaMriickireJitils according to the invention ^ and

Fig * 3 shows a longitudinal section of a ©! ³ © tias aögewaadel «· th embodiment of the Ö ^ out-

lis ohen laxiaaldi * ucli ¥ eat 11 s.-

Ia all figures in the drawing are corresponding to © Element © t o the same reference salile identified ^ elelinet "

'■■■ - ■: - ■ three ■ -. ■

In the valve housing: 1st at all "/ Attsföiü? ImgsföKaeii

A pressure inlet space is provided, - & possibly to the 'loche der durch'-the Maslmaldytiekvenfeil- zn sehlitsenden

Attachment is attached * The pressure 6. © Lindet. in elnera Yeritilsitz-13 »on the © in one Brue & fedtenp 12 downwardly biased valve body 1 calls * '. ■■■■ .. - ... ■ '■ - ■. ...; '..

Seitlieb is located in the Öehäase 1 © in outlet 14,.

uiwch can flow to the hydraulic system present in the liquid _s when the valve body is moved away by a 3 BifelMgen over-pressure to the top of its Sits "

The upper ¹ of the EeIl .Yentilkörpesss 1st cylindrical and slides in a cylindrical bore

In the valve body 3 there is a throttle room 5 which is a connection between the Driiefcp & iia β and one over, the! Texiti! body! Compensations

The upper effective area F _{1 of} the YenfcilkS ^ peys-. Is smaller than the lower effective area. _{F? E} Aufgrunfi this embodiment, the ¥ © raises ntilkirper 3 from its Sita äannj 13 when the pressure in the pressure-EinlaßratM oils 4p force spring 12 'divided by the Flächendifforen? Fp-F ₁ "Overlooked, -

In the form of pleasure, like Pig «. 1 'you support B'ieh die DruciEfedes 12 at the top of a projection 20 of the housing Its underside extends: "extends into a recess" 21 lii dem ..V @ ntilk8rp.er''3 "j- so that this' against his seats 13 is pressed.

never top of Kosnpeiisat.ionsrauiaes 7 is closed by a diaphragm i <S *, behind which there is a closed by a fixed cover 22 compressed gas chamber 17 is "The pressure in the gas space IJ arises as an _a that equal to the membrane from both sides Pressures are effective

now touch the valve body. If there is a pressure surge tilFktj from below, it is established through the throttle duct 5 and the corridor space 7. the membrane Io .fortj which evades and thus below a pressure drop in! Compensations · raisa 7 introduces _a da Flüssigkeitsvolu ^ x by öen throttle channel 5 only langsaai naehströmen kaniio Off 'öiesem © round tjird the iron down on the Ventillcörper 3 acting öff "nimgskraft On the kufas side, depending on the strength of the throttling, channel 5 is considerably increased * so that the opening is effected more quickly and starts before the highest permissible maximum pressure is reached .. ■,

In the Ausföhrungsform according to Fig. 2 of the TBxm is formed j through the upper part of the sylinörisefeen bore for the ¥ eBtilkörper 7 »The above © end of the grain ·» peasatIonsräumes 7 is closed by a sliding likewise arranged in the bore 15 piston 4 ^ to the top of which engages a compression spring 9 _s which aostütst above aa housing 1 *

In this version: the closing spring is 12 placed on the outside of the Yentil body 3 and in a Recess 19 of the housing accommodated «You support down on a projection 23 ties the valve body 3 away,

The operation of the device shown in Figure 2 ta _o substantially the same i iie the AusfühFungsfom oils according to Figo 1, wherein a sudden auftrete «« öen surge weieht the plunger 4 immediately aiu ^tt:? Cfc and _e. it takes a certain time ₃ bis hieräureh the resulting Volioi ^ iivesrgyößerung diircli Haahfließen, the liquid is compensated from the hydraulic system · Hle3 dux eh · again increased öfftrangskraft at the bottom 3 effective ■ _"?:

So that if the piston 4 dodges, see above Force of the spring 9 no further srasätsslißhexi pressure »

wlwkBBM are ^ can the lama ₉ . in which the spring 9 is arranged _{9 to} be connected to the outlet lh by a channel l8 »" -

The ÄusföhrMngsforB according to Fig. 3 differs check iron äew according Pig "2 by going into the einseliiere The" - position and further characterized in that _s Di oaselkanal 5?

© Loöhk & skade 5a is still switched on, which one increased throttling and thus longer stopping of the © rhöhfcen opening force causes «,

For the piston 4 and the part of the Obrem Yentilkörpers 3 is a special wide ³ Führungsbuchs® 2 ¥ örgesehen ₀

The upper Kn & e ö @ s piston k rests on a rope 8 at ₀ on fiessea JUißonrand the lower end of the spring 9 abuts

Whether on is ias ß © Misse 1 dui? Ch © inen cover 10 ab on the lower side the upper end of the conveyor rests,

Description .raacfafc dentlieh ^ that see that with slow pressure changes viie a normal Öt "© ycb?" ckv © ntil only behaves when there is no pressure there is an increase in the opening kilometers »-

Effect - of the '© rf.in accordance with-Masciaaldrus-kyefitH ^ st

.um 5 © feess © p _s the smaller the 'static valve is in the case of the ktäzornrnn des - .PruokstoB ^ s ». .Biese aJLss © lie «euB» when lowering "vöä hydraulically g © halt © aen Lasfeea

In jf'i ^ ur is 4; one visitors A-iöft & r \ mgsfo: em "d <> a meet Haximal ^ jrackveiitila shown," at ciex · des * outlet 14 isoaxial ram DinlaS 6 is ₉ so that

iasgosast ela® axial flow flow achieved ui2? € L ·

SSU this 2wQCk - * e ⁱ -feireä% s "- is xiei the valve body 3 IMD geMwsefesteai Haltertaagsteil- 30 _φ to the © r assial ₉ is disposed a. Siagkanai 29 Yorg © s © & © & · 4 © a HGltesimgteile 30 are distributed on the lisfaag

3Ί ¥ orge ropes 5 duroSi tfelclia des ·Einkaiial 29 old the outlet 14 vorbimdsn. is"

B © 1 of this guide foria wiM the 'mobillioli.e hand ©: ia @ a la 4 @ m Haltertsigteil 30- social 4 gQ-bil <3.0t, w- © lclier duroh ein® ®sller £ @ & ay- 9 a tsil 3 > ö -abgestütat is «"

BIe SüGlcstellfedör 12 for άβη? Entilköi? P © r 3 © rstajeekt de © Ttm-'cillmrper imd d © r Sellerfefei? 9 ·

ills Bes <mdeÄ © it is this AjQ. & tWexms ^ s $ o ^ m snsat®li <sk a © sl. © lae la d © a piston 4-arranged gate control on. Bi © s ©

ordered from eiasm ISugeXwstiX 2 ^l \ - _$ vtelGh® & © ia ©

I i

'i - 11 -

J [^ opening; 26 1ΰ \ Bodurt u <jj j- '. J _ · <-. /} ·

The iuruclcfeder 27 stuttii / Jl αα above eir.o AbsL> ü-0zmutter3iS · uaä a iiLas ^ ellscbLfcaitbs üö aa one with aera 2.οΓϋαη ^ feat

¹ * "OX ^v biand <" aßn Koplböil :>■!> .

Turning the adjusting screw 28 can reduce the preload i j tion of the compression spring 27 can be adjusted.

When the ball valve 24 is opened, a Continuous between the hem 7 and the outlet 14. Hi sr au are see in the head part 33 outlet openings 25 provided.

The ball valve 24 sets itself for a low passage

teit designed overpressure valve. It limits the pressure in the IUuai 7 »so that the closure member 3 opens when pressure times area at the lower end of the valve body 3 at 6 are greater than the pressure times the area on the side of the valve body facing the compensation chamber 7 - The spring 12 is very weak and is used for the Bruckless. of the system for applying the closure member 3 on the valve seat I3.

'. In the operation of the pressure surges is Ausfuhrungsfona ojoxux 7IG '4 is the same as that of the above-described Ausftthrungsformen _t that is, the flask. 4 at / Drucketö & en gives way and thus to a sudden ·· drop in pressure

'(.im KoürpertsatiosisrauHi 7 leads. In this way the

• v. ^. L ^ S & »^ a ^ W!» <! # ^. '■' ■■■. · ■ · -. yyy2l

· Ta.

saßia Sgas ¹ # sfeeafalls seMeller tdbbcL ■ at geajlsgereB Brackes as% ai asatiegea »"

Claims (1)

dr. MÜLLER-BORE dipl.-ing. GRALFS DIPL.-PHYS. DR. MANITZ DIPL.-CHEM. DR. DEUFEL PATENTANWÄLTE T 21 822 / 47S Gbm 25 * March 1968 Alfred Teves GmbH Sv - .0? 4-26 Protection claims 1 “Hydraulic maximum pressure valve with one in one valve seat .opening pressure inlet chamber, a downstream of the valve seat Outlet and one by a spring on the valve seat to pre-stressed, in a cylindrical bore. slidably disposed valve body, which one of the Has a central throttle opening emanating from the pressure inlet chamber, those provided in one at the other end of the valve body closed compensation space / opens, whereby the wall of the compensation space is at least partially resiliently resilient, which means that g e k e η η is characterized, that the movable fixed. Wall through one in the same cylindrical bore (15) as the valve body (3) Slidably spaced from it. Piston (4) is formed, which extends over a leather (9). at the . Housing (i) supported and.a stop acting on the housing having" " . - ο maximum pressure valve according to claim 1, characterized ge kV η η ze i c h η e t that the throttle channel (5) is known per se Hole cascade (5a) included. ; BRAUNSCHWEIG. AT THE CIVIL PARK 8 Ί? (O53I) 2 84 87 β MÜNCHEN 22, ROBERT-KOCH-STR, I ° S I081I1 22 BI IO Shape. 20 300O 6 67 Maximum pressure valve according to claim 1, characterized in that the upper end of the piston (4) on a plate (8) rests on whose hand the leather (9) rests O 4 <, maximum pressure valve according to claim 1 or 3? thereby g e ke η η ζ eic h η e t that the housing - (1.) above through a lid (10). is complete, on the underside of which the leather (9) is supported » 5 »maximum pressure valve according to one of claims 1 to 4,. .. thereby g e k e η η ze i c h η et that the space behind the piston (4) communicates with the outlet (18) » 6ο maximum pressure valve according to one of the preceding claims, thereby g e k e η-η ζ e i c h η et that the effective .. The area of the valve body on the valve seat is larger than on the side of the compensation space "