DE1400589A1 - Diaphragm valve - Google Patents

Description

Dr. Expl. J

ΙΙΙΙΙΙΙΙΙΙΙΙΤ

PATENT ADVOCATE _ ...., _GÖGG1NGEN , ^ _{n 12} . _{7th 1961}

DR. ING. E. LI EB AU * BAendorff-StraOe _ϊ0

Telegiv-Adr.s ELPATENT

Posfcdiedckonto ΜϋπΛβη 86510 phone 33795 1400589

κ. '. ·. ■ λ ^ t ~ i ^ i. Requests from T «rra! Nsaründen na dim. Deutsche Bank AG * RL Augsburg ^ -

Account 83419 M

Er.Lb.vv «ti. ~ 4258

Dr. AIfons ICnapρ

B i b e r a c Ii on the Siß

Bleicherstraße 3 {Germany)

Il membrane valve

Ss i-as- and Flüüsigkej tshähne are known, their seal c? .is consists of a flat membrane pressed at the edge, whose middle area ir.it de ".: seat of the i-junction" of a line 2U.samr. «M. 'Works. '..' when the membrane is closed off from the sun deformed in scorn, it is subject to stretching, v.-o through them tear or suffer a permanent change in shape ks.nn, to prevent theö, need for the membrane very soft, unreinforced materials are used, and v «r: vltly large diameters and short strokes are selected so that such and are unsuitable for higher pressures and delivery rates. On the other hand, the lack of an active, the Ieaibian lifting force when the diaphragm becomes dislocated. has formed that this is lifted by the pressure of the liquid,

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what makes this "taps also unsuitable for very low pressure levels · Its more favorable mode of operation - can be achieved by using a bellows membrane that is easier to move"; in-this]? but the night hobs ¹ he production costs of these ^arise; "Membrane that has to be cast individually because of the compli-"alerten.Gestaltung; In addition, there is the impossibility of providing an effective bearing for this type of membrane for operation under high pressure.

Due to a by the German patent Er. 806 507 known Bauwelse is in a membrane tap of the first-mentioned type uses a membrane with a larger diameter, as her seat so that she. after their attachment a * porm anninant, with the middle surface and the outer palm roughly flat and a ring-shaped transition zone between is bell-shaped, the latter deforms until it is turned inside out, when the tap is closed. Around To be able to take on a relatively complicated form, must the originally'fla, ch designed I-Ierabran-experienced a stronger change in shape, -which it is subject to higher tensile and bridge loads that occur more strongly at individual points? it must therefore have a higher deformability, and especially

■ be particularly good stretchable and compressible, so that they In its structure must not be strengthened if it is a

■ 'should withstand sensitive high pressure alone and for that

a relatively complicated movable abutment must be provided for the rear support of the membrane. ■ · ■ Ϊ09805 / 0015 _BAD0RIGINAL _ ■

1400588

The present invention "relates to a rj © as and liquid faucet of the specified type, / in welateem at least one of the circumferential rims that hold the membrane has an inclined relative to the limb axis To subject tensile and compressive stresses to causing an initial deformation in the same, namely in such a way that it has a bowl-like shape without strongly curved points and with the hollow side facing the sealing seat; when it is cut, this bowl-shaped membrane is pressed against the sealing seat , whereby their thinning is reduced or reversed and the shut-off is achieved without the material experiencing any expansion, while a i'ederr-ae force arises in the membrane, which causes the Ζ τΐίο ^ν 3 :: Ί-: ;. ρ · ~ Π s the same in dieAusgan _w ssteilung safeguards once the barrier stops the diam ..- pt of Kerubrari can also at greater stroke is small n and their material bra ^ cut practically elastic to aein, such as plastic, rubber reinforced with canvas, leather, plastics in the manner of tetrafluoroethylene and the like; the membrane can be flat and possibly punched out of a plate, and its shape is thus economical and economical. : n der .Ilfrstellungj on the basis of the ^ eometxically simple öchelenroiin the i-membrane, na-n can provide a complete od'or: ast complete ^ ea v; i'de ^: ila7: er

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and the whole faucet can be constructed of suitable plastic, with the exception of the. Iletall parts. Finally, the design with very incised generators of the parts clamping the membrane guarantees effective clamping of the same, which makes it possible to screw or unscrew the tap head if necessary without a wrench, which makes it easier to replace the membrane - creating a fluid valve is realized clearly that all Geesthacht hurry the known Kembranhähne can be avoided by applying the present Eriindung, which comes in various Bauausführungen for use on very large areas in question, ^one economical to Herst · 'is Settin g and above also offers other advantages.

Among the many forms, n:, ch welc «n n: earliest one the circumferential border in: frame of the idea of Eri'inciun ^ s can be designed, they can in particular have conical, spherical, beaded or similar surfaces.

Just to make the invention easier to understand and without any limitation on the same // grounds some Embodiments of the present invention in Veiglejch to known membrane types in the accompanying drawings: ldert.

ORIGINAL

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demonstrate: "

Pig. 1 and 2 two known types of membrane, namely

flat or bellows-shaped; Pig. 3 and 4 a membrane built in according to the invention

in open or closed position, Fig. 5. the longitudinal section of one applying the invention

Liquid cock, Pig. 6 to 8 modified porms of the membrane, which the

correspond to the design according to the invention,

3EI the known flat Kembranen (Pig.- 1) is a M-1 embran forming flat disk, held on the ο TJmfangsrand between an upper and a lower part 4 having planar Plächen and is arranged at a short distance from the Diclitungsaitz. 5 In order to shut off the seat 5, the membrane 1 must of course assume the Porm shown in broken lines and expand accordingly.

In the known bellows diaphragms (Pig. 2), the diaphragm is installed practically exactly as in the first Pail, only that it thanks to the shape of the bellows, it is not subject to expansion} other disadvantages caused by the complicated shape of the membrane look noticeable here, however.

According to the invention the membrane 6 (Pig. 3) attached to its hand between a top 7 and a bottom part 8, instead of the successive flat surfaces fitted .. 809805/0015 _{BAD 0R1 (älNM..}

Have surfaces with oblique generating lines, which belong to a cone, a sphere or another suitable body of revolution, so that the between membrane 6 attached to them assumes approximately the shape of a shell with the hollow side facing the sealing seat 5, without creating strongly curved spots. Of course, the membrane 6 can originally be flat and only take on the shell shape after being forced to do so by the said fasteners; but it can take the form of a bowl right from the start have that it retains after attachment without

that it is subjected to significant stresses.

To shut off the shell membrane (by hand or with any mechanical, electromagnetic, pneumatic or hydraulic means) pressed against the seat, with its curvature flattened or so ^ ar everted until the desired reduction or complete shut-off of the flow is achieved, whereby the membrane does not stretch or compress any noticeable, but only has to endure bends with slight bulges. (Fig. 4)

The tap according to Figure 5 applies the idea of the invention i. _: . and has a membrane 6 ' which is supported on the conical' edge 8 of the housing 9 of the Hahn.ens, which - is connected to the nozzle 10 and the diehtungssitz

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BAD ORiQJNAL

contains, which communicates with the nozzle 11, -wherein the nozzle can serve both for the inflow and the other for the outflow of the operating medium (liquid or gas) that is to be regulated. Ah ₁ . Housing part 9 is screwed on a head 12, the surface 7, Q ^{ie of which is} hemispherical, presses the membrane all around against the edge 8 and at the same time forms a Yfiderlager for it. On the basis of what has been said above, the head 12 can possibly be screwed tightly onto the housing 9 by hand, that is to say without the aid of keys or other devices. The threaded spindle 13 of the cable 14 is screwed into the head 12 and is provided with a freely rotatable plunger 15 which acts on the membrane. The way in which the cock works is readily understandable on the basis of this description.

If it were necessary to close the membrane at its center point, which acts as a sealing seat . _s can enhance loud i; 'ig. 6 as a z. For example, flat disk 16 can be built, from the center of which a reinforcing thickening 17 rises, similarly the flat disk, according to FIG. 7 _f , can be reinforced with a built-on disk 19. Finally, ^{according to 33: 1} ^ 8, the reinforcing part 20 on the membrane 18 can also be considerably high, if it were appropriate

the L abran in larger ibs -'- j.nd from the sealing point i «

BADOFHGINAL 809805/0015 _ _c

to be built in.

Thanks to the fact that the membrane is only subjected to flexural deformation in the application of this invention, but not to elongational deformation, it must be flexible, but it does not necessarily have to be extensible. It can therefore consist of rubber or a similar material. Oils can be reinforced with one or more layers of linseed

wall, wire mesh or the like, which in their mass or to. incorporated into its rear wall or otherwise connected to it. The reinforcement layers form a base which enables the membrane to withstand higher pressures even if the support of an abutment is not provided for them. A similar effect can also be achieved by inserting at least one layer of the sealing material that forms the actual membrane between the conical or similar surfaces of the tap and one or more layers of canvas, wire mesh or the like as a base.

In order to increase the sealing effect at the fastening point of the membrane and / or to hold the edge of the membrane more firmly, especially at high pressure, the conical j ο know. . ä fastening - / hen th or Erhebun ^ or at the en_ s with hats one side and matching Erhebun £ r.:it annular ITU -. n you ^{r Z>} ^ te enspi trained v / srden.

BATH

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For the same purpose and also for reasons of manufacturing expediency, only one of the fastening rims can be designed with inclined generators with or without ring-shaped hats, while the other, flat, round or otherwise trained hand has a slightly smaller diameter, so that the membrane is forced to assume in this case the form of a .Schale but along ^r and, therefore, takes place the attachment of a smaller surface area with increased pressure.

It is clear that the embodiments "in practical Realization of this invention compared to the Eei- -play in * scope of the invention always as far as possible can be modified. In particular, it is taken for granted that the average of the tap flow and therefore also a different membrane than round Shape, thus approximately oval, elliptical or the like. Can and dass'dann the housing shelves for fastening the membrane must also have a corresponding oval, elliptical or similar shape.

ORfGINAL - 10 -

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Claims (11)

Patent languages 1. Tap for liquid or gaseous equipment, for which a deformable membrane with a sealing seat together ■ acts, characterized by g-e that at least one of the circumferential rims (7, S), between which the membrane (6) is held, has a surface, whose generatrix is inclined relative to the axis of the cock ■ lie so that the built-in membrane in the resting state has the shape of a shell with facing the seal seat (5) Hollow side and without strongly curved points and no significant stretching or compressive stresses is exposed. 2. nahn according to claim 1, thereby geke.nnzeiehn e .t that the two circumferential rims (7, 8) between which the membrane (6) is pressed, - mating surfaces have their. Generating diagonally opposite the Ilahnenachse lie. 3. Tap according to claim 1, characterized in that, "· · the net that one of the two / membrane (6) holding, Circumferential rims (7, 8) have an area opposite the tap Axis inclined generatrices, while the other peripheral board has a slightly smaller diameter 809805/00 15 BATH 1400588 ale the first. 4. Tap according to claim 1, characterized that the membrane. (6) is flat and the shape of a shell by the clamping between the Fastening rims (7, 8) with inclined generatrices assumes without any appreciable stretching or pressure stress must be subject to. "" "" -. ". 5. Hahn öaoh claim 1, characterized that the membrane (6) is made in the shape of a bowl, the edge of which has approximately the same inclination the generatrix of the fastening rims (7, 8). 6. Hahn na <jh one o & kx several of the above claims, characterized in that the fastening part (7) for the membrane (6) as a counterpart to the sealing seat (6) is designed as a liohlkugelige shell and for most of the membrane surface forms an abutment. 7.Hahn according to one or more of the above claims, characterized in that the membrane (6) consists of a relatively rigid. "" Consists of material, such as Ha .. t ^ Hsai, leather, plastic of the type of tetrafluoroethylene or the like. _8AD 809805/0 0 15 8. Tap according to one or more of the above claims, thereby ge. indicates that the membrane (6) consists of a material, in its mass or on its surface canvas, wire mesh - or a similar one flexible, but practically inextensible layer is installed, which makes the membrane resistant to high pressure. 9. Tap according to one or more of the above claims, characterized in that the membrane (6) by laying two or more layers of different materials on top of each other, of which at least one made of canvas, wire mesh or similar flexible, but practically inextensible Y / er material. 1C. Tap according to one or more of the above claims, characterized in that the membrane (16, 18) has a reinforcing thickening (17, 19, 20) in its center, which is connected to the sealing seat (5) must work together. 11. Hahn-according to one or more of the above claims, characterized in that one or both circumferential rims (7, 8J, which hold the membrane (6) in place, have annular grooves or elevations, or hats and elevations that fit into one another, around the membrane (6) to hold tighter and to make the seal more effective. BATH ORIGINAL 809805/0015 12 * tap according to one or more of the above claims, marked by the fact that its Main parts made entirely of plastic with the exclusion of metallic ». QJeile are built. 80 98 0 5/00 1 5