DE1934401U - STOP VALVE WITH BALL PLUG WITH SUPPORT FOR THE SEALING RINGS. - Google Patents

Description

MascMnenfaTarik Werner .BölHnei ¹ , -S-pro-eldi "öve.l / Wes.'tf _i -", ----- H ^: Ql3ergstr. 26

"ATasperrliahn with ball plug with HD support-

The innovation "refers to a. Stopcock: mit-zvfisohen all sealing rings seated:

It is "known that" in such shut-off valves the ball plug in the "bloek-like lined, connection piece having Housing must be sealed with the help of iron cover rings.

For this A "bdichtung" are already the; various suggestions have been made.,. ^{_":; ';.."} - - ~ _ I ^{-: ■:} -'.'-- ■ '■■

Thus, it is "beispieisWeiser THE ^ .1 050 ^ 623) Toekahnlv the seats for the sealing rings by bushes to" _s are formed or used in the linsatzmuffe Vfand the flow opening s of the G-ehäuses and their mutually facing

Bank account: Dresdner Bank AQ Herne 2436 · Postal checking account: Dortmund 558 68 · Telegram address: Bährp'atente Hernewestfalen / Babetzpat Munich

Center the end face of the ball plug. These support rings are designed so that they face the ball plug Surfaces are parts of spherical surfaces, so that the ball plug on these surfaces, the / actual seal slides Serving sealing rings are "arranged behind these sleeves in this construction.

It is also known to use the sealing rings in annular chambers and to close these annular chambers at least partially by centering bushes, on which the chick facing 'partial sections of a sphere' forming surfaces the chick slides (DAS 1 084 995) »

It is also part of the state of the art for such taps to provide groove-like recesses in the housing in which wire rings that rest against the chick are housed, each of these elastic wire rings through an im Clamping ring attached to the housing (see DAS 1 Ο $ 47β9)

An arrangement for shut-off cocks for maximum pressure is also known in which the sealing ring is in a metal ring is embedded, which is in engagement with the ball plug, but leaves so much space for the sealing ring that this can lie down on the ball plug (DAS 1 095 604) »

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All known constructions show a similarity, "at a metallic clamping ring or a metallic retaining sleeve is in engagement for the sealing ring with the ball plug. Stopcocks designed in this way are, however, "at higher levels Printing of the medium conveyed by them is now very difficult to run because the cock plug against this pressure the metallic guide surfaces is pressed.

It is also "already" known to guide the ball plug by using metallic centering or bearing rings to do without and instead to use the sealing ring made of flexible material as a guide element, which is supported only at the most severely deformed points, without this support the ball plug at any touched a place (üS- ^ atentschrift 2 373 628),

A point particularly exposed to deformation is the edge of the sealing ring at the inlet to the inflow or outflow nozzle, which at higher pressure loads on the cock first lifts over its stop edge on the cock housing and at an even higher pressure load is pushed into the interior of the nozzle so that it is captured by the medium flowing through the tap and the sealing ring is torn out of its seat, "- -

It has therefore already been done about the sealing rings to be fixed in this area by additional rings (US Pat. No. 2,606,738) "Tuck arrangement", however, is conditional a two-part design of the sealing ring and the associated clamping ring j, whereby the installation is comparatively complicated is, since one strives in general to form the sealing ring arrangement as one piece as possible. -

The innovation avoids this by the fact that the ring, which is made of flexible material, is between two housed in the ring seat, However, the ball plug is not used at any point touching metal rings and form-fit with the metal rings connected is »The connection of these three rings is expediently carried out by radially inserted through all rings Bolts o. -. ,

In another embodiment according to the invention, a metal ring has on the side facing the cock plug and on the side facing away from the cock plug on annular grooves, which with each other by a few, preferably extending in the axial direction Connecting channels-in connection »In these ring channels and in the radial connecting channels is the Molded sealing ring made of plastic.

Another, essentially equivalent to this embodiment

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lente embodiment exists. in that you have metal rings with provides radial, preferably aligned bores; where "at between these" two rings and in the holes a plastic body is molded, which rests with its sealing surface on the ball plug ".

The sealing rings according to the invention have, in addition to the gate part, a one-piece design of the sealing ring and its Support elements and the simpler ones with them. Construction of the tap housing the further advantage over the "until now laei rejection of the "well-known supported. constructions used plastic sealing rings that are also comparatively high pressure, of the medium conveyed by the tap, no parts of the plastic ring over the seat edges Press into the flow channels and nozzles, thereby the Narrow the flow cross-section and replace the Sealing material impair the tightness of the tap »In addition, the innovation has the advantage that the in the case of metal overlay, there is no pretensioning due to the elasticity inherent in the plastic in the case of the innovation Sealing is guaranteed in any case.

The drawing shows exemplary embodiments of the subject of the hiring , with three different embodiments of sealing rings are shown in a single figure.

In the single figure, 1 denotes the tap housing, which has the inlet and outlet channels 2 and 3, which merges into a larger cylindrical barely 4, in which the ball plug 6 provided with the flow channel 5 is accommodated. The ball valve has in the upper part of its spherical outer face a notch 7 for engaging a threaded spindle on a not shown shaft to _s outside a handle or knob for actuating the ball valve is seated on the * When in the reproduced on the right side of the drawing, embodiment of the According to the innovation, two rings 10, 11 are provided, between which a plastic ring 12 is arranged. The ball plug therefore only touches a plastic surface, while the rings 10 and 11 are used exclusively for support. A row of radial pins 12a arranged over the circumference connects the three rings 10, 11 and 12 with one another in a form-fitting manner to form a fixed unit »

In the illustrated embodiment, in the upper left corner, a metal ring 13 is provided which has the _T in the axial direction, some channels fourteenth This ring body is provided with a larger annular groove on the side facing the plug 6 and has a somewhat smaller annular groove on the side facing away from the plug. Both annular grooves are connected to one another via the channels 14, the cavities thus formed

are filled with a plastic cover 15.

In the execution form,. like them in the lower left corner The drawing is reproduced., Two metal ring bodies 16 and 17 are provided, which extend in the radial direction Have holes. The "two ring bodies 16 and 17 are connected to one another by a plastic body 18, which also forms the sealing ring. By reaching into the recesses in the ring bodies 16 and 17 Plastic parts, the entire ring is combined into a solid unit.

Protection claims

Claims (2)

RA.687 7 ^ * 12/31/65 S c h u t ζ a η s ρ rüche Abs ρ err h aim mil; Ball plug, for which under "waiver on metallic ones that are in contact with the ball plug Centering or bearing rings of the flexible material "existing die ring as the sole guide element serves for the ball, which is only supported at points exposed to the greatest deformation, without that this support touches the ball plug at any point, characterized that the sealing ring made of resilient material between two in the ring seat housed, but the ball plug inserted at no point touching metal rings and with the metal rings is positively connected. 2. shut-off valve according to claim 1, characterized by g e, that the connection of the three rings by bolts inserted radially through all rings takes place ο ο Stopcock according to claim!, characterized in that that a metal ring on the one facing the cock and on the one facing away from him Side has annular grooves which are connected to one another by a few, preferably axially extending connecting channels, wherein in the annular grooves and
The sealing ring made of plastic is molded into the connecting channels = ο Stopcock according to claim!, characterized in that between metal rings with radial, preferably aligned bores in the space between the rings and the bores
a plastic body is molded in, which has a sealing surface that rests on the ball plug " tHf..n'ni "iMJny on" Sehuiionspi.) is " die ""te"! ^ ,,, "■ vs ·. *. ■■■ '■ · ■ -i - Mn documents ob, Oie MOhtltehe- Södeutung der A'Wl ·: -. ·' J ■ -Λ ^ ■ '. »' ·
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