DE1600810A1 - Valve - Google Patents

Description

Hills-MoGenna Company _% Oarpentersville _t State of Illinois (V.St.A.)

ii »iWii WIiIiMi« πι »! ii hin »« wi mm ii rn um nn ι im m m. ι in m - ιικηιι ι ι um rni inn im nn inn mn im mn m miiirMnHi rn ιττι irnni -ιπιμί irm

Valve

betsfifft ®is valve that

g ¥ © Btil © a got ₃ <äi ©

to open the valve for the ball

Such valves ^ © notigaa a © St? Euerwell® ₈ di® extends from the l & aenseite of the ¥ entilgeliäiis9s to the outside and with one side © to the ball bsw _e the other dreliliaren SshließkSrpsa? aage is closed · To turn the Steiierwelle di © at = »in the case of manual actuation«

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supply - one arranged at the outer free end of the shaft Lever or a handwheel. Due to the need guide the control shaft through an opening in the housing, Difficulties often arise due to leakage along the control shaft. The possibility of occurrence such difficulties are exacerbated by the fact that the shaft must be rotated and that of the operating lever Forces are exerted on the shaft that move it transversely to its axis of rotation or «by a second axis, which initially corresponds to the axis of rotation Wave runs, tilt.

The invention is therefore gave di © © © _s sigsmel sia propose valve, whose construction, the possibility of occurrence of leakage η ψ & tm region of the rotatable control Well © £ ga returns a minimum. This object is achieved in that the valve constructed according to the invention withstands those forces which want to tilt or rotate the control shaft about an axis running transversely to its axis of rotation, thereby reducing the possibility of leakage losses and reducing both wear and maintenance costs.

The invention is hereinafter by way of a preferred one Embodiment explained and in the Ss

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shown. It

Big «1 a longitudinal section through a fiction-JJi atif built valve}

2 shows a partial section on an enlarged scale of the valve;

FIG. 3 is a top plan view of that shown in FIG Valve;

FIG. M shows an echenatic representation corresponding to FIG. 2 to explain the effects acting on the control shaft. Forces; and

FIG. 5 shows a cable section to illustrate FIG initial position of the sealing rings.

In Fig. 1, a valve IO constructed according to the invention is shown, which has a housing 12 with a cover M, which is fastened to the housing 12 with screws 16 or in some other way. The housing 12 has a Durclaströasanal 18, the part of the axial spaced apart sealing rings or " annular valve seats 20,22 is formed «Between the valve seats a ball 24- is arranged, which at fits the seats "

The ball 24 is "penetrated by a bore 26 which in the open position of the valve with the seats 20.22 aligns. A control shaft 28 is attached to the ball 24 connected, which is used to rotate the Ewgel uta 90 °,

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BATH

when the valve shown in FIG. 1 is to be brought into its closed position. At the inner end of the control shaft 2Q an axially projecting from this tab 30 is provided loosely in a region at the top of the ball 24 provided slot 32 engages _o Bs is the drawing shows that dee between the walls of the slot 32 and the tongue 30 a certain amount of play 34 is provided; the ball 24 is therefore held exclusively by and between the valve seats 20, 22.

A handle is used to rotate the control shaft 28 or a lever 36 which is attached to the outer, free end of the control shaft so that it cannot rotate relative to it and against axial displacement by a stop 33 and a nut 40 is set. To twist the Control shaft is the lever 36 by applying a Force moved in the direction of arrow 42. The action of such a force leads on the one hand to the fact that the control shaft rotated about its longitudinal axis; at the same time a tilting force acts on the shaft, which through the arrow 44 is indicated and the shaft 28 by a Wants to rotate axis which lies in a plane which runs perpendicular to the longitudinal or rotational axis of the shaft. In other words, the tilting force 44 tries the upper one

009809/08 0 9

Bad @ the wave to the right and the lower ISada of the wave to the left in 51g. 4 to rotate.

According to a feature of the invention, the valve 10 is provided with a direction ₈ dt® <äi © Stsusrnrelle 28 iß eia @ 2> © in © wall dos Beekelg 14 isas'slisetaQiaden

46 holds «έγο & ιγ © !! ®ia to dea? ^ tomag aieli © rg®st @ lli3 imä € @ ^

s®ia) 2kÄttt

is

₈ d © r sia® has the seat 48 62 ", di @ rests against Diehtriag 52. sad @ r © M <sktr-img 5 * wU? Ä. G @ gea held his ^ Sitss 50 with the help of sleeve © 64-, , fli @ © in © dem Slts 50

lying conical surface 66 has. The inclinations dor conical surfaces of the seats 48,50 are selected so that they from a surface of the cover "wall to the center line thereof converge" in case of the drawn example of the Änaführungs Erfindimg let zn BQhOn ₁ that the Bülee 6Ί- NaOH Mother the Ansisfeea 40 Geges, cta sealing ring 54 and the Flsmeoh 60 n @ g © a ü®n Bishtri & g 52 is pressed.

'The Bichtringe 52 maä ^ - ^ © stfSkQm ^ ossogswsis® ame an f®s "fe © js _s

ia, ais, i @ a

they fü

Ü old © la @ egg

dung, the bieti, ta? ± iag @ 5 ^% 3 ^ s © prepared _s that it comprises a © Setaig © Mafesn, oil © ®n in the unloaded state of the "wipe & bagrsEiisndan lagelflSefe ^ n provided slope abweichte u @ MAEB H , g · 3 ha & @ ^ the power rings 52.5 * in the unloaded state have a slope that is less steep than the slope of the narrowing cone. rf! _s <ü © & L & B9

00 9 8 09/0809

both against the adjacent conical surfaces 50,66 and 46,62 and also against the control shaft 28 and the opposite one Press the inner wall of the cover 14 "

As already mentioned, the tilting force which occurs when the control shaft 28 is turned tends to tilt the control shaft about a transverse axis zn, this axis basically lying in the middle between the diaphragm rings 52,54- and through the point 68 in FIG It can now be seen that with every tilting movement of the control shaft 28 around the point or the axis 68 in the direction of the clockwise in the illustration according to Hg 52, which has a component corresponding to arrow 70; in a similar manner, the sleeve 64 is pressed against the sealing ring 3 ' with a force which has a component corresponding to arrow 72. These forces indicated by arrows 70, 72 counteracting forces, which are indicated by arrows 74-, 76 · These reaction forces arise when the sealing rings 52, 54 o Because of the provision of the conical surfaces on the sealing rings 52, 54 u nd the seat surfaces of the seats 48, 50 as well as of the flange 60 and the sleeve 64 interacting with them are acted upon by the arrows 70 - 76.

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indicated forces perpendicular to the broad, conical front surfaces of the diene rings. In this way, the forces are distributed more evenly over the sealing rings, which in turn leads to a reduction in wear on the sealing rings to a minimum. The arrangement is also made in such a way that the control shaft 28 is secured against tilting mainly by the conical surfaces that work together and not by the narrow inner cylinder surfaces 58, 56 of the sealing rings.

The sealing rings 52,54- are sufficient in all normal cases to produce an excellent seal in the area of the control shaft; In addition, it may be desirable to provide an additional sealing element only in a few applications, for example in high vacuum technology. This is advantageously formed by an O-ring 78 which is inserted into an annular groove 80 provided on the control shaft 28. It is important here that the annular groove sits as precisely as possible in the middle between the sealing rings 52 and 54, since this is where the axis, which is also neutral with regard to the possible tilting of the control shaft, is located.

It is also advantageous that the sealing ring 52 opposite

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the conduction pressure is supported in its seat 48, so that the Laitungo print itself durob. Reinforcement of Sealing effect further counteracts any leakage losses. It comes nooh that a possible union of both Sealing rings during the normal life of the Veatiles are periodically followed by the mother leaves·

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Claims (4)

Expectations 1. Valve for hsgeln the uurchstrommnfiiige through a pipe or the like, with a closing body and a rotating control shaft which is axially displaceable and rotatable in a housing bore, with a coaxial outer bore or the like located at the inner end of this bore. _{for receiving an inner control shaft seal 9 made} of a flexible material which can be joined by a hanging flange or the like on the control shaft, with an * am
outer drawer of g @ nanntea Belisaae or similar siir on mate® sisaa? ₅ ame Material b @ at®li®sid © ® , which can be removed from one spamiMli © © «dgl», which is on the control wall © jdal wsyseMeMiar iet, ^ iisaimeiiclrückbar, and nlt a "Eia ^ iohtimg si» simultaneous ffest "'tensioning of the inner and outer 0teu®nr®lleMichtmigCQ characterized that the inner Aafboteimg accommodating the inner die ring (52) has an inner truncated conical seat (4S), the diameter of which is progressively sloping axially outwards; that the inner flange (60) or the like on the sealing ring
has adjacent frustoconical clamping surface (62), 00S8O9 / Ö8O8 the shape of which corresponds to that of the seat surface (48); that the sealing ring (52) has a shape and suitable spring properties suitable for adapting to the face (46, 62); that the outer counter bore receiving the outer sealing ring (54) is a frustoconical seat (50) whose diameter ¹ progressively decreases axially inwards: that the sleeve (64) or the like. one on the sealing ring (5 * 0 abutting clamping surface (66) and frustoconical shaped corresponding to the seat surface (50); and that the outer sealing ring (54 ·) has such a shape and such spring properties that it is frustoconical under normal operating pressure on both Surfaces (66, 50) rests. 2. Valve according to claim 1, characterized in that the sealing rings (52, 54) "wor their installation have frustoconical, axial inner» and outer surfaces, the angle of inclination of which differs from the angle of inclination of the seat bevr. 3 * valve according to claim 1 or 2, characterized in that that the vertices of the frustoconical seats (48, 50) coincide at a point (68). 4. Valve according to claim 3, characterized in that 009809/0809 the apex of the frustoconical seat surfaces (48, 50) in äQj? llitte lies between the inner ends of the SItjsalachen on d <-. r Längaachae of the Stsüorjrelle. BAD ORIQlNAL 009809/0809