SE201640C1

SE201640C1 -

Info

Publication number: SE201640C1
Authority: SE
Publication date: 1965-01-01

Description

KLASS INTERNATIONELLSVENSK F06 k47 g:26/02 PATENT- OCH REGISTRERINGSVERKET Ans. 12 847/1962 inkom den 29/11 1962 utlagd den 3/5 196 A.H. ANDERSSON & Co. AB, LJUNG Anordning vid slidventiler med icke stigande spindel Uppfinaare: B Bengtsson Vid slidventiler, sarskilt vid sadana med icke stigande spindel, har man i regel en slid eller kfigla, vilken forskjutes upp eller ned i en slidgang, mom ventilhuset, sâ att den i sitt ena ytterlage hell avstanger forbindelsen mellan ingangsstudsen pa ena sidan om sliden och utloppsstudsen pa andra sidan, medan sliden I sitt andra ytterlhge halt oppnar forbindelsen mellan dessa hada studsar. For andamalet aro de oppningar, som forbinda slidgangen med respektive studsar, noga planbearbetade, sâ att sa god passning som mojligt skall ernas melIan sliden och dessa oppningar vid helt stangd ventil, ty endast om passningen fir synnerligen god, blir ventilen tat i sitt stangda lage. CLASS INTERNATIONAL SWEDISH F06 k47 g: 26/02 PATENT AND REGISTRATION AGENCY Ans. 12 847/1962 filed on 29/11 1962 issued on 3/5 196 A.H. ANDERSSON & Co. AB, LJUNG Device for slide valves with non-rising spindle Inventor: B Bengtsson For slide valves, especially for those with non-rising spindle, you usually have a slide or cone, which is displaced up or down in a slide passage, including the valve body, so that in its one outer layer successfully shuts off the connection between the inlet spout on one side of the slide and the outlet spout on the other side, while the slide in its other extreme content opens the connection between these had spouts. For this purpose, the openings which connect the slide with the respective bounces are carefully planed, so that as good a fit as possible should be between the slide and these openings with the valve completely closed, for only if the fit is extremely good will the valve be taken in its closed position. .

For forbattrande av passningen har man redan fOreslagit, olika htgarder. En sadan Or, att man gjort sliden eller kaglan svagt kilformad och pa motsvarande satt lutat tatningsplanen inom ventilhuset. Detta 'Acker dock i langa loppet joke till, ty genom vinkelavvikelser ph grund av deformation genom yttre hrytning, utlosta inre spanningar i godset, och bearbetningsfel kunna lickningsvagar uppkomma. Man liar dad& Oven foreslagit att uppdela kaglan i tvA. delar, som varit instaBbara i fOrhMlande till varandra, i det att den ena delen varit forsedd med en sfariskt skalformad fordjupning, medan den andra halften av ventilkaglan varit fOrsedd med en daremot spegelsymmetrisk, sfariskt kalottformad vulst. To improve the pass, various htgarder have already been proposed. Such is the case that the slide or cone has been made slightly wedge-shaped and in a corresponding manner the sealing plane within the valve housing has been inclined. However, this is a joke in the long run, because due to angular deviations ph due to deformation due to external shaking, triggering internal stresses in the goods, and processing errors, licking waves can arise. Man liar dad & Oven proposed to divide the kaglan into two. parts which have been unstable in relation to each other, in that one part has been provided with a spherical shell-shaped depression, while the other half of the valve cone has been provided with a mirror-symmetrical, spherical capillary-shaped bead.

Den sistnamnda konstruktionen av ventilkaglan till en slidventil av godtycklig beskaffenhet har i praktiken vid fackmassigt och noggrant utforande fungerat tillfredsstallande, men den fOranleder vissa andra nackdelar, och detta galler i sarskilt hog grad vid slidventiler med icke stigande spindel. I forsta hand ma hanvisas till det stora antalet olika delar, som Dupl. kl. 47 g: 40/04 ingh. i ventilkaglan, forutom de hada halfterna av kaglekroppen, vilka var for sig skola hava en bearbetad anliggningsyta. Dessutom maste emellertid dessa inbordes sammanhallas, sa att deras invandiga gangor kunna samverka med spindelns utvandiga gangor. Denna sammahallning skall dessutom besta Oven vid oppen ventil, da de bada halfterna p0. grund av slidgangens kilformade utbildning icke langre utsattas for ett hoppressande tryck. Man erhailer darigenom ett stort antal tfinaligen sma detaljer, vilket forsvarar ventilens hopmontering men framfor allt mOjliggor, att marl vid rengoring eller annat service-arbete pa ventilen kan fOrlora en. eller annan av dcssa de-tall er, utan vilka ventilen icke Or funktionsduglig. The latter construction of the valve cone into a sheath valve of any nature has in practice worked satisfactorily in professional and careful execution, but it gives rise to certain other disadvantages, and this applies to a particularly high degree to sheath valves with non-rising spindle. In the first place, reference must be made to the large number of different parts, such as Dupl. at 47 g: 40/04 ingh. in the valve cone, in addition to the had halves of the cone body, each of which should have a machined contact surface. In addition, however, these inboards must be held together, so that their inner passages can co-operate with the outer passages of the spider. This same inclination must also consist of an open valve, as the two halves p0. due to the wedge-shaped formation of the vagina, it is no longer exposed to a compressive pressure. This results in a large number of very small details, which defends the assembly of the valve, but above all it is possible that the marl during cleaning or other service work on the valve may be lost. or another of these parts without which the valve is not functional.

Foreliggande uppfinning avser en ventil med icke stigande spindel, vid vilken man. undviker de nackdelar, som hittills iakttagits vid de kanda ventilerna, under bibehallande av ventilartens fordelar. The present invention relates to a valve with a non-rising spindle, in which one. avoids the disadvantages hitherto observed in the known valves, while maintaining the advantages of the valve type.

Salunda vill man sasom vid den. med yentilkagla i ett stycke utforda ventilen hava anordningen sa. utford, att man kan skruva ut ventilspindeln. utan risk att forlora flagon vital smadel och taga ut ventilspindeln jamte kaglan, men man vill Oven hava den delade ventilkaglans forlattrade anpassningsformaga efter ventilhuset under forbattrad tatning. Slutligen vill man hava en enkel konstruktion med fa delar, vilka normalt hanga ihop, om ock med glapprum i ventilens oppna lage. Det eventuellt forefintliga glappet skall daremot upphora i ventilens slutna lage. Alla dessa f Ordelar vinnas vid en ventil enligt foreliggande uppfinning. Salunda is what you want with it. with yentilkagla in one piece challenge the valve hava device said. challenge, that you can unscrew the valve stem. without risk of losing the flagon vital smadel and taking out the valve spindle and the kaglan, but you also want Oven the abandoned valve kaglan's abandoned adaptation shape to the valve housing under improved sealing. Finally, you want a simple construction with a few parts, which normally hang together, albeit with a clearance in the open layer of the valve. The possible existing gap must, however, cease in the closed layer of the valve. All of these advantages are gained by a valve according to the present invention.

Uppfinningen avser shlunda en. ventil med icke stigande spindel, vid vilken. ventilkaglan 22016 är utfOrd i tva delar. Den ena delen av kaglan ãr darvid forsedd med en inat konkav, atminstone tillnarmelsevis sfariskt kalottformad anliggningsyta, och den andra delen av kaglan är fOrsedd med en daremot svarande konvex, atminstone tillnarmelsevis sfariskt formad anliggningsyta. The invention relates to a. valve with non-rising spindle, at which. valve valve 22016 is made in two parts. One part of the cone is then provided with an intact concave, at least approximately spherically capillary abutment surface, and the other part of the cone is provided with a corresponding convex, at least approximately spherically shaped abutment surface.

Enligt uppfinningen dro de hada delarna av kaglan forsedda med var sin for upptagande av spindelns gangade del invandigt gangad halsdel, och de hada halsdelarna aro omgivna av en ringformig bandagering ay &Wan beskaffenhet, att vid ventilens demontering delarna icke kunna falla isar, atminstone icke sa range ventilspindeln Or fOrenad med kaglan, men dock med sadant spelrum, att delarna av kaglan vid stangd ventil kunna stalla ill sig var for sig till god tatning mot slidspeglarna. According to the invention, the hot parts of the kaglan provided with a separate neck part for receiving the threaded part of the spindle, and the hot neck parts are surrounded by an annular bandage ay & Wan nature, that during disassembly of the valve the parts can not fall ice, at least not so wide valve stem Or combined with the cone, but with such clearance that the parts of the cone when the valve is closed can stand separately to a good seal against the wear mirrors.

Uppfinningen kommer nedan att narmare beskrivas i anslutning till ett pa ritningarna askadliggjort utforingsexempel, visande en ventil med icke stigande spindel. Pa ritningen visar fig. 1 ventilhuset i sektion med insatt ventilkagla, och fig. 2 visar en bild i fOrstorad skala av sjalva ventilkaglan, medan fig. 3 visar en sektion genom ventilkaglan enligt fig. 2. Fig. 4 visar samma ventilkagla oyanifran, och fig. 5 visar en sektion genom ventilkaglan enligt fig. 4. The invention will be described in more detail below in connection with an exemplary embodiment illustrated in the drawings, showing a valve with a non-rising spindle. In the drawing, Fig. 1 shows the valve housing in section with inserted valve cone, and Fig. 2 shows an enlarged view of the valve cone itself, while Fig. 3 shows a section through the valve cone according to Fig. 2. Fig. 4 shows the same valve cone oyanifran, and Fig. 5 shows a section through the valve cone according to Fig. 4.

Ventilhuset 10 är i huvudsak rorformat och anslutes tt hoger resp. at vanster med rormuffarna 11 resp. 12. Slidspeglarna 13 resp. 14 aro kilformigt fOrskjutna i forhallande till varandra f6r att lamna plats for den kilformiga sliden eller kaglan 15. Sliden är sä utford, att den erhaller andiunalsenligt forbindande med spindeln 16, vilket sker darigenom att den av halsarna 22, 23 bildade owe bryggan ph sliden är invandigt gangad och ventilspindeln_ 16 är utvandigt gangad med efter slidens gang-or anpassade gangor. Denna anordning leder till att ventilen manovreras pa det satt, som man plagar beteckna som icke stigande spin-del. The valve housing 10 is substantially rudder-shaped and is connected to the right resp. that left with the rudder sleeves 11 resp. 12. The slide mirrors 13 resp. 14 are wedge-shaped offset in relation to each other to leave space for the wedge-shaped slide or cone 15. The slide is so challenged that it obtains a non-union-like connection with the spindle 16, which is done by the owe bridge formed by the necks 22, 23 being internally threaded and the valve stem_16 is externally threaded with threads adapted to the slide's. This device causes the valve to be maneuvered in the manner which is often described as a non-rising spin part.

Ventilspindeln styres och tatas pd traditionellt satt i ett ventillock 17 och en Overfallsmutter 18. Da dessa detaljer aro for fackmannen val kanda, torde de icke behova ytterligare forklaras. Ventilspindeln skjuter upp Over overfallsmuttern 18 med en ph lampligt satt formad del, enkannerligen fyrkanten 19, vilken Or avsedd for fastande av ventilens manOverorgan, vanligen i form ay en pa ritningen icke visad ratt. The valve stem is controlled and mounted traditionally in a valve cover 17 and an overflow nut 18. As these details are known to those skilled in the art, they should not be further explained. The valve stem protrudes above the overflow nut 18 with a suitably shaped part, one square 19, which Or is intended for fastening the valve maneuvering means, usually in the form of a knob not shown in the drawing.

Ventilsliden eller -kaglan visas fran sidan i nagot storre skala i fig. 2. Den bestar av tvh delar 20 och 21, vilka Oro lost lagda mot varandra och kvarhallas i fOrbindelse med varandra dels darigenom att deras mot varandra vanda sidor aro formade pa sarskilt satt, dels aven darigenom att vid ena anden av de hada ventilhalvorna 20, 21 en hals Or utformad Aiken är omgiven med en bandagering. Vid den i fig. 2 visade konstruktionen utgoras halsarna ay de i sektion tillnarmelsevis halvcirkelformade delarna 22 och 23, och bandageringen utgores av en ring 24. The valve slide or cone is shown from the side on a somewhat larger scale in Fig. 2. It consists of two parts 20 and 21, which are loosely laid against each other and are retained in connection with each other, partly in that their facing sides are formed in a special way. , partly also by the fact that in one spirit of the hada valve halves 20, 21 a neck Or formed Aiken is surrounded by a bandage. In the construction shown in Fig. 2, the necks are formed by the approximately semicircular parts 22 and 23 in section, and the bandage is formed by a ring 24.

Ventilsliden eller -kaglan enligt fig. 2 visas i genomskarning i fig. 3. Man ser darav de invandiga gangorna 25 och 26 i halsdelarna 22 och 23, vilkas gangor komplettera varandra, sa. att de passa efter motsvarande gangor pa. ventilspindeln 16. I sin centrala del ar yentilkagledelen 20 fOrsedd med en invandigt konkav, sfarisk eller tillnarmelseris sfarisk yta 27, mot vilken en motsvarande konvex yta pa kagledelen 21 anligger. Den sistnamnda ytan 28 Sr fOretradesvis utbildad pO. anden av en cylindrisk vulst 29, vilken Or framstalld i ett stycke med kagledelen 21. Vulsten 29 sammanhanger med insidan av kagledelen 21. Den tillnarmelsevis sfariska kalotten 28 har nagot mindre omkrets an den tillnarmelsevis sfariska kalotten 27, sa att viss vridning skall bliva mOjlig under styrning mellan de hada kalottytorna, varvid vardera ventilkagledelen 20 resp. 21 vrides kring en i forhallande till ventilens centrum farskjutbar medelpunkt 31, vilken bOr ligga pa axiallinjen genom Hirmuffarna 11 och 12 resp. slidspeglarna 13 och 14. Denna axiallinje Sr angiven med streckprickade linjer sasom linjen 32. The valve slide or cone according to Fig. 2 is shown in section in Fig. 3. This shows the internal passages 25 and 26 in the neck parts 22 and 23, the passages of which complement each other, sa. that they fit after the corresponding times pa. the valve spindle 16. In its central part, the yen tilting part 20 is provided with an internally concave, spherical or proximal spherical surface 27, against which a corresponding convex surface of the kagle part 21 abuts. The latter surface 28 Sr Preferably trained pO. the spirit of a cylindrical bead 29, which Or is made in one piece with the cone part 21. The bead 29 is connected to the inside of the cone part 21. The approximately spherical cap 28 has a slightly smaller circumference than the approximately spherical cap 27, so that some rotation should be possible during control between the hot cap surfaces, each of the valve stem portion 20 resp. 21 is rotated about a center 31 displaceable relative to the center of the valve, which should lie on the axial line through the sleeve sleeves 11 and 12, respectively. slide mirrors 13 and 14. This axial line Sr is indicated by dash-dotted lines such as line 32.

Vid framstallningen av ventilholjet 10 har ph insidan av detsamma anordnats ett par lister eller styrskenor 33, se fig. 1. For att bereda plats for dem och pa sa salt Walla ventilsliden i ratt lage, sh att densamma icke visar bendgenhet att vridas kring ventilspindeln 16 resp. dess geometriska axel, Oro ventilsliddelarna 20 och 21 nagot avfasade vid sina sidor, sa att oppningar 34, 35 bildas, vilka gripa om listerna 33. In the manufacture of the valve housing 10, a pair of strips or guide rails 33 have been arranged inside the same, see Fig. 1. In order to make room for them and so on, the Walla valve slide is in a straight line, so that it does not tend to rotate around the valve stem 16. resp. its geometric axis, the valve slide members 20 and 21 are slightly chamfered at their sides, so that openings 34, 35 are formed, which grip the strips 33.

Som ovan namnts, tjanar ringen 24 till att sammanhalla de bhda delarna 20 och 21 av ventilkaglan. FOr detta andamal Or ett spar 36 resp. 37 anordnat i utsidan ay vardera halsdelen 22 resp. 23, och ringen är anbragt i detta spar, sa att de hada delarna icke kunna falla isar, i varje fall icke sa lange ventilspindeln Or ford genom halsen ph ventilkaglan. Man kan darvid exempelvis anordna sparen sa djupa och ringen med sadan diameter, att ringen kan tradas Over halsarna och in i sparen, da ventilspindeln Or utskruvad ur ventilkaglan, men sedan ventilspindeln skruvats in i ventilkaglan och darigenom sparrat isar de hada ventilkagledelarna, kan ringen icke lossas. Man kan Oven anordna ringen med na.got trangre omkrets, sa att den icke ens kan lossas, dh ventilspindeln Or helt ntskruvad Iran 201 63 ventilkaglan. I det sistnamnda fallet bor ring-en krympas pa halsen 22-23. As mentioned above, the ring 24 serves to hold the bhda parts 20 and 21 of the valve ball together. For this purpose Or a save 36 resp. 37 arranged in the outside ay each neck part 22 resp. 23, and the ring is arranged in this groove, so that the hot parts can not fall into the ice, in any case not so long the valve stem Or ford through the neck ph valve cone. For example, the grooves can be arranged so deep and the ring with such a diameter that the ring can be threaded over the necks and into the grooves, when the valve stem Or is unscrewed from the valve cone, but after the valve stem has been screwed into the valve cone and thereby sparred the had valve cone parts, the ring can not lossas. You can also arrange the ring with a slightly narrower circumference, so that it can not even be loosened, ie the valve stem or completely unscrewed Iran 201 63 valve cone. In the latter case, the ring should be crimped on the neck 22-23.

Vid denna anordning maste man bereda plats for ventilspindeln under ventilkaglans upp- och nedgende rorelse. Detta sker genom att man vid gjutningen av ventilkagledelen 20 anordnar dess sfariska yta 28 sä langt at hoger, se fig. 5, att den icke kommer i berOring med ventilspindeln, samtidigt som man vid gjutningen av ventilkagledelen 21 anordnar plats for ett lopp 38 genom vulsten 29, genom vilket lopp ventilspindeln kan passera._ Genom den sfariskt verkande installningsmOjligheten mellan de hada delarna av ventilkaglan sa_kerstaller man, att sedan ventilkaglan skruvats ned i botten av slidgangen, densamma yid fortsatt skruvning pa ventilspindeln automatiskt installer sig i sadant lage, att ba.sta mojliga tatningsanliggning erMlles med slidspeglarna. Verkstallda prov hava visat, att denna tatning aldrig blir samre an den, som man vid tidigare kanda anordningar med kilformigt utpressade kaglehalfter kunde .erna, men i manga fall, dar anordningen med kilformigt utpressningsbara kaglehalfter icke fungerade val, fungerar anordningen enligt uppfinningen perfekt. In this device, space must be provided for the valve stem during the upward and downward movement of the valve stem. This is done by arranging the spherical surface 28 so far to the right when casting the valve stem part 20, see Fig. 5, that it does not come into contact with the valve stem, at the same time as arranging space for a bore 38 through the bead during the casting of the valve stem part 21. 29, through which barrel the valve stem can pass._ By the spherically acting installation possibility between the two parts of the valve cone it is ensured that after the valve cone has been screwed down to the bottom of the slide, the same yid continued screwing on the valve stem automatically installs itself in such a position. The most possible sealing device is fitted with the wear mirrors. Experiments have shown that this seal is never the same as that previously known in devices with wedge-shaped cone halves, but in many cases where the device with wedge-squeezable cone halves did not work, the device according to the invention works perfectly.

Genom anordningen enligt uppfinningen bliva de i ventilkaglan inghende delarna forbundna med varandra, sa att vid nedmontering av yentilen delarna alltjamt hanga samman, och icke sasom vid tidigare kanda yentiltyper av ovan angivet slag falla isar, varvid en. eller flera mindre smadelar kunna gâ fOrlorade. By means of the device according to the invention, the parts contained in the valve cone are connected to each other, so that when dismantling the yentilla the parts still hang together, and not, as in previous known yentile types of the above-mentioned type, ices fall. or several smaller pieces may be lost.

Da i det ovanstaende beskrivits en anordning, med en bandagering i form av en ring, som omgriper de bada inbordes lika halsdelarna 22 och 23, sa bor bemarkas, att uppfinningen givetvis joke är inskrankt till denna sarskilda anordning, utan att vilken art av bandagering som heist kan komma ifra.ga, blott den fyller villkoret att de bada delarna av ventilkaglan lake skola kunna falla isar, atminstone icke sa lange ventilspindeln Or insatt i forbindelse med ventilkaglan. Bandageringen behover salunda icke vara utfOrd i form av ett sarskilt stycke, fritt fran mekaniskt samband med de hada delarna av yentilkaglan utan den kan vara utford i ett stycke med den ena delen av ventilkaglan. I sistnamnda fall kan man exempelvis utfOra densamma sa, att man med den ena ventilkaglan redan vid framstallningen forenar en skalf or- mad, nedatriktad kalott och i den andra delen utformar en kula, anpassad efter den ifragavarande kalotten med endast det spelrum, som erfordras for den onskvarda installningsformagan och rorligheten mellan delarna av ventilka.glan. KuIan kvarhalles i kalotten under inverkan av gangorna for ventilspindeln, vilka ber8ra dels kulan, dels Liven kalottens insida. Om man Onskar, att kalotteri skall kvarhalla kulan aven efter det att ventilspindeln skruvats ur, kan man ph nagot lampligt salt lasa oppningen nedat ph kalotten, sá att kulan icke kan glida ur, t. ex. genom in'atstukning av dess kant, med hi alp av ett stift eller liknande. Aven i andra hanseenden kan den ovan beskrivna och pa ritningen visade anordningen modifieras, utan att man for den skull kommer utanfOr uppfinningens ram. Since a device has been described above, with a bandage in the form of a ring, which encloses the two embedded parts like the neck portions 22 and 23, it should be noted that the invention is of course limited to this particular device, without any kind of bandage being used. heist can come from.ga, as long as it fulfills the condition that the two parts of the valve kaglan lake should be able to fall ice, at least not so long the valve spindle Or inserted in connection with the valve kaglan. The bandage thus does not have to be made in the form of a separate piece, free from mechanical contact with the hot parts of the yentil kaglan, but it can be challenged in one piece with one part of the valve kaglan. In the latter case, it can be carried out, for example, by combining with one valve cone already during manufacture a scaled-shaped, downward-facing cap and in the other part forming a ball, adapted to the cap in question with only the clearance required for the difficult installation shape and the mobility between the parts of the valve shaft. The ball is retained in the cap under the influence of the passages for the valve stem, which bear partly the ball and partly the inside of the cap. If you want the ball bearing to retain the ball even after the valve stem has been unscrewed, you can load the opening down the bottom of the ball cap with some suitable salt, so that the ball cannot slide out, e.g. by inserting its edge, with a pin of a pin or the like. Also in other aspects, the device described above and shown in the drawing can be modified without departing from the scope of the invention.

Claims

Patent claim: The present invention relates to a. device for slide valves with non-rising spin part, yid which valve kaglan Or challenges in two parts. One part of the kaglan (20) is thereby provided with an ink concave, at least approximately spherically capillary abutment surface, and the other part (21) of the kaglan is provided with a corresponding convex, it-millstone approximately spherically shaped abutment surface. According to the invention, the hada parts (20, 21) of the kaglan are provided with their own internally threaded neck part (22, 23) for receiving the spindle part (16), and the hada neck parts are surrounded by an annular bandage (24) of such nature, that during the disassembly of the valve the parts cannot fall into ice, at least not so long that the valve stem is united with the cone, but still with such clearance that the parts (20, 21) of the cone can be adjusted when the valve is closed to good taming , against the slide mirrors. Cited publications: Pat entskrifter fra France 758 834, 1 026 222; Germany 114,725, 1,106,130; USA 3,052,446.