SE190838C1

SE190838C1 -

Info

Publication number: SE190838C1
Authority: SE
Publication date: 1964-01-01

Description

Uppfinnare: L W Fellander Foreliggande uppfinning avser en ventilan.- ordning i kanalen for skarsyrgas hos skarbrannare. Namnda ventilanordnings utforande och verkan aro synnerligen betydelsefulla hos en skarbrannare, dels emedan ventilanordningen skall tillforsakra ett mjukt oppnande for och en jamn tillforsel av skarsyrgas, sâ att jamna skarningar eller mejslingar erhallas, dels emedan den ej far uttrotta operatoren under handhavandet av skarbrannaren.. Detta tillfredsstalles genom att utfora ventilanordningen enligt appfinningen. Inventor: L W Fellander The present invention relates to a valve arrangement in the duct for cuttings gas in cutters. The design and effect of said valve device are particularly important in a cutters, partly because the valve device must ensure a soft opening for and an even supply of cuttings gas, so that even cuttings or chisels are obtained, partly because it must not exhaust the operator while operating the cutters. is satisfied by designing the valve device according to the app invention.

For ventilanordningen utnyttjas del kanda grundutforandet med en kolvformig ventilkropp, som är frigiende in genom ventiloppningen, intill vilken en 0-ring finnes flar samverkan med ventilkroppen, och med en ventiispindel, som bar en kolvformig styrningsdel, vilken är lagrad i en i ventilhuset insatt styrhylsa och avtatad mot styrhylsan medelst en 0-ring. Enligt uppfinningen Or ventilens stangningslage, dã ventilkroppen Or i kontakt med 0-ringen vid ventiloppningen, bestamt genom att en flans Or anordnad p ventilspindein intill styrningsdelen och med sin ena sida vilar mot styrhylsan under inverkan av en omkring ventilspindeln anbragt och mot flansens andra sida a:ngripande tryckfjader och yentilspindeln Or mot verkan am tryckfjadern axiellt forskjutbar under upphavande av flansens anslag mot styrbylsan fOr forflyttning av ventilkroppen igenom ventil5ppningen och i gasstr8mmens riktning till Oppet lage. For the valve device, the basic design is used with a piston-shaped valve body, which is released through the valve opening, next to which there is an O-ring in cooperation with the valve body, and with a valve spindle, which carried a piston-shaped guide part, which is mounted in a valve sleeve inserted in the valve housing. and tapped against the guide sleeve by means of an O-ring. According to the invention Or the closing position of the valve, then the valve body Or in contact with the O-ring at the valve opening, determined by a flange Or arranged on the valve spindle adjacent the guide part and with its one side resting against the guide sleeve under the influence of a valve. gripping compression spring and the spring spindle Or, against the action of the compression spring, axially displaceable while having the flange abutment against the guide sleeve for moving the valve body through the valve opening and in the direction of the gas flow to the Oppet bearing.

Uppfinningen askadliggores genom en sh'- som exempel pa bifogade ritning visad utforings form. Fig. 1 visar en sidovy av en del ay en skarbrannare med ventilanordningen enligt uppfinningen i langdsektion och med stangd ventil. Fig. 2 visar en liknande vy och sektion med oppen ventil. The invention is illustrated by an embodiment shown in the accompanying drawing '. Fig. 1 shows a side view of a part ay of a torch burner with the valve device according to the invention in longitudinal section and with closed valve. Fig. 2 shows a similar view and section with open valve.

I ett handtag 1 med tillforselledningar fOr syrgas °eh acetylen Or insatt ett kopplingsstycke 2, som dels fortsattes av ett blandgasrot. 3 for all framleda en blandning av acety- Dupl. kl. 47 g: 21/02; 47 g: 40/03 len och syrgas till skarbrannarens munstycke, dels uppbar ett ventilhus 4, fran vilket utgar ett ror 5 for skarsyrgas till skarbrannarens munstycke. In a handle 1 with supply lines for oxygen or acetylene Or inserted a coupling piece 2, which was partly continued by a mixed gas root. 3 for all produce a mixture of acety- Dupl. at 47 g: 21/02; 47 g: 40/03 len and oxygen to the cutter burner nozzle, partly supported by a valve housing 4, from which a pipe 5 for cut oxygen gas to the cutter burner nozzle emanates.

Ventilhuset 4 innehaller ett ventilrum 6, som har ett tillopp 7 for skarsyrgas,tillstrommande genom handtaget 1 och kopplingsstycket 2, och ett av en ventiloppning 8 bildat utlopp till rOret 5. I den ventiloppningen begransande vaggen är en urtagning 9 anordnad och begransas i riktning mot ventilrummet ay en stodbricka 10. En 0-ring 11 air lampligt packningsmaterial sasom syntetiskt gummi Or inlagd I urta:gningen 9. The valve housing 4 contains a valve space 6, which has an inlet 7 for cutting oxygen, flowing through the handle 1 and the coupling piece 2, and an outlet formed by a valve opening 8 for the tube 5. In the cradle defining the valve opening, a recess 9 is arranged and limited in the direction of the valve compartment ay a standing washer 10. An 0-ring 11 air suitable gasket material such as synthetic rubber Or inserted In the recess 9.

En cylinthisk ventilkropp 12 har nagot mindre tvarsektionsarea On ventiloppningens 8 tvarsektionsarea, sa. att den Or frigdende igenom ventiloppningen men samverkar med 0-ringen 11, som saledes tjanar som ventilsate for ventilkroppen 12. Denna ventilkropp 12 bildar ytteranden pa en ventilspindel 13, som har mindre tvarsektionsarea On ventilkroppens tvarsektionsarea, varvid ventilkroppen har en koniskt avsmalnande Overgangsdel emot ventilspindeln. Ventilspindeln 13 Or medelst en kolvformig del 14 med 0-ring 15 lagrad i en hylsa 16, som Or inskruvad i ventilhuset 4 och gastatt avtatad mot detsamma. Vid ventilspindelns 13 Overgang i den. kolvformiga delen 14 forefinnes en flans 17 for an-slag mot hylsans 16 inre aside och stod for en skruvfj Oder 18, som dessutom vilar mot stodbrickan 10. Den kolvformiga delen 14 nar ut ett kort stycke utanfOr hylsan 16 och mot densamma vilar en havarm 19. A cylindrical valve body 12 has a slightly smaller cross-sectional area on the cross-sectional area of the valve opening 8, said. that it ors freely through the valve opening but cooperates with the 0-ring 11, which thus serves as a valve set for the valve body 12. This valve body 12 forms the outer end of a valve stem 13, which has a smaller cross-sectional area on the valve body cross-sectional area, the valve body having a conically tapered. . The valve spindle 13 Or by means of a piston-shaped part 14 with O-ring 15 mounted in a sleeve 16, which Or is screwed into the valve housing 4 and gas-tapered against it. At the valve stem 13 Transition in it. the piston-shaped part 14 there is a flange 17 for abutment against the inner side of the sleeve 16 and stood for a screw spring 18, which also rests against the support washer 10. The piston-shaped part 14 extends a short distance outside the sleeve 16 and against it rests a sea arm 19 .

DO syrgas paslappes till skarbrannaren och de i ventilanordningen enligt uppfinningen ingaende delarna ha de i fig. 1 visade inbordes lagena, forefinnes syrgas under tryck i tilloppet 7 och ventilrummet 6, Iran vilket syrgasen icke kan stromma vidare till roret 5, eftersom 0-ringen 11 Mar mot ventiloppningsurtagningen 9 och mot ventilkroppen 12. Ej heller kan syrgasen bortga utmed den kolv- 2— — formiga delen 14, eftersom 0-ringen 15 tatar darstades. Om diametern hos kolvdelen 14 ar nagot storre an diameter. has ventilkroppen 12 verkar syrgastrycket for forskjutning av ventildelen 12-11 at hoger i fig. 1, dvs. for att hâlla ventilkroppen 12 i det slangande Inge, som fig. 1 visar. Om diametrarna hos delarna 12 och 14 aro lika blir ventildelen 12-14 balanserad och oberoende av variationer i gastrycket. Fjaderns 18 tryck verkar aven forskjutande av ventildelen 12-14 at hoger och hailer dessutom stodbrickan 10 med 0-ringen 11 kvar pa dess plats och verkar i riktning for att utbalansera havarmens 19 belastning pa kolvdelen. 14. Dessa hada tryck firo emellertid helt ringa, enar de icke sasom eljest ar vanligt behova pressa en tallriksformad ventilkropp i tat anliggning mot ett ventilsate, utan all tabling erhalles i stallet medelst 0-ringarna 11 resp. 15 mot de cylindriska ytorna. DO oxygen is fitted to the cutter burner and the parts included in the valve device according to the invention have the inboard layers shown in Fig. 1, there is oxygen under pressure in the inlet 7 and the valve space 6, Iran which the oxygen can not flow on to the pipe 5, because the 0-ring 11 Against the valve opening recess 9 and against the valve body 12. Nor can the oxygen escape along the piston-shaped part 14, since the O-ring 15 tars there. If the diameter of the piston part 14 is slightly larger than the diameter. has the valve body 12, the oxygen pressure for displacement of the valve part 12-11 acts to increase in Fig. 1, i.e. to hold the valve body 12 in the hose Inge, as shown in Fig. 1. If the diameters of the parts 12 and 14 are equal, the valve part 12-14 becomes balanced and independent of variations in the gas pressure. The pressure of the spring 18 also acts to displace the valve part 12-14 to the right and also lifts the standing washer 10 with the O-ring 11 in place and acts in the direction to balance the load of the sea arm 19 on the piston part. 14. However, these had pressures which were quite low, they do not, as is otherwise usual, have to press a plate-shaped valve body in close abutment against a valve seat, but all tabling is obtained in the stable by means of the 0-rings 11 and 11, respectively. Against the cylindrical surfaces.

For att oppna ventilen och framslappa syrgas till roret 5 beh6ver man trycka blott helt latt pa havarmen 19 i riktning mot handtaget 1, varvid ventilkroppen 12 forskjutes at vanster i fig. 1 i riktning mot roret 5, dvs. i den blivande stromningsriktningen fi5r gasen. Dá ventilkroppens 12 ingrepp med 0-ringen 11 upphor, är det den mot ventilspindeln 13 korriskt avsmalnande delen, som befinner sig i 0-ringens 11 oppning och alltefter som den,- na dels forskjutning at vanster fortsatter, akar den ringformiga spalten mellan den avsmalnande delen och 0-ringen kontinuerligt, tills ventilspindeln 13 befinner sig i 0-ringsoppningen, da den maximala genomstromningsarean for syrgasen uppnatts, sasom fig. 2 visar. Da saledes vid oppnandet dels ventilkroppen 12 ror sig i stromningsriktningen dels en jamn stromningsvag igenom den kontin:uerligt okande ventiloppningen for syrgasen bildas, sker en synnerligen jamn okning av syrgastillforseln till roret 5, tills maximalt varde erhallits. Detta Or hogst betydelsefullt for att erhalla god kvalitet p5. det snitt eller mejselspar, som gores medelst skarbrannaren. Eftersom ett blott ringa tryck erfordras for att trycka havarmen i riktning mot handtaget 1 och f6r att kvarhdlla havarmen i detta lage under hela skarningen eller mejslingen, fOrorsakar utovandet am detta tryck icke nagon nanmvard trotthetskansla has operatoren och den tidigare vanliga omstandliga fasthakningen ay havarmen i intryckt lage behOves icke. Da skarningen skall avslutas upphaves trycket pa havarmen 19, varvid syrgasens tryck pa ventilorganet 12-14 jamte fjaderns 18 tryck drager ventilkroppen 12 i stangande lage. Ave. harvid sker en kontinuerlig minskning av genomstromningsarean i ventilen till non och en jamn strypning ay syrgastillforseln till fordel for skarningen eller mej sling-en erhalles. In order to open the valve and release oxygen to the pipe 5, it is necessary to press only lightly on the sea arm 19 in the direction of the handle 1, the valve body 12 being displaced to the left in Fig. 1 in the direction of the pipe 5, i.e. in the future flow direction for the gas. When the engagement of the valve body 12 with the 0-ring 11 ceases, it is the part which tapers correctly towards the valve stem 13, which is located in the opening of the 0-ring 11 and as the displacement continues to the left, the annular gap between the tapered the part and the 0-ring continuously, until the valve stem 13 is in the 0-ring opening, when the maximum flow area for the oxygen gas has been reached, as Fig. 2 shows. Thus, when on the one hand the valve body 12 moves in the direction of flow and on an even flow path through the continuously increasing valve opening for the oxygen gas, an extremely even increase in the supply of oxygen to the tube 5 takes place, until a maximum value is obtained. This Or is highly important in order to obtain good quality p5. the cut or pair of chisels made by means of the torch. Since only a small pressure is required to push the lever in the direction of the handle 1 and to keep the lever in this position during the entire cutting or chiseling, the application of this pressure does not cause any fatigue failure in the operator and the previously usual circumferential hooking of the lever. make is not needed. When the cutting is to be completed, the pressure is raised on the sea arm 19, whereby the pressure of the oxygen on the valve member 12-14 together with the pressure of the spring 18 pulls the valve body 12 in the closing position. Ave. there is a continuous reduction of the flow area in the valve to the non and a uniform throttling of the oxygen supply in favor of the cutting or the me-loop is obtained.

Claims

Patent claim:

The present invention relates to a valve device in the chimney gas duct of a torch burner and is provided with a piston-shaped valve body, which is released through the valve opening, next to which an O-ring is present for co-operation with the valve body, and a valve stem having a piston-shaped guide part. which Or is stored in a guide sleeve inserted in the valve housing, and Or is tapered towards the guide sleeve by means of an O-ring. According to the invention Or the closing position of the valve, ie the valve body (12) Or in contact with the 0-ring (11) at the valve opening. (8), determined in that a flange (17) is arranged on the valve stem (13) next to the guide part (14) and with its one side rests against the guide sleeve (16) under the influence of an arrangement arranged around the valve stem (13) and against the flange (17). ) second side engaging compression springs (18) and the valve stem (13) Or axially displaceable against the action of the compression spring (18) while having the abutment of the flange (17) against the guide sleeve (16) for movement of the mentile body (12) through the valve opening (8) and i the direction of the gas stream to the upper layer.

In the device according to claim 1, the control part (14) of the valve stem (13) reaches a short distance outside the guide sleeve: (16) for co-operation with a salt arm (19) pivotable on the edge and for displacement of the valve body (12) to the open bearing. contact with the 0-ring (11) next to the valve opening (8) by depressing the lever (19) in the direction of the cutter burner handle (1).

In a device according to claim 1 or 2, the valve opening (&) widens conically in the direction of the gas flow hour and the valve body (12) Or tapered to the same degree conically towards the valve stem (13).

In the case of a device according to patent claim 1, 2 or 3, one. recess (9) arranged next to the cradle of the valve opening (8) to leave space and a side stand for the 0-ring (11) and a displaceably arranged stand washer (10), Or arranged as a second side stand for the 0-ring (11) and serves as stood for the compression spring (18).

In the case of a device according to claim 1, 2, 3 or 4, the diameters have the valve body (12) and the piston-shaped control part (14) completely or almost equal so that variations in the gas pressure should have no or no displacing effect on it. said parts (12, 14). Request publications: Pat entskrifter fron France 542 601, 1 150 154; Switzerland 322 401.