WO1993010382A1 - Dispositif d'obturation destine a des valves - Google Patents

Dispositif d'obturation destine a des valves Download PDF

Info

Publication number
WO1993010382A1
WO1993010382A1 PCT/SE1992/000789 SE9200789W WO9310382A1 WO 1993010382 A1 WO1993010382 A1 WO 1993010382A1 SE 9200789 W SE9200789 W SE 9200789W WO 9310382 A1 WO9310382 A1 WO 9310382A1
Authority
WO
WIPO (PCT)
Prior art keywords
sealing device
valve
sealing
central portion
openings
Prior art date
Application number
PCT/SE1992/000789
Other languages
English (en)
Inventor
Björn SANDSTRÖM
Original Assignee
Medicvent Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Medicvent Ab filed Critical Medicvent Ab
Publication of WO1993010382A1 publication Critical patent/WO1993010382A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/072—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members
    • F16K11/074—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members with flat sealing faces

Definitions

  • This invention relates to a valve arrangement for valves of the i 5 kind including to mutually displaceable part of which one, which can form a valve house, presents at least one opening connected to an external channel and the other part, which can be a valve body, includes at least one in and out of tightening engagement against such opening displaceable sealing means and 10 in which the displacement essentially is in directions essentially in parallel with or radial to the plane of the opening.
  • valves for flow 15 control wherein one valve housing surface localized in a radial plane shows at least one opening whereas a valve body displaceable essentially linearly relativly to the surface and essentially in parallel with the plane of the opening, or rotatably has at least one sealing means adapted to engage said 20 opening.
  • This invention especially relates to valves included in anaestetic systems and other medical apparatuses where there is a demand for simple dismantling and assembly and where there 25 are high demands on tightness.
  • Valves of the kind mentioned above are known in many designs and common to them all is that the valv body sealing means on
  • valve 30 both opening and closing passes sidewise over or by the edge of one or more openings at the valve house wall.
  • the valve is arranged as a cock or a ball valve there are no true sealing means as the tighteing is achieved by the valve body, the cock or the ball closely and fitting adhering to the
  • valves 35 wall of the valve house shaped in a complementary way.
  • Cock or ball valves can be left out of discussion.
  • the openings leading to external channels where equiped with bars or grids facilitating the passage of the sealing means in over and by the openings.
  • the sealing means is adapted to sealingly engage the smoth surface surounding the opening which puts high demands on contact pressure and results in increasing the force necessary to set said valve in a non acceptable way.
  • One aspect of the invention is to bring about a valve so arranged that it gives little resistance on setting and has a good sealing ability inspite of moderate contact pressure.
  • Another aspect of this invention is to bring about a valve device easy to manufacture and maintenance and so arranged that it for this disinfection purposes or the like is easily dismanteld and assembled again.
  • a sealing means is equiped with a sliding and guiding body adapted to facilitate the movement during the motion of the sealing means along opposite surfaces beyond one or more openings and keep the true sealing at a distance from the opposite surface and during the movement of the sealing means to and from sealing position at an opening guide the true sealing of the sealing means by the edge of the opening.
  • a sliding and guiding body is axially displaceable it will bias the sealing surrounding the sliding body so that after arrival of the sealing means in to an opening closing position it will resiliantly move a little outwardly and enhance the pressing of the sealing towards the surrounding edge of the opening.
  • On displacing the sealing means from its opening closing position the guiding body will slide up on the edge of the opening and simultaneously press the true sealing inwardly so that it will not drag against the surface adjacent the opening.
  • Fig 1 is a schematical axial sectional view through one embodiment choosen as an example of a valve arrangement according to the invention.
  • Fig 2 is similar radial sectional view of same valve.
  • Fig 3 is a schematical elevated section of a modified embodiment of the sealing means.
  • Fig 4 is a schematical perspective view illustrating a modified embodiment of a valve arrangement according to this invention.
  • valve shown in figures 1 and 2 and choosen as an example is made as a three-ports-two-ways valve and has a valve housing
  • valve body 9 Inside the valve chamber there is a valv body 9 limitedly rotatable.
  • the valve body 9 has two axially arranged channels 10 resp. 11 opening up at the flat bottom surface 12 and these communicate inside the valve body with a crosswise arranged channel 13, which may be left open sideways towards the mantle of the valve body.
  • a sealing device 15 is arranged at the bottom surface of the valve body.
  • the two channels 10 and 11 and the sealing device 15 are symetrically localised in the same way as the openings 4, 5 and 6.
  • the valve body 9 has along part of its mantle surface projecting into the valve housing a friction surface reducing circum- ferential recess 16 defining an inner and an outer guiding edge 17 resp 18 and a latter presents a circumferential groove for an 0-ring 19 sealing against the wall of the chamber.
  • a friction surface reducing circum- ferential recess 16 defining an inner and an outer guiding edge 17 resp 18 and a latter presents a circumferential groove for an 0-ring 19 sealing against the wall of the chamber.
  • a groove 20 into which a locking and guiding screw 21 threaded through the wall of the chamber, will engage partly in order to keep the valve body in its place and partly to limit the rotating movement of the same.
  • the sealing device 15 includes the true sealing 22 which is made of an appropriate elastomeric material such as teflone and is shaped like a slightly domed disc having a central opening 23.
  • the outer edge can be arranged with a bead like thickening and is intended to be received in an annular groove 24 arranged at the outermost portion of the recess 14 where only a thin material portion lies between the groove 24 and the endface of the valved body.
  • the guiding and sliding body 25 is attached to the sealing ring 22 and includes a shaft portion 26 and a dubble head 27 formed by two axially spaced discs integral with the shaft.
  • the sealing plate or ring 22 is to be threaded onto the guiding and sliding body so that the edge portion surrounding the central opening 23 of the annular sing 22 projects into the annular space 28 between the two head plates.
  • the guiding and sliding body shaft 26 is received in a bottom bore 29 in the recess 14 and a compression spring 30 is put between the head 27 and the bottom of the recess 14 in order to keep the sealing device 15 in an outwardly displaced possition.
  • a pressure equalizing channel 31 having the purpose to prevent the generation of superpressure or under ⁇ pressure inside the plate 22 making the movement of the plate and the sealing difficult.
  • This channel may be narrow for underpressure systems where it only acts as a pressure equalizer but given greater area for superpressure system in order to make it possible to use this channel also for pressure medium biassing the sealing device contact pressure.
  • the sealing device By rotating the valve body between the two ends of the guiding groove the sealing device will be moved between two of the openings at the bottom of the valve chamber whereby the flow will be switched from the one to the other direction.
  • the guiding and sliding body 25 On setting or adjusting the valve, the guiding and sliding body 25, having insignificantly smaller diameter than the openings, will practically immediately meet the edge of the opening and slide up on this and simultaneously lift the true sealing out of engagement with the edge.
  • the head of the guiding and sliding body On the arrival of the sealing device at next opening the head of the guiding and sliding body will support the true sealing and keep it at a distance from the edge of the opening until an approximately centered possition has been reached.
  • a sealing device 15' according to Figure 3 differs from the one already described in that the sliding body 25 shaft 26' has a greater radial extension than the earlier described one for the reason that a channel 33 extends through the same and opens up in the hole of the valve body into which the shaft 26' is received and axially displaceable.
  • a channel or the like communicating with the said hole into which the shaft 26' extends and said channel is so arranged that medium passing through the shaft channel 33 in an appropriate way can be diverted on.
  • FIG. 3 The embodyment regarding to Figure 3 can be utilized where for example a number of input channels debouch at the bottom of the valve housing each channel leading to or from a medium container or the like and a rotatable valve body having preferably as many sealing devices as the number of such input channel openings, wherein of the sealing devices the ones through which medium is allowed to pass axially, on a given setting possition, are arranged as the sealing device 15', i.e. with a through channel 33.
  • Such an arrangement allows selective leading through of one or more mediae to one or more receivers and allowes quick switching with insignificant wear of the true sealing ⁇ 22 as those will not drag against opposite surfaces but be kept at a distance from this by the sliding bodies.
  • sealing devices are intended to act in an other direction than the one mentioned already.
  • a valve house 1' there is a preferably through bore 2' and into this three narrower bores 4' and 5' respectively open.
  • a valve body 9' has a radial through bore 10' and a recess in which a sealing device 15 or 15' is arranged. By rotating the valve body 9' a number of different flow paths may be established and closed respectively and one by one be closed and sealed off.
  • the arrangement according to the invention is useful for a number of types of valves where a valve body with one or more openings and any connecting channels is displaced relatively to a surface of a valve housing or the like with one or more openings with or without internal connections and where it is desired after choice to close one or more of the openings.
  • Valves arranged according to the above are preferably connected up in such a way that the system pressure acts in the closing direction of the sealing devices so that leaked by medium will press the sealing devices harder against the edge of the opening.
  • the device is mounted the opposite way an additional pressing force will have to be compensated by stronger springs at the guiding and sliding body. This is true especially at under pressure systems. At super pressure systems the spring even can be left out as the inherent elasticity of the sealing ring will be utilized together with the pressure acting in closing direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding Valves (AREA)
  • Taps Or Cocks (AREA)
  • Multiple-Way Valves (AREA)

Abstract

On décrit un modèle de valve, du type pousseur, coulissant ou rotatif, où le corps de valve se déplace par rapport à un logement de valve afin d'ouvrir ou de fermer le passage aux fluides. La nouveauté réside en ce que l'une ou l'autre partie est dotée d'une ou plusieurs ouvertures (4, 5, 6) communiquant avec des conduites, voies, etc., alors que l'autre partie comporte aussi une ou plusieurs ouvertures (10, 11) mais au moins aussi un dispositif d'obturation (15) qui comprend un corps d'obturation pouvant se déployer ou se rétracter par rapport à un évidement situé vers l'arrière. Ce dispositif d'obturation présente aussi une partie centrale, constituée d'un matériau rigide à faible taux de friction, dont un secteur s'adapte étroitement à au moins une ouverture située de l'autre côté de la valve et entourée par une rondelle (22) composée d'un matériau élastomère ou similaire qui engage de manière étanche à la fois la partie centrale et les parties (9) qui entourent l'évidement (14).
PCT/SE1992/000789 1991-11-22 1992-11-17 Dispositif d'obturation destine a des valves WO1993010382A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9103466-0 1991-11-22
SE9103466A SE469440B (sv) 1991-11-22 1991-11-22 Anordning vid ventil

Publications (1)

Publication Number Publication Date
WO1993010382A1 true WO1993010382A1 (fr) 1993-05-27

Family

ID=20384409

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1992/000789 WO1993010382A1 (fr) 1991-11-22 1992-11-17 Dispositif d'obturation destine a des valves

Country Status (3)

Country Link
AU (1) AU3053392A (fr)
SE (1) SE469440B (fr)
WO (1) WO1993010382A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7213547B2 (en) 2004-12-14 2007-05-08 Massachusetts Institute Of Technology Valve
WO2017085948A1 (fr) * 2015-11-20 2017-05-26 Smc株式会社 Valve de commutation
RU2714714C1 (ru) * 2019-03-25 2020-02-19 Общество с ограниченной ответственностью "Константа-2" Клапан предохранительный (варианты)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1108026B (de) * 1957-08-17 1961-05-31 Erich Herion Drehschieber, insbesondere Vierwegeschieber, mit einem zwischen zwei feststehenden Gehaeuseteilen drehbaren Verschlussstueck
EP0050550A1 (fr) * 1980-10-17 1982-04-28 Commissariat à l'Energie Atomique Vanne à passage direct et à commande rotative
DE3705397A1 (de) * 1987-02-20 1988-09-01 Sotralentz Sa Schieber mit schiebergehaeuse, schieberplatte und betaetigungseinrichtung fuer die schieberplatte

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1108026B (de) * 1957-08-17 1961-05-31 Erich Herion Drehschieber, insbesondere Vierwegeschieber, mit einem zwischen zwei feststehenden Gehaeuseteilen drehbaren Verschlussstueck
EP0050550A1 (fr) * 1980-10-17 1982-04-28 Commissariat à l'Energie Atomique Vanne à passage direct et à commande rotative
DE3705397A1 (de) * 1987-02-20 1988-09-01 Sotralentz Sa Schieber mit schiebergehaeuse, schieberplatte und betaetigungseinrichtung fuer die schieberplatte

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7213547B2 (en) 2004-12-14 2007-05-08 Massachusetts Institute Of Technology Valve
TWI680248B (zh) * 2015-11-20 2019-12-21 日商Ｓｍｃ股份有限公司 切換閥
KR20180085767A (ko) * 2015-11-20 2018-07-27 에스엠시 가부시키가이샤 전환 밸브
CN108474487A (zh) * 2015-11-20 2018-08-31 Smc株式会社 切换阀
JPWO2017085948A1 (ja) * 2015-11-20 2018-09-06 Smc株式会社 切換バルブ
US20180335152A1 (en) * 2015-11-20 2018-11-22 Smc Corporation Switching valve
WO2017085948A1 (fr) * 2015-11-20 2017-05-26 Smc株式会社 Valve de commutation
CN108474487B (zh) * 2015-11-20 2020-01-24 Smc株式会社 切换阀
KR102157212B1 (ko) * 2015-11-20 2020-09-17 에스엠시 가부시키가이샤 전환 밸브
US10859172B2 (en) 2015-11-20 2020-12-08 Smc Corporation Switching valve
JP2020200949A (ja) * 2015-11-20 2020-12-17 Smc株式会社 切換バルブ
JP2020200950A (ja) * 2015-11-20 2020-12-17 Smc株式会社 切換バルブ
DE112016005328B4 (de) 2015-11-20 2023-04-20 Smc Corporation Schaltventil
RU2714714C1 (ru) * 2019-03-25 2020-02-19 Общество с ограниченной ответственностью "Константа-2" Клапан предохранительный (варианты)

Also Published As

Publication number Publication date
SE9103466L (sv) 1993-05-23
SE9103466D0 (sv) 1991-11-22
SE469440B (sv) 1993-07-05
AU3053392A (en) 1993-06-15

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