DE1295939B - Sealing arrangement for a rotary valve with a ball-shaped shut-off body - Google Patents

Sealing arrangement for a rotary valve with a ball-shaped shut-off body

Info

Publication number
DE1295939B
DE1295939B DE1964B0079962 DEB0079962A DE1295939B DE 1295939 B DE1295939 B DE 1295939B DE 1964B0079962 DE1964B0079962 DE 1964B0079962 DE B0079962 A DEB0079962 A DE B0079962A DE 1295939 B DE1295939 B DE 1295939B
Authority
DE
Germany
Prior art keywords
shut
annular
sealing arrangement
overpressure
rotary valve
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
DE1964B0079962
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE1964B0079962 priority Critical patent/DE1295939B/en
Publication of DE1295939B publication Critical patent/DE1295939B/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0621Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor with a spherical segment mounted around a supply pipe

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)

Description

Die Erfindung betrifft eine Dichtungsanordnung für einen Drehschieber, dessen kugelschalenförmiger Absperrkörper wechselweise von beiden Seiten durch Überdruck beaufschlagbar ist, mit einem ringkolbenartigen, einen Dichtungsring gegen den Absperrkörper pressenden Dichtungsträger, der auf seiner Rückseite mit dem Schiebergehäuse eine Ringkammer einschließt, die, mit den Druckräumen beiderseits des Absperrkörpers in Verbindung stehend, mittels einer Ventileinrichtung von dem jeweiligen Überdruck beaufschlagt und gegen den niederen Druck abgesperrt wird.The invention relates to a sealing arrangement for a rotary valve, its spherical shell-shaped shut-off body alternately from both sides by overpressure can be acted upon with an annular piston-like sealing ring against the shut-off body pressing seal carrier, which on its back with the valve housing a The annular chamber includes, with the pressure chambers on both sides of the shut-off body standing in connection, by means of a valve device of the respective overpressure is applied and blocked against the low pressure.

Diese Dichtungsanordnung besorgt die Abdichtung des den ringkolbenartig ausgebildeten Dichtungsträger mit seiner Dichtung gegen den kugelschalenförmigen Absperrkörper pressenden Mediums gegenüber der jeweils druckfreien Seite. Die Zuführung des Mediums zu den Ringflächen des Dichtungsträgers an denen sich jeweils der Anpreßdruck aufbaut, erfolgt durch Bohrungen oder Aussparungen.This sealing arrangement ensures the sealing of the ring piston-like trained seal carrier with its seal against the spherical shell-shaped Shut-off body pressing the medium opposite the respective pressure-free side. The feed of the medium to the annular surfaces of the seal carrier on each of which the contact pressure builds up, takes place through holes or recesses.

Es ist bekannt, derartige Dichtungsträger gegenüber dem Schiebergehäuse durch Ringdichtungen mit vornehmlich rechteckigem Querschnitt abzudichten. Dies bedingt jedoch sauber und riefenfrei bearbeitete Gleitflächen. Außerdem sind diese Abdichtungen bei Verschmutzung des Mediums, insbesondere in körniger Form, bereits störungsanfällig. Das gilt auch für die bekannten O-Ring-Dichtungen.It is known to have such a seal carrier with respect to the valve housing to be sealed with ring seals with a predominantly rectangular cross-section. this However, the sliding surfaces must be machined cleanly and without scoring. Besides, these are Seals in the event of contamination of the medium, especially in granular form, already prone to failure. This also applies to the well-known O-ring seals.

Weiterhin ist bekannt, den Überdruck, der den Dichtungsträger beaufschlagt, durch ein Kugelventil gegenüber der jeweils druckfreien Seite abzusperren. Auch die Funktion derartiger Kugelventile ist in Frage gestellt, wenn das abzudichtende Medium körnige Verschmutzung aufweist.It is also known that the overpressure that acts on the seal carrier, shut off by a ball valve opposite the respective pressure-free side. Even the function of such ball valves is called into question if that is to be sealed Medium has granular contamination.

Der Erfindung liegt die Aufgabe zugrunde, eine Dichtungsanordnung zu schaffen, die keine besondere Bearbeitung der abzudichtenden Flächen voraussetzt und auch bei verschmutztem Medium nicht störungsanfällig ist.The invention is based on the object of a sealing arrangement to create that does not require any special processing of the surfaces to be sealed and is not susceptible to failure even with contaminated media.

Diese Aufgabe wird ausgehend von einer Dichtungsanordnung der eingangs genannten Art erfindungsgemäß dadurch gelöst, daß der ringkolbenartige Dichtungsträger in an sich bekannter Weise als Stufenkolben ausgebildet ist und daß als Ventileinrichtung eine den Querschnitt der Ringkammer etwa diagonal durchsetzende schlaffe Ringmembran vorgesehen ist, die sich unter Wirkung des jeweiligen Überdruckes an eine Stirnfläche und eine Zylinderfläche der Ringkammer anlegt und dabei die Verbindung zum jeweiligen Raum niederen Druckes abdichtet. In der Zeichnung ist ein Ausführungsbeispiel der Erfindung an einem längsgeschnittenen Drehschieber in zwei Betriebsstellungen gezeigt.This task is based on a sealing arrangement of the opening mentioned type according to the invention achieved in that the annular piston-like seal carrier is designed in a manner known per se as a stepped piston and that as a valve device a slack annular membrane penetrating the cross-section of the annular chamber approximately diagonally is provided, which is under the action of the respective overpressure on an end face and creates a cylindrical surface of the annular chamber and thereby the connection to the respective Seals low pressure space. In the drawing is an embodiment of the Invention shown on a longitudinally sectioned rotary valve in two operating positions.

Gegen den in dem Schiebergehäuse 1 von außen um 90° schwenkbar angeordneten kugelschalenförmigen Absperrkörper 3 wird der Dichtungsträger 4 mit seinem elastischen Dichtungsring 6 durch den Druck des Mediums angepreßt. Je nach der Strömungsrichtung des Mediums, die in der oberen Hälfte der Figur durch den Richtungspfeil von recht nach links und in deren unteren Hälfte von links nach recht an -edeutet ist, wird die schlaffe Ringmembran 12 aus Gummi oder Kunststoff von dem unter Druck stehenden Medium im ersten Fall durch radial angeordnete Bohrungen 13 hindurch gegen die Stirnflächen des Ringkolbens 4 so angepreßt, daß sie die nach der dann drucklosen Zone weisenden Bohrungen 11 verschließt, während sie dann, wenn der Mediumdruck umgekehrt verläuft, umklappt und jetzt durch das, durch die Bohrungen 11 eintretende Medium vor die radialen Bohrungen 13 geklappt wird und diese absperrt. Da diese Dichtung keine gleitende oder rollende Bewegung ausführt, kann sie durch Schmutz im Medium in ihrer Funktion kaum behindert werden.The seal carrier 4 with its elastic sealing ring 6 is pressed by the pressure of the medium against the spherical shell-shaped shut-off body 3, which is arranged in the valve housing 1 so as to be pivotable by 90 ° from the outside. Depending on the direction of flow of the medium, which is indicated in the upper half of the figure by the directional arrow from right to left and in the lower half from left to right, the slack annular membrane 12 made of rubber or plastic is removed from the pressurized medium in the first case pressed through radially arranged bores 13 against the end faces of the annular piston 4 so that it closes the bores 11 pointing towards the then pressureless zone, while when the medium pressure is reversed, it folds over and now through the, through the bores 11 entering medium is folded in front of the radial bores 13 and shuts them off. Since this seal does not perform any sliding or rolling movement, it can hardly be hindered in its function by dirt in the medium.

Claims (1)

Patentanspruch: Dichtungsanordnung für einen Drehschieber, dessen kugelschalenförmiger Absperrkörper wechselweise von beiden Seiten durch Überdruck beaufschlagbar ist, mit einem ringkolbenartigen, einen Dichtungsring gegen den Absperrkörper pressenden Dichtungsträger, der auf seiner Rückseite mit dem Schiebergehäuse eine Ringkammer einschließt, die, mit den Druckräumen beiderseits des Absperrkörpers in Verbindung stehend, mittels einer Ventileinrichtung von dem jeweiligen Überdruck beaufschlagt und gegen den niederen Druck abgesperrt wird, d a d u r c h g e k e n n -z e i c h n e t, daß der Ringkolben in an sich bekannter Weise als Stufenkolben (4) ausgebildet ist und daß als Ventileinrichtung eine den Querschnitt der Ringkammer etwa diagonal durchsetzende, schlaffe Ringmembran (12) vorgesehen ist, die sich unter Wirkung des jeweiligen überdruckes an eine Stirnfläche und eine Zylinderfläche der Ringkammer anlegt und dabei die Verbindung zum jeweiligen Raum niederen Druckes absperrt.Claim: Sealing arrangement for a rotary valve whose Cup-shaped shut-off body alternately from both sides by overpressure can be acted upon with an annular piston-like sealing ring against the shut-off body pressing seal carrier, which on its back with the valve housing a The annular chamber includes, with the pressure chambers on both sides of the shut-off body standing in connection, by means of a valve device of the respective overpressure is applied and shut off against the low pressure, d u r c h g e k e n n -z e i c h n e t that the annular piston in a known manner as a stepped piston (4) is formed and that the cross section of the annular chamber as a valve device approximately diagonally penetrating, slack annular membrane (12) is provided, which is under the effect of the respective overpressure on an end face and a cylinder face the annular chamber and thereby the connection to the respective room of low pressure shut off.
DE1964B0079962 1964-12-31 1964-12-31 Sealing arrangement for a rotary valve with a ball-shaped shut-off body Pending DE1295939B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1964B0079962 DE1295939B (en) 1964-12-31 1964-12-31 Sealing arrangement for a rotary valve with a ball-shaped shut-off body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1964B0079962 DE1295939B (en) 1964-12-31 1964-12-31 Sealing arrangement for a rotary valve with a ball-shaped shut-off body

Publications (1)

Publication Number Publication Date
DE1295939B true DE1295939B (en) 1969-05-22

Family

ID=6980525

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1964B0079962 Pending DE1295939B (en) 1964-12-31 1964-12-31 Sealing arrangement for a rotary valve with a ball-shaped shut-off body

Country Status (1)

Country Link
DE (1) DE1295939B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4962911A (en) * 1990-03-27 1990-10-16 Soderberg Research & Development, Inc. Hemi-wedge valve

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE657146C (en) * 1938-02-25 Heinrich Kniepkamp Dipl Ing Lubricated roller bearings for caterpillars
CH268772A (en) * 1948-06-28 1950-05-31 Von Roll Ag Rotary valve used to close pipelines.
DE893761C (en) * 1943-10-29 1953-10-19 Daimler Benz Ag Sealing for shafts oscillating in the direction of rotation about their longitudinal axis, especially for motor vehicle shock absorbers
DE907961C (en) * 1941-12-05 1954-04-01 Jean Louis Gratzmuller Shut-off valve especially for fluids under high pressure
GB729893A (en) * 1953-10-17 1955-05-11 Parker Appliance Co Improvements in or relating to valves
DE1023644B (en) * 1954-02-23 1958-01-30 Goetzewerke Slip ring seal with a slip ring pressed against the counter surface by a spring
GB797467A (en) * 1956-05-15 1958-07-02 Sealol Corp Sealing means for two relatively rotatable parts
DE1055905B (en) * 1958-01-22 1959-04-23 Otto Meyer Shut-off device, in particular cock, with an annular piston as a seal, which is slidably mounted in the housing
FR1213058A (en) * 1958-10-24 1960-03-29 Neyrpic Ets Improvements to movable sealing devices for valves
DE1093157B (en) * 1958-08-11 1960-11-17 Neue Argus Gmbh Stopcock with ball plug and a piston sealing ring mounted on one side in a groove in the stopcock housing

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE657146C (en) * 1938-02-25 Heinrich Kniepkamp Dipl Ing Lubricated roller bearings for caterpillars
DE907961C (en) * 1941-12-05 1954-04-01 Jean Louis Gratzmuller Shut-off valve especially for fluids under high pressure
DE893761C (en) * 1943-10-29 1953-10-19 Daimler Benz Ag Sealing for shafts oscillating in the direction of rotation about their longitudinal axis, especially for motor vehicle shock absorbers
CH268772A (en) * 1948-06-28 1950-05-31 Von Roll Ag Rotary valve used to close pipelines.
GB729893A (en) * 1953-10-17 1955-05-11 Parker Appliance Co Improvements in or relating to valves
DE1023644B (en) * 1954-02-23 1958-01-30 Goetzewerke Slip ring seal with a slip ring pressed against the counter surface by a spring
GB797467A (en) * 1956-05-15 1958-07-02 Sealol Corp Sealing means for two relatively rotatable parts
DE1055905B (en) * 1958-01-22 1959-04-23 Otto Meyer Shut-off device, in particular cock, with an annular piston as a seal, which is slidably mounted in the housing
DE1093157B (en) * 1958-08-11 1960-11-17 Neue Argus Gmbh Stopcock with ball plug and a piston sealing ring mounted on one side in a groove in the stopcock housing
FR1213058A (en) * 1958-10-24 1960-03-29 Neyrpic Ets Improvements to movable sealing devices for valves

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4962911A (en) * 1990-03-27 1990-10-16 Soderberg Research & Development, Inc. Hemi-wedge valve
WO1991014892A1 (en) * 1990-03-27 1991-10-03 Soderberg Research & Development, Inc. Hemi-wedge valve

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