DE688253C - Closing valve for containers, especially for oxygen bottles for breathing apparatus - Google Patents

Closing valve for containers, especially for oxygen bottles for breathing apparatus

Info

Publication number
DE688253C
DE688253C DE1936D0072923 DED0072923D DE688253C DE 688253 C DE688253 C DE 688253C DE 1936D0072923 DE1936D0072923 DE 1936D0072923 DE D0072923 D DED0072923 D DE D0072923D DE 688253 C DE688253 C DE 688253C
Authority
DE
Germany
Prior art keywords
valve
containers
breathing apparatus
closing valve
spring
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.)
Expired
Application number
DE1936D0072923
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.)
Draegerwerk AG and Co KGaA
Original Assignee
Draegerwerk AG and Co KGaA
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 Draegerwerk AG and Co KGaA filed Critical Draegerwerk AG and Co KGaA
Priority to DE1936D0072923 priority Critical patent/DE688253C/en
Application granted granted Critical
Publication of DE688253C publication Critical patent/DE688253C/en
Expired legal-status Critical Current

Links

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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/30—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers
    • F16K1/301—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers only shut-off valves, i.e. valves without additional means
    • F16K1/302—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers only shut-off valves, i.e. valves without additional means with valve member and actuator on the same side of the seat

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)

Description

Verschlußventil für Behälter, insbesondere für Sauerstoffflaschen von Atemschutzgeräten Es sind schon Verschlußventile bekannt, bei denen die Spindel mit einer nach außen abdichtenden schlauchförmigen Membran umgeben ist. Diese haben aber den Nachteil, daß der auf der Balgfläche lastende Druck, der vom Gewinde der Spindel aufgenommen wird, zur Schwergängigkeit des Ventils führt. Für Hochdruck waren derartige Ventile aus diesem Grunde bisher nicht verwendbar.Closure valve for containers, in particular for oxygen bottles of respiratory protective devices There are already known shut-off valves in which the spindle is surrounded by an outwardly sealing tubular membrane. Have this but the disadvantage that the pressure on the bellows surface caused by the thread of the Spindle is added, leads to stiffness of the valve. For high pressure For this reason, such valves were previously not usable.

Dieser Nachteil wird erfindungsgemäß dadurch beseitigt, daß zur Entlastung der Spindel von dem in axialer Richtung auf sie wirkenden Behälterinnendruckeine diesem Druck entgegengesetzt wirkende Feder vorgesehen ist, Man kann dabei in vorteilhafter Weise die Spannung der Entlastungsfeder durch eine auf den Ventilteller aufgeschraubte Mutter einstellen.This disadvantage is eliminated according to the invention in that for relief the spindle from the internal container pressure acting on it in the axial direction This pressure counteracting spring is provided, one can in this case in advantageous Way, the tension of the relief spring by a screwed onto the valve disc Adjust nut.

Die Anordnung der Entlastungsfeder hat noch einen weiteren Vorteil. Nach dem Schließen des Ventils strömt der Hochdruck aus der Ventilkammer heraus; infolgedessen fällt die Kraft, die vorher den Membrankörper zusammendrückte und der Federspannung entgegenwirkte, fort. Es bleibt also nur noch die in der Schließrichtung wirkende Federkraft übrig. Dieser Federkraft wirkt nur noch der Flaschendruck, multipliziert mit der Fläche des Ventilsitzes, entgegen. Dieser Druck ist aber viel geringer als derjenige auf den Membranbalg, da die Fläche des Ventil-Sitzes kleiner ist als der Querschnitt des Membranbalges. Die Belastungsfeder überwindet nun allein den Schließdruck des Ventils, wodurch eine wesentliche Sicherheit erreicht wird: Man kann sogar das Handrad um etwa r/4 Drehung in der öffnungsrichtung zurückdrehen, ohne daß das Ventil geöffnet wird. Dann ist aber die Spindel gänzlich druck- und torsionsfrei.: Auf der Zeichnung ist eine Ausführungsform des neuen Verschlußventils dargestellt. Dabei bezeichnet a das Ventilgehäuse mit dem am Ventilsitze endenden Hochdruckkanal b. Die Ventilkammer d wird von der Kopfschraube e verschlossen, die den Membranbalg t trägt. Im Membranbälg f sitzt die Spindel g, die am oberen Ende mit Gewinde versehen ist. Der den Dichtpflocki tragende Ventilteller k ist mit dem Membranbalg fest verbunden. Die Spindel g und der auf ihr befestigte Teller 1z sind gegeneinander drehbar. k ist die Entlastungsfeder, die den Ventilteller k auf den Ventilsitze drückt. Die Spannung der Feder wird durch die Mutter in geregelt, die mittels der Gegenmuttern festgelegt wird.The arrangement of the relief spring has another advantage. After closing the valve, the high pressure flows out of the valve chamber; As a result, the force that previously compressed the membrane body and counteracted the spring tension disappears. So all that remains is the spring force acting in the closing direction. This spring force is only counteracted by the cylinder pressure multiplied by the area of the valve seat. However, this pressure is much lower than that on the diaphragm bellows, since the area of the valve seat is smaller than the cross section of the diaphragm bellows. The loading spring only overcomes the closing pressure of the valve, which achieves a substantial degree of safety: you can even turn the handwheel back about r / 4 turn in the opening direction without opening the valve. But then the spindle is completely free of pressure and torsion. The drawing shows an embodiment of the new shut-off valve. A designates the valve housing with the high pressure channel b ending at the valve seat. The valve chamber d is closed by the cap screw e, which carries the diaphragm bellows t. The spindle g, which is provided with a thread at the upper end, is seated in the diaphragm bellows f. The valve disk k carrying the sealing peg is firmly connected to the diaphragm bellows. The spindle g and the plate 1z attached to it can be rotated relative to one another. k is the relief spring that presses the valve disk k onto the valve seats. The tension of the spring is regulated by the nut in, which is fixed by means of the lock nuts.

Bei geöffnetem Ventil wirkt auf die Spindel g in einer Richtung Flaschendruck mal Querschnitt des Membranbalges, in der arideren Richtung die entsprechend starke Entlastungsfeder.When the valve is open, cylinder pressure acts on the spindle g in one direction times the cross-section of the diaphragm bellows, in the other direction the correspondingly strong one Relief spring.

Claims (2)

PATENTANSPRÜCHE: i. Verschlußventil für Behälter, insbesondere für Sauerstoffflaschen von Atemschutzgesäten, mit einer die Betätigungsspindel umgebenden und nach außen abdichtenden schlauchförmigen Membran, dadurch gekennzeichnet, daß zur Entlastung der Spindel (g) von dem in axialer Richtung auf sie wirkenden Behälterinnendruck eine diesem Druck entgegengesetzt wirkende Feder (k) vorgesehen ist. PATENT CLAIMS: i. Closure valve for containers, in particular for oxygen bottles for breathing apparatus, with a tubular membrane surrounding the actuating spindle and sealing to the outside, characterized in that a spring (k ) is provided. 2. Verschlußventil nach Anspruch i, dadurch gekennzeichnet, daß die Spannung der Entlastungsfeder (k) durch eine auf den Ventilteller (h) aufgeschraubte Mutter (in) .einstellbar ist.2. Shut-off valve according to claim i, characterized in that the tension of the relief spring (k) adjustable by means of a nut (in) screwed onto the valve plate (h).
DE1936D0072923 1936-06-14 1936-06-14 Closing valve for containers, especially for oxygen bottles for breathing apparatus Expired DE688253C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1936D0072923 DE688253C (en) 1936-06-14 1936-06-14 Closing valve for containers, especially for oxygen bottles for breathing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1936D0072923 DE688253C (en) 1936-06-14 1936-06-14 Closing valve for containers, especially for oxygen bottles for breathing apparatus

Publications (1)

Publication Number Publication Date
DE688253C true DE688253C (en) 1940-02-16

Family

ID=7061246

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1936D0072923 Expired DE688253C (en) 1936-06-14 1936-06-14 Closing valve for containers, especially for oxygen bottles for breathing apparatus

Country Status (1)

Country Link
DE (1) DE688253C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1299229B (en) * 1967-01-18 1969-07-10 Draegerwerk Ag Shut-off valve for respiratory protection device
US5165652A (en) * 1990-11-16 1992-11-24 Danfoss A/S Electromagnetic valve having a throttle path connected to a damping chamber
DE19751678A1 (en) * 1997-11-21 1999-06-02 Messer Griesheim Gmbh Residual pressure valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1299229B (en) * 1967-01-18 1969-07-10 Draegerwerk Ag Shut-off valve for respiratory protection device
US5165652A (en) * 1990-11-16 1992-11-24 Danfoss A/S Electromagnetic valve having a throttle path connected to a damping chamber
DE19751678A1 (en) * 1997-11-21 1999-06-02 Messer Griesheim Gmbh Residual pressure valve

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