EP0107740A1 - Soupape à plusieurs voies - Google Patents

Soupape à plusieurs voies Download PDF

Info

Publication number
EP0107740A1
EP0107740A1 EP82110000A EP82110000A EP0107740A1 EP 0107740 A1 EP0107740 A1 EP 0107740A1 EP 82110000 A EP82110000 A EP 82110000A EP 82110000 A EP82110000 A EP 82110000A EP 0107740 A1 EP0107740 A1 EP 0107740A1
Authority
EP
European Patent Office
Prior art keywords
valve
slide
directional control
system pressure
control 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.)
Withdrawn
Application number
EP82110000A
Other languages
German (de)
English (en)
Inventor
Norbert Dipl.-Ing. Ocvirk
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.)
Feinmechanische Werke Mainz GmbH
Original Assignee
Feinmechanische Werke Mainz GmbH
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 Feinmechanische Werke Mainz GmbH filed Critical Feinmechanische Werke Mainz GmbH
Priority to EP82110000A priority Critical patent/EP0107740A1/fr
Publication of EP0107740A1 publication Critical patent/EP0107740A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/004—Fluid pressure supply failure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor

Definitions

  • the invention relates to a directional control valve with the features of the preamble of claim 1.
  • a system pressure is usually maintained which is required to actuate the various organs of the switching system. If this system pressure is not reached, these organs cannot be operated, which is harmless in many cases.
  • the directional control valve is to assume a certain switching position if there is a pressure deviation from the system pressure, e.g. a loss of pressure has occurred.
  • the invention is therefore based on the object of creating a directional valve which, regardless of the actuated switching position (for example by hand or magnetically) in the event of a pressure deviation from the system pressure, e.g. in the event of pressure loss, assumes a defined switching position.
  • the push-open outlet valve When the push-open outlet valve is acted upon by the system pressure, it behaves like a quasi-rigid column and the tappet provided for actuating the valve acts on the valve slide via this quasi-rigid column and can thus determine its position. However, if the column has become "soft" due to a loss of pressure, actuation of the tappet leads to the opening of the outlet valve without the force being sufficient to actuate the valve slide. This therefore assumes the position prescribed by the valve springs.
  • the push-open outlet valve can be loaded in the closing direction by a spring, the force of which is the amount of Pressure drop determined at which the directional valve should assume a certain switching position.
  • the push-open outlet valve is expediently arranged in the valve slide. In this way, freedom of action on the tappet is achieved, since the outlet valve is supported on parts of the valve slide as a housing.
  • the arrangement can be double-sided, for example the valve slide can have a central position defined by at least two slide valve springs. For example, it can be the closed middle position of a three / four-way valve.
  • two exhaust valves - one on each valve spool side - and two plungers are provided, with which the slide valve can be brought into one or the other switching position.
  • a housing 1 has a slide bore 2, in which a valve slide 3 is guided.
  • a channel 4 which usually carries system pressure, and a channel 5, which is usually depressurized, and channels 6 and-7, which are connected to the channel 4 or 5 depending on the switching position of the valve slide 3, lead into the slide bore -2.
  • the slide and / or the slide bore 2 has ring recesses, the edges of which represent switching edges, as is known and therefore need not be described in more detail.
  • the slide 3 also has an axial bore 8 which is connected to the channel 4 via a transverse bore 9 and at the end merges into a recess 11, 12 which is closed by a ring 13, 14 each.
  • An outlet valve 21, 22 is provided in each of the recesses 11, 12, each of which has a piston 21a, 22a and a closing element 21b or 22b guided in the recesses 11 and 12, respectively.
  • the closing element 21b or 22b can, as shown,. be a cone, but it is also possible to use a ball or a flat sealing element.
  • a valve spring 23 or 24, which generates an additional closing force, is accommodated in each of the hollow drilled pistons 21a and 22a.
  • the exhaust valves 21 and 22 are designed to be push open, i.e.
  • a tappet 25 and 26 extend with their ends through the central bore of the rings 13, 14 and are supported on the foremost end 21b and 22b of the respective exhaust valve 21 and 22, respectively.
  • the operation of the valve is as follows. It is assumed that the system pressure should be switched from channel 4 to channel 7.
  • the plunger 25 is then moved to the right in the drawing and thereby hits the outlet valve 21, which can only be opened against the hydraulic force on the piston 21a and the force of the spring 23.
  • the force exerted by the plunger 25, on the other hand is transmitted to the slide valve 3 and thus to the slide valve springs 15 and 16, the displacement to the right leading to relaxation of the spring 15 and increasing tension of the spring 16.
  • the difference in the spring forces is less than the force required to open the valve 21.
  • the slide valve 23 is thus shifted to the right, as if the outlet valve 21 were not present.
  • the force of the spring 23 is not sufficient to keep the valve 21 closed when the tappet 25 is moved against the differential force of the springs 16-15.
  • the slide valve 3 therefore remains in the centered position shown. Via the opened outlet valve 21, liquid flows past the tip of the tappet 25 and past the valve spring 15 into the unpressurized discharge channel 5.
  • the amount of pressure drop at which the valve is to assume a defined switching position depends on the spring force of the springs 23 and 24 from. By choosing these springs, the amount of pressure drop can thus be adjusted.
  • the plungers 25 and 26 can be moved by hand or using magnets.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Multiple-Way Valves (AREA)
EP82110000A 1982-10-29 1982-10-29 Soupape à plusieurs voies Withdrawn EP0107740A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP82110000A EP0107740A1 (fr) 1982-10-29 1982-10-29 Soupape à plusieurs voies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82110000A EP0107740A1 (fr) 1982-10-29 1982-10-29 Soupape à plusieurs voies

Publications (1)

Publication Number Publication Date
EP0107740A1 true EP0107740A1 (fr) 1984-05-09

Family

ID=8189313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82110000A Withdrawn EP0107740A1 (fr) 1982-10-29 1982-10-29 Soupape à plusieurs voies

Country Status (1)

Country Link
EP (1) EP0107740A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1006284A3 (fr) * 1998-12-02 2003-01-22 Teijin Seiki Company Limited Système de soupape de commande

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR85943E (fr) * 1963-10-24 1965-11-05 Sigma Perfectionnements apportés aux distributeurs hydrauliques

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR85943E (fr) * 1963-10-24 1965-11-05 Sigma Perfectionnements apportés aux distributeurs hydrauliques

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1006284A3 (fr) * 1998-12-02 2003-01-22 Teijin Seiki Company Limited Système de soupape de commande

Similar Documents

Publication Publication Date Title
DE2737675A1 (de) Umschaltventil mit magnetventilsteuerung
DE2140467A1 (fr)
DE3340001A1 (de) Vierwegeventil mit innerem pilotventil
EP0242604A2 (fr) Clapet 5/3
DE3842633A1 (de) Vorgesteuertes mehrwegeventil
DE1750092A1 (de) Mehrwegeventil
DE2923467C2 (de) Überwachungseinrichtung
EP0463394B1 (fr) Distributeur à commande électromagnétique
DE69011442T2 (de) Gehäuse für reversierbares Spindelventil.
EP0107740A1 (fr) Soupape à plusieurs voies
DE4421357A1 (de) Pneumatisches Wegeventil
DE19509578B4 (de) Pneumatisches Wegeventil
DE8533506U1 (de) Tellerventil
DE1600735B1 (de) Mehrweg-Steuerventil
DE4231598C1 (de) Druckmittelbetätigbares Ventil
EP0779197A1 (fr) Dispositif de sécurité de positions de fin de course de commandes de positionnement pour aiguillages et croisements
DE1775798C3 (de) Mehrwege- oder Steuerventil mit Druckmittelantrieb und Hilfskolben
DE2539985B2 (de) Bistabile Schnappeinrichtung
DE19633074B4 (de) Automatisch verschließbares Leitungsventil
DE1600735C (de) Mehrweg Steuerventil
DE3234705A1 (de) Magnetbetaetigtes mehrwegesteuerventil
DE19749640A1 (de) Schieberventil
DE1298418B (de) Ventileinrichtung zur Darstellung einer logischen Funktion
DE1138990B (de) Mehrwegeventil
WO2001006131A1 (fr) Tiroir de distribution a commande assistee

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB IT

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19850110

RIN1 Information on inventor provided before grant (corrected)

Inventor name: OCVIRK, NORBERT, DIPL.-ING.