EP3234426A1 - Pressure-limiting valve - Google Patents

Pressure-limiting valve

Info

Publication number
EP3234426A1
EP3234426A1 EP15816434.3A EP15816434A EP3234426A1 EP 3234426 A1 EP3234426 A1 EP 3234426A1 EP 15816434 A EP15816434 A EP 15816434A EP 3234426 A1 EP3234426 A1 EP 3234426A1
Authority
EP
European Patent Office
Prior art keywords
pressure relief
relief valve
pressure
housing
valve seat
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.)
Granted
Application number
EP15816434.3A
Other languages
German (de)
French (fr)
Other versions
EP3234426B1 (en
Inventor
Holger Muehlhoff
Robert Schloeder
Dieter Born
Wasilij Schieder
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to PL15816434T priority Critical patent/PL3234426T3/en
Publication of EP3234426A1 publication Critical patent/EP3234426A1/en
Application granted granted Critical
Publication of EP3234426B1 publication Critical patent/EP3234426B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D5/00—Heat treatments of cast-iron
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/06—Surface hardening
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0466—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with a special seating surface
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7738—Pop valves
    • Y10T137/774—Pop pressure reactor in inflow to valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7758—Pilot or servo controlled
    • Y10T137/7762—Fluid pressure type

Definitions

  • the invention relates to a pressure relief valve according to the preamble of patent claim 1.
  • the housing is usually made of steel, in particular a solid steel block, with recordings for pressure adjustment and pressure medium channels must be drilled in the housing.
  • bores introduced for manufacturing reasons must also be closed again, since they were only necessary for the production of the boreholes required for operation and would be a hindrance to operation. This usual procedure is
  • Valve seat is but at the disclosed there for a hardening of the valve seat method, the work hardening, required on the one hand, the work hardening by means of suitable
  • the invention is based on the object, a
  • a pressure relief valve according to the present invention includes a housing and a valve seat formed in the housing which is spring loaded
  • the housing is made of cast iron with nodular graphite, in particular GGG or GJS - called “ductile iron", wherein the housing at least in a region of the valve seat
  • Surface hardening includes hardening processes such as induction hardening,
  • An advantage of the pressure relief valve according to the invention is that
  • the surface hardening is a cost-hardening method, because because of the good dimensional accuracy machining is usually not necessary or keeps at least within narrow limits and thus reducing a tool insert.
  • the housing is advantageously produced by means of a precision or investment casting process, such as, for example, a lost wax process, in particular with a wax model enveloped in refractory molding material.
  • a precision or investment casting process such as, for example, a lost wax process
  • a wax model enveloped in refractory molding material such as, for example, a wax model enveloped in refractory molding material.
  • sand cores made of sand and phenolic resin, as well as so-called print cores, made of plastic after the rapid prototyping and / or rapid manufacturing process
  • At least one, in particular blind-hole-shaped, receptacle is advantageously provided in the housing, in which at least partially the pressure adjustment device is arranged, wherein the receptacle contains the valve seat.
  • the receptacle is approximately rotationally symmetrical.
  • rotating tools can be introduced into the receptacle, for example, for an optionally required post-processing of the valve seat before or after the surface hardening.
  • thus can be a thread in the recording
  • the receptacle is formed as a recess in the housing.
  • the valve seat of the pressure adjustment of approximately in one
  • Closing direction of the closing element arranged. This further achieves a compact and space-saving design of the pressure relief valve.
  • the above-mentioned surface hardening has the further advantage that because of the resulting reduced use of tools for the
  • valve seat can be arranged in such a way that it can be used exclusively from a single side, in particular via the receptacle, for surface hardening
  • the closing element has a closing cone, from which, starting in the closing direction, a guide piston is arranged on the closing element.
  • the closing cone in particular a contact surface of the closing cone, is in the closed state of the closing element in contact with the valve seat.
  • the closing element and the guide piston are integrally formed.
  • a spring plate of the pressure adjustment device starting from the closing cone, against the closing direction, a spring plate of the pressure adjustment device, in particular adjacent to, the
  • Closing element arranged.
  • the closing element and the spring plate can be formed in one piece or in several pieces.
  • a transition of the receptacle between the spring plate and the valve seat is at least partially conical.
  • the transition from a region of the spring plate in a closed position of the closing element to the valve seat is formed at least partially conically tapering. Due to the inventive design of the transition, the housing is weakened less.
  • more housing material remains between the receptacle and a fastening recess provided adjacent to the receptacle in the housing, with which the pressure limiting valve can be fastened to one or between two plates.
  • a plurality of mounting recesses are provided in the housing, which are preferably formed as through holes to attach the pressure relief valve in a simple manner, for example with through bolts. More preferably, the spring plate is at a portion of the spring
  • Pressure adjustment protrudes designed to taper in the closing direction.
  • the diameter of the receptacle may decrease in the closing direction, in particular gradually and / or continuously.
  • the pressure relief valve is formed in an intermediate plate construction, wherein the housing advantageously two plane-parallel to each other Has contact surfaces.
  • the housing advantageously two plane-parallel to each other Has contact surfaces.
  • the pressure relief valve is directly controlled, which further favors a compact and space-saving design of the pressure relief valve according to the invention.
  • Pressure limiting valve 1 includes a housing 2 in which a receptacle 4 is provided for a provided in the housing 2 pressure adjustment device 6.
  • the pressure adjustment device 6 includes a reducer 8, a spring 10 which can be preloaded therein, and a spring plate 12.
  • the spring plate 12 is formed integrally with a spring-loaded closing element 14 which, starting from the spring plate 12 in the closing direction 24, has a closing cone 16 and a guide piston 18.
  • the reducer 8 is screwed into the receptacle 4, wherein in the receptacle 4, an internal thread is provided and a corresponding external thread on the
  • the receptacle 4 contains a valve seat 20 and a transition 22 from a region of the spring plate 12 in a closed position of the closing element 14 to the valve seat 20.
  • the housing 2 is whether surface-hardened to a sealing function between the valve seat 20 and closing cone 16 permanently to ensure and thus increase the life of the pressure relief valve.
  • the closure member 14 is biased in its closing direction 24 against the valve seat 20.
  • the transition 22 is formed in the closing direction 24 tapered.
  • Spring plate 12 is at its over the spring 10 projecting portion in
  • Recording 4 for the pressure adjusting device 6 is in the closing direction 24 of the
  • Closing element 14 of the transition 22 is arranged to the valve seat and further in
  • Closing direction 24 of the guide piston 18 is arranged in the receptacle 4.
  • the closing cone 16 In its closed position, the closing cone 16 is in contact with a contact surface with the valve seat 20 and seals a high-pressure side against a low-pressure side.
  • Between the guide piston 18 and the closing cone 16 is a rod portion of the
  • Closing element 14 arranged with a reduced compared to the guide piston 18 and / or the contact surface of the closing cone 16 diameter.
  • the annular gap serves to equalize the pressure medium between the annular space 26 and the piston chamber 28 as soon as the closing element moves in the receptacle.
  • the size of the annular gap determines a degree of damping, with which the movement of the closing element 14 is damped in the receptacle 4, as it is in the interaction of spring 10 and closing element 14, in particular with the spring plate 12, physically considered a spring / mass system that could otherwise swing undamped.
  • Pressure medium space 30 there is a low pressure. Exceeds the high pressure in
  • the closing element 14 is opposite to the closing direction 24 with his
  • Closing cone 16 lifted from the valve seat 20 and pressure medium can on the
  • Pressure medium chamber 30 in a pressure medium sink (not shown) drain is thus limited to the value corresponding to the equivalent of the spring 10, wherein the value is adjustable or adjustable.
  • Pressure relief valve 1 are arranged in the housing 2, two pressure adjustment devices 6, each with an associated receptacle 4 is substantially mirror-inverted.
  • the receptacles 4 shown in the second embodiment correspond to the receptacle 4 of the first embodiment shown in FIG. 1 and described above.
  • the pressure adjusting devices 6 used in the second exemplary embodiment largely correspond to those shown in FIG. 1 and described above
  • Pressure adjustment device 6 of the first embodiment wherein two different variants of multi-piece closing elements 14 and spring plates 12 are shown. Below, these different variants will be described.
  • Spring plate 12 and the closing element 14 so formed in several pieces that a spherical end portion of the closing element 14 comes with a correspondingly shaped mating surface of the spring plate 12 in abutment. This can advantageously misalignment between the spring 10 and the
  • Spring plate 12 and the closing element 14 so formed in several pieces, that a cylindrical end portion of the closing element 14 comes with a correspondingly shaped counter surface of the spring plate 12 in abutment.
  • the spring plate 12 is formed here approximately hat-shaped. This allows the closing element 14 with his
  • a pressure relief valve with a cast housing the valve seat is surface hardened.
  • a valve seat can be arranged such that it is accessible exclusively from a single side for surface hardening and / or for post-processing by means of a tool, in particular essentially in the closing direction of the closing element.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Safety Valves (AREA)

Abstract

The invention relates to a pressure-limiting valve, comprising a housing (2) and a pressure adjustment device (6) provided therein. Furthermore, the pressure-limiting valve contains a valve seat (20), which is arranged in the housing and which can be closed by means of a spring-loaded closing element (14) of the pressure adjustment device. The housing is composed of cast iron having spherical graphite, wherein the housing is surface-hardened at least in a region of the valve seat.

Description

Druckbegrenzungsventil  Pressure relief valve
Beschreibung description
Die Erfindung betrifft ein Druckbegrenzungsventil gemäß dem Oberbegriff des Patentanspruchs 1 . The invention relates to a pressure relief valve according to the preamble of patent claim 1.
Bei bekannten Druckbegrenzungsventilen ist das Gehäuse üblicherweise aus Stahl, insbesondere einem massiven Stahlblock, wobei Aufnahmen für Druckverstelleinrichtungen und Druckmittelkanäle in dem Gehäuse gebohrt werden müssen. Teilweise müssen aus fertigungstechnischen Gründen eingebrachte Bohrungen auch wieder verschlossen werden, da sie lediglich für die Herstellung der für den Betrieb benötigten Bohrungen erforderlich waren und für den Betrieb aber hinderlich wären. Dieses übliche Vorgehen ist In known pressure relief valves, the housing is usually made of steel, in particular a solid steel block, with recordings for pressure adjustment and pressure medium channels must be drilled in the housing. In some cases, bores introduced for manufacturing reasons must also be closed again, since they were only necessary for the production of the boreholes required for operation and would be a hindrance to operation. This usual procedure is
fertigungstechnisch aufwändig und damit kostenintensiv. production-consuming and thus cost-intensive.
Aus der DE 10 2004 040 359 B4 ist eine allgemeine Druckregelarmatur bekannt, deren Gehäuse mittels eines Gussverfahrens hergestellt ist. Bei der Herstellung des Gehäuses sind benötigte Druckmittelkanäle und Aufnahmen auf kostengünstige Weise zwar mit herstellbar, aber die dort offenbarte Armatur hat nicht zuletzt wegen eines von beiden Seiten zugänglichen Ventilsitzes einen sehr großen Platzbedarf. Diese Zugänglichkeit des From DE 10 2004 040 359 B4 a general pressure control valve is known, the housing is made by a casting process. In the production of the housing are required pressure fluid channels and recordings in a cost effective manner with produced, but the valve disclosed there has a very large footprint, not least because of a valve seat accessible from both sides. This accessibility of the
Ventilsitzes ist aber bei der dort für ein Härten des Ventilsitzes offenbarten Methode, der Kaltverfestigung, erforderlich, um einerseits die Kaltverfestigung mittels geeigneten Valve seat is but at the disclosed there for a hardening of the valve seat method, the work hardening, required on the one hand, the work hardening by means of suitable
Werkzeugen durchzuführen, aber auch, um eine nach der Kaltverfestigung erforderliche spanende Nachbearbeitung mittels dazu geeigneten Werkzeugen wie beispielsweise Fräsern zu ermöglichen, um die Maßhaltigkeit des Ventilsitzes zu gewährleisten. Dem gegenüber liegt der Erfindung die Aufgabe zu Grunde, ein Perform tools, but also to allow a required post-work hardening machining by means of suitable tools such as milling cutters to ensure the dimensional accuracy of the valve seat. In contrast, the invention is based on the object, a
Druckbegrenzungsventil zu schaffen, das auf eine kostengünstige Weise herstellbar ist. To provide pressure relief valve that can be produced in a cost effective manner.
Diese Aufgabe wird gelöst durch ein Druckbegrenzungsventil mit den Merkmalen des Patentanspruchs 1 . This object is achieved by a pressure relief valve having the features of patent claim 1.
Vorteilhafte Weiterbildungen des erfindungsgemäßen Druckbegrenzungsventils sind in den weiteren Unteransprüchen beschrieben. Ein Druckbegrenzungsventil gemäß der vorliegenden Erfindung enthält ein Gehäuse und einen in dem Gehäuse ausgebildeten Ventilsitz, der über ein federbelastetes Advantageous developments of the pressure relief valve according to the invention are described in the further subclaims. A pressure relief valve according to the present invention includes a housing and a valve seat formed in the housing which is spring loaded
Schließelement des Druckbegrenzungsventils verschließbar ist. Erfindungsgemäß besteht das Gehäuse aus Gusseisen mit Kugelgraphit, insbesondere GGG oder GJS - genannt "Sphäroguss", wobei das Gehäuse mindestens in einem Bereich des Ventilsitzes Closing element of the pressure relief valve is closed. According to the invention, the housing is made of cast iron with nodular graphite, in particular GGG or GJS - called "ductile iron", wherein the housing at least in a region of the valve seat
oberflächengehärtet ist. surface hardened.
Oberflächenhärten enthält Härteverfahren wie beispielsweise Induktionshärten, Surface hardening includes hardening processes such as induction hardening,
Laserstrahlhärten oder Flammhärten. Ein Vorteil des erfindungsgemäßen Druckbegrenzungsventil ist, dass Laser hardening or flame hardening. An advantage of the pressure relief valve according to the invention is that
Druckmittelkanäle und andere Aufnahmen beim Gießen des Gehäuses entstehen und nicht nach Fertigstellung des Gehäuses durch spanende Bearbeitung hergestellt werden müssen, wobei das Oberflächenhärten eine kostengünstige Härtemethode ist, weil wegen der guten Maßhaltigkeit eine spanende Nachbearbeitung meist nicht nötig ist oder sich zumindest in engen Grenzen hält und somit einen Werkzeugeinsatz reduziert.  Pressure fluid channels and other recordings when casting the case arise and not after completion of the housing must be made by machining, the surface hardening is a cost-hardening method, because because of the good dimensional accuracy machining is usually not necessary or keeps at least within narrow limits and thus reducing a tool insert.
Vorteilhafterweise ist das Gehäuse über ein Präzisions- oder Feingussverfahren, wie beispielsweise ein Wachsausschmelzverfahren, insbesondere mit aus feuerfestem Formstoff umhülltem Wachsmodell, hergestellt. Dadurch ist eine erhöhte Maßhaltigkeit erzielbar, die einen Werkzeugeinsatz für eine spanende Nachbearbeitung reduziert. The housing is advantageously produced by means of a precision or investment casting process, such as, for example, a lost wax process, in particular with a wax model enveloped in refractory molding material. As a result, an increased dimensional stability can be achieved, which reduces a tool insert for a subsequent machining.
Weiter beispielsweise können auch Sandkerne, hergestellt aus Sand und Phenolharz, sowie sogenannte Printkerne, hergestellt aus Kunststoff nach dem Rapid Prototyping und/oder Rapid Manufacturing Verfahren, verwendet werden. Vorteilhaft ist in dem Gehäuse mindestens eine, insbesondere sacklochförmige, Aufnahme vorgesehen, in der zumindest teilweise die Druckverstelleinrichtung angeordnet ist, wobei die Aufnahme den Ventilsitz enthält. Dadurch ist eine kompakte und platzsparende Ausbildung des Druckbegrenzungsventils realisierbar. Weiter ist so eine vereinfachte Further, for example, sand cores, made of sand and phenolic resin, as well as so-called print cores, made of plastic after the rapid prototyping and / or rapid manufacturing process can be used. At least one, in particular blind-hole-shaped, receptacle is advantageously provided in the housing, in which at least partially the pressure adjustment device is arranged, wherein the receptacle contains the valve seat. As a result, a compact and space-saving design of the pressure relief valve can be realized. Next is such a simplified one
Herstellung des Gehäuses und somit des Druckbegrenzungsventils erreichbar. Production of the housing and thus the pressure relief valve achievable.
Bevorzugt ist die Aufnahme etwa rotationssymmetrisch ausgebildet. Dadurch können insbesondere rotierende Werkzeuge in die Aufnahme eingebracht werden, beispielsweise für eine gegebenenfalls erforderliche Nachbearbeitung des Ventilsitzes vor oder nach dem Oberflächenhärten. Darüber hinaus lässt sich somit ein Gewinde in die Aufnahme Preferably, the receptacle is approximately rotationally symmetrical. As a result, in particular rotating tools can be introduced into the receptacle, for example, for an optionally required post-processing of the valve seat before or after the surface hardening. In addition, thus can be a thread in the recording
einbringen, über das die Druckverstelleinrichtung in der Aufnahme befestigt werden kann. Weiter bevorzugt ist die Aufnahme als eine Ausnehmung in dem Gehäuse ausgebildet. Vorteilhafterweise ist der Ventilsitz von der Druckverstelleinrichtung aus etwa in einerintroduce, over which the pressure adjustment can be mounted in the receptacle. More preferably, the receptacle is formed as a recess in the housing. Advantageously, the valve seat of the pressure adjustment of approximately in one
Schließrichtung des Schließelements angeordnet. Dadurch ist weiter eine kompakte und platzsparende Ausbildung des Druckbegrenzungsventils erreichbar. Closing direction of the closing element arranged. This further achieves a compact and space-saving design of the pressure relief valve.
Das oben genannte Oberflächenhärten hat neben den oben genannten Vorteilen weiter den Vorteil, dass wegen des dadurch reduzierten Werkzeugeinsatzes für die In addition to the above-mentioned advantages, the above-mentioned surface hardening has the further advantage that because of the resulting reduced use of tools for the
Nachbearbeitung eine deutlich kompaktere und platzsparendere Anordnung insbesondere der Druckverstelleinrichtung und der Aufnahme in dem Gehäuse gewählt werden kann. Insbesondere dadurch ist der Ventilsitz derart anordenbar, dass er ausschließlich von einer einzigen Seite aus, insbesondere über die Aufnahme, für das Oberflächenhärten,  Post-processing a much more compact and space-saving arrangement, in particular the pressure adjustment and recording in the housing can be selected. In particular, the valve seat can be arranged in such a way that it can be used exclusively from a single side, in particular via the receptacle, for surface hardening,
insbesondere mittels eines Werkzeugs, und/oder für eine Nachbearbeitung mittels eines Werkzeugs zugänglich ist, insbesondere im Wesentlichen in Schließrichtung des in particular by means of a tool, and / or is accessible for a post-processing by means of a tool, in particular substantially in the closing direction of the
Schließelements. Closing element.
Vorteilhafterweise weist das Schließelement einen Schließkegel auf, von dem ausgehend in Schließrichtung ein Führungskolben an dem Schließelement angeordnet ist. Der Schließkegel, insbesondere eine Kontaktfläche des Schließkegels, ist in geschlossenem Zustand des Schließelements in Kontakt mit dem Ventilsitz. Vorteilhafterweise sind das Schließelement und der Führungskolben einstückig ausgebildet. Vorteilhafterweise ist von dem Schließkegel ausgehend entgegen der Schließrichtung ein Federteller der Druckverstelleinrichtung an, insbesondere benachbart zu, dem Advantageously, the closing element has a closing cone, from which, starting in the closing direction, a guide piston is arranged on the closing element. The closing cone, in particular a contact surface of the closing cone, is in the closed state of the closing element in contact with the valve seat. Advantageously, the closing element and the guide piston are integrally formed. Advantageously, starting from the closing cone, against the closing direction, a spring plate of the pressure adjustment device, in particular adjacent to, the
Schließelement angeordnet. Closing element arranged.
Das Schließelement und der Federteller können einstückig oder mehrstückig ausgebildet sein. The closing element and the spring plate can be formed in one piece or in several pieces.
Vorteilhafterweise ist ein Übergang der Aufnahme zwischen dem Federteller und dem Ventilsitz zumindest teilweise konisch ausgebildet. Insbesondere ist der Übergang von einem Bereich des Federtellers in einer Schließstellung des Schließelements zu dem Ventilsitz zumindest teilweise konisch zulaufend ausgebildet. Durch die erfindungsgemäße Gestaltung des Übergangs wird das Gehäuse weniger geschwächt. Insbesondere bleibt im Vergleich zu einem Übergang mit konstantem Durchmesser bei der erfindungsgemäßen Gestaltung des Übergangs mehr Gehäusematerial bestehen zwischen der Aufnahme und einer benachbart zu der Aufnahme in dem Gehäuse vorgesehenen Befestigungsausnehmung, mit der das Druckbegrenzungsventil an einer oder zwischen zwei Platten befestigbar ist. Advantageously, a transition of the receptacle between the spring plate and the valve seat is at least partially conical. In particular, the transition from a region of the spring plate in a closed position of the closing element to the valve seat is formed at least partially conically tapering. Due to the inventive design of the transition, the housing is weakened less. In particular, compared to a transition with a constant diameter in the design of the transition according to the invention, more housing material remains between the receptacle and a fastening recess provided adjacent to the receptacle in the housing, with which the pressure limiting valve can be fastened to one or between two plates.
Vorteilhafterweise sind mehrere Befestigungsausnehmungen in dem Gehäuse vorgesehen, die bevorzugt als Durchgangslöcher ausgebildet sind, um das Druckbegrenzungsventil auf einfache Art und Weise zu befestigen, beispielsweise mit Durchgangsschrauben. Weiter bevorzugt ist der Federteller an einem Abschnitt, der über eine Feder der Advantageously, a plurality of mounting recesses are provided in the housing, which are preferably formed as through holes to attach the pressure relief valve in a simple manner, for example with through bolts. More preferably, the spring plate is at a portion of the spring
Druckverstelleinrichtung hinausragt, in Schließrichtung konisch zulaufend ausgebildet. Pressure adjustment protrudes, designed to taper in the closing direction.
Der Durchmesser der Aufnahme kann in Schließrichtung abnehmen, insbesondere stufenweise und/oder kontinuierlich. The diameter of the receptacle may decrease in the closing direction, in particular gradually and / or continuously.
Hiermit wird darauf hingewiesen, dass die erfindungsgemäße Gestaltung der It should be noted that the inventive design of
Aufnahme, insbesondere des Übergangs, als eine eigenständige Erfindung angesehen wird; die Anmelderin behält sich das Recht vor, gegebenenfalls darauf zu einem späteren Inclusion, in particular of the transition, is regarded as an independent invention; the applicant reserves the right to do so at a later date if necessary
Zeitpunkt eine eigene Patentanmeldung zu richten. Time to file a separate patent application.
Bevorzugt ist das Druckbegrenzungsventil in einer Zwischenplattenbauweise ausgebildet, wobei das Gehäuse vorteilhafterweise zwei zueinander planparallele Anlageflächen aufweist. Durch das erfindungsgemäße Oberflächenhärten ist, wie oben beschrieben, die kompakte Anordnung der einzelnen Bereiche in dem Preferably, the pressure relief valve is formed in an intermediate plate construction, wherein the housing advantageously two plane-parallel to each other Has contact surfaces. The surface hardening according to the invention, as described above, the compact arrangement of the individual areas in the
Druckbegrenzungsventil gemäß der vorliegenden Erfindung erreichbar und die somit die platzsparende Ausführung desselben realisierbar, was für eine Ausführung in Pressure relief valve according to the present invention achievable and thus the space-saving execution of the same feasible, which is an embodiment in
Zwischenplattenbauweise günstige Voraussetzungen sind. Zwischenplattenbauweise favorable conditions.
Bevorzugt ist das Druckbegrenzungsventil direktgesteuert, was weiter eine kompakte und platzsparende Ausführung des erfindungsgemäßen Druckbegrenzungsventils begünstigt. Preferably, the pressure relief valve is directly controlled, which further favors a compact and space-saving design of the pressure relief valve according to the invention.
Vorteilhafterweise sind in dem Gehäuse zwei im Wesentlichen spiegelbildlich zueinander angeordnete Aufnahmen vorgesehen. Dabei ist in jeder der Aufnahmen - wie oben beschrieben - zumindest teilweise eine Druckverstelleinrichtungen angeordnet. Weiter ist der Ventilsitz - wie oben beschrieben - in jeder der Aufnahmen enthalten. Mit dieser Anordnung lässt sich auf platzsparende Weise ein jeweiliger Druck in zwei voneinander unabhängigen Druckmittelkreisen auf den an der jeweiligen Druckverstelleinrichtung eingestellten Wert begrenzen. Alternativ dazu können die beiden Druckbegrenzungsventile fluidisch hintereinander geschaltetsein. Mehrere Ausführungsbeispiele eines erfindungsgemäßen Druckbegrenzungsventils sind in den Zeichnungen dargestellt. Anhand der Figuren dieser Zeichnungen wird die Erfindung nun näher erläutert. Advantageously, in the housing two substantially mirror images of each other arranged receptacles are provided. In this case, in each of the receptacles - as described above - at least partially arranged a Druckverstelleinrichtungen. Next, the valve seat - as described above - included in each of the shots. With this arrangement, in a space-saving manner, a respective pressure in two independent pressure medium circuits can be limited to the value set at the respective pressure adjustment device. Alternatively, the two pressure relief valves may be fluidly connected in series. Several embodiments of a pressure relief valve according to the invention are shown in the drawings. With reference to the figures of these drawings, the invention will now be explained in more detail.
Es zeigen: Show it:
Figur 1 in einem Längsschnitt eine Vorderansicht eines erfindungsgemäßen  Figure 1 in a longitudinal section a front view of an inventive
Druckbegrenzungsventils gemäß einem ersten Ausführungsbeispiel, und  Pressure relief valve according to a first embodiment, and
Figur 2 in einem Längsschnitt eine Vorderansicht eines erfindungsgemäßen  Figure 2 in a longitudinal section a front view of an inventive
Druckbegrenzungsventils gemäß einem zweiten Ausführungsbeispiel. Das in Figur 1 dargestellte erste Ausführungsbeispiel eines erfindungsgemäßenPressure limiting valve according to a second embodiment. The illustrated in Figure 1 first embodiment of an inventive
Druckbegrenzungsventils 1 enthält ein Gehäuse 2, in dem eine Aufnahme 4 für eine in dem Gehäuse 2 vorgesehene Druckverstelleinrichtung 6 vorgesehen ist. Die Druckverstelleinrichtung 6 enthält ein Reduzierstück 8, eine darin vorspannbare Feder 10, und einen Federteller 12. Hier ist der Federteller 12 einstückig mit einem federbelasteten Schließelement 14 ausgebildet, das ausgehend von dem Federteller 12 in Schließrichtung 24 einen Schließkegel 16 und einen Führungskolben 18 aufweist. Pressure limiting valve 1 includes a housing 2 in which a receptacle 4 is provided for a provided in the housing 2 pressure adjustment device 6. The pressure adjustment device 6 includes a reducer 8, a spring 10 which can be preloaded therein, and a spring plate 12. Here, the spring plate 12 is formed integrally with a spring-loaded closing element 14 which, starting from the spring plate 12 in the closing direction 24, has a closing cone 16 and a guide piston 18.
Das Reduzierstück 8 ist in die Aufnahme 4 eingeschraubt, wobei in der Aufnahme 4 ein Innengewinde vorgesehen ist und ein entsprechendes Außengewinde an dem The reducer 8 is screwed into the receptacle 4, wherein in the receptacle 4, an internal thread is provided and a corresponding external thread on the
Reduzierstück 8 vorgesehen ist. Die Aufnahme 4 enthält einen Ventilsitz 20 und einen Übergang 22 von einem Bereich des Federtellers 12 in einer Schließstellung des Schließelements 14 zu dem Ventilsitz 20. Im Bereich des Ventilsitzes 20 ist das Gehäuse 2 ob erflächengehärtet, um eine Abdichtfunktion zwischen Ventilsitz 20 und Schließkegel 16 dauerhaft zu gewährleisten und somit eine Lebensdauer des Druckbegrenzungsventils zu erhöhen. Reduction 8 is provided. The receptacle 4 contains a valve seat 20 and a transition 22 from a region of the spring plate 12 in a closed position of the closing element 14 to the valve seat 20. In the region of the valve seat 20, the housing 2 is whether surface-hardened to a sealing function between the valve seat 20 and closing cone 16 permanently to ensure and thus increase the life of the pressure relief valve.
Über die Feder 10 ist das Schließelement 14 in seiner Schließrichtung 24 gegen den Ventilsitz 20 vorgespannt. About the spring 10, the closure member 14 is biased in its closing direction 24 against the valve seat 20.
Der Übergang 22 ist in Schließrichtung 24 konisch zulaufend ausgebildet. Der The transition 22 is formed in the closing direction 24 tapered. Of the
Federteller 12 ist an seinem über die Feder 10 hinausragenden Abschnitt in Spring plate 12 is at its over the spring 10 projecting portion in
Schließrichtung 24 konisch zulaufend ausgebildet. Closing direction 24 tapered formed.
Ausgehend von der Lage des Federtellers 12 in seiner Schließstellung in der Based on the position of the spring plate 12 in its closed position in the
Aufnahme 4 für die Druckverstelleinrichtung 6 ist in der Schließrichtung 24 des Recording 4 for the pressure adjusting device 6 is in the closing direction 24 of the
Schließelements 14 der Übergang 22 zu dem Ventilsitz angeordnet und weiter in Closing element 14 of the transition 22 is arranged to the valve seat and further in
Schließrichtung 24 ist der Führungskolben 18 in der Aufnahme 4 angeordnet. In seiner Schließstellung steht der Schließkegel 16 mit einer Kontaktfläche mit dem Ventilsitz 20 in Kontakt und dichtet eine Hochdruckseite gegen eine Niederdruckseite ab. Zwischen dem Führungskolben 18 und dem Schließkegel 16 ist ein Stababschnitt des Closing direction 24 of the guide piston 18 is arranged in the receptacle 4. In its closed position, the closing cone 16 is in contact with a contact surface with the valve seat 20 and seals a high-pressure side against a low-pressure side. Between the guide piston 18 and the closing cone 16 is a rod portion of the
Schließelements 14 mit einem im Vergleich zu dem Führungskolben 18 und/oder der Kontaktfläche des Schließkegels 16 reduzierten Durchmesser angeordnet. Mit der Closing element 14 arranged with a reduced compared to the guide piston 18 and / or the contact surface of the closing cone 16 diameter. With the
Aufnahme 4 begrenzt der Stababschnitt einen Ringraum 26 und der Führungskolben 18 einen Kolbenraum 28, wobei zwischen Führungskolben 18 und Aufnahme 4 ein Ringspalt vorgesehen ist. Der Ringspalt dient dem Druckmittelausgleich zwischen dem Ringraum 26 und dem Kolbenraum 28, sobald sich das Schließelement in der Aufnahme bewegt. Die Größe des Ringspaltes bestimmt einen Dämpfungsgrad, mit dem die Bewegung des Schließelements 14 in der Aufnahme 4 gedämpft wird, da es sich bei dem Zusammenspiel aus Feder 10 und Schließelement 14, insbesondere mit dem Federteller 12, physikalisch betrachtet um ein Feder-/Massesystem handelt, das ansonsten ungedämpft schwingen könnte. In dem Ringraum 26 und in dem Kolbenraum 28 herrscht ein Hochdruck und in einem entgegen der Schließrichtung 24 benachbart zu dem Ventilsitz 22 angeordneten 4 recording the rod section defines an annular space 26 and the guide piston 18th a piston chamber 28, wherein between the guide piston 18 and receptacle 4, an annular gap is provided. The annular gap serves to equalize the pressure medium between the annular space 26 and the piston chamber 28 as soon as the closing element moves in the receptacle. The size of the annular gap determines a degree of damping, with which the movement of the closing element 14 is damped in the receptacle 4, as it is in the interaction of spring 10 and closing element 14, in particular with the spring plate 12, physically considered a spring / mass system that could otherwise swing undamped. In the annular space 26 and in the piston chamber 28 there is a high pressure and arranged in a direction opposite to the closing direction 24 adjacent to the valve seat 22
Druckmittelraum 30 herrscht ein Niederdruck. Überschreitet der Hochdruck im Pressure medium space 30, there is a low pressure. Exceeds the high pressure in
Zusammenspiel mit dem Schließelement 14 einen Wert, der dem Äquivalent der Feder 10 entspricht, wird das Schließelement 14 entgegen der Schließrichtung 24 mit seinem Together with the closing element 14 a value corresponding to the equivalent of the spring 10, the closing element 14 is opposite to the closing direction 24 with his
Schließkegel 16 von dem Ventilsitz 20 abgehoben und Druckmittel kann über den Closing cone 16 lifted from the valve seat 20 and pressure medium can on the
Druckmittelraum 30 in eine Druckmittelsenke (nicht dargestellt) abfließen. Der Hochdruck ist damit auf den Wert, der dem Äquivalent der Feder 10 entspricht, begrenzt, wobei der Wert einstellbar beziehungsweise verstellbar ist. In dem in Figur 2 gezeigten zweiten Ausführungsbeispiel des erfindungsgemäßen Pressure medium chamber 30 in a pressure medium sink (not shown) drain. The high pressure is thus limited to the value corresponding to the equivalent of the spring 10, wherein the value is adjustable or adjustable. In the second embodiment of the invention shown in Figure 2
Druckbegrenzungsventils 1 sind in dem Gehäuse 2 zwei Druckverstelleinrichtungen 6 mit jeweils einer zugeordneten Aufnahme 4 im Wesentlichen spiegelbildlich angeordnet. Pressure relief valve 1 are arranged in the housing 2, two pressure adjustment devices 6, each with an associated receptacle 4 is substantially mirror-inverted.
Die in dem zweiten Ausführungsbeispiel dargestellten Aufnahmen 4 entsprechen der in Figur 1 gezeigten und oben beschriebenen Aufnahme 4 des ersten Ausführungsbeispiels. Die in dem zweiten Ausführungsbeispiel eingesetzten Druckverstelleinrichtungen 6 entsprechen weitgehend der in Figur 1 gezeigten und oben beschriebenen The receptacles 4 shown in the second embodiment correspond to the receptacle 4 of the first embodiment shown in FIG. 1 and described above. The pressure adjusting devices 6 used in the second exemplary embodiment largely correspond to those shown in FIG. 1 and described above
Druckverstelleinrichtung 6 des ersten Ausführungsbeispiels, wobei zwei unterschiedliche Varianten von mehrstückig ausgeführten Schließelementen 14 und Federtellern 12 dargestellt sind. Nachfolgend sollen diese unterschiedlichen Varianten beschrieben werden. Pressure adjustment device 6 of the first embodiment, wherein two different variants of multi-piece closing elements 14 and spring plates 12 are shown. Below, these different variants will be described.
Bei der auf der in der Zeichnung linken Seite dargestellten Variante sind der In the variant shown on the left in the drawing are the
Federteller 12 und das Schließelement 14 derart mehrstückig ausgebildet, dass ein kugelförmiger Endabschnitt des Schließelements 14 mit einer dementsprechend ausgebildeten Gegenfläche des Federtellers 12 in Anlage kommt. Dadurch können vorteilhafterweise Fluchtungsfehler zwischen der Feder 10 beziehungsweise dem Spring plate 12 and the closing element 14 so formed in several pieces that a spherical end portion of the closing element 14 comes with a correspondingly shaped mating surface of the spring plate 12 in abutment. This can advantageously misalignment between the spring 10 and the
Federteller 12 und dem Schließelement 14 ausgeglichen werden. Spring plate 12 and the closing element 14 are compensated.
Bei der auf der in der Zeichnung rechten Seite dargestellten Variante sind der In the variant shown on the right side in the drawing are the
Federteller 12 und das Schließelement 14 derart mehrstückig ausgebildet, dass ein zylinderförmiger Endabschnitt des Schließelements 14 mit einer dementsprechend ausgebildeten Gegenfläche des Federtellers 12 in Anlage kommt. Der Federteller 12 ist hier etwa hutförmig ausgebildet. Dadurch kann das Schließelement 14 mit seinem Spring plate 12 and the closing element 14 so formed in several pieces, that a cylindrical end portion of the closing element 14 comes with a correspondingly shaped counter surface of the spring plate 12 in abutment. The spring plate 12 is formed here approximately hat-shaped. This allows the closing element 14 with his
zylinderförmigen Endabschnitt gut in dem Federteller 12 geführt werden. cylindrical end portion are well guided in the spring plate 12.
Offenbart ist ein Druckbegrenzungsventil mit einem Gussgehäuse, dessen Ventilsitz oberflächengehärtet ist. Auf diese Weise ist ein Vorteil einer kostengünstigen Herstellung des Gehäuses mit innenliegenden Druckmittelkanälen Aufnahmen, insbesondere für eine Druckverstelleinrichtung, kombiniert mit einem Vorteil einer langlebigen Abdichtfunktion, gewährleistet über ein sicher durchzuführendes Verfahren, das wegen seiner guten Disclosed is a pressure relief valve with a cast housing, the valve seat is surface hardened. In this way, an advantage of a cost-effective production of the housing with internal pressure medium channels recordings, in particular for a Druckverstelleinrichtung, combined with an advantage of a durable sealing function, ensures a safe procedure to be performed, because of its good
Maßhaltigkeit - wenn überhaupt - lediglich eine reduzierte Nachbearbeitung erfordert. Wegen dieser Voraussetzung ist eine kompaktere und somit platzsparende Anordnung von in dem Gehäuse untergebrachten Funktionsbereichen, insbesondere einer Druckverstelleinrichtung und einer zugeordneten Aufnahme, ermöglicht. Insbesondere ist ein Ventilsitz derart anordenbar, dass er ausschließlich von einer einzigen Seite aus für das Oberflächenhärten und/oder für eine Nachbearbeitung mittels eines Werkzeugs zugänglich ist, insbesondere im Wesentlichen in Schließrichtung des Schließelements. Dimensional accuracy - if any - requires only a reduced post-processing. Because of this requirement, a more compact and thus space-saving arrangement of housed in the housing functional areas, in particular a pressure adjustment device and an associated receptacle, allows. In particular, a valve seat can be arranged such that it is accessible exclusively from a single side for surface hardening and / or for post-processing by means of a tool, in particular essentially in the closing direction of the closing element.
Bezuqszeichenliste LIST OF REFERENCES
1 Druckbegrenzungsventil1 pressure relief valve
2 Gehäuse 2 housings
4 Aufnahme  4 recording
6 Druckverstelleinrichtung 6 pressure adjustment
8 Reduzierstück 8 reducer
10 Feder  10 spring
12 Federteller  12 spring plate
14 Schließelement 14 closing element
16 Schließkegel 16 closing pins
18 Führungskolben 18 guide pistons
20 Ventilsitz 20 valve seat
22 Übergang  22 transition
24 Schließrichtung  24 closing direction
26 Ringraum  26 annulus
28 Kolbenraum  28 piston chamber
30 Druckmittelraum  30 pressure medium space

Claims

Patentansprüche Patent claims
Druckbegrenzungsventil mit einem Gehäuse (2), und mit einem darin ausgebildeten Ventilsitz (20), der über ein federbelastetes Schließelement (14) des Pressure relief valve with a housing (2), and with a valve seat (20) formed therein, which has a spring-loaded closing element (14) of the
Druckbegrenzungsventils verschließbar ist, Pressure relief valve can be closed,
dadurch gekennzeichnet, dass das Gehäuse (2) aus Gusseisen mit Kugelgraphit besteht, wobei das Gehäuse (2) mindestens in einem Bereich des Ventilsitzes (20) oberflächengehärtet ist. characterized in that the housing (2) consists of spheroidal graphite cast iron, the housing (2) being surface-hardened at least in an area of the valve seat (20).
Druckbegrenzungsventil nach Anspruch 1 , wobei in dem Gehäuse Pressure relief valve according to claim 1, wherein in the housing
(2) eine (2) one
Aufnahme (4) vorgesehen ist, in der zumindest teilweise eine Recording (4) is provided, in which at least partially one
Druckverstelleinrichtung (6) angeordnet ist, wobei die Aufnahme (4) den Ventilsitz (20) enthält. Pressure adjustment device (6) is arranged, the receptacle (4) containing the valve seat (20).
3. Druckbegrenzungsventil nach Anspruch 1 oder 2, wobei der Ventilsitz (20) von der Druckverstelleinrichtung (6) aus etwa in einer Schließrichtung (24) des 3. Pressure relief valve according to claim 1 or 2, wherein the valve seat (20) from the pressure adjusting device (6) approximately in a closing direction (24) of the
Schließelements (14) angeordnet ist. Closing element (14) is arranged.
4. Druckbegrenzungsventil nach einem der Ansprüche 1 bis 3, wobei der Ventilsitz (20) von einer einzigen Seite aus für das Oberflächenhärten und/oder für eine 4. Pressure relief valve according to one of claims 1 to 3, wherein the valve seat (20) from a single side for surface hardening and / or for a
Nachbearbeitung mittels eines Werkzeugs durch die Aufnahme (4) zugänglich ist. Post-processing using a tool is accessible through the receptacle (4).
5. Druckbegrenzungsventil nach einem der Ansprüche 1 bis 4, wobei das 5. Pressure relief valve according to one of claims 1 to 4, wherein the
Schließelement (14) einen Schließkegel (16) aufweist, von dem ausgehend in Closing element (14) has a closing cone (16), starting from which in
Schließrichtung (24) ein Führungskolben (18) an dem Schließelement (14) angeordnet ist. Closing direction (24) a guide piston (18) is arranged on the closing element (14).
6. Druckbegrenzungsventil nach Anspruch 5, wobei von dem Schließkegel (16) 6. Pressure relief valve according to claim 5, wherein from the closing cone (16)
ausgehend entgegen der Schließrichtung (24) ein Federteller (12) der starting against the closing direction (24) a spring plate (12).
Druckverstelleinrichtung (6) an dem Schließelement (14) angeordnet ist. Pressure adjustment device (6) is arranged on the closing element (14).
7. Druckbegrenzungsventil nach Anspruch 6, wobei das Schließelement (14) und der Federteller (12) einstückig oder mehrstückig ausgebildet sind. 7. Pressure relief valve according to claim 6, wherein the closing element (14) and the spring plate (12) are formed in one piece or in several pieces.
8. Druckbegrenzungsventil nach Anspruch 6 oder 7, wobei ein Übergang (22) der Aufnahme (4) zwischen dem Federteller (12) und dem Ventilsitz (20) zumindest teilweise konisch ausgebildet ist. 8. Pressure relief valve according to claim 6 or 7, wherein a transition (22) of the receptacle (4) between the spring plate (12) and the valve seat (20) is at least partially conical.
9. Druckbegrenzungsventil nach einem der vorhergehenden Ansprüche, das in einer Zwischenplattenbauweise ausgebildet ist. 9. Pressure relief valve according to one of the preceding claims, which is designed in an intermediate plate design.
10. Druckbegrenzungsventil nach einem der vorhergehenden Ansprüche, das 10. Pressure relief valve according to one of the preceding claims, that
direktgesteuert ist. is directly controlled.
1 1. Druckbegrenzungsventil nach einem der Ansprüche 2 bis 10, wobei in dem 1 1. Pressure relief valve according to one of claims 2 to 10, wherein in the
Gehäuse (2) im Wesentlichen spiegelbildlich zueinander angeordnet zwei Aufnahmen (4) vorgesehen sind. Housing (2) arranged essentially mirror images of one another, two receptacles (4) are provided.
EP15816434.3A 2014-12-16 2015-12-16 Pressure-limiting valve Active EP3234426B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15816434T PL3234426T3 (en) 2014-12-16 2015-12-16 Pressure-limiting valve

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014225983.5A DE102014225983A1 (en) 2014-12-16 2014-12-16 Pressure relief valve
PCT/EP2015/080020 WO2016097000A1 (en) 2014-12-16 2015-12-16 Pressure-limiting valve

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EP3234426A1 true EP3234426A1 (en) 2017-10-25
EP3234426B1 EP3234426B1 (en) 2019-06-26

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ID=55024111

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Country Link
US (1) US10890267B2 (en)
EP (1) EP3234426B1 (en)
CN (1) CN107002897B (en)
DE (1) DE102014225983A1 (en)
PL (1) PL3234426T3 (en)
WO (1) WO2016097000A1 (en)

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1578046A (en) * 1924-02-16 1926-03-23 Logan Henry Havelock Safety valve for hot-water heaters
US2071749A (en) * 1936-02-20 1937-02-23 Gen Fire Extinguisher Co Valve
US2227629A (en) * 1937-12-14 1941-01-07 Bliss E W Co Pressure control valve and the like
US2256365A (en) * 1941-04-29 1941-09-16 Foster Engineering Co Dual relief valve
JPS5524980A (en) * 1978-08-14 1980-02-22 Mitsubishi Heavy Ind Ltd Cast iron and spheroidal graphite cast iron surface hardening
DE4429804A1 (en) 1994-08-23 1996-02-29 Johnson Service Co Process for the production of series valves used in heating, ventilation and air conditioning
DE19644356C2 (en) * 1996-10-25 1999-02-18 Baelz Gmbh Helmut Seat valve with molded valve seat
DE19804752A1 (en) 1998-02-06 1999-08-12 Mannesmann Rexroth Ag Seat valve
DE102004040359B4 (en) 2004-08-20 2011-06-16 Helmut Bälz GmbH control valve
GB2431709B (en) * 2004-08-27 2009-06-17 Vetco Gray Inc Low friction coatings for load bearing surfaces
CN2786395Y (en) * 2005-04-07 2006-06-07 王新民 Special-shaped thin wall valve
CN2839690Y (en) 2005-07-22 2006-11-22 上海立新液压有限公司 Superimposed relief valve
EP2463391A1 (en) * 2010-12-09 2012-06-13 Perkins Engines Company Limited Induction hardened component containing a hole which is unhardened.
CN202612661U (en) * 2012-01-19 2012-12-19 新昌县利永达制冷机械有限公司 Nodular cast iron air-conditioner stop valve
FR3039620B1 (en) * 2015-07-28 2017-08-25 Poclain Hydraulics Ind PRESSURE LIMITATION DEVICE, IN PARTICULAR FOR A VEHICLE ASSISTANCE SYSTEM

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PL3234426T3 (en) 2019-11-29
DE102014225983A1 (en) 2016-06-16
EP3234426B1 (en) 2019-06-26
WO2016097000A1 (en) 2016-06-23
US20190093782A1 (en) 2019-03-28
WO2016097000A9 (en) 2017-03-30
US10890267B2 (en) 2021-01-12
CN107002897B (en) 2021-08-03
CN107002897A (en) 2017-08-01

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