EP3228561B1 - Valve for a pressure medium tank - Google Patents

Valve for a pressure medium tank Download PDF

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Publication number
EP3228561B1
EP3228561B1 EP17164450.3A EP17164450A EP3228561B1 EP 3228561 B1 EP3228561 B1 EP 3228561B1 EP 17164450 A EP17164450 A EP 17164450A EP 3228561 B1 EP3228561 B1 EP 3228561B1
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EP
European Patent Office
Prior art keywords
valve
bearing
valve body
section
resilient
Prior art date
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EP17164450.3A
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German (de)
French (fr)
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EP3228561A1 (en
Inventor
Benjamin Scherer
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Vebo Genossenschaft
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Vebo Genossenschaft
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Publication of EP3228561A1 publication Critical patent/EP3228561A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/44—Valves specially adapted therefor; Regulating devices

Definitions

  • the present invention relates to a valve for a pressure medium container, in particular for a pressure medium container, as it is used in the processing and processing of food, for example in devices for foaming and dispensing liquids.
  • pressure fluid container with a valve, with which the container can be opened and closed, so that the container can be interchangeable attached to the devices that require the pressure medium.
  • pressure fluid containers are widely used e.g. in extinguishing devices, devices for dispensing building materials, stoves and devices for processing and processing of food, especially in devices for frothing and dispensing liquids in the food industry, such. Cream.
  • the pressure vessels are attached to the valve area on the device, e.g. by means of a screw or latching connection, or the pressure vessel with the valve area are pushed over a corresponding receptacle on the device, wherein at the same time the valve can be opened by moving a locking bolt on the valve.
  • Such a pressure medium container and its use in a device for foaming and dispensing liquids is eg in the EP 2 255 886 A1 described.
  • a pressure medium container with a conventional non-return valve is used, in which a check pin is displaced against the pressure force of the pressure medium when placed on the device, thereby opening the container.
  • the check pin should be pushed back by the pressure medium to close the valve so that no pressure medium escapes.
  • the pressure in the container is not sufficient to move the bolt sufficiently into a closed position in the valve, which results in the disadvantage that a residual pressure medium can escape from the container.
  • coil springs are used, the Tension the recoil pin and tighten to open the valve.
  • FIG WO 2015/032963 An example of such an arrangement is shown in FIG WO 2015/032963 shown.
  • Such check valves conventionally consist of at least three components and therefore has a complicated structure.
  • pressure fluid containers with a membrane closure are known in which the membrane is pierced when mounted on a device with a hollow needle to produce an outlet from the container.
  • the membrane is thus permanently damaged, so that a closure of the pressure medium container is no longer possible.
  • Other relevant prior art documents are: EP 1723480 and WO 2005039999 ,
  • a valve for a pressure medium container consists exclusively of a valve bearing with a flow-through channel and a valve body movably mounted in the flow-through channel for closing the flow-through channel. It is therefore deliberately used a structure that dispenses with the use of a coil spring, which makes it possible to use only two components. This results in a simple and inexpensive, but nevertheless confident construction.
  • the valve may be disposed in a neck portion of a fluid reservoir such that the flow passage provides access to the interior of the reservoir.
  • the valve bearing with the valve body mounted therein is preferably at least partially disposed within the neck portion.
  • the throughflow channel has a constriction, which can be sealed off by the valve body. To shut off the valve body is, for example, close to one or more circumferential edges or a taper of the narrow area.
  • the valve body is movable against a pressing force from a shut-off position in which the flow passage is blocked to a passage position in which the flow passage is opened. For this purpose, it is removed in the axial direction of the channel from the throat area, advantageously in the direction of the pressure medium container and thus against a compressive force exerted by the pressure medium in the container on the valve body.
  • the valve bearing is formed with at least one resilient region which acts on the valve body such that at least after a movement of the valve body in the passage position, the at least one resilient region is stretched, i. is deflected, and generates a compressive force on the valve body.
  • the at least one resilient region is also in the shut-off position of the valve body on this and is sufficiently biased to hold the valve body in the shut-off position.
  • the valve bearing of the valve is arranged on the pressure medium container such that one end is aligned with the at least one resilient region against an outflow direction of the pressure medium and the opposite end is accessible from outside the container.
  • the at least one elastic region is also arranged in the region of the neck portion of the container and comes to rest within the pressure medium container. The compressive force of the elastic region or regions thus acts in the same direction as a pressure of the pressure medium in the pressure medium container.
  • valve body To open the flow channel, the valve body must be moved against the clamping force of the elastic region or the areas of the valve bearing. As soon as no force is exerted on the valve body to deflect out of the shut-off position, it is pressed back into the shut-off position by the elastic force of the elastic region or the regions.
  • a deflection force is exerted on the valve body, for example by a component of a foaming device, when the pressure fluid container with the valve is mounted on the device.
  • the flow channel of the valve bearing to the side of the device out, that is, to the outside of the pressure fluid container, open, so that the component of the valve body operate and move relative to the valve bearing.
  • the valve body is preferably dimensioned such that, after its insertion into the valve bearing, it engages in the shut-off position on the at least one resilient region of the valve bearing such that it is biased and exerts a pressure force in the direction of the shut-off position and holds the valve body in the shut-off position.
  • the valve bearing with the at least one resilient region is formed integrally and serves for the movable mounting of the valve body, for mounting the valve in a pressure medium container and for controlling the valve between an open and a closed position.
  • the valve according to the present invention therefore consists exclusively of two components, which are given by the valve bearing and the valve body. There are no additional spring elements or sealing elements needed to meet the different requirements for the valve.
  • the valve according to the invention can therefore be produced inexpensively and easily manufactured.
  • the valve bearing is formed as a sleeve-shaped body through which the flow passage extends. From one end of the sleeve-shaped body, the at least one elastic region projects at least in sections in the direction of the sleeve axis. At the other end, the sleeve-shaped body is accessible for actuation of the valve body, as previously described.
  • a connection device for connecting the pressure medium container to a device for example a pipe section of the connection device
  • a device for example a pipe section of the connection device
  • the thrust force counteracts the resilience of the elastic region. Since the at least one elastic region protrudes into the throughflow channel of the sleeve body, it can be deflected along the sleeve axis when the valve body is displaced. At the same time, it can serve to hold the valve body in the valve bearing. In this case, the valve body between the narrow portion of the valve bearing and the protruding portion of the resilient portion or the areas is stored and is pressed by the pressure force of the elastic region, or the areas in the shut-off position.
  • a plurality of resilient areas are distributed symmetrically around the circumference of the flow passage of the valve bearing and the portions of the resilient areas projecting toward the bearing axis, symmetrically engage around the circumference of the valve body at this.
  • the valve body is centered along the axis of the flow channel and aligned centrally on the constriction area of the valve bearing.
  • a plurality of elastic regions in the form of spring tongues are provided, which are arranged in a circle around the circumference of the valve bearing.
  • the spring tongues are e.g. in the longitudinal direction of one end of a sleeve body as a valve store.
  • the spring tongues each have a support portion which protrudes in the direction of the bearing axis and on which engages the valve body.
  • the valve body is thus held all around on its outer surface by the support portions of the spring tongues. It is held in a central position in the valve bearing and can be secured in the shut-off position.
  • the two components of the valve according to the invention are provided, for example, as follows:
  • the valve bearing has a constriction area with a small diameter and then a storage area with a large diameter, which is larger than the diameter of the narrow area.
  • the storage area is bounded opposite the narrow area by the inwardly projecting portions of the resilient areas, eg the support sections.
  • the valve body is preferably formed cone-shaped with a conical portion and in some areas has a larger diameter than the narrow region of the valve bearing. As conical a conically tapered shape should be understood.
  • the valve body may also be in the form of a double cone, which tapers conically from a thick central portion in both axial directions.
  • the valve body has a pin portion of constant diameter which can protrude through the narrow region of the valve bearing.
  • the narrow region of the valve bearing can thus serve as a guide for centering the valve body in the flow-through.
  • the cone section is mounted in the bearing area of the valve bearing and closes the narrow area in the shut-off position.
  • the Diameter of the bearing area of the valve bearing is greater than the diameter of the thick portion of the cone section. If spring tongues are provided as spring-elastic areas of the valve bearing, these surround the conical section of the valve body and form the bearing area of the valve bearing.
  • the protruding support sections of the spring tongues engage behind the thick conical section of the valve body, so that the conical section tapering towards the narrow region of the valve bearing comes to rest completely in the bearing area of the valve bearing.
  • the support sections of the spring tongues project obliquely toward the bearing axis. Together they form a conically tapered attack surface and a narrowing passage.
  • the diameter of the passage is smaller than a diameter of the valve body.
  • the diameter of the passage is smaller than the thickest diameter of the cone portion.
  • the valve body has a double cone portion having a first conical portion and a second conical portion tapering from a central thick portion to the opposite ends of the double cone portion, as described above.
  • the valve body is mounted in the valve bearing in such a way that the middle thick section is mounted between a constriction area of the valve bearing and the inwardly standing support sections of the spring tongues.
  • the first conical section protrudes in the direction of the narrow area. In the shut-off position, the first conical section projects into the narrow area until it comes to lie sealingly on the circumference of the narrow area.
  • the second conical section protrudes through the support sections, which engage on the second conical section.
  • the support sections slide axially along the conical surface of the second cone portion and are thereby clamped. If the feed force leans on the valve body, the resiliently deflected support sections press against the conical surface and press the valve body in the direction of the narrow area until it sits sealingly against it.
  • the conical surface of the second cone portion serves for better conversion of the radially acting restoring force of the spring tongues into an axially acting pressure force on the valve body.
  • the thrust stroke of the valve body e.g. is achieved by a connection device for connecting the pressure medium container to a device is limited so that the valve body is not pushed out of engagement with the resilient regions of the valve bearing. That is, the thick cone portion is not pressed from the storage area of the valve bearing and the support portions in the pressure medium container.
  • a stop between valve body and valve bearing are provided, which blocks a displacement out of engagement with the resilient regions of the valve bearing. It is also possible to provide a stop between the valve bearing and the connection device which triggers the feed, so that the connection device is stopped by the valve bearing.
  • the tips of the support portions of the spring tongues extend obliquely outward.
  • the ends, or tips thus form an insertion opening whose diameter is greater than a diameter of the valve body.
  • the diameter of the insertion opening may also be larger than a thick portion of a conical valve body, as described above.
  • This insertion opening facilitates the insertion of the valve body in the valve bearing during assembly of the valve.
  • the valve body is inserted and inserted, for example, with its pin portion in the insertion opening, wherein the resilient portion are bent by the thick portions of the valve body until the valve body comes to rest with its thick portion in the bearing area of the valve bearing. Behind the thick section, the elastic region close slightly, so that they continue to attack the valve body and now press it in the direction of the narrow portion of the valve bearing.
  • the valve bearing can, as described above, have symmetrical circumferentially arranged resilient regions which are provided with inclined surfaces extending obliquely to the bearing axis of the valve bearing. These inclined surfaces form a sliding surface for sliding the valve body.
  • the bevels are e.g. formed by conically tapered engagement surface of the spring tongues, which transmit a biasing force of the resilient regions on the valve body.
  • inclined surfaces can serve as sliding surfaces during insertion of the valve body in the storage area of the valve bearing and facilitate the spreading of the resilient areas.
  • a pressure medium container according to the invention is equipped with a valve described above.
  • the valve is arranged in a neck portion of the container.
  • the valve is secured by a snug fit in the neck portion.
  • the fit can be achieved for example between an annular groove and an annular bead between the valve bearing and container.
  • the valve bearing abuts with its constriction on the inner circumference of the pressure medium container.
  • An outer area for insertion of a connection device may extend to outside the container.
  • the at least one resilient region, which adjoins the narrow region of the valve bearing lies on the inside of the container and an end region of the at least one elastic region protrudes inward from an inner wall of the container.
  • the portion which protrudes in the direction of the bearing axis protrudes from the inner wall of the container.
  • the elastic regions are thus partially supported outwards against the container inner wall and are bent up by the valve body in the end region. As a result, the restoring force is increased to the valve body.
  • a valve and a pressure medium container according to the invention can be easily connected to a printing device, since the elastic regions reliably open the valve when connecting the container. Also, the container can be easily replaced, because the valve is securely closed by the resilient areas again, as soon as it is removed from the printing device. Furthermore, the valve can be manufactured cost-saving, since it consists exclusively of two components and can be assembled without great effort.
  • FIG. 1 a valve according to the present invention is shown, which is inserted into a neck portion 1 of a pressure medium container 2.
  • FIG. 1 the valve is shown in a shut-off position in which the pressure medium container 2 can be stored or transported.
  • FIG. 2 is a connection device 3 with a pipe section 4 and pressure medium lines 5 mounted on the valve, so that the pipe section 4 acts on the valve and this is present in a passage position in which a pressure medium in the outflow S from the pressure medium container 2 through the valve and the pressure medium lines. 5 can escape.
  • the valve consists of only two components: a valve bearing 6 and a valve body 7.
  • the valve bearing 6 is as sleeve-shaped body having an axially extending passage formed as a flow passage 25 and is substantially cylindrically symmetric about a bearing axis A.
  • the valve bearing 6 has an outlet 8, a narrowing area 9, a storage area 10 and an insertion area 11.
  • the constriction area 9 has a smaller diameter than the storage area 10 and is closed by the valve body 7.
  • the outlet region 8 can have a larger diameter than the narrow region 9.
  • the outlet region 8 serves as an introduction region for the tube section 4 for actuating the valve body 7. Accordingly, the introduction region 11 is located in the outflow direction S first and the outlet region is behind it.
  • valve bearing 6 is firmly inserted in the neck portion 1 of the pressure medium container 2.
  • a snug fit is provided between the neck portion 1 and outer circumference of the valve bearing 6.
  • the valve bearing 6 for this purpose, for example, a circumferential annular groove 12 and a shoulder 13.
  • the neck portion 1 of the pressure medium container 2 may have a corresponding annular bead 14. When fitted, the annular bead 14 then engages in the annular groove 12 and the shoulder 13 rests on the end of the neck portion 1.
  • the neck portion 1 of the pressure medium container 2 is pulled radially over the shoulder 13 on the valve bearing 6, so that a stable fit is formed.
  • the valve bearing 6 is secured in this snug fit against an axial and against a radial displacement in the neck portion 1, in particular blocks the paragraph 13 a displacement of the valve bearing 6 when pressing a connection device 3 on the valve.
  • the narrow region 9 is located in the region of the annular bead 12.
  • the outlet region 8 is located outside of the pressure medium container 2 and is accessible for placing the connection device 3.
  • the storage area 10 is located within the neck portion 1.
  • the insertion portion may be within the neck portion 1 or already protrude into the widening portion of the pressure medium container.
  • the valve bearing 6 is formed with a plurality of elastic regions in the form of spring tongues 15.
  • the spring tongues 15 engage the valve body 7 in such a way that, at least after a movement of the valve body 7, they are stretched from the shut-off position into the forward position and generate a restoring pressure force on the valve body, such as FIG. 2 is explained in more detail.
  • the spring tongues 15 protrude in the longitudinal direction from one end of the valve bearing 6, so that they are aligned in the direction of the pressure medium container 2 and counter to the outflow S direction.
  • a plurality of spring tongues 15 are provided distributed symmetrically around the circumference of the valve bearing 6.
  • six spring tongues 15 are provided, as in FIG. 3 seen. Between the spring tongues 15 remain intermediate spaces 26, which constitute longitudinal slots in the valve bearing 6.
  • a portion of the spring tongues 15 protrudes as a support portion 16 in the direction of the bearing axis A of the valve bearing 6.
  • the spring tongues 15 engage with their support portions 16 on the valve body 7.
  • the spring tongues 15 are distributed in a circle around the circumference of the valve bearing 6 and enclose the bearing area 10 between them.
  • the storage area 10 extends in the longitudinal direction from the narrow area 9 to the support sections 16.
  • the support portions 16 of the spring tongues 15 project obliquely inwards towards the bearing axis.
  • the resulting bevels 17 of the support portions 16 together form an elastically expandable, conical inclined surface in the storage area 10 of the valve bearing 6, which tapers towards the end of the storage area 10.
  • the support portions 16 further enclose a passage 18 whose diameter is smaller than a diameter of the bearing portion 10 and a diameter of the valve body.
  • the resulting tongues 20 at the end of the spring tongues 15 together form an elastically expandable, conical inclined surface in the insertion region 11 of the valve bearing 6, the widens towards the end of the valve bearing 6.
  • the slopes 17 and the slopes 20 form between them the support portions 16.
  • the diameter of the insertion opening 19 between the ends of the valve bearing 6 is greater than a diameter of the valve body 7.
  • the inclined surfaces form sliding surfaces along which the valve body 7 can slide when he is inserted into the valve bearing 6 (bevels 20) or when it is moved from the shut-off position to the forward position (bevels 17), as in FIG. 2 is explained in more detail.
  • the valve body 7 is conically formed with a cone portion and a pin portion 21.
  • the cone portion is formed as a double cone section.
  • the cone section comprises a first conical portion 22 and a second conical portion 23 tapering from a middle thick portion 24 toward the ends of the double cone portion.
  • the conical section has a larger diameter in the region of the thick section 24 than the narrow section.
  • the conical section is essentially mounted in the bearing area 10 of the valve bearing 6, wherein the first conical section 22 projects into the constricting area 9 and can abut it all around, so that it closes the narrow area 9 in the shut-off position and closes the flow-through channel 25 through the valve bearing 6 ,
  • the middle thick portion 24 comes to lie between the narrow portion 9 and the support portions 16 of the spring tongues 15.
  • the second conical section 23 protrudes through the support sections 16, wherein the support sections 16 rest against the surface of the section 23.
  • the spring tongues 15 are slightly tensioned, so that they exert a radial force on the valve body 7, which is converted by the conical taper of the portion 23 in an axial force in the direction of the outflow direction S.
  • valve body 7 For mounting the valve body 7 in the valve bearing 6, the valve body 7 can be inserted with the pin portion 21 through the insertion opening 19 and the passage 16 in the valve bearing 6.
  • the support portions 16 come to lie on the first conical surface 22 of the cone portion and are widened by this during insertion.
  • the spring tongues 15 narrow again and securely receive the valve body in the bearing region 10, the support sections 16 coming to rest on the second conical surface 23 of the conical section and the valve body in the shut-off position against the constriction area 9 of the valve bearing 6 press.
  • valve body 7 could also be designed as a simple cone.
  • the thick cone portion forms an end edge of the valve body, which bears against the bevels 17 of the spring tongues 15.
  • the support portions 16 converge behind the cone portion so that the valve body does not protrude.
  • a radial clamping force of the spring tongues 15 is transmitted via the bevels 17 to the end edge of the valve body and converted into an axial compressive force in the direction of the narrow region 9.
  • FIG. 2 the valve is shown in a passage position.
  • the valve body 7 was from the pipe section 4 of the connecting device 3 from the shut-off position in the passage position axially against the outflow S advanced.
  • the pipe section 4 which sits firmly in the connection device 3, engages the end of the valve body 7, which protrudes into the outlet 8, and moves the valve body 7 until the connection device 3 abuts the end of the valve bearing 6 and blocks further advancement is.
  • the connection device 3 is fastened in the passage position in a conventional manner on the pressure medium container or on the valve.
  • the spring tongues 15 of the valve bearing are advantageously biased both in a passage position and in a shut-off position. It is thus ensured that the valve remains closed when the valve body 7 is not deflected. Also in the passage position of the valve body 7 is not shifted within the valve bearing 6 so far that the support portions 16 would slip over the thick portion 24 of the valve body 7. The valve body therefore remains securely held in the valve bearing.
  • connection device 3 If the pressure fluid tank 2 are removed from the connection device 3, z. B. because the container is empty or for safety reasons, the attachment of the connection device is released and the pipe section 4 removed when removing the connection device from the valve body 7. Therefore, there is no deflection force acting on the valve body 7, so that they are displaced by the pressure force of the spring tongues 15 back into the shut-off position can.
  • the support sections 16 press radially against the second conical section 23 and press the first conical section 22 in the direction of the narrow region 9 of the valve bearing 6 until the conical section tightly closes the narrow area.

Description

Technisches Gebiet der ErfindungTechnical field of the invention

Die vorliegende Erfindung betrifft ein Ventil für einen Druckmittelbehälter, insbesondere für einen Druckmittelbehälter, wie er bei der Be- und Verarbeitung von Lebensmitteln verwendet wird, beispielsweise bei Vorrichtungen zum Aufschäumen und Abgeben von Flüssigkeiten.The present invention relates to a valve for a pressure medium container, in particular for a pressure medium container, as it is used in the processing and processing of food, for example in devices for foaming and dispensing liquids.

Beschreibung des Standes der TechnikDescription of the Prior Art

Aus dem Stand der Technik ist es bekannt, Druckmittelbehälter mit einem Ventil auszustatten, mit dem der Behälter geöffnet und geschlossen werden kann, so dass die Behälter auswechselbar an den Vorrichtungen, die das Druckmittel benötigen, angebracht werden können. Derartige Druckmittelbehälter sind weit verbreitet z.B. bei Löschvorrichtungen, Vorrichtungen zur Abgabe von Baumaterialien, Kochern und Vorrichtungen zum Be- und Verarbeitung von Lebensmitteln, insbesondere bei Vorrichtungen zum Aufschäumen und Abgeben von Flüssigkeiten im Lebensmittelbereich, wie z. B. Rahm. In der Regel werden die Druckbehälter mit dem Ventilbereich auf der Vorrichtung befestigt, z.B. mittels einer Schraub- oder Rastverbindung, oder die Druckbehälter mit dem Ventilbereich werden über eine entsprechende Aufnahme auf der Vorrichtung hinübergeschoben, wobei gleichzeitig das Ventil durch Verschieben eines Verschlussbolzens am Ventil geöffnet werden kann.From the prior art it is known to equip pressure fluid container with a valve, with which the container can be opened and closed, so that the container can be interchangeable attached to the devices that require the pressure medium. Such pressure fluid containers are widely used e.g. in extinguishing devices, devices for dispensing building materials, stoves and devices for processing and processing of food, especially in devices for frothing and dispensing liquids in the food industry, such. Cream. Typically, the pressure vessels are attached to the valve area on the device, e.g. by means of a screw or latching connection, or the pressure vessel with the valve area are pushed over a corresponding receptacle on the device, wherein at the same time the valve can be opened by moving a locking bolt on the valve.

Ein derartiger Druckmittelbehälter und seine Verwendung bei einer Vorrichtung zum Aufschäumen und Abgeben von Flüssigkeiten ist z.B. in der EP 2 255 886 A1 beschrieben. Es wird ein Druckmittelbehälter mit einem herkömmlichen Rückschlagventil verwendet, bei dem ein Rückschlagbolzen beim Aufsetzen auf die Vorrichtung gegen die Druckkraft des Druckmittels verschoben und dadurch der Behälter geöffnet wird. Beim Abnehmen des Druckmittelbehälters soll der Rückschlagbolzen durch das Druckmittel wieder zurückgeschoben werden, um das Ventil zu schliessen, damit kein Druckmittel entweicht. Es kann jedoch vorkommen, dass der Druck im Behälter nicht ausreicht, um den Bolzen ausreichend in eine Verschlussposition im Ventil zu verschieben, woraus sich der Nachteil ergibt, dass ein Druckmittelrest aus dem Behälter entweichen kann. Häufig werden in den Rückschlagventilen Schraubenfedern verwendet, die den Rückschlagbolzen vorspannen und zum Öffnen des Ventils weiter gespannt werden. Ein Beispiel einer solchen Anordnung wird in WO 2015/032963 gezeigt. Solche Rückschlagventile bestehen herkömmlich aus mindestens drei Bauteilen und weist daher eine komplizierte Struktur auf.Such a pressure medium container and its use in a device for foaming and dispensing liquids is eg in the EP 2 255 886 A1 described. A pressure medium container with a conventional non-return valve is used, in which a check pin is displaced against the pressure force of the pressure medium when placed on the device, thereby opening the container. When removing the pressure medium tank, the check pin should be pushed back by the pressure medium to close the valve so that no pressure medium escapes. However, it may happen that the pressure in the container is not sufficient to move the bolt sufficiently into a closed position in the valve, which results in the disadvantage that a residual pressure medium can escape from the container. Often in the check valves coil springs are used, the Tension the recoil pin and tighten to open the valve. An example of such an arrangement is shown in FIG WO 2015/032963 shown. Such check valves conventionally consist of at least three components and therefore has a complicated structure.

Alternativ sind Druckmittelbehälter mit einem Membranverschluss bekannt, bei welchen die Membran beim Anbringen an einer Vorrichtung mit einer Hohlnadel durchstochen wird, um einen Auslass aus dem Behälter herzustellen. Bei solchen Druckmittelbehältern wird die Membran also dauernd beschädigt, so dass ein Abschliessen des Druckmittelbehälters nicht mehr möglich ist. Weitere relevante Stand der Technik Dokumente sind: EP 1723480 und WO 2005039999 .Alternatively, pressure fluid containers with a membrane closure are known in which the membrane is pierced when mounted on a device with a hollow needle to produce an outlet from the container. In such pressure medium containers, the membrane is thus permanently damaged, so that a closure of the pressure medium container is no longer possible. Other relevant prior art documents are: EP 1723480 and WO 2005039999 ,

Offenbarung der ErfindungDisclosure of the invention

Es ist daher eine Aufgabe der vorliegenden Erfindung ein Ventil und einen Druckmittelbehälter zu schaffen, die ein einfaches Anschliessen und Austauschen des Behälters an eine Druckvorrichtung ermöglichen, die ein zuverlässiges Schliessen des Behälters sicherstellen, wodurch Verunreinigungen im Druckmittelbehälter verhindert werden können, und die zudem eine Wiederbefüllung des Behälters erlauben und einfach und kostengünstig in der Konstruktion und Herstellung sind.It is therefore an object of the present invention to provide a valve and a pressure fluid container, which allow easy connection and replacement of the container to a printing device, which ensure a reliable closure of the container, whereby impurities in the pressure fluid container can be prevented, and also a refill allow the container and are simple and inexpensive to design and manufacture.

Diese Aufgabe wird von der Erfindung insbesondere durch ein Ventil nach Anspruch 1 und durch einen Druckmittelbehälter nach Anspruch 11 gelöst. Vorteilhafte Ausgestaltungen und weitere Ausführungsbeispiele sind in den abhängigen Ansprüchen beschrieben.This object is achieved by the invention in particular by a valve according to claim 1 and by a pressure medium container according to claim 11. Advantageous embodiments and further embodiments are described in the dependent claims.

Ein Ventil für einen Druckmittelbehälter nach der vorliegenden Erfindung besteht ausschliesslich aus einem Ventillager mit einem Durchströmkanal und einem in dem Durchströmkanal beweglich gelagerten Ventilkörper zum Verschliessen des Durchströmkanals. Es wird also bewusst eine Struktur verwendet, die auf den Gebrauch einer Schraubenfeder verzichtet, wodurch es möglich ist, lediglich zwei Bauteile zu verwenden. Daraus ergibt sich eine einfache und kostengünstige, aber trotzdem zuversichtliche Bauweise. Das Ventil kann in einem Halsabschnitt eines Druckmittelbehälters derart angeordnet werden, dass der Durchströmkanal einen Zugang zum Behälterinneren schafft. Das Ventillager mit dem darin gelagerten Ventilkörper ist vorzugsweise zumindest teilweise innerhalb des Halsabschnitts angeordnet. Der Durchströmkanal weist einen Engbereich auf, der von dem Ventilkörper dichtend abgesperrt werden kann. Zum Absperren liegt der Ventilkörper zum Beispiel dicht an einer oder mehreren umlaufenden Kanten oder einer Verjüngung des Engbereichs auf.A valve for a pressure medium container according to the present invention consists exclusively of a valve bearing with a flow-through channel and a valve body movably mounted in the flow-through channel for closing the flow-through channel. It is therefore deliberately used a structure that dispenses with the use of a coil spring, which makes it possible to use only two components. This results in a simple and inexpensive, but nevertheless confident construction. The valve may be disposed in a neck portion of a fluid reservoir such that the flow passage provides access to the interior of the reservoir. The valve bearing with the valve body mounted therein is preferably at least partially disposed within the neck portion. The throughflow channel has a constriction, which can be sealed off by the valve body. To shut off the valve body is, for example, close to one or more circumferential edges or a taper of the narrow area.

Der Ventilkörper ist gegen eine Druckkraft von einer Absperrposition, in der der Durchströmkanal gesperrt ist, in eine Durchlassposition, in der der Durchströmkanal geöffnet ist, beweglich. Hierfür wird er in axialer Richtung des Kanals vom Engbereich entfernt, vorteilhaft in Richtung des Druckmittelbehälters und somit entgegen einer Druckkraft, die vom Druckmittel im Behälter auf den Ventilkörper ausgeübt wird.The valve body is movable against a pressing force from a shut-off position in which the flow passage is blocked to a passage position in which the flow passage is opened. For this purpose, it is removed in the axial direction of the channel from the throat area, advantageously in the direction of the pressure medium container and thus against a compressive force exerted by the pressure medium in the container on the valve body.

Nach der Erfindung ist das Ventillager mit wenigstens einem federelastischen Bereich ausgebildet, der am Ventilkörper derart angreift, dass zumindest nach einer Bewegung des Ventilkörpers in die Durchlassposition der wenigstens eine federelastische Bereich gespannt ist, d.h. ausgelenkt ist, und eine Druckkraft auf den Ventilkörper generiert.According to the invention, the valve bearing is formed with at least one resilient region which acts on the valve body such that at least after a movement of the valve body in the passage position, the at least one resilient region is stretched, i. is deflected, and generates a compressive force on the valve body.

Vorzugsweise liegt der wenigstens ein federelastischer Bereich auch in der Absperrposition des Ventilkörpers an diesem an und ist ausreichend vorgespannt, um den Ventilkörper in der Absperrposition zu halten. Das Ventillager des Ventils ist derart am Druckmittelbehälter angeordnet, dass ein Ende mit dem wenigstens einen federelastischen Bereich entgegen einer Ausströmrichtung des Druckmittels ausgerichtet ist und das gegenüberliegende Ende von ausser halb des Behälters zugänglich ist. Vorzugsweise ist der wenigstens ein federelastischer Bereich ausserdem im Bereich des Halsabschnitts des Behälters angeordnet und kommt innerhalb des Druckmittelbehälters zu liegen. Die Druckkraft des federelastischen Bereichs oder der Bereiche wirkt somit in gleicher Richtung, wie ein Druck des Druckmittels im Druckmittelbehälter.Preferably, the at least one resilient region is also in the shut-off position of the valve body on this and is sufficiently biased to hold the valve body in the shut-off position. The valve bearing of the valve is arranged on the pressure medium container such that one end is aligned with the at least one resilient region against an outflow direction of the pressure medium and the opposite end is accessible from outside the container. Preferably, the at least one elastic region is also arranged in the region of the neck portion of the container and comes to rest within the pressure medium container. The compressive force of the elastic region or regions thus acts in the same direction as a pressure of the pressure medium in the pressure medium container.

Zum Öffnen des Durchströmkanals muss der Ventilkörper gegen die Spannkraft des federelastischen Bereichs oder der Bereiche des Ventillagers bewegt werden. Sobald auf den Ventilkörper keine Kraft zur Auslenkung aus der Absperrposition mehr ausgeübt wird, wird er durch Spannkraft des federelastischen Bereichs oder der Bereiche zurück in die Absperrposition gedrückt. Eine solche Auslenkkraft wird z.B. durch ein Bauteil einer Aufschäumvorrichtung auf den Ventilkörper ausgeübt, wenn der Druckmittelbehälter mit dem Ventil auf der Vorrichtung angebracht wird. Hierfür ist der Durchströmkanal des Ventillagers zur Seite der Vorrichtung hin, d.h. nach aussen aus dem Druckmittelbehälter, offen, so dass das Bauteil den Ventilkörper betätigen und relativ zum Ventillager verschieben kann. Der Ventilkörper ist vorzugsweise derart dimensioniert, dass er nach seinem Einsetzen in das Ventillager bereits in der Absperrposition derart an dem wenigstens einem federelastischen Bereich des Ventillagers angreift, dass dieser vorgespannt ist und eine Druckkraft in Richtung der Absperrposition ausübt und den Ventilkörper in der Absperrposition hält.To open the flow channel, the valve body must be moved against the clamping force of the elastic region or the areas of the valve bearing. As soon as no force is exerted on the valve body to deflect out of the shut-off position, it is pressed back into the shut-off position by the elastic force of the elastic region or the regions. Such a deflection force is exerted on the valve body, for example by a component of a foaming device, when the pressure fluid container with the valve is mounted on the device. For this purpose, the flow channel of the valve bearing to the side of the device out, that is, to the outside of the pressure fluid container, open, so that the component of the valve body operate and move relative to the valve bearing. The valve body is preferably dimensioned such that, after its insertion into the valve bearing, it engages in the shut-off position on the at least one resilient region of the valve bearing such that it is biased and exerts a pressure force in the direction of the shut-off position and holds the valve body in the shut-off position.

Das Ventillager mit dem wenigstens einen federelastischen Bereich ist einstückig ausgebildet und dient zur beweglichen Lagerung des Ventilkörpers, zur Montage des Ventils in einem Druckmittelbehälter und zur Steuerung des Ventils zwischen einer geöffneten und einer geschlossenen Position. Das Ventil nach der vorliegenden Erfindung besteht daher ausschliesslich aus zwei Bauteilen, die durch das Ventillager und den Ventilkörper gegeben sind. Es werden keine zusätzlichen Federelemente oder Dichtelemente benötigt, um die unterschiedlichen Anforderungen an das Ventil zu erfüllen. Das Ventil nach der Erfindung kann daher kostengünstig produziert und einfach hergestellt werden.The valve bearing with the at least one resilient region is formed integrally and serves for the movable mounting of the valve body, for mounting the valve in a pressure medium container and for controlling the valve between an open and a closed position. The valve according to the present invention therefore consists exclusively of two components, which are given by the valve bearing and the valve body. There are no additional spring elements or sealing elements needed to meet the different requirements for the valve. The valve according to the invention can therefore be produced inexpensively and easily manufactured.

Bei einer Ausführungsform eines Ventils nach der Erfindung ist das Ventillager als hülsenförmiger Körper ausgebildet, durch den sich der Durchströmkanal erstreckt. Von einem Ende des hülsenförmigen Körpers steht der wenigstens eine federelastische Bereich zumindest abschnittsweise in Richtung der Hülsenachse hervorsteht. Am anderen Ende ist der hülsenförmige Körper zur Betätigung des Ventilkörpers zugänglich, wie vorher beschrieben.In one embodiment of a valve according to the invention, the valve bearing is formed as a sleeve-shaped body through which the flow passage extends. From one end of the sleeve-shaped body, the at least one elastic region projects at least in sections in the direction of the sleeve axis. At the other end, the sleeve-shaped body is accessible for actuation of the valve body, as previously described.

So kann z.B. eine Anschlusseinrichtung zum Anschliessen des Druckmittelbehälters an eine Vorrichtung, z.B. ein Rohrstück der Anschlusseinrichtung, in den hülsenförmigen Körper eingeführt werden und eine Schubkraft auf den Ventilkörper ausüben, um das Ventil zu öffnen. Die Schubkraft wirkt entgegen der Spannkraft des federelastischen Bereichs. Da der wenigstens eine federelastische Bereich in den Durchströmkanal des Hülsenkörpers hervorsteht, kann er bei einer Verschiebung des Ventilkörpers entlang der Hülsenachse ausgelenkt werden. Gleichzeitig kann er dazu dienen den Ventilkörper im Ventillager zu halten. Dabei ist der Ventilkörper zwischen dem Engbereich des Ventillagers und dem hervorstehenden Abschnitt des federelastischen Bereichs oder der Bereiche gelagert und wird von der Druckkraft des federelastischen Bereichs, bzw. der Bereiche, in die Absperrposition gedrückt.Thus, for example, a connection device for connecting the pressure medium container to a device, for example a pipe section of the connection device, can be introduced into the sleeve-shaped body and exert a pushing force on the valve body in order to open the valve. The thrust force counteracts the resilience of the elastic region. Since the at least one elastic region protrudes into the throughflow channel of the sleeve body, it can be deflected along the sleeve axis when the valve body is displaced. At the same time, it can serve to hold the valve body in the valve bearing. In this case, the valve body between the narrow portion of the valve bearing and the protruding portion of the resilient portion or the areas is stored and is pressed by the pressure force of the elastic region, or the areas in the shut-off position.

Vorteilhaft sind mehrere federelastische Bereiche symmetrisch um den Umfang des Durchströmkanals des Ventillagers verteilt und die Abschnitte der federelastischen Bereiche, die zur Lagerachse hin vorstehen, greifen symmetrisch um den Umfang des Ventilkörpers an diesem an. Dadurch wird der Ventilkörper entlang der Achse des Durchströmkanals zentriert und zentral auf den Engbereich des Ventillagers ausgerichtet.Advantageously, a plurality of resilient areas are distributed symmetrically around the circumference of the flow passage of the valve bearing and the portions of the resilient areas projecting toward the bearing axis, symmetrically engage around the circumference of the valve body at this. As a result, the valve body is centered along the axis of the flow channel and aligned centrally on the constriction area of the valve bearing.

Bei einer vorteilhaften Ausführungsform des Ventils nach der Erfindung sind mehrere federelastische Bereiche in Form von Federzungen vorgesehen, die kranzförmig um den Umfang des Ventillagers angeordnet sind. Die Federzungen stehen z.B. in Längsrichtung von einem Ende eines Hülsenkörpers als Ventillager ab. Weiter weisen die Federzungen jeweils einen Stützabschnitt auf, der in Richtung der Lagerachse hervorsteht und an dem der Ventilkörper angreift. Der Ventilkörper wird somit ringsum an seiner Aussenfläche von den Stützabschnitten der Federzungen gehalten. Dabei wird er in zentraler Lage im Ventillager gehalten und kann in der Absperrposition gesichert werden. Auch bei Auslenkung des Ventilkörpers in die Durchlassposition greift eine Druckkraft der Federzungen gleichmässig um den Umfang des Ventilkörpers verteilt am Ventilkörper an. Damit kann ein Verkanten des Ventilkörpers, z.B. durch einseitig einwirkende Kräfte, verhindert werden.In an advantageous embodiment of the valve according to the invention, a plurality of elastic regions in the form of spring tongues are provided, which are arranged in a circle around the circumference of the valve bearing. The spring tongues are e.g. in the longitudinal direction of one end of a sleeve body as a valve store. Next, the spring tongues each have a support portion which protrudes in the direction of the bearing axis and on which engages the valve body. The valve body is thus held all around on its outer surface by the support portions of the spring tongues. It is held in a central position in the valve bearing and can be secured in the shut-off position. Even with deflection of the valve body in the passage position engages a compressive force of the spring tongues uniformly distributed around the circumference of the valve body on the valve body. Thus, tilting of the valve body, e.g. By unilaterally acting forces can be prevented.

Die beiden Bauteile des Ventils nach der Erfindung sind z.B. wie folgt vorgesehen: Das Ventillager weist einen Engbereich mit kleinem Durchmesser und daran anschliessend einen Lagerbereich mit grossem Durchmesser auf, der grösser ist als der Durchmesser des Engbereichs. Der Lagerbereich wird gegenüberliegend zum Engbereich durch die nach innen vorstehenden Abschnitte der federelastischen Bereiche, z.B. die Stützabschnitte, begrenzt. Der Ventilkörper ist vorzugsweise kegelförmig mit einem Kegelabschnitt ausgebildet und weist bereichsweise einen grösseren Durchmesser als der Engbereich des Ventillagers auf. Als kegelförmig soll eine sich konisch verjüngende Form verstanden werden. Der Ventilkörper kann auch die Form eines Doppelkegels aufweisen, der sich von einem dicken mittleren Abschnitt in beide axialen Richtungen konisch verjüngt. Vorzugsweise weist der Ventilkörper im Anschluss an ein dünneres Ende seines Kegelabschnitts einen Stiftabschnitt mit gleichbleibendem Durchmesser auf, der durch den Engbereich des Ventillagers ragen kann. Der Engbereich des Ventillagers kann somit als Führung zur Zentrierung des Ventilkörpers im Durchströmkanal dienen. Der Kegelabschnitt ist im Lagerbereich des Ventillagers gelagert und verschliesst den Engbereich in der Absperrposition. Der Durchmesser des Lagerbereichs des Ventillagers ist grösser als der Durchmesser des dicken Abschnitts des Kegelabschnitts. Sind Federzungen als federelastische Bereiche des Ventillagers vorgesehen, umgeben diese den Kegelabschnitt des Ventilkörpers und bilden den Lagerbereich des Ventillagers. Die vorstehenden Stützabschnitte der Federzungen hintergreifen dabei den dicken Kegelabschnitt des Ventilkörpers, so dass der sich zum Engbereich des Ventillagers hin verjüngende Kegelabschnitt vollständig im Lagerbereich des Ventillagers zu liegen kommen.The two components of the valve according to the invention are provided, for example, as follows: The valve bearing has a constriction area with a small diameter and then a storage area with a large diameter, which is larger than the diameter of the narrow area. The storage area is bounded opposite the narrow area by the inwardly projecting portions of the resilient areas, eg the support sections. The valve body is preferably formed cone-shaped with a conical portion and in some areas has a larger diameter than the narrow region of the valve bearing. As conical a conically tapered shape should be understood. The valve body may also be in the form of a double cone, which tapers conically from a thick central portion in both axial directions. Preferably, following a thinner end of its conical section, the valve body has a pin portion of constant diameter which can protrude through the narrow region of the valve bearing. The narrow region of the valve bearing can thus serve as a guide for centering the valve body in the flow-through. The cone section is mounted in the bearing area of the valve bearing and closes the narrow area in the shut-off position. The Diameter of the bearing area of the valve bearing is greater than the diameter of the thick portion of the cone section. If spring tongues are provided as spring-elastic areas of the valve bearing, these surround the conical section of the valve body and form the bearing area of the valve bearing. The protruding support sections of the spring tongues engage behind the thick conical section of the valve body, so that the conical section tapering towards the narrow region of the valve bearing comes to rest completely in the bearing area of the valve bearing.

In einer Variante des Ventillagers stehen die Stützabschnitte der Federzungen schräg zur Lagerachse hin hervor. Sie bilden dadurch gemeinsam eine sich konisch verjüngende Angriffsfläche und eine sich verengende Durchführung. Der Durchmesser der Durchführung ist kleiner als ein Durchmesser des Ventilkörpers. Bei einem kegelförmigen Ventilkörper ist der Durchmesser der Durchführung kleiner als der dickste Durchmesser des Kegelabschnitts. Wird eine Schubkraft in Richtung der Durchlassposition auf den Ventilkörper ausgeübt, wird der Ventilkörper vom Engbereich des Ventillagers weg und gegen die Schrägen der Stützabschnitte drückt, d.h. gegen die sich konisch verjüngende Angriffsfläche, und spreizt die Federzungen radial auseinander. Der Ventilkörper gleitet dabei in Längsrichtung entlang der Schrägen, die als Führung für den Ventilkörper dienen können. Von den Federzungen wirkt nun eine radiale Rückstellkraft auf den Ventilkörper, die durch die Schrägen in eine axiale Druckkraft auf den Ventilkörper umgesetzt wird.In a variant of the valve bearing, the support sections of the spring tongues project obliquely toward the bearing axis. Together they form a conically tapered attack surface and a narrowing passage. The diameter of the passage is smaller than a diameter of the valve body. In a conical valve body, the diameter of the passage is smaller than the thickest diameter of the cone portion. If a thrust force is exerted in the direction of the passage position on the valve body, the valve body is pushed away from the throat area of the valve bearing and against the slopes of the support portions, i. against the conically tapered attack surface, and spreads the spring tongues radially apart. The valve body slides in the longitudinal direction along the slopes, which can serve as a guide for the valve body. From the spring tongues now acts a radial restoring force on the valve body, which is converted by the bevels in an axial compressive force on the valve body.

In einer bevorzugten Variante eines Ventils nach der vorliegenden Erfindung weist der Ventilkörper einen Doppelkegelabschnitt mit einem ersten konischen Abschnitt und einem zweiten konischen Abschnitt auf, die sich von einem mittleren dicken Abschnitt zu den sich gegenüberliegenden Enden des Doppelkegelabschnitts hin verjüngen, wie oben beschrieben. Der Ventilkörper ist derart in dem Ventillager gelagert, dass der mittlere dicke Abschnitt zwischen einem Engbereich des Ventillagers und den nach innen stehenden Stützabschnitten der Federzungen gelagert ist. Dabei ragt der erste konische Abschnitt in Richtung des Engbereichs. In der Absperrposition ragt der erste konische Abschnitt soweit in den Engbereich hinein bis er dichtend am Umfang des Engbereichs zu liegen kommt. Der zweite konische Abschnitt ragt durch die Stützabschnitte, wobei diese auf dem zweiten konischen Abschnitt angreifen. Wird der Ventilkörper von der Absperrposition in die Durchlassposition geschoben, d. h. in Richtung des Druckmittelbehälters, rutschen die Stützabschnitte axial entlang der konischen Fläche des zweiten Kegelabschnitts und werden dadurch aufgespannt. Lässt die Vorschubkraft auf den Ventilkörper nach, pressen die federelastisch ausgelenkten Stützabschnitte gegen die konische Fläche und drücken den Ventilkörper in Richtung des Engbereichs bis er dichtend daran aufsitzt. Die konische Fläche des zweiten Kegelabschnitts dient dabei zur besseren Umwandlung der radial wirkenden Rückstellkraft der Federzungen in eine axial wirkende Druckkraft auf den Ventilkörper.In a preferred variant of a valve according to the present invention, the valve body has a double cone portion having a first conical portion and a second conical portion tapering from a central thick portion to the opposite ends of the double cone portion, as described above. The valve body is mounted in the valve bearing in such a way that the middle thick section is mounted between a constriction area of the valve bearing and the inwardly standing support sections of the spring tongues. The first conical section protrudes in the direction of the narrow area. In the shut-off position, the first conical section projects into the narrow area until it comes to lie sealingly on the circumference of the narrow area. The second conical section protrudes through the support sections, which engage on the second conical section. If the valve body is pushed from the shut-off position to the open position, ie in the direction of the pressure medium container, the support sections slide axially along the conical surface of the second cone portion and are thereby clamped. If the feed force leans on the valve body, the resiliently deflected support sections press against the conical surface and press the valve body in the direction of the narrow area until it sits sealingly against it. The conical surface of the second cone portion serves for better conversion of the radially acting restoring force of the spring tongues into an axially acting pressure force on the valve body.

Der Schubweg des Ventilkörpers, der z.B. durch eine Anschlusseinrichtung zum Anschliessen des Druckmittelbehälters an eine Vorrichtung erwirkt wird, ist dabei derart begrenzt, dass der Ventilkörper nicht aus dem Eingriff mit den federelastischen Bereichen des Ventillagers herausgedrückt wird. Das heisst, der dicke Kegelabschnitt wird nicht aus dem Lagerbereich des Ventillagers und über die Stützabschnitte in den Druckmittelbehälter hineingedrückt. Hierfür kann an einem Ende des Ventilkörpers, z.B. am Stiftabschnitt, der durch den Engbereich des Ventillagers ragt, ein Anschlag zwischen Ventilkörper und Ventillager vorgesehen werden, der ein Verschieben aus dem Eingriff mit den federelastischen Bereichen des Ventillagers blockiert. Es kann auch ein Anschlag zwischen Ventillager und Anschlusseinrichtung, die den Vorschub auslöst, vorgesehen werden, so dass die Anschlusseinrichtung durch das Ventillager gestoppt wird.The thrust stroke of the valve body, e.g. is achieved by a connection device for connecting the pressure medium container to a device is limited so that the valve body is not pushed out of engagement with the resilient regions of the valve bearing. That is, the thick cone portion is not pressed from the storage area of the valve bearing and the support portions in the pressure medium container. For this purpose, at one end of the valve body, e.g. at the pin portion, which projects through the narrow portion of the valve bearing, a stop between valve body and valve bearing are provided, which blocks a displacement out of engagement with the resilient regions of the valve bearing. It is also possible to provide a stop between the valve bearing and the connection device which triggers the feed, so that the connection device is stopped by the valve bearing.

Vorteilhaft verlaufen symmetrisch um den Umfang angeordnete federelastische Bereiche des Ventillagers zu ihren Enden hin schräg nach aussen. Beispielsweise verlaufen die Spitzen der Stützabschnitte der Federzungen schräg nach aussen. Die Enden, bzw. Spitzen, bilden damit eine Einführöffnung, deren Durchmesser grösser ist als ein Durchmesser des Ventilkörpers. Insbesondere kann der Durchmesser der Einführöffnung auch grösser als ein dicker Abschnitt eines kegelförmigen Ventilkörper, wie oben beschrieben, sein. Diese Einführöffnung erleichtert das Einsetzen des Ventilkörpers in das Ventillager bei der Montage des Ventils. Der Ventilkörper wird z.B. mit seinem Stiftabschnitt in die Einführöffnung eingeführt und eingeschoben, wobei die federelastischen Bereich durch die dicken Abschnitte des Ventilkörpers aufgebogen werden bis der Ventilkörper mit seinem dicken Abschnitt im Lagerbereich des Ventillagers zu liegen kommt. Hinter dem dicken Abschnitt schliessen sich die federelastischen Bereich geringfügig, so dass sie aber weiterhin am Ventilkörper angreifen und diesen nun in Richtung des Engbereichs des Ventillagers pressen.Advantageously extending symmetrically around the circumference arranged resilient portions of the valve bearing to their ends obliquely outward. For example, the tips of the support portions of the spring tongues extend obliquely outward. The ends, or tips, thus form an insertion opening whose diameter is greater than a diameter of the valve body. In particular, the diameter of the insertion opening may also be larger than a thick portion of a conical valve body, as described above. This insertion opening facilitates the insertion of the valve body in the valve bearing during assembly of the valve. The valve body is inserted and inserted, for example, with its pin portion in the insertion opening, wherein the resilient portion are bent by the thick portions of the valve body until the valve body comes to rest with its thick portion in the bearing area of the valve bearing. Behind the thick section, the elastic region close slightly, so that they continue to attack the valve body and now press it in the direction of the narrow portion of the valve bearing.

Das Ventillager kann wie oben beschrieben symmetrisch um den Umfang angeordnete federelastische Bereiche aufweisen, die mit schräg zur Lagerachse des Ventillagers verlaufenden Schrägflächen versehen sind. Diese Schrägflächen bilden eine Gleitfläche zum Abgleiten des Ventilkörpers. Wie dargelegt, werden die Schrägflächen z.B. durch sich konisch verjüngende Angriffsfläche der Federzungen gebildet, die eine Vorspannkraft der federelastischen Bereiche auf den Ventilkörper übertragen. Ausserdem können Schrägflächen als Gleitflächen beim Einführen des Ventilkörpers in den Lagerbereich des Ventillagers dienen und das Aufspreizen der federelastischen Bereiche erleichtern.The valve bearing can, as described above, have symmetrical circumferentially arranged resilient regions which are provided with inclined surfaces extending obliquely to the bearing axis of the valve bearing. These inclined surfaces form a sliding surface for sliding the valve body. As stated, the bevels are e.g. formed by conically tapered engagement surface of the spring tongues, which transmit a biasing force of the resilient regions on the valve body. In addition, inclined surfaces can serve as sliding surfaces during insertion of the valve body in the storage area of the valve bearing and facilitate the spreading of the resilient areas.

Ein Druckmittelbehälter nach der Erfindung ist mit einem oben beschriebenen Ventil ausgestattet. Das Ventil ist dabei in einem Halsabschnitt des Behälters angeordnet. Beispielsweise ist das Ventil durch einen Passsitz im Halsabschnitt befestigt. Der Passsitz kann beispielsweise zwischen einer Ringnut und einem Ringwulst zwischen Ventillager und Behälter erreicht werden. Vorteilhaft liegt das Ventillager dabei mit seinem Engbereich am Innenumfang des Druckmittelbehälters an. Ein Aussenbereich zum Einführen einer Anschlusseinrichtung kann sich nach ausserhalb des Behälters erstrecken. Vorzugsweise liegt der wenigstens eine federelastische Bereich, der sich an den Engbereich des Ventillagers anschliesst, innen am Behälter an und ein Endbereich des wenigstens einen federelastischen Bereichs ragt nach innen von einer Innenwand des Behälters ab. Insbesondere ragt der Abschnitt, der in Richtung der Lagerachse hervorsteht, wie etwa die Stützabschnitte, von der Innenwand des Behälters ab. Die federelastischen Bereiche stützen sich somit teilweise nach aussen gegen die Behälterinnenwand ab und werden von dem Ventilkörper im Endbereich aufgebogen. Dadurch wird die Rückstellkraft auf den Ventilkörper erhöht.A pressure medium container according to the invention is equipped with a valve described above. The valve is arranged in a neck portion of the container. For example, the valve is secured by a snug fit in the neck portion. The fit can be achieved for example between an annular groove and an annular bead between the valve bearing and container. Advantageously, the valve bearing abuts with its constriction on the inner circumference of the pressure medium container. An outer area for insertion of a connection device may extend to outside the container. Preferably, the at least one resilient region, which adjoins the narrow region of the valve bearing, lies on the inside of the container and an end region of the at least one elastic region protrudes inward from an inner wall of the container. In particular, the portion which protrudes in the direction of the bearing axis, such as the support portions, protrudes from the inner wall of the container. The elastic regions are thus partially supported outwards against the container inner wall and are bent up by the valve body in the end region. As a result, the restoring force is increased to the valve body.

Ein Ventil und ein Druckmittelbehälter nach der Erfindung können in einfacher Weise an eine Druckvorrichtung angeschlossen werden, da die federelastischen Bereiche das Ventil beim Anschliessen des Behälters zuverlässig öffnen. Auch kann der Behälter problemlos ausgetauscht werden, weil das Ventil durch die federelastischen Bereiche sicher wieder verschlossen wird, sobald es von der Druckvorrichtung abgenommen wird. Ferner kann das Ventil kostensparend hergestellt werden, da es ausschliesslich aus zwei Bauteilen besteht und ohne grossen Aufwand zusammengesetzt werden kann.A valve and a pressure medium container according to the invention can be easily connected to a printing device, since the elastic regions reliably open the valve when connecting the container. Also, the container can be easily replaced, because the valve is securely closed by the resilient areas again, as soon as it is removed from the printing device. Furthermore, the valve can be manufactured cost-saving, since it consists exclusively of two components and can be assembled without great effort.

Kurzbeschreibung der ZeichnungenBrief description of the drawings

Die Erfindung wurde an Hand mehrerer Ausführungsformen dargestellt. Die einzelnen technischen Merkmale einer Ausführungsform können durchaus auch in Kombination mit einer anderen Ausführungsform mit den dargelegten Vorteilen verwendet werden. Die Beschreibung der erfindungsgemässen technischen Merkmale ist daher nicht auf die jeweilige Ausführungsform beschränkt.The invention has been illustrated with reference to several embodiments. The individual technical features of an embodiment may well be used in combination with another embodiment with the stated advantages. The description of the technical features according to the invention is therefore not limited to the respective embodiment.

Eine vorteilhafte Ausführungsform der Erfindung wird im Folgenden anhand der Zeichnungen dargestellt, die lediglich zur Erläuterung dienen und nicht einschränkend auszulegen sind. Aus den Zeichnungen offenbar werdende Merkmale der Erfindung sollen als zur Offenbarung der Erfindung gehörend betrachtet werden. In den Zeichnungen zeigen:

Fig. 1
Längsschnitt durch ein Ventil in einem Druckmittelbehälter nach der Erfindung in einer Absperrposition,
Fig. 2
Längsschnitt durch das Ventil nach Figur 1 in einer Durchlassposition und
Fig. 3
dreidimensionale Ansicht eines Ventillagers für ein Ventil nach der vorliegenden Erfindung.
An advantageous embodiment of the invention is illustrated below with reference to the drawings, which are merely illustrative and not restrictive interpreted. Features of the invention which will become apparent from the drawings are to be considered as part of the disclosure of the invention. In the drawings show:
Fig. 1
Longitudinal section through a valve in a pressure medium container according to the invention in a shut-off position,
Fig. 2
Longitudinal section through the valve after FIG. 1 in a forward position and
Fig. 3
three-dimensional view of a valve bearing for a valve according to the present invention.

Detaillierte Beschreibung der bevorzugten AusführungsformDetailed Description of the Preferred Embodiment

In den Figuren 1 und 2 ist ein Ventil nach der vorliegenden Erfindung gezeigt, das in einen Halsabschnitt 1 eines Druckmittelbehälters 2 eingesetzt ist. In Figur 1 ist das Ventil in einer Absperrposition dargestellt, in der der Druckmittelbehälter 2 gelagert oder transportiert werden kann. In Figur 2 ist eine Anschlusseinrichtung 3 mit einem Rohrstück 4 und Druckmittelleitungen 5 auf das Ventil montiert, so dass das Rohrstück 4 auf das Ventil einwirkt und dieses in einer Durchlassposition vorliegt, in der ein Druckmittel in Ausströmrichtung S aus dem Druckmittelbehälter 2 durch das Ventil und die Druckmittelleitungen 5 entweichen kann.In the Figures 1 and 2 a valve according to the present invention is shown, which is inserted into a neck portion 1 of a pressure medium container 2. In FIG. 1 the valve is shown in a shut-off position in which the pressure medium container 2 can be stored or transported. In FIG. 2 is a connection device 3 with a pipe section 4 and pressure medium lines 5 mounted on the valve, so that the pipe section 4 acts on the valve and this is present in a passage position in which a pressure medium in the outflow S from the pressure medium container 2 through the valve and the pressure medium lines. 5 can escape.

Wie in Figur 1 ersichtlich, besteht das Ventil aus ausschliesslich zwei Bauteilen: einem Ventillager 6 und einem Ventilkörper 7. Das Ventillager 6 ist als hülsenförmiger Körper mit einem axial verlaufenden Durchgang als Durchströmkanal 25 ausgebildet und ist im Wesentlichen zylindersymmetrisch um eine Lagerachse A. Das Ventillager 6 weist einen Auslassbereich 8, einen Engbereich 9, einen Lagerbereich 10 und einen Einführbereich 11 auf. Der Engbereich 9 weist einen kleineren Durchmesser auf als der Lagerbereich 10 und wird von dem Ventilkörper 7 verschlossen. Der Auslassbereich 8 kann einen grösseren Durchmesser aufweisen als der Engbereich 9. Der Auslassbereich 8 dient als Einführbereich für das Rohrstück 4 zur Betätigung des Ventilkörpers 7. Entsprechend liegt der Einführbereich 11 in Ausströmrichtung S zuvorderst und der Auslassbereich zuhinterst.As in FIG. 1 can be seen, the valve consists of only two components: a valve bearing 6 and a valve body 7. The valve bearing 6 is as sleeve-shaped body having an axially extending passage formed as a flow passage 25 and is substantially cylindrically symmetric about a bearing axis A. The valve bearing 6 has an outlet 8, a narrowing area 9, a storage area 10 and an insertion area 11. The constriction area 9 has a smaller diameter than the storage area 10 and is closed by the valve body 7. The outlet region 8 can have a larger diameter than the narrow region 9. The outlet region 8 serves as an introduction region for the tube section 4 for actuating the valve body 7. Accordingly, the introduction region 11 is located in the outflow direction S first and the outlet region is behind it.

Das Ventillager 6 ist im Halsabschnitt 1 des Druckmittelbehälters 2 fest eingesetzt. Hierfür ist zwischen Halsabschnitt 1 und Aussenumfang des Ventillagers 6 ein Passsitz vorgesehen. Wie genauer aus Figur 3 ersichtlich ist, weist das Ventillager 6 hierfür beispielsweise eine umlaufende Ringnut 12 und einen Absatz 13 auf. Der Halsabschnitt 1 des Druckmittelbehälters 2 kann dabei einen korrespondierenden Ringwulst 14 aufweisen. Im Passsitz greift dann der Ringwulst 14 in die Ringnut 12 ein und der Absatz 13 sitzt auf dem Ende des Halsabschnitts 1 auf. Alternativ kann auch vorgesehen werden, dass der Halsabschnitt 1 des Druckmittelbehälters 2 radial über den Absatz 13 am Ventillager 6 hinübergezogen wird, so dass ein stabiler Passsitz entsteht. Das Ventillager 6 ist in diesem Passsitz gegen eine axiale und gegen eine radiale Verschiebung im Halsabschnitt 1 gesichert, insbesondere blockiert der Absatz 13 eine Verschiebung des Ventillagers 6 beim Aufdrücken einer Anschlusseinrichtung 3 auf das Ventil. Der Engbereich 9 liegt im Bereich des Ringwulsts 12. Der Auslassbereich 8 liegt ausserhalb des Druckmittelbehälters 2 und ist für das Aufsetzen der Anschlusseinrichtung 3 zugänglich. Der Lagerbereich 10 liegt innerhalb des Halsabschnitts 1. Der Einführabschnitt kann innerhalb des Halsabschnitts 1 liegen oder bereits in den sich aufweitenden Teil des Druckmittelbehälters ragen.The valve bearing 6 is firmly inserted in the neck portion 1 of the pressure medium container 2. For this purpose, a snug fit is provided between the neck portion 1 and outer circumference of the valve bearing 6. How more precise FIG. 3 it can be seen, the valve bearing 6 for this purpose, for example, a circumferential annular groove 12 and a shoulder 13. The neck portion 1 of the pressure medium container 2 may have a corresponding annular bead 14. When fitted, the annular bead 14 then engages in the annular groove 12 and the shoulder 13 rests on the end of the neck portion 1. Alternatively, it can also be provided that the neck portion 1 of the pressure medium container 2 is pulled radially over the shoulder 13 on the valve bearing 6, so that a stable fit is formed. The valve bearing 6 is secured in this snug fit against an axial and against a radial displacement in the neck portion 1, in particular blocks the paragraph 13 a displacement of the valve bearing 6 when pressing a connection device 3 on the valve. The narrow region 9 is located in the region of the annular bead 12. The outlet region 8 is located outside of the pressure medium container 2 and is accessible for placing the connection device 3. The storage area 10 is located within the neck portion 1. The insertion portion may be within the neck portion 1 or already protrude into the widening portion of the pressure medium container.

Erfindungsgemäss ist das Ventillager 6 mit mehreren federelastischen Bereichen in Form von Federzungen 15 ausgebildet. Die Federzungen 15 greifen am Ventilkörper 7 derart an, dass sie zumindest nach einer Bewegung des Ventilkörpers 7 von der Absperrposition in die Durchlassposition gespannt sind und eine rückstellende Druckkraft auf den Ventilkörper generieren, wie zu Figur 2 näher erläutert wird.According to the invention, the valve bearing 6 is formed with a plurality of elastic regions in the form of spring tongues 15. The spring tongues 15 engage the valve body 7 in such a way that, at least after a movement of the valve body 7, they are stretched from the shut-off position into the forward position and generate a restoring pressure force on the valve body, such as FIG. 2 is explained in more detail.

Die Federzungen 15 ragen in Längsrichtung von einem Ende des Ventillagers 6 ab, so dass sie in Richtung des Druckmittelbehälters 2 und entgegen der Ausströmrichtung S ausgerichtet sind. Es sind grundsätzlich mehrere Federzungen 15 symmetrisch um den Umfang des Ventillagers 6 verteilt vorgesehen. Bei der dargestellten Ausführungsform des Ventillagers sind sechs Federzungen 15 vorgesehen, wie in Figur 3 ersichtlich. Zwischen den Federzungen 15 verbleiben Zwischenräume 26, die in Längsrichtung verlaufende Schlitze im Ventillager 6 darstellen. Ein Abschnitt der Federzungen 15 steht als Stützabschnitt 16 in Richtung der Lagerachse A des Ventillagers 6 hervor. Die Federzungen 15 greifen mit ihren Stützabschnitten 16 am Ventilkörper 7 an.The spring tongues 15 protrude in the longitudinal direction from one end of the valve bearing 6, so that they are aligned in the direction of the pressure medium container 2 and counter to the outflow S direction. In principle, a plurality of spring tongues 15 are provided distributed symmetrically around the circumference of the valve bearing 6. In the illustrated embodiment of the valve bearing six spring tongues 15 are provided, as in FIG. 3 seen. Between the spring tongues 15 remain intermediate spaces 26, which constitute longitudinal slots in the valve bearing 6. A portion of the spring tongues 15 protrudes as a support portion 16 in the direction of the bearing axis A of the valve bearing 6. The spring tongues 15 engage with their support portions 16 on the valve body 7.

Die Federzungen 15 sind kranzförmig um den Umfang des Ventillagers 6 verteilt und schliessen zwischen sich den Lagerbereich 10 ein. Der Lagerbereich 10 erstreckt sich in Längsrichtung vom Engbereich 9 bis zu den Stützabschnitten 16.The spring tongues 15 are distributed in a circle around the circumference of the valve bearing 6 and enclose the bearing area 10 between them. The storage area 10 extends in the longitudinal direction from the narrow area 9 to the support sections 16.

Die Stützabschnitte 16 der Federzungen 15 stehen schräg zur Lagerachse hin nach innen hervor. Die sich daraus ergebenden Schrägen 17 der Stützabschnitte 16 bilden gemeinsam eine elastisch aufweitbare, konische Schrägfläche im Lagerbereich 10 des Ventillagers 6, die sich zum Ende des Lagerbereichs 10 hin verjüngt. Die Stützabschnitte 16 umschliessen ferner eine Durchführung 18, deren Durchmesser kleiner ist, als ein Durchmesser des Lagerbereichs 10 und ein Durchmesser des Ventilkörpers. Weiter verlaufen die Federzungen 15 zu ihren Enden hin schräg nach aussen und bilden eine Einführöffnung 19 zum Einführen des Ventilkörpers 7. Die sich daraus ergebenden Schrägen 20 am Ende der Federzungen 15 bilden gemeinsam eine elastisch aufweitbare, konische Schrägfläche im Einführbereich 11 des Ventillagers 6, die sich zum Ende des Ventillagers 6 hin aufweitet. Die Schrägen 17 und die Schrägen 20 bilden zwischen sich die Stützabschnitte 16. Der Durchmesser der Einführöffnung 19 zwischen den Enden des Ventillagers 6 ist grösser ist als ein Durchmesser des Ventilkörpers 7. Die Schrägflächen bilden Gleitflächen, entlang denen der Ventilkörper 7 gleiten kann, wenn er in das Ventillager 6 eingesetzt wird (Schrägen 20) oder wenn er von der Absperrposition in die Durchlassposition verschoben wird (Schrägen 17), wie bei Figur 2 näher erläutert wird.The support portions 16 of the spring tongues 15 project obliquely inwards towards the bearing axis. The resulting bevels 17 of the support portions 16 together form an elastically expandable, conical inclined surface in the storage area 10 of the valve bearing 6, which tapers towards the end of the storage area 10. The support portions 16 further enclose a passage 18 whose diameter is smaller than a diameter of the bearing portion 10 and a diameter of the valve body. The resulting tongues 20 at the end of the spring tongues 15 together form an elastically expandable, conical inclined surface in the insertion region 11 of the valve bearing 6, the widens towards the end of the valve bearing 6. The slopes 17 and the slopes 20 form between them the support portions 16. The diameter of the insertion opening 19 between the ends of the valve bearing 6 is greater than a diameter of the valve body 7. The inclined surfaces form sliding surfaces along which the valve body 7 can slide when he is inserted into the valve bearing 6 (bevels 20) or when it is moved from the shut-off position to the forward position (bevels 17), as in FIG. 2 is explained in more detail.

Der Ventilkörper 7 ist kegelförmig mit einem Kegelabschnitt und einem Stiftabschnitt 21 ausgebildet. In der gezeigten Ausführungsform ist der Kegelabschnitt als Doppelkegelabschnitt ausgebildet. Der Kegelabschnitt umfasst einen ersten konischen Abschnitt 22 und einen zweiten konischen Abschnitt 23, die sich von einem mittleren dicken Abschnitt 24 zu den Enden des Doppelkegelabschnitts hin verjüngen. Der Kegelabschnitt weist im Bereich des dicken Abschnitts 24 einen grösseren Durchmesser als der Engbereich auf. Der Kegelabschnitt ist im Wesentlichen im Lagerbereich 10 des Ventillagers 6 gelagert, wobei der erste konische Abschnitt 22 in den Engbereich 9 hineinragt und an diesem ringsum anliegen kann, so dass er den Engbereich 9 in der Absperrposition verschliesst und den Durchströmkanal 25 durch das Ventillager 6 verschliesst. Der mittlere dicke Abschnitt 24 kommt zwischen dem Engbereich 9 und den Stützabschnitten 16 der Federzungen 15 zu liegen. Der zweite konische Abschnitt 23 ragt durch die Stützabschnitte 16, wobei die Stützabschnitte 16 an der Fläche des Abschnitts 23 anliegen. In der Absperrposition sind die Federzungen 15 leicht gespannt, so dass sie eine radiale Kraft auf den Ventilkörper 7 ausüben, die durch die konische Verjüngung des Abschnitts 23 in eine axiale Kraft in Richtung der Ausströmrichtung S umgesetzt wird.The valve body 7 is conically formed with a cone portion and a pin portion 21. In the embodiment shown, the cone portion is formed as a double cone section. The cone section comprises a first conical portion 22 and a second conical portion 23 tapering from a middle thick portion 24 toward the ends of the double cone portion. The conical section has a larger diameter in the region of the thick section 24 than the narrow section. The conical section is essentially mounted in the bearing area 10 of the valve bearing 6, wherein the first conical section 22 projects into the constricting area 9 and can abut it all around, so that it closes the narrow area 9 in the shut-off position and closes the flow-through channel 25 through the valve bearing 6 , The middle thick portion 24 comes to lie between the narrow portion 9 and the support portions 16 of the spring tongues 15. The second conical section 23 protrudes through the support sections 16, wherein the support sections 16 rest against the surface of the section 23. In the shut-off position, the spring tongues 15 are slightly tensioned, so that they exert a radial force on the valve body 7, which is converted by the conical taper of the portion 23 in an axial force in the direction of the outflow direction S.

Zur Montage des Ventilkörpers 7 im Ventillager 6 kann der Ventilkörper 7 mit dem Stiftabschnitt 21 durch die Einführöffnung 19 und die Durchführung 16 in das Ventillager 6 eingeschoben werden. Dabei kommen die Stützabschnitte 16 an der ersten konischen Fläche 22 des Kegelabschnitts zu liegen und werden durch diese beim Einschieben aufgeweitet. Sobald der mittlere dicke Bereich 24 des Kegelabschnitts an den Stützabschnitten 16 vorbei geschoben ist, verengen sich die Federzungen 15 wieder und nehmen den Ventilkörper sicher im Lagerbereich 10 auf, wobei die Stützabschnitte 16 an der zweiten konischen Fläche 23 des Kegelabschnitts zu liegen kommen und den Ventilkörper in die Absperrposition gegen den Engbereich 9 des Ventillagers 6 pressen.For mounting the valve body 7 in the valve bearing 6, the valve body 7 can be inserted with the pin portion 21 through the insertion opening 19 and the passage 16 in the valve bearing 6. The support portions 16 come to lie on the first conical surface 22 of the cone portion and are widened by this during insertion. As soon as the central thick region 24 of the conical section is pushed past the support sections 16, the spring tongues 15 narrow again and securely receive the valve body in the bearing region 10, the support sections 16 coming to rest on the second conical surface 23 of the conical section and the valve body in the shut-off position against the constriction area 9 of the valve bearing 6 press.

Alternativ könnte der Ventilkörper 7 auch als einfacher Kegel ausgebildet sein. In diesem Fall bildet der dicke Kegelabschnitt eine Endkante des Ventilkörpers, die an den Schrägen 17 der Federzungen 15 anliegt. Die Stützabschnitte 16 laufen hinter dem Kegelabschnitt zusammen, so dass der Ventilkörper nicht hindurch ragt. Eine radiale Spannkraft der Federzungen 15 wird über die Schrägen 17 auf die Endkante des Ventilkörpers übertragen und in eine axiale Druckkraft in Richtung des Engbereichs 9 umgewandelt.Alternatively, the valve body 7 could also be designed as a simple cone. In this case, the thick cone portion forms an end edge of the valve body, which bears against the bevels 17 of the spring tongues 15. The support portions 16 converge behind the cone portion so that the valve body does not protrude. A radial clamping force of the spring tongues 15 is transmitted via the bevels 17 to the end edge of the valve body and converted into an axial compressive force in the direction of the narrow region 9.

In Figur 2 ist das Ventil in einer Durchlassposition gezeigt. Der Ventilkörper 7 wurde von dem Rohrstück 4 der Anschlusseinrichtung 3 von der Absperrposition in Durchlassposition axial entgegen der Ausströmrichtung S vorgeschoben. Dabei greift das Rohrstück 4, das fest in der Anschlusseinrichtung 3 sitzt, am Ende des Ventilkörpers 7, das in den Auslassbereich 8 hervorsteht, an und verschiebt den Ventilkörper 7 soweit, bis die Anschlusseinrichtung 3 am Ende des Ventillagers 6 anschlägt und ein weiteres Vorschieben blockiert ist. Die Anschlusseinrichtung 3 wird in der Durchlassposition in herkömmlicher Weise am Druckmittelbehälter oder am Ventil befestigt.In FIG. 2 the valve is shown in a passage position. The valve body 7 was from the pipe section 4 of the connecting device 3 from the shut-off position in the passage position axially against the outflow S advanced. In this case, the pipe section 4, which sits firmly in the connection device 3, engages the end of the valve body 7, which protrudes into the outlet 8, and moves the valve body 7 until the connection device 3 abuts the end of the valve bearing 6 and blocks further advancement is. The connection device 3 is fastened in the passage position in a conventional manner on the pressure medium container or on the valve.

Beim Verschieben wird der erste konische Abschnitt 22 des Ventilkörpers vom Engbereich 9 entfernt und gibt den Durchströmkanal 25 frei. Das Druckmittel kann nun aus dem Druckmittelbehälter 2 durch die Zwischenräume 26 zwischen den Federzungen 15 in den Durchströmkanal 25 eindringen und zwischen Aussenfläche des Ventilkörpers 7 und Innenfläche des Engbereichs 9 hindurch in den Auslassbereich 8 des Ventillagers 6 und in die Druckmittelleitung 5 der Anschlusseinrichtung 3 strömen. Der zweite konische Abschnitt 23 des Ventilkörpers 7 gleitet beim Verschieben entlang der Stützabschnitte 16 der Federzungen 15 und drückt diese radial auseinander, so dass die Federzungen 15 weiter gespannt werden. Daraus resultiert die Druckkraft, die den Ventilkörper 7 zurück in die Absperrposition zu drücken sucht. Der Halsabschnitt 1 des Druckmittelbehälters 2 kann ausserdem beim Aufspreizen der Federzungen 15 eine Gegenfläche bilden, die einem Ausweichen der Federzungen 15 entgegensteht. Dadurch kann die rückstellende Druckkraft, die von den Federzungen 15 ausgeht, erhöht werden.When moving the first conical portion 22 of the valve body is removed from the narrow portion 9 and gives the flow channel 25 free. The pressure medium can now penetrate from the pressure medium container 2 through the intermediate spaces 26 between the spring tongues 15 in the flow passage 25 and between the outer surface of the valve body 7 and inner surface of the constriction 9 through into the outlet 8 of the valve bearing 6 and into the pressure medium line 5 of the connection device 3. The second conical portion 23 of the valve body 7 slides during displacement along the support portions 16 of the spring tongues 15 and pushes them apart radially, so that the spring tongues 15 are further tensioned. This results in the compressive force that seeks to push the valve body 7 back into the shut-off position. The neck portion 1 of the pressure medium container 2 can also form a counter surface during spreading of the spring tongues 15, which counteracts a deflection of the spring tongues 15. As a result, the restoring compressive force emanating from the spring tongues 15 can be increased.

Bei dem erfindungsgemässen Ventil sind die Federzungen 15 des Ventillagers vorteilhaft sowohl in einer Durchlassposition als auch in einer Absperrposition vorgespannt. Es ist somit sichergestellt, dass das Ventil geschlossen bleibt, wenn der Ventilkörper 7 nicht ausgelenkt wird. Auch in der Durchlassposition ist der Ventilkörper 7 innerhalb des Ventillagers 6 nicht soweit verschoben, dass die Stützabschnitte 16 über den dicken Abschnitt 24 des Ventilkörpers 7 rutschen würden. Der Ventilkörper bleibt deshalb sicher im Ventillager gehalten.In the valve according to the invention, the spring tongues 15 of the valve bearing are advantageously biased both in a passage position and in a shut-off position. It is thus ensured that the valve remains closed when the valve body 7 is not deflected. Also in the passage position of the valve body 7 is not shifted within the valve bearing 6 so far that the support portions 16 would slip over the thick portion 24 of the valve body 7. The valve body therefore remains securely held in the valve bearing.

Soll der Druckmittelbehälter 2 von der Anschlusseinrichtung 3 abgenommen werden, z. B. weil der Behälter leer ist oder aus Sicherheitsgründen, wird die Befestigung der Anschlusseinrichtung gelöst und das Rohrstück 4 beim Abnehmen der Anschlusseinrichtung vom Ventilkörper 7 entfernt. Es wirkt daher keine Auslenkkraft mehr auf den Ventilkörper 7, so dass dieser durch die Druckkraft der Federzungen 15 zurück in die Absperrposition verschoben werden kann. Dabei drücken die Stützabschnitte 16 radial gegen den zweiten konischen Abschnitt 23 und pressen den ersten konischen Abschnitt 22 in Richtung des Engbereichs 9 des Ventillagers 6 bis der Kegelabschnitt den Engbereich dicht verschliesst. Bezugszeichen 1 Halsabschnitt 15 Federzungen 2 Druckmittelbehälter 16 Stützabschnitt 3 Anschlusseinrichtung 17 Schräge 4 Rohrstück 18 Durchführung 5 Druckmittelleitung 19 Einführöffnung 6 Ventillager 20 Schräge 7 Ventilkörper 21 Stiftabschnitt 8 Auslassbereich 22 erster konischer Abschnitt 9 Engbereich 23 zweiter konischer Abschitt 10 Lagerbereich 24 dicker Abschnitt 11 Einführbereich 25 Durchströmkanal 12 Ringnut 13 Absatz A Lagerachse 14 Ringwulst S Ausströmrichtung If the pressure fluid tank 2 are removed from the connection device 3, z. B. because the container is empty or for safety reasons, the attachment of the connection device is released and the pipe section 4 removed when removing the connection device from the valve body 7. Therefore, there is no deflection force acting on the valve body 7, so that they are displaced by the pressure force of the spring tongues 15 back into the shut-off position can. The support sections 16 press radially against the second conical section 23 and press the first conical section 22 in the direction of the narrow region 9 of the valve bearing 6 until the conical section tightly closes the narrow area. <B> reference numerals </ b> 1 neck section 15 spring tongues 2 Pressure fluid reservoir 16 support section 3 connecting device 17 slope 4 pipe section 18 execution 5 Pressure medium line 19 insertion 6 valve bearings 20 slope 7 valve body 21 pin section 8th outlet 22 first conical section 9 narrow region 23 second conical section 10 storage area 24 thick section 11 insertion 25 flow-through 12 ring groove 13 paragraph A bearing axle 14 torus S outflow

Claims (13)

  1. Valve for a pressurized medium container (2), consisting exclusively of a valve bearing (6) with a flow-through channel (25) and a valve body (7) borne in a movable way in the flow-through channel, whereby the valve body (7) is movable against a pressure force from a blocked position, in which the flow-through channel (25) is blocked, into a passing position, in which the flow-through channel (25) is opened, and whereby the valve bearing (6) is designed with at least one resilient region (15), which acts on the valve body (7) in such a way that at least after a movement of the valve body (7) into the passing position the at least one resilient region (15) is stretched or tensioned and a restoring pressure force on the valve body (7) is generated.
  2. Valve according to claim 1, characterized in that the valve bearing (6) is designed as sleeve-shaped body, through which the flow-through channel (25) extends and from whose one end the at least one resilient region (15) protrudes at least section-wise in the direction of a bearing axis (A) of the valve bearing (6).
  3. Valve according to claim 1 or 2, characterized in that a plurality of resilient regions (15) are distributed symmetrically about the circumference of the flow-through channel (25) of the valve bearing (6), and sections (16) of the resilient regions (15) protruding toward the bearing axis (A) symmetrically about the circumference of the valve body (7) act upon the latter.
  4. Valve according to one of the preceding claims, characterized in that a plurality of resilient regions in the form of resilient tongues (15) are disposed annularly about the circumference of the valve bearing (6) and, with a support section (16), which acts upon the valve body (7), protrude in the direction of a bearing axis (A) of the valve bearing (6).
  5. Valve according to one of the preceding claims, characterized in that the valve bearing (6) has a narrow region (9) of small diameter and adjacent thereto a bearing area (10) of large diameter and the valve body (7) is designed conical with a cone section (24), which has regionally a greater diameter than the narrow region (9), whereby the cone section is borne in the bearing area (10) and closes off the narrow region (9) in the blocked position.
  6. Valve according to one of the claims 4 or 5, characterized in that the annularly disposed resilient tongues (15) form a bearing area (10) of the valve bearing (6) and surround the valve body (7).
  7. Valve according to one of the preceding claims, characterized in that resilient regions (15) of the valve bearing (6) disposed symmetrically about the circumference have a section (16) which protrudes obliquely toward the bearing axis (A), whereby the sections (16) form together a through passage (18) whose diameter is lesser than a diameter of the valve body (7).
  8. Valve according to one of the preceding claims, characterized in that resilient regions (15) of the valve bearing (6) disposed symmetrically about the circumference run obliquely outwards towards their ends and form an inlet opening (19) whose diameter is greater than a diameter of the valve body (7).
  9. Valve according to one of the preceding claims, characterized in that resilient regions (15) of the valve bearing (6) disposed symmetrically about the circumference have inclined surfaces (17; 20) running obliquely to the bearing axis (A) of the valve bearing (6), which form a sliding surface for sliding of the valve body (7).
  10. Valve according to one of the preceding claims, characterized in that the valve body (7) has a bicone section with a first conical section (22) and a second conical section (23), which taper from a central wide section (24) to the ends of the bicone section, whereby the valve body (7) is borne in the valve bearing (6) in such a way that the central wide section (24) is borne between a narrow region (9) of the valve bearing (6) and inwardly projecting sections (16) of resilient regions (15) of the valve bearing (6).
  11. Pressurized medium container with a valve according to the features according to one of the claims 1 to 10.
  12. Pressurized medium container according to claim 11, characterized in that the container (2) has a neck section (1), in which the valve is disposed, whereby a section (16) of the at least one resilient region (15) of the valve bearing (6) protrudes inwardly from an inner wall of the container (2).
  13. Pressurized medium container according to claim 11 or 12, characterized in that the valve is held in a neck section (1) by a snug fit between an annular groove (12) and an annular bulge (14) between valve bearing (6) and container.
EP17164450.3A 2016-04-07 2017-04-01 Valve for a pressure medium tank Active EP3228561B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00449/16A CH712324A1 (en) 2016-04-07 2016-04-07 Valve for pressure fluid tank.

Publications (2)

Publication Number Publication Date
EP3228561A1 EP3228561A1 (en) 2017-10-11
EP3228561B1 true EP3228561B1 (en) 2019-07-24

Family

ID=57120964

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17164450.3A Active EP3228561B1 (en) 2016-04-07 2017-04-01 Valve for a pressure medium tank

Country Status (2)

Country Link
EP (1) EP3228561B1 (en)
CH (1) CH712324A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005039999A1 (en) * 2003-10-21 2005-05-06 Hartung Kunststoffwerk- Werkzeugbau Gmbh Device for sealing the opening of a container

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE502005003985D1 (en) * 2004-03-12 2008-06-19 Hengst Gmbh & Co Kg PNEUMATIC PRESSURE CONTROL VALVE
EP2255886B1 (en) 2009-05-29 2012-04-18 Mercedes Sánchez Cubero Device for foaming and dispensing liquids
DE102013014788A1 (en) * 2013-09-09 2015-03-12 Gábor Fazekas Solid valve

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005039999A1 (en) * 2003-10-21 2005-05-06 Hartung Kunststoffwerk- Werkzeugbau Gmbh Device for sealing the opening of a container

Also Published As

Publication number Publication date
EP3228561A1 (en) 2017-10-11
CH712324A1 (en) 2017-10-13

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