EP1000871B1 - Venting valve - Google Patents
Venting valve Download PDFInfo
- Publication number
- EP1000871B1 EP1000871B1 EP99121963A EP99121963A EP1000871B1 EP 1000871 B1 EP1000871 B1 EP 1000871B1 EP 99121963 A EP99121963 A EP 99121963A EP 99121963 A EP99121963 A EP 99121963A EP 1000871 B1 EP1000871 B1 EP 1000871B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve sleeve
- foam plug
- foam
- valve
- gas release
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- 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
- B65D51/00—Closures not otherwise provided for
- B65D51/16—Closures not otherwise provided for with means for venting air or gas
- B65D51/1605—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior
- B65D51/1616—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior by means of a filter
Definitions
- the invention relates to a degassing and gassing valve in Closure for containers, in particular for dangerous liquids in which after the container interior more open Valve sleeve is a closed-cell foam plug is pressed in with pretension.
- the degassing effect must be very low Use pressures below 0.01 MPa (0.1 bar) to excessive Avoid inflating the container.
- 0.01 MPa 0.1 bar
- the degassing effect begins by design only above 0.01 MPa (0.1 bar).
- Another criterion is the absolute liquid tightness of the degassing valve system even when filled and on containers upside down over a period of at least 5 minutes, which is also the case with many degassing systems is not yet guaranteed.
- the object of the invention is to achieve a complete Liquid tightness of such a degassing valve, even when a filled container is upside down as well with surge loads while maintaining the Continuity for those separated from the transport liquid Compared to gas even at very low overpressure the atmosphere from 0.002 to 0.004 MPa (0.02 to 0.04 bar).
- degassing valves in container closures such as those in document DE 91 12 190 U known per se. They consist of a fine-pored stopper, which the under Gaseous gas passes and a surge protection cap.
- the closure top has (1) of the closure as an opening (2) Gas outlet opening on the inside one below open valve sleeve (3).
- this valve sleeve is with Preload a cylindrical closed-pore Foam plug (4) pressed in.
- a circumferential bead on the inside of the valve sleeve (5) additionally prevents this foam plug from falling out.
- the filled transport container is in an inclined position brought or put upside down, so forms the labyrinth effect between cut cells or pores and Effective slowdown inside the valve sleeve of liquid passage (permeation).
- the effectiveness the labyrinth depends on the preload and quality of the foam plug.
- valve has compared to most of the market Systems also have the advantage that gas does not only come from escape the container into the open air, but also air penetrate through the valve into the interior of the container can. This fact means that even with transports the filled container under very different pressure conditions, e.g. over high mountains, on a plane or at Permeation of solvents through the container wall, there can never be a vacuum in the container, the dents the container walls and thus a reduction the stack compressive strength of the container could.
- the embodiment 2 ( Figures 2 and 3) is in terms the operation with the embodiment 1 almost identical. It is only here for the sake of an additional one Safety device to prevent liquid drops from escaping after extreme fluid shocks that e.g. if a container falls onto the closure, a cup-shaped over the outside of the valve sleeve (3) Cap (6), preferably made of PE, which has a slot (11) in its bottom. This Cap (6) preferably has on its inner wall above the inner bead (7) Sealing lips (9) facing the outer wall of the valve sleeve (3) seal.
- the purpose of this cap (6) is to on the one hand, in the case of extreme liquid impacts, the kinetic Energy of the filling material that is directly on without a cap would reduce the foam plug (4). On the other hand, it has the task of the foam stopper (4) to give an even preload and thus support the so-called memory effect. The foam stopper (4) thus remains over one long term stable and functional.
- the embodiment 3 (Fig. 4) is in its mode of operation almost identical to the embodiment 2.
- a slot (13) provided bulging in the bottom towards the foam plug (4)
- Push-in cap (12) behind the foam stopper pre-tensioned into the valve sleeve (3), until its collar (14) on the lower edge of the valve sleeve (3) is present.
- the domed bottom of this push-in cap (12) is preloaded on the foam plug (4) to keep its shape over a long period of time to ensure.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
- Feeding And Controlling Fuel (AREA)
Description
Die Erfindung betrifft ein Ent- und Begasungsventil im Verschluß für Behälter insbesondere für gefährliche Flüssigkeiten in dessen nach dem Behälterinnenraum offener Ventilhülse ein geschlossen-poriger Schaumstoff-Stopfen mit Vorspannung eingedrückt ist.The invention relates to a degassing and gassing valve in Closure for containers, in particular for dangerous liquids in which after the container interior more open Valve sleeve is a closed-cell foam plug is pressed in with pretension.
Bei der Befüllung von Transportbehältern wie Flaschen, Kanistern, Fässern oder größeren Behältern mit gasenden Flüssigkeiten, insbesondere anorganischen und organischen Peroxiden, müssen diese mit einer vorzugsweise im Verschluß der Behälter sitzenden DruckentlastungsEinrichtung in Form eines Entgasungsventiles versehen sein, um ein Aufblähen und Bersten der Behälter zu vermeiden.When filling transport containers such as bottles, Canisters, drums or larger containers with gas Liquids, especially inorganic and organic Peroxides, these must be mixed with a preferably in Closure of the container seated pressure relief device provided in the form of a degassing valve to prevent the containers from inflating and bursting.
Derartige Entgasungsventile in Behälterverschlüssen wie Schraubkappen oder Spuntstopfen sind an sich bekannt. Viele dieser Systeme vermögen jedoch nicht, nachfolgende 2 Hauptbedingungen für einen sicheren Transport und Lagerung gleichzeitig zu erfüllen.Such degassing valves in container closures such as Screw caps or spunt plugs are known per se. However, many of these systems are not capable of the following 2 main conditions for safe transport and To fulfill storage at the same time.
Vor allem bei dünnwandigen Behältern aus Kunststoff muß die Entgasungswirkung bereits bei sehr geringen Drücken unter 0,01 MPa (0,1 bar) einsetzen, um ein übermäßiges Aufblähen der Behälter zu vermeiden. Bei den bekannten Entgasungsventil-Systemen mittels Silikonpilz oder Kugelventil beginnt die Entgasungswirkung konstruktionsbedingt erst oberhalb 0,01 MPa (0,1 bar).Especially with thin-walled plastic containers the degassing effect must be very low Use pressures below 0.01 MPa (0.1 bar) to excessive Avoid inflating the container. With the known Degassing valve systems using silicone mushroom or ball valve the degassing effect begins by design only above 0.01 MPa (0.1 bar).
Weiteres Kriterium ist die absolute Flüssigkeitsdichtigkeit des Entgasungsventil-Systems auch bei gefüllten und auf den Kopf gestellten Behältern über einen Zeitraum von mindestens 5 Minuten, welches auch von vielen Entgasungs-Systemen bisher nicht gewährleistet wird.Another criterion is the absolute liquid tightness of the degassing valve system even when filled and on containers upside down over a period of at least 5 minutes, which is also the case with many degassing systems is not yet guaranteed.
Aufgabe der Erfindung ist die Erzielung einer vollständigen Flüssigkeits-Dichtigkeit eines solchen Entgasungsventils, selbst bei Überkopfstehen eines gefüllten Behälters sowie bei Schwallbelastungen unter Aufrechterhaltung der Durchgängigkeit für von der Transportflüssigkeit abgespaltenem Gas bereits bei sehr geringem Überdruck gegenüber der Atmosphäre von 0,002 bis 0,004 MPa (0,02 bis 0,04 bar). The object of the invention is to achieve a complete Liquid tightness of such a degassing valve, even when a filled container is upside down as well with surge loads while maintaining the Continuity for those separated from the transport liquid Compared to gas even at very low overpressure the atmosphere from 0.002 to 0.004 MPa (0.02 to 0.04 bar).
Ferner sind Entgasungsventile in Behälterverschlüssen wie die vom Dokument DE 91 12 190 U an sich bekannt. Sie bestehen aus einem feinporigen Stopfen, welcher das unter Überdruck stehende Gas durchlässt, und einer Schwallschutzkappe. There are also degassing valves in container closures such as those in document DE 91 12 190 U known per se. They consist of a fine-pored stopper, which the under Gaseous gas passes and a surge protection cap.
Die Lösung der Aufgabe ergibt sich aus den Ansprüchen.The solution to the problem arises from the claims.
Ein Ausführungsbeispiel der Erfindung wird im folgenden anhand der Zeichnungen näher erläutert.An embodiment of the invention is as follows explained in more detail with reference to the drawings.
Diese zeigen in
Figur 1- einen Axialschnitt durch ein erfindungsgemäßes Entgasungsventil mit in die Innenseite der Ventilhülse eingedrücktem Schaumstoff-Stopfen
Figur 2- einen Axialschnitt durch ein erfindungsgemäßes Entgasungsventil mit in die Ventilhülse eingedrücktem Schaumstoff-Stopfen und darunterliegendem Schwallschutzkäppchen mit Schlitz
Figur 3- eine Draufsicht auf die Unterseite des gleichen
Ventils wie zu
Figur 2. Figur 4- einen Axialschnitt durch ein erfindungsgemäßes Entgasungsventil mit in die Ventilhülse eingedrücktem Schaumstoff-Stopfen und darunter in die Ventilhülse eingedrücktem, den Schaumstoff-Stopfen stützenden, geschlitztem Eindrückkäppchen.
- Figure 1
- an axial section through a degassing valve according to the invention with foam plug pressed into the inside of the valve sleeve
- Figure 2
- an axial section through a degassing valve according to the invention with a foam plug pressed into the valve sleeve and a surge protection cap with a slot underneath
- Figure 3
- a plan view of the underside of the same valve as for Figure 2.
- Figure 4
- an axial section through a degassing valve according to the invention with foam stopper pressed into the valve sleeve and underneath, slotted push-in cap pressed into the valve sleeve and supporting the foam stopper.
Bei Ausführungsbeispiel 1 (Figur 1) weist der Verschluß-Oberboden (1) des Verschlusses eine Öffnung (2) als Gasaustrittsöffnung auf, die in den Innenraum einer unten offenen Ventilhülse (3) führt. In dieser Ventilhülse ist mit Vorspannung ein zylindrischer geschlossenporiger Schaumstoff-Stopfen (4) eingepreßt.In embodiment 1 (Figure 1), the closure top has (1) of the closure as an opening (2) Gas outlet opening on the inside one below open valve sleeve (3). In this valve sleeve is with Preload a cylindrical closed-pore Foam plug (4) pressed in.
Ein umlaufender Wulst an der Innenseite der Ventilhülse (5) verhindert zusätzlich ein Herausfallen dieses Schaumstoff-Stopfens.A circumferential bead on the inside of the valve sleeve (5) additionally prevents this foam plug from falling out.
Bereits bei sehr geringem Überdruck im Behälter ab 0,002 MPa bis 0,004 MPa (0,02 bis 0,04 bar) tritt das entstehende Gas zwischen der Innenwandung der Ventilhülse (3) und den aufgeschnittenen Zellen am Rand des an der Innenseite der Ventilhülse anliegenden Schaumkörpers (4) hindurch. Hierbei kann je nach Größe der Poren oder Zellen oder der Länge des Schaumstopfens (4) oder dessen Durchmesser und Verdichtung der Gasdurchlaß in einem sehr weiten Bereich reproduzierbar eingestellt werden.Even with very low overpressure in the container from 0.002 MPa up to 0.004 MPa (0.02 to 0.04 bar) occurs Gas between the inner wall the valve sleeve (3) and the cut open Cells on the edge of the on the inside of the valve sleeve Foam body (4) through. Here, each according to the size of the pores or cells or the length of the Foam plug (4) or its diameter and compression the gas passage in a very wide range can be set reproducibly.
Wird der gefüllte Transportbehälter in eine Schräglage gebracht oder über Kopf gestellt, so bildet die Labyrinthwirkung zwischen aufgeschnittenen Zellen oder Poren und Innsenseite der Ventilhülse eine wirksame Verlangsamung des Flüssigkeitsdurchtritts (Permeation). Die Wirksamkeit des Labyrinths ist dabei abhängig von der Vorspannung und Qualität des Schaumstoffstopfens.The filled transport container is in an inclined position brought or put upside down, so forms the labyrinth effect between cut cells or pores and Effective slowdown inside the valve sleeve of liquid passage (permeation). The effectiveness the labyrinth depends on the preload and quality of the foam plug.
Vorerwähntes Ventil hat gegenüber den meisten marktüblichen Systemen ferner den Vorteil, daß Gas nicht nur aus dem Behälter ins Freie entweichen, sondern ebenfalls Luft durch das Ventil in den Behälterinnenraum eindringen kann. Diese Tatsache bewirkt, daß auch bei Transporten des gefüllten Behälters bei stark unterschiedlichen Druckverhältnissen, z.B. über hohe Berge, im Flugzeug oder bei Permeation von Lösemitteln durch die Behälterwandung, nie ein Unterdruck im Behälter entstehen kann, der Einbeulungen der Behälterwände und damit eine Verminderung der Stapelstauchdruckfestigkeit des Behälters hervorrufen könnte.The aforementioned valve has compared to most of the market Systems also have the advantage that gas does not only come from escape the container into the open air, but also air penetrate through the valve into the interior of the container can. This fact means that even with transports the filled container under very different pressure conditions, e.g. over high mountains, on a plane or at Permeation of solvents through the container wall, there can never be a vacuum in the container, the dents the container walls and thus a reduction the stack compressive strength of the container could.
Das Ausführungsbeispiel 2 (Figur 2 und 3) ist hinsichtlich
der Funktionsweise mit dem Ausführungsbeispiel 1 nahezu
identisch. Es wird hier nur aus Gründen einer zusätzlichen
Sicherung zur Verhinderung des Austrittes von Flüssigkeitstropfen
nach extremen Flüssigkeits-Schlägen, die
z.B. beim Sturz eines Behälters auf den Verschluß entstehen,
über die Außenseite der Ventilhülse (3) ein becherförmiges
Käppchen (6), vorzugsweise aus PE, welches an
seinem Boden einen Schlitz (11) aufweist, gesteckt. Dieses
Käppchen (6) verfügt vorzugsweise an seiner Innenwandung
oberhalb des Innenwulstes (7) umlaufende
Dichtlippen (9), die gegenüber der Außenwand der Ventilhülse
(3) abdichten. Aufgabe dieses Käppchens (6) ist es,
zum einen bei extremen Flüssigkeits-Schlägen die kinetische
Energie des Füllgutes, die ohne Käppchen direkt auf
den Schaumstoff-Stopfen (4) einwirken würde, zu vermindern.
Zum anderen hat es die Aufgabe, dem Schaumstoff-Stopfen
(4) eine gleichmäßige Vorspannung zu verleihen
und damit den sogenannten Memory-Effekt zu unterstützen.
Der Schaumstoff-Stopfen (4) bleibt somit über einen
langen Zeitraum formstabil und funktionstüchtig.The embodiment 2 (Figures 2 and 3) is in terms
the operation with the
Das Ausführungsbeispiel 3 (Fig. 4 ) ist in seiner Funktionsweise
nahezu identisch mit dem Ausführungsbeispiel
2. Es wird hier lediglich ein mit einem Schlitz (13) versehenes,
im Boden zum Schaumstoff-Stopfen (4) hin gewölbtes
Eindrückkäppchen (12) hinter den Schaumstoff-Stopfen
in die Ventilhülse (3) mit Vorspannung eingepresst,
bis sein Bund (14) an der Unterkante der Ventilhülse
(3) anliegt. Der gewölbte Boden dieses Eindrückkäppchens
(12) liegt mit Vorspannung am Schaumstoff-Stopfen
(4) an, um über einen langen Zeitraum Formstabilität desselben
zu gewährleisten. The embodiment 3 (Fig. 4) is in its mode of operation
almost identical to the
- 1.1.
- VerschlüßoberbodenVerschlüßoberboden
- 2.Second
- Öffnung im VerschlussoberbodenOpening in the top shelf
- 3.Third
- Ventilhülsevalve sleeve
- 4.4th
- geschlossenporiger Schaumstoff-Stopfenclosed-pore foam stopper
- 5.5th
- umlaufender Wulstcircumferential bead
- 6.6th
- Käppchencopings
- 7.7th
- innenwulst im Käppcheninside bead in the cap
- 8.8th.
- umlaufende Ausnehmungcircumferential recess
- 9.9th
- Dichtlippensealing lips
- 10.10th
- Käppchenbodencap floor
- 11.11th
- Schlitz im KäppchenbodenSlit in the bottom of the cap
- 12.12th
- EindrückkäppchenEindrückkäppchen
- 13.13th
- Schlitz im Boden des EindrückkäppchensSlit in the bottom of the push-in cap
- 14.14th
- Bund des EindrückkäppchensBunch of the push-in cap
Claims (5)
- Gas release and gas entry valve in the closure of the filling and emptying opening of a container particularly for hazardous liquids, the ceiling (1) of which closure has an opening (2) and, upstream of the latter on the inside of the ceiling (1) of the closure, a valve sleeve (3),
characterised in that a closed-pored foam plug (4) made of plastics material, preferably electron-beam-crosslinked semi-rigid particulate foam made of polyethylene or of ethylene copolymer, is pressed into the valve sleeve (3) in such a way as to be under stress, so that a labyrinth is produced by the fact of the cells which are cut into in the foam plug bearing against the inside of the valve sleeve (3). - Gas release valve according to claim (1),
characterised in that the foam plug (4) is secured against slipping out by a circumferential bead (5) on the inside of the valve sleeve (3). - Gas release valve according to claims (1) and (2),
characterised in that a cup-shaped cap (6) having a slot (11) in its floor (10) is pressed over the valve sleeve (3) and provides a seal against the passage of liquid at the outside of the valve sleeve (3) by means of sealing lips (9). - Gas release valve according to claims, (1), (2) and (3),
characterised in that the floor (10) of the cup-shaped cap (6) rests against the top face of the foam plug (4) over an area and safeguards the foam plug (4) against deformation. - Gas release valve according to claims (1) and (2), characterised in that a press-in cap (12) having a floor domed towards the foam plug (4) is pressed into the valve sleeve (3) behind the foam plug (4) and rests against the top face of the foam plug (4) under stress and safeguards the plug (4) against deformation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29820270U DE29820270U1 (en) | 1998-11-12 | 1998-11-12 | Degassing and gassing valve |
| DE29820270U | 1998-11-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1000871A1 EP1000871A1 (en) | 2000-05-17 |
| EP1000871B1 true EP1000871B1 (en) | 2002-10-02 |
Family
ID=8065267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99121963A Expired - Lifetime EP1000871B1 (en) | 1998-11-12 | 1999-11-09 | Venting valve |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1000871B1 (en) |
| DE (2) | DE29820270U1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10038982A1 (en) * | 1999-08-16 | 2001-03-01 | Luk Lamellen & Kupplungsbau | Liquid reservoir for a hydraulic system incorporates bellows connected to surrounding atmosphere |
| DE10037488A1 (en) * | 2000-08-01 | 2002-11-28 | Zf Lenksysteme Gmbh | Venting device for an oil tank, in particular for hydraulic steering systems of motor vehicles |
| CA2914179A1 (en) * | 2014-12-12 | 2016-06-12 | Galderma S.A. | Sealable packaging device and related method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3903509A1 (en) * | 1989-02-06 | 1990-08-09 | Unilever Nv | CONTAINER CAP WITH INTERNAL PRESSURE LIMITER |
| DE9112190U1 (en) * | 1991-09-30 | 1991-12-05 | Frohn, Walter, Dr.-Ing., 8000 München | Degassing valve |
-
1998
- 1998-11-12 DE DE29820270U patent/DE29820270U1/en not_active Expired - Lifetime
-
1999
- 1999-11-09 EP EP99121963A patent/EP1000871B1/en not_active Expired - Lifetime
- 1999-11-09 DE DE59902915T patent/DE59902915D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP1000871A1 (en) | 2000-05-17 |
| DE59902915D1 (en) | 2002-11-07 |
| DE29820270U1 (en) | 1999-01-14 |
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