EP0296437A2 - Fermeture de dégazage pour réceptacles pour liquides - Google Patents

Fermeture de dégazage pour réceptacles pour liquides Download PDF

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Publication number
EP0296437A2
EP0296437A2 EP88109343A EP88109343A EP0296437A2 EP 0296437 A2 EP0296437 A2 EP 0296437A2 EP 88109343 A EP88109343 A EP 88109343A EP 88109343 A EP88109343 A EP 88109343A EP 0296437 A2 EP0296437 A2 EP 0296437A2
Authority
EP
European Patent Office
Prior art keywords
closure
liquid
degassing
housing
adsorbent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88109343A
Other languages
German (de)
English (en)
Other versions
EP0296437B1 (fr
EP0296437A3 (en
Inventor
Frank Dipl.-Ing. Joseph
Winfried Trinkaus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Merck Patent GmbH
Original Assignee
Merck Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Merck Patent GmbH filed Critical Merck Patent GmbH
Publication of EP0296437A2 publication Critical patent/EP0296437A2/fr
Publication of EP0296437A3 publication Critical patent/EP0296437A3/de
Application granted granted Critical
Publication of EP0296437B1 publication Critical patent/EP0296437B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 closure for liquid containers, with a closure housing which can be tightly connected to the liquid container and in which an absorption or neutralizing agent pack is arranged above a sieve plate.
  • degassing closures also referred to as degassing valves
  • degassing valves are placed on containers for liquids that continuously develop gases or vapors.
  • the gas-permeable degassing closure prevents an excessive internal pressure from building up in the container, while at the same time it must be ensured that the gases or vapors produced in the interior of the container have no disruptive, annoying or harmful effects on the environment.
  • Gas permeable caps with filter inserts are known in different embodiments (US Pat. No. 4,420,094, 3,944,437). Here, however, purely mechanical filter inserts are used, which are not suitable for retaining gaseous or vaporous substances, so that they can escape into the environment.
  • a known degassing closure of the type mentioned is designed as an odor trap (DE-OS 34 08 887).
  • This odor trap contains an adsorbent pack, for example made of activated carbon or molecular sieve, which is followed by a plastic sieve on the container side. This plastic sieve is only used to hold the adsorbent pack.
  • a gas-permeable but liquid-impermeable closure is provided below the plastic sieve, which consists of a closure ball and a finely capillary fluted ball seat.
  • the ball represents a moving part that could cause abrasion at its seat.
  • the abrasion particles could get into the liquid in the container.
  • Particles of the adsorbent pack for example the activated carbon, could also get into the ball seat through the plastic sieve and from there exit when the sealing ball moves into the interior of the container.
  • the issue of the invention is therefore to provide a degassing valve of the type mentioned at the outset, which is suitable for use on containers for high-purity liquids.
  • any contamination of the liquid must be excluded; therefore moving parts that generate abrasion must be avoided. Further must Prevent particles of the adsorbent can get into the liquid. Finally, any possibility of contact of the liquid with parts with which the liquid could react must be excluded.
  • adsorbent pack is enclosed between a lower and an upper frit plate sealingly sealing the closure housing made of inert material and that the closure housing also consists of inert material.
  • the frit plate adjoining the adsorbent pack on the container side represents a gas-permeable, but largely liquid-tight closure, which, however, has no moving parts, so that no abrasion can occur. Therefore, there is no danger that high-purity liquids that are transported in the container will be contaminated by abrasion.
  • the frit plate represents a gas-permeable, but largely liquid-tight closure, which enables degassing, but at the same time prevents the penetration of liquid into the adsorbent pack. This eliminates the risk that the liquid will come into direct contact with the adsorbent and that parts of the adsorbent will be washed out and could get into the liquid as impurities.
  • the frit plate is impermeable even to the finest particles of the adsorbent, so that these particles cannot get into the liquid.
  • the upper, equally fine-pored frit plate on the one hand prevents the ingress of contaminants from outside into the adsorbent pack, the functionality of which could be impaired, and on the other hand keeps the adsorbent pack tight in the closure housing, so that even a fine-grained or powdered adsorbent cannot escape.
  • this upper frit plate represents an additional liquid-tight closure which, in the event of extreme stresses on the liquid container, for example in the event of an accident-related fall, offers additional security against the escape of the often dangerous and / or toxic liquid.
  • the degassing closure according to the invention is therefore suitable for those liquid containers in which high-purity liquids are stored and transported, such as are used, for example, in semiconductor production.
  • the lower and / or the upper frit plate is pressed against a housing seat by a nut screwed onto the closure housing.
  • a firm and tight connection is created between the two frit plates and the lock housing.
  • the invention is explained in more detail using an exemplary embodiment that is shown in the drawing.
  • the drawing shows one Degassing cap half in a vertical section and half in a side view.
  • a degassing cap 1 is screwed onto a liquid container 2, which is only indicated by dash-dotted lines in the drawing.
  • the degassing closure 1 has an essentially cylindrical closure housing 1, which has in its bottom 4 a connection opening 5 with an internal thread, which is screwed onto a connection piece of the liquid container 2.
  • an adsorbent pack 6 which consists for example of activated carbon, molecular sieve or diatomaceous earth and / or of a neutralizing agent, the chemical behavior of which is based on the liquid contained in the liquid container 2. It is in particular a highly pure, but in most cases also aggressive and / or toxic liquid that is used, for example, in semiconductor production, for example a highly pure, highly concentrated acid or alkali.
  • a bottom frit plate 7 is arranged above the bottom 4 of the closure housing 3 and is pressed sealingly against a housing seat 9 by a nut 8 screwed into the closure housing 3.
  • the lower frit plate 7 consists of an inert material, preferably of polytetrafluoroethylene or perfluoroalkoxy copolymer with a pore size of preferably from 0.1 to 1 ⁇ m.
  • the closure housing 3 On the top of the closure housing 3 there is an upper frit plate 10 made of the same material as the lower frit plate 7.
  • the upper frit plate 10 is also sealed against one by a union nut 11 Housing seat 12 pressed.
  • the adsorbent pack 6 is thus enclosed between the frit plates 7 and 10 in the closure housing 3.
  • the degassing closure 1 can also be connected to the liquid container 2 via a pipeline or a hose line.
  • the gases or vapors formed in the liquid container 2 enter the degassing closure 1 from below, as indicated by an arrow 13 in the drawing.
  • the alleys or vapors enter the adsorbent pack 6 and are adsorbed, absorbed and / or neutralized there. At the same time it is achieved that no impermissible internal pressure can build up in the liquid container 2.
  • At least the closure housing 3 and preferably also the nuts 8, 11 are made of inert material, it is effectively prevented that the liquid received in the liquid container 2 can react with parts of the degassing closure.
  • Fluorinated plastics such as polytetrafluoroethylene, polyvinylidene fluoride or perfluoroalkoxy copolymer are preferably used as the material for the parts of the degassing closure 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Degasification And Air Bubble Elimination (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Packages (AREA)
EP88109343A 1987-06-25 1988-06-11 Fermeture de dégazage pour réceptacles pour liquides Expired - Lifetime EP0296437B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873720939 DE3720939A1 (de) 1987-06-25 1987-06-25 Entgasungsverschluss fuer fluessigkeitsbehaelter
DE3720939 1987-06-25

Publications (3)

Publication Number Publication Date
EP0296437A2 true EP0296437A2 (fr) 1988-12-28
EP0296437A3 EP0296437A3 (en) 1989-03-15
EP0296437B1 EP0296437B1 (fr) 1991-11-27

Family

ID=6330236

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88109343A Expired - Lifetime EP0296437B1 (fr) 1987-06-25 1988-06-11 Fermeture de dégazage pour réceptacles pour liquides

Country Status (2)

Country Link
EP (1) EP0296437B1 (fr)
DE (2) DE3720939A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2646100A1 (fr) * 1989-04-25 1990-10-26 Sogea Dispositif pour l'epuration des gaz echanges entre l'interieur d'un caveau et l'exterieur
EP0519168A1 (fr) * 1991-06-17 1992-12-23 Frohn, Eric, Dr.Jur. Soupape de dégazage pour un récipient destiné au transport de liquides dangereux
WO1994001340A1 (fr) * 1992-07-14 1994-01-20 Ecolab Inc. Event de fermeture a charbon actif
EP0659657A1 (fr) * 1993-12-23 1995-06-28 Luigi Goglio Valve de dégazage pour produits aromatiques tels que café ou similaire
EP0754630A1 (fr) * 1995-07-19 1997-01-22 W.L. GORE & ASSOCIATES GmbH Capuchon de fermeture pour récipients, bouteilles ou analogues

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9107432U1 (de) * 1991-06-17 1991-08-22 Frohn, Eric, 8000 München Entgasungsventil

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB507941A (en) * 1938-02-07 1939-06-23 Automotive Prod Co Ltd Improvements in or relating to vented closure devices for liquid containers
DE949389C (de) * 1954-08-08 1956-09-20 Fritz Roth K G Verschlussdeckel fuer Fluessigkeitsbehaelter, insbesondere Brennstoffbehaelter von Kraftfahrzeugen
GB1395744A (en) * 1972-05-22 1975-05-29 Automotive Proeucts Ltd Oil filler cap
DE7506673U (de) * 1975-03-04 1975-07-24 Elbatainer Kunststoff Druckausgleichs-Schraubkappe
US3961724A (en) * 1975-03-13 1976-06-08 Briggs & Stratton Corporation Fuel tank filler cap with improved vent
DE3039528A1 (de) * 1980-10-20 1982-06-03 Degussa Ag, 6000 Frankfurt Sicherheitsvorrichtung fuer emballagen, welche wasserstoff abgebende pyrophore metallkatalysatoren enthalten
DE8233621U1 (de) * 1982-11-30 1983-02-03 Rhein-Conti Kunststofftechnik GmbH, 6800 Mannheim Gasdurchlaessiger Gefaessverschluss
DE3408887A1 (de) * 1984-03-10 1985-09-12 Henkel KGaA, 4000 Düsseldorf Geruchsverschluss

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2646100A1 (fr) * 1989-04-25 1990-10-26 Sogea Dispositif pour l'epuration des gaz echanges entre l'interieur d'un caveau et l'exterieur
EP0395501A1 (fr) * 1989-04-25 1990-10-31 SOGEA, Société Anonyme Dispositif pour l'épuration des gaz échangés entre l'intérieur d'un caveau et l'extérieur
EP0519168A1 (fr) * 1991-06-17 1992-12-23 Frohn, Eric, Dr.Jur. Soupape de dégazage pour un récipient destiné au transport de liquides dangereux
WO1994001340A1 (fr) * 1992-07-14 1994-01-20 Ecolab Inc. Event de fermeture a charbon actif
EP0659657A1 (fr) * 1993-12-23 1995-06-28 Luigi Goglio Valve de dégazage pour produits aromatiques tels que café ou similaire
US5515994A (en) * 1993-12-23 1996-05-14 Goglio; Luigi Degassing valve for aromatic products, such as coffee and similar products
EP0754630A1 (fr) * 1995-07-19 1997-01-22 W.L. GORE & ASSOCIATES GmbH Capuchon de fermeture pour récipients, bouteilles ou analogues

Also Published As

Publication number Publication date
DE3866438D1 (de) 1992-01-09
EP0296437B1 (fr) 1991-11-27
DE3720939A1 (de) 1989-01-05
EP0296437A3 (en) 1989-03-15

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