EP2468653B1 - Spundlochdeckel - Google Patents

Spundlochdeckel Download PDF

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Publication number
EP2468653B1
EP2468653B1 EP10194848.7A EP10194848A EP2468653B1 EP 2468653 B1 EP2468653 B1 EP 2468653B1 EP 10194848 A EP10194848 A EP 10194848A EP 2468653 B1 EP2468653 B1 EP 2468653B1
Authority
EP
European Patent Office
Prior art keywords
bunghole
seal
transport
drum
closure
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.)
Not-in-force
Application number
EP10194848.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2468653A1 (de
Inventor
Andreas Strelzyk
Thomas Anthon
Rudolf-Richard Seidel
Martin Stürmann
Werner Buck
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.)
Lanxess Deutschland GmbH
Original Assignee
Lanxess Deutschland 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=43902976&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2468653(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Lanxess Deutschland GmbH filed Critical Lanxess Deutschland GmbH
Priority to CH10194848.7T priority Critical patent/CH2468653H1/de
Priority to EP10194848.7A priority patent/EP2468653B1/de
Priority to CN201110418447.7A priority patent/CN102530376B/zh
Publication of EP2468653A1 publication Critical patent/EP2468653A1/de
Application granted granted Critical
Publication of EP2468653B1 publication Critical patent/EP2468653B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65D39/00—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers
    • B65D39/08—Threaded or like closure members secured by rotation; Bushes therefor
    • B65D39/082—Bung-rings and bungs for bung-holes
    • 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
    • B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
    • B65D53/10—Sealing or packing elements; Sealings formed by liquid or plastics material characterised by special adaptation to acid-proof vessels

Definitions

  • the present invention relates to a bunghole cover according to the preamble of claim 1, with the aid of a bunghole of a transport barrel, in particular a Rollsickenankes, can be closed and as he, for example, from BE 717 654 is known.
  • Rollsick barrels are used to transport liquid products.
  • a bunghole is provided in a barrel body of Rollsickenkraftes to fill the liquid product and pour later.
  • the bunghole can be closed with a bunghole cover.
  • a well-known bunghole cover has a lid body, on whose outer lateral surface a seal in the form of an O-ring is provided in order to close the bunghole tight can.
  • the O-ring is made of a fluororubber, which is a polymer containing a vinylidene (di) fluoride (VDF) monomer. This O-ring has a hardness of 70 to 90 Shore A and can therefore be easily deformed, resulting in a particularly good sealing seal, which is also chemically stable.
  • the bunghole cover according to the invention for closing a transport barrel containing thionyl chloride has a lid body for closing a bunghole of the transport barrel and a seal resting on the lid body and enclosing the lid body in the circumferential direction, wherein according to the invention the seal is made of a fully halogenated polymer, in particular PTFE and / or PCTFE, is made.
  • the lid body may for example be designed as a substantially cylindrical plug, which cooperates radially outwardly on its lateral surface with a boundary of the bunghole of the transport barrel.
  • the lid body can be screwed in particular with the transport keg.
  • the bunghole have an internal thread and the cover body have a corresponding external thread or vice versa.
  • the cover body may be designed in particular U-shaped in cross-section, so that results from low material use a large lateral surface which is completely closed at exactly one end in the radial direction.
  • the seal can form a closed ring and rest in the circumferential direction substantially without gaps on the lateral surface.
  • a press fit is provided between the seal and the lid body.
  • fully halogenated polymers are polymers such as homopolymers or copolymers which consist of at least 95%, preferably at least 99%, more preferably at least 99.9% and particularly preferably 100%, of recurring units which are completely different derived halogenated, preferably completely fluorinated or fully fluorinated and chlorinated and therefore hydrogen-free monomers.
  • Preferred fully halogenated polymers are polytetrafluoroethylene (PTFE) and polychlorotrifluoroethylene (PCTFE).
  • the lid body has a thread and a radially projecting collar, wherein the seal between the collar and the thread is arranged.
  • the thread of the bunghole cover can be bolted to the transport drum, so that over the collar a torque corresponding to the contact pressure on the seal can be exercised. Due to the contact pressure, the seal may deform somewhat and provide an increased sealing effect.
  • the seal can not be damaged by the screw connection of the lid body with the transport drum, since the seal is not subjected to a shear force between the cooperating threads.
  • the seal in the screwed-in state of the bunghole cover, the seal can lie completely closed circumferentially both on the cover body and on the transport drum.
  • the seal can bear in particular in the axial direction on the one hand on the collar and on the other hand at least partially on a thread of the thread.
  • the seal is arranged defined in the axial direction, so that an undesired inclination of the seal is avoided or at least significantly reduced.
  • the mass fraction w of the fully halogenated polymer, in particular PTFE, in the seal is preferably 0.80 ⁇ w ⁇ 1.00, in particular 0.90 ⁇ w ⁇ 0.99, preferably 0.95 ⁇ w ⁇ 0.98, and particularly preferably 0 , 96 ⁇ w ⁇ 0.97.
  • the seal can consist almost completely of the fully halogenated polymer. Additives, such as fillers or binders, are present if at all only with small proportions. This leads to a particularly high chemical resistance of the seal against corrosion, in particular by thionyl chloride.
  • the hardness h of the seal in Shore D is particularly preferably 45 ⁇ h ⁇ 75, preferably 50 ⁇ h ⁇ 70 and particularly preferably 55 ⁇ h ⁇ 65. With this hardness, the seal can still be slightly deformed, so that the gasket can cling to the seal at the contact surfaces. Such a hardness can be achieved without difficulty in a gasket which essentially comprises PTFE. At the same time, the seal is so hard that the seal can be pressed onto the cover body with sufficient pretension.
  • the seal is designed as a closed ring or round cord.
  • the closed ring is made of a round cord, which is connected to each other at their axial ends, for example by gluing or vulcanization.
  • the seal can be made easily and inexpensively.
  • the seal or the round cord can be produced by means of extrusion.
  • the lid body is made of a galvanized steel.
  • the lid body has a high corrosion resistance.
  • the lid body with a corrosion-inhibiting Coating for example by painting, be provided. The corrosion resistance of the lid body and the seal can thereby be adapted to each other, so that the period of time until the seal is corroded substantially corresponds to the period until the lid body is corroded.
  • the invention further relates to a transport keg, in particular Rollsickenkraft, for transporting liquid thionyl chloride, with a barrel body for forming a transport volume, wherein the barrel body has at least one bung hole for filling of thionyl chloride in the transport volume and / or for discharging thionyl chloride from the transport volume.
  • a bunghole cover is inserted, which may be as described above and further educated.
  • the transport keg can in particular be explained and further developed as described above with reference to the bunghole cover. Through the bunghole cover an increased life of the transport barrel is possible.
  • the barrel body may in particular be provided internally and / or externally with a corrosion-inhibiting coating.
  • the barrel body may preferably be galvanized.
  • the barrel body may, for example, have a substantially cylindrical jacket, which preferably has beads pointing in the radial direction.
  • the respective bead is closed in particular in the circumferential direction, so that the barrel body is mechanically stabilized.
  • the transport keg can be easily rolled by means of the circumferential beads with low frictional resistance.
  • the jacket can be closed at the front, each with a bottom, the bottom is connected in particular by crimping with the jacket.
  • at least one of the trays has at least one bunghole.
  • the respective trays are offset in particular to the front side of the shell on the other bottom, so that several similar transport barrels can be stacked.
  • the bottom having the bunghole is offset to the front side of the shell so that the bunghole cover does not protrude beyond the level of the front side of the shell in the inserted state.
  • the bunghole cover is screwed into the bunghole with a maximum tightening torque M, wherein for the maximum tightening torque M 30 Nm ⁇ M ⁇ 70 Nm, in particular 35 Nm ⁇ M ⁇ 60 Nm, preferably 40 Nm ⁇ M ⁇ 55 Nm and especially preferably 45 Nm ⁇ M ⁇ 50 Nm applies.
  • M a tightening torque
  • Such a tightening torque can be applied by a person without much difficulty.
  • damage to the bunghole cover and / or the transport barrel is avoided with such a tightening torque. tries have shown that such a low tightening torque is already sufficient to achieve a sufficient tightness.
  • the barrel body has a first bunghole, in particular with a G2 internal thread, and a second bunghole, in particular with a G3 / 4 internal thread, wherein both the first bunghole and the second bunghole are each closed by a bunghole cover, which can be trained and educated above described.
  • the larger bung hole can be used for pouring and / or pouring, while the smaller bung hole can allow pressure equalization of the transport volume with the environment.
  • Both the first bung hole and the second bunghole can be closed by similar bunghole cover of appropriate size.
  • the first bung hole and the second bung hole are provided in the same bottom of the barrel body.
  • the bunghole is formed by a particular connected by crimping with the barrel body insert.
  • a thread for screwing with the bunghole cover can be formed without having to provide a complicated geometry for the barrel body.
  • the insert may in particular have a flange, which preferably rests flat against the drum body, in particular at a bottom of the drum body, from inside in the region of the transport volume.
  • the insert can be connected in particular outside the transport volume with the barrel body by crimping, crimping or other non-cutting bending process.
  • the flange of the insert can be pressed by the bending process against the barrel body, so that there is a stable and substantially immobile connection of the insert with the barrel body.
  • the transport volume of the drum body is at least partially filled with thionyl chloride.
  • the invention further relates to a use of a fully halogenated polymer, in particular PTFE and / or PCTFE, as a seal for sealing a transport keg containing at least partially a corrosive liquid. Due to the fully halogenated polymer, an increased service life of the transport barrel is made possible.
  • a fully halogenated polymer in particular PTFE and / or PCTFE
  • corrosive liquids are preferably substances which react with water under standard conditions to form hydrogen halides, in particular hydrogen chloride.
  • a preferred corrosive fluid is thionyl chloride.
  • the invention will be explained in more detail based on comparative experiments carried out.
  • two similar transport drums were filled with thionyl chloride per experiment.
  • the bung holes of the two transport drums were closed with the same bunghole lids.
  • the drums were stored and essentially stopped moving.
  • the different tests differ in that bunghole covers with different seals and / or different tightening torques were used for different tests.
  • the selected tightening torque was set using a torque wrench.
  • the drums were checked optically every day to see if any signs of corrosion were visible on the surface of the respective transport drum.
  • a bunghole cover without gasket was bolted to a bunghole with a tightening torque of 70 Nm. After 42 days, corrosion is visible.
  • a bunghole cover without gasket was bolted to a bunghole with a tightening torque of 90 Nm. After 42 days, corrosion is visible.
  • a polypropylene (PP) stopper was plugged into a bunghole. After a short time, significant corrosion was visible.
  • a bunghole cover with a jacketed polymethylene (PE) seal was screwed into a bunghole. After a few days, corrosion was visible.
  • PE polymethylene
  • a bunghole lid with a PE gasket and applied synthetic grease was screwed into a bunghole. After about 3 months, corrosion was visible.
  • a bunghole lid with a fluororubber gasket was screwed into a bunghole. After about 5 months, significant corrosion was evident.
  • a bunghole cover with a PTFE gasket was screwed into a bunghole with a tightening torque of 60 Nm. Even after 9 months, no corrosion was evident.
  • a bunghole cover with a PTFE gasket was screwed into a bunghole with a tightening torque of 50 Nm. Even after 9 months, no corrosion was evident.
  • the bung-hole lids according to the invention which were tested in Examples 7 and 8, have proved to be clearly superior in terms of the service life of filled thionyl chloride in comparison to the bunghole lids of Examples 1 to 6 not according to the invention.
  • FIG. 1 illustrated transport drum 10 has a barrel body 12 which limits a transport volume 14.
  • the drum body 12 has a substantially cylindrical shell 16 with circumferential beads 18 pointing radially outward in the circumferential direction. At the end faces of the shell 16 is closed, each with a bottom 20, wherein the bottoms 20 are arranged slightly offset from one another to the axial end of the shell 16.
  • the bottoms 20 are connected to the shell 16 of the barrel body 12 by crimping or folding.
  • One of the bottoms 20 has a first bunghole 22 with a G2 female thread and a second bunghole 24 with a G3 / 4 female thread.
  • the bunghole 22, 24 may be formed by a crimped with the bottom 20 insert 26 which provides an internal thread 28.
  • the insert 26 may have a flange 30, which rests in the transport volume 14 of the drum body 12 from the inside to the bottom 20.
  • the bung roof 22, 24 can be closed and opened by a bunghole cover 32.
  • the bunghole cover 32 has a substantially U-shaped in cross-section lid body 34 which forms an external thread 36.
  • a radially outwardly facing circumferential collar 40 is provided in the axial direction spaced. Between the collar 40 and the external thread 36, a seal 42 is provided, which in particular substantially PTFE exists.
  • an additional seal 44 may be provided, which may preferably be made of the same material as the seal 42.
  • the additional seal 44 is in particular likewise essentially made of a fully halogenated polymer, in particular PTFE and / or PCTFE, and can be correspondingly formed and developed as explained above with reference to the seal 42.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
EP10194848.7A 2010-12-14 2010-12-14 Spundlochdeckel Not-in-force EP2468653B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CH10194848.7T CH2468653H1 (2) 2010-12-14 2010-12-14
EP10194848.7A EP2468653B1 (de) 2010-12-14 2010-12-14 Spundlochdeckel
CN201110418447.7A CN102530376B (zh) 2010-12-14 2011-12-14 桶孔封闭器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10194848.7A EP2468653B1 (de) 2010-12-14 2010-12-14 Spundlochdeckel

Publications (2)

Publication Number Publication Date
EP2468653A1 EP2468653A1 (de) 2012-06-27
EP2468653B1 true EP2468653B1 (de) 2013-06-05

Family

ID=43902976

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10194848.7A Not-in-force EP2468653B1 (de) 2010-12-14 2010-12-14 Spundlochdeckel

Country Status (3)

Country Link
EP (1) EP2468653B1 (2)
CN (1) CN102530376B (2)
CH (1) CH2468653H1 (2)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2772449A1 (en) * 2013-02-28 2014-09-03 Technocraft Industries (India) Ltd. Insert for a drum closure

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB707188A (en) * 1952-03-21 1954-04-14 Pfaudler Co Inc Improvements in or relating to a nozzle construction preventing corrosion of container nozzles
BE717654A (2) * 1967-07-06 1968-12-16
CN85201078U (zh) * 1985-04-01 1986-01-01 大连市机电研究所 复合式存液桶
CN2184656Y (zh) * 1993-05-21 1994-12-07 大连滨海制桶厂 软衬钢桶
JP2001519301A (ja) * 1997-10-13 2001-10-23 バルワー エス．アー． バルブ用シールジョイント

Also Published As

Publication number Publication date
EP2468653A1 (de) 2012-06-27
CN102530376A (zh) 2012-07-04
CH2468653H1 (2) 2019-09-30
CN102530376B (zh) 2016-02-24

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