EP1505007A1 - Dispositif de fermeture pour conteneurs de matériau coulant et conteneur muni de ce dispositif - Google Patents

Dispositif de fermeture pour conteneurs de matériau coulant et conteneur muni de ce dispositif Download PDF

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Publication number
EP1505007A1
EP1505007A1 EP04254780A EP04254780A EP1505007A1 EP 1505007 A1 EP1505007 A1 EP 1505007A1 EP 04254780 A EP04254780 A EP 04254780A EP 04254780 A EP04254780 A EP 04254780A EP 1505007 A1 EP1505007 A1 EP 1505007A1
Authority
EP
European Patent Office
Prior art keywords
closure device
store
wall
flowable material
rim
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.)
Withdrawn
Application number
EP04254780A
Other languages
German (de)
English (en)
Inventor
Ivan Semenenko
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1505007A1 publication Critical patent/EP1505007A1/fr
Withdrawn legal-status Critical Current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
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/54—Gates or closures
    • B65D90/62—Gates or closures having closure members movable out of the plane of the opening
    • B65D90/626—Gates or closures having closure members movable out of the plane of the opening having a linear motion

Definitions

  • This invention relates to a closure device for a store of flowable material, such as a silo or an intermediate bulk container, and to a store equipped with such a closure device.
  • a closure device in the form of a cone valve to close a discharge opening of a store (such as a hopper) of flowable material, e.g. powder or other particulate material.
  • a store such as a hopper
  • flowable material e.g. powder or other particulate material.
  • These known valves are hollow and of plastic's material or flexible steel. The known valves will provide an effective seal against passage of cohesive powders but do not work without a separate seal for super fine powders.
  • a closure device for a store of flowable material the closure device being made of elastomeric material.
  • the closure device being made of elastomeric material, will provide an effective seal against passage not only of cohesive powders but also of super fine powders.
  • the closure device may be solid and have no enclosed cavities or confined spaces.
  • the closure device has a conical upper portion and an endless rim at the lower end of the conical portion for sealing against a wall of the store.
  • the thickness of the rim reduces as it extends away from the lower end of the conical portion. This renders the free edge of the rim more flexible and improves its sealing abilities.
  • the closure device may further comprise an endless wall within the rim and projecting from the lower surface of the conical upper portion to define a recess for receiving part of a closure operating member.
  • the thickness of the endless wall may reduce as it extends away from the conical portion. This renders the free edge of the rim more flexible allowing it to make a further seal with the wall of the store.
  • a store of flowable material having a closure device according to the first aspect of the invention and a discharge opening closable by the closure device.
  • the closure device 10 shown therein is intended to close the discharge opening of a store 20 (see Figure 2) of flowable particulate material, such as a silo or an intermediate bulk container containing powder or granular material, and is typically operated by a closure operating member movable upwardly by an actuator in a manner such as that described in GB-A-2348636.
  • a store 20 see Figure 2
  • flowable particulate material such as a silo or an intermediate bulk container containing powder or granular material
  • the closure device 10 has a conical upper portion 11, an endless rim (or outer skirt) 12 at the lower end of the conical portion 11 for sealing against a wall of the store 20 and an endless wall (or inner skirt) 13 within the rim 12 and projecting from the lower surface of the conical upper portion 11 to define a recess 14 for receiving part of a closure operating member in the form of a probe (not shown but see GB-A-2348636).
  • the closure device 10 is made of elastomeric material, typically rubber or polyethylene.
  • the closure device 10 may be solid with no enclosed cavities or confined spaces. It can thus be totally sanitary. In this case it can be injection moulded entirely of elastomeric material or can contain a steel insert 15 as shown.
  • both the rim 12 and the lower end of the wall 13 seal against the wall of the store 20.
  • the thickness of the rim 12 reduces as it extends away from the lower end of the conical portion 11 and the thickness of the endless wall 13 gradually reduces in tapered manner as it extends away from the conical portion 11.
  • the thickness of the rim 12 and endless wall 13 both reduce down to about 3 mm at their free ends. This increases the flexibility of the rim 12 and the wall 13 and improves their sealing abilities to the wall of the store 20 and the probe, respectively.
  • the closure device will provide an effective seal not only against passage of cohesive powders but also an effective seal against passage of super fine powders. This means that no separate gasket or seal has to be provided on the valve or the store and this renders the apparatus totally hygienic. Also, it is maintenance free and assembly/removal is made simple.
  • the double seal namely that provided between the endless rim 12 and the wall of the store 20 and that provided between the endless wall 13 and the wall of the store 20, ensures stability of the closure device with no tipping or leakage.
  • the upper seal between the rim 12 and the wall of the store 20 prevents or substantially prevents any product pressure on the lower seal between the wall 13 and the wall of the store 20 so that the lower seal only has to seal against dust and/or a small amount of product between the two seals.
  • a single soft seal at the outlet results in the product pressure forcing product through the outlet particularly as fine powders can easily become fluidised and act like a low viscosity liquid.
  • the wall 13 is flexible, it will establish a good seal with a tapered closure operating member with the result that the only product exposed to atmosphere will be the thin ring of product dust at the bottom edge of the endless wall 13.
  • the actuator will move the probe upwardly to open the closure device 10 and can then be operated to pulse the closure device upwards and downwards in order to break up powder above the upper surface of the conical portion 11 as more particularly described, for example, in GB-A-2348636.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Closures For Containers (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)
EP04254780A 2003-08-08 2004-08-09 Dispositif de fermeture pour conteneurs de matériau coulant et conteneur muni de ce dispositif Withdrawn EP1505007A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0318610A GB2404654A (en) 2003-08-08 2003-08-08 Cone shape closure device made of elastomeric material for store of flowable material
GB0318610 2003-08-08

Publications (1)

Publication Number Publication Date
EP1505007A1 true EP1505007A1 (fr) 2005-02-09

Family

ID=27839858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04254780A Withdrawn EP1505007A1 (fr) 2003-08-08 2004-08-09 Dispositif de fermeture pour conteneurs de matériau coulant et conteneur muni de ce dispositif

Country Status (3)

Country Link
EP (1) EP1505007A1 (fr)
JP (1) JP2005059959A (fr)
GB (1) GB2404654A (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1575873A (fr) * 1968-05-31 1969-07-25
EP0704394A1 (fr) * 1994-07-11 1996-04-03 Matcon Limited Dispositif de manutention de matériau en vrac
WO1997008080A1 (fr) * 1995-08-25 1997-03-06 Matcon (R & D) Limited Appareil de manutention de materiaux
EP1082559A1 (fr) * 1998-06-05 2001-03-14 Matcon (R & D) Limited Liaison etanche

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB626030A (en) * 1947-07-19 1949-07-07 Archibald Percy Thomas Improvements in closure devices for sinks, baths, or wash-basins
JPH0741595B2 (ja) * 1988-06-11 1995-05-10 武士 山本 紙製キャリアテープの製造方法およびその製造方法に使用する金型
NL9002241A (nl) * 1990-10-15 1992-05-06 Zeger Cornelis Houtop Inschuifbare kegelvormige plug voor het afsluiten van een productstroom.
GB2333287B (en) * 1999-03-24 2002-08-21 Ivan Semenenko Material handling apparatus
GB0125037D0 (en) * 2001-10-18 2001-12-12 Semenenko Ivan Material handling apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1575873A (fr) * 1968-05-31 1969-07-25
EP0704394A1 (fr) * 1994-07-11 1996-04-03 Matcon Limited Dispositif de manutention de matériau en vrac
WO1997008080A1 (fr) * 1995-08-25 1997-03-06 Matcon (R & D) Limited Appareil de manutention de materiaux
EP1082559A1 (fr) * 1998-06-05 2001-03-14 Matcon (R & D) Limited Liaison etanche

Also Published As

Publication number Publication date
GB0318610D0 (en) 2003-09-10
JP2005059959A (ja) 2005-03-10
GB2404654A (en) 2005-02-09

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