EP1371581A1 - Fluidisiervorrichtung - Google Patents

Fluidisiervorrichtung Download PDF

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Publication number
EP1371581A1
EP1371581A1 EP03396055A EP03396055A EP1371581A1 EP 1371581 A1 EP1371581 A1 EP 1371581A1 EP 03396055 A EP03396055 A EP 03396055A EP 03396055 A EP03396055 A EP 03396055A EP 1371581 A1 EP1371581 A1 EP 1371581A1
Authority
EP
European Patent Office
Prior art keywords
compartments
gaseous medium
plate
fluidisation
feeding
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Withdrawn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
EP03396055A
Other languages
English (en)
French (fr)
Inventor
Jan-Peter BJÖRKLUND
Pekka Ettala
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.)
LAHTI PRECISION Oy
Original Assignee
Raute Dry Mix Oy
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 Raute Dry Mix Oy filed Critical Raute Dry Mix Oy
Publication of EP1371581A1 publication Critical patent/EP1371581A1/de
Withdrawn legal-status Critical Current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
    • B65D88/00—Large containers
    • B65D88/54—Large containers characterised by means facilitating filling or emptying
    • B65D88/72—Fluidising devices

Definitions

  • the scope of the invention is an apparatus placed at the bottom of a relatively large container or silo, with the help of which the flowing of a powder-like substance from the container may be assisted.
  • the effect improving the flowing i.e. the fluidisation effect, is created by leading, with the apparatus, a gaseous medium preferably air, into the powder-like substance that it is in surface contact with.
  • the apparatus as such works well and solves the problems of feeding the powder-like substance, such as vaulting, because of which the feeding can be made to happen as an essentially even flow.
  • a problem with the apparatus though, is the difficulty of installing it. It is also only suitable for containers with an inner base of metal. The installation also requires that the base has to be perforated at several points to create a supply of the gaseous medium to the different chambers.
  • the apparatus is implemented as a plate-like unit ready for installation, as specified more in detail in the enclosed claims.
  • Fig. 1 an example of an apparatus according to the invention is shown after the casting and vulcanisation phase of its manufacturing process from beneath or i.e. its moulding side.
  • the body of the apparatus if formed by a grate-like, flat surfaced set of compartments, consisting of separate compartments 2.
  • the set of compartments is manufactured in a corresponding mould by moulding from an elastomer that can be vulcanised in the mould to an appropriate hardness.
  • One of the flat surfaces of the set of compartments is properly covered during the moulding and vulcanisation phase by a fabric or a carpet 1, as shown in Fig. 2.
  • carpet 1 is attached to the corresponding flat surface of the set of compartments.
  • Said carpet is advantageously the porous surface of the apparatus, that comes in touch with the fine substance to be fluidised.
  • the carpet lets the gaseous medium through, but does not let the fine solid substance through, that the apparatus is used to fluidise.
  • a system of channels is incorporated in its structure, with the help of which, in the completed apparatus, the gaseous medium is lead to individual compartments 2.
  • the system of channels is formed appropriately by tubes 3 that are placed in the casting mould before the casting phase, to run in one direction of the apparatus through the successive compartments 2.
  • the tubes 3 forming the system of channels consist advantageously of a plastic material, that stands the temperature used in the manufacturing process of the set of compartments.
  • the tubes are equipped, at each compartment, with an opening flow went, that is dimensioned according to the purpose of use for the apparatus to achieve an appropriately strangled flow of the gaseous medium into each compartment 2.
  • the feeding capacity of the tube 3 should be enough to allow a sufficient flow of gaseous medium to all the compartments in the corresponding row also in the cases, where some of the compartments are no longer covered by the fine substance.
  • the apparatus is finished after the moulding and vulcanising, by covering the still free surfaced side of the set of compartments with a lock plate or carpet 4.
  • a carpet 4 an elastomer material is used, that is attachable to the dividing walls by, for example, gluing.
  • other methods of attaching known for elastomer materials, can of course be used, such as local heating of surfaces to be combined, for example with radiant heating.
  • the carpet 1 forming the porous surface of the apparatus may be attached to the corresponding surface of the set of compartments by using these alternative methods as a separate function from the moulding and vulcanisation phase.
  • a gathering part 5 can be moulded at one of the gable edges that bind together the feeding ends of the feeding tubes 3 to a unit.
  • the feeding tubes are thus easily connectable to the manifold of the feed of the gaseous medium.
  • the apparatus according to the present invention forms a plate-like or carpet-like construction, that includes all the necessary elements for the functioning of the apparatus, and that is possible to install as such for example at the bottom of a storage silo.
  • the attachment is advantageously carried out by gluing the lock plates 4 of the apparatus to the bottom of the silo.
  • the construction can be made flexible, in which case it adapts without problems to the possible irregularities of the place of instalment.
  • the independent structure makes it possible to attach the apparatus to surfaces of different materials, such as concrete surfaces. Even large surfaces can easily be covered, by installing several units side by side, and/or one after another.
  • the flexibility of the apparatus may be made so good that the apparatus can be rolled together for storage and transportation, and accordingly be rolled out directly at its place of instalment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
EP03396055A 2002-06-12 2003-06-11 Fluidisiervorrichtung Withdrawn EP1371581A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20021133A FI115518B (fi) 2002-06-12 2002-06-12 Jauhemaisen aineen valutuslaite
FI20021133 2002-06-12

Publications (1)

Publication Number Publication Date
EP1371581A1 true EP1371581A1 (de) 2003-12-17

Family

ID=8564134

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03396055A Withdrawn EP1371581A1 (de) 2002-06-12 2003-06-11 Fluidisiervorrichtung

Country Status (2)

Country Link
EP (1) EP1371581A1 (de)
FI (1) FI115518B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005014449A1 (en) * 2003-07-18 2005-02-17 Linertech Limited Fluidising mat, container and container liner with such a mat

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH415464A (de) * 1964-03-24 1966-06-15 Buehler Ag Geb Gasdurchlässige Platte mit Mitteln zur Erhöhung ihrer Biegefestigkeit
GB2116938A (en) * 1982-03-16 1983-10-05 Cyclonaire Corp Method and apparatus for handling bulk material
WO1989011378A1 (en) 1988-05-25 1989-11-30 Oy Partek Ab A discharge apparatus
US5547331A (en) * 1992-09-24 1996-08-20 Podd; Stephen D. Method for loading bulk material into a cargo container with an aeration/vacuum liner pad system
WO2003037753A1 (en) * 2001-11-01 2003-05-08 David Stuart Dick Improvements in and relating to dischargers for powders

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH415464A (de) * 1964-03-24 1966-06-15 Buehler Ag Geb Gasdurchlässige Platte mit Mitteln zur Erhöhung ihrer Biegefestigkeit
GB2116938A (en) * 1982-03-16 1983-10-05 Cyclonaire Corp Method and apparatus for handling bulk material
WO1989011378A1 (en) 1988-05-25 1989-11-30 Oy Partek Ab A discharge apparatus
US5547331A (en) * 1992-09-24 1996-08-20 Podd; Stephen D. Method for loading bulk material into a cargo container with an aeration/vacuum liner pad system
WO2003037753A1 (en) * 2001-11-01 2003-05-08 David Stuart Dick Improvements in and relating to dischargers for powders

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005014449A1 (en) * 2003-07-18 2005-02-17 Linertech Limited Fluidising mat, container and container liner with such a mat
GB2418406A (en) * 2003-07-18 2006-03-29 Linertech Ltd Fluidising matt, container and container liner with such a mat
GB2418406B (en) * 2003-07-18 2006-12-13 Linertech Ltd Fluidising mat, container and container liner with such a mat
US7448831B2 (en) 2003-07-18 2008-11-11 Linertech Limited Fluidising mat, container and container liner with such a mat

Also Published As

Publication number Publication date
FI20021133A (fi) 2003-12-13
FI20021133A0 (fi) 2002-06-12
FI115518B (fi) 2005-05-31

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