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WO1989011378A1 - Appareil dechargeur - Google Patents

Appareil dechargeur Download PDF

Info

Publication number
WO1989011378A1
WO1989011378A1 PCT/FI1989/000096 FI8900096W WO8911378A1 WO 1989011378 A1 WO1989011378 A1 WO 1989011378A1 FI 8900096 W FI8900096 W FI 8900096W WO 8911378 A1 WO8911378 A1 WO 8911378A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas
container
elements
outlet
discharge apparatus
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.)
Ceased
Application number
PCT/FI1989/000096
Other languages
English (en)
Inventor
Jan-Peter BJÖRKLUND
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.)
Partek Oy AB
Original Assignee
Partek Oy AB
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 Partek Oy AB filed Critical Partek Oy AB
Priority to AT89906122T priority Critical patent/ATE97380T1/de
Priority to DE89906122T priority patent/DE68910819T2/de
Publication of WO1989011378A1 publication Critical patent/WO1989011378A1/fr
Priority to DK266290A priority patent/DK171178B1/da
Priority to NO905072A priority patent/NO172932C/no
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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 present invention relates to a discharge apparatus for a funnel-shaped container with an outlet at its narrow end.
  • Bridging is a frequently occurring problem in the discharge of various materials from the lower end of funnel-shaped containers, which often form the lower end of a silo but can be open at the top as well.
  • the bridging causes the discharge to be inter ⁇ rupted more or less temporarily.
  • the object of the invention is to provide a new discharge apparatus which enables an uninterrupted even discharge even with powders which are extremely liable to bridging.
  • a typical example is the application of self-distributing floor putty, also known as liquid putty or pump putty, whereby dry powder is discharged from a silo in a continuous water flow.
  • dry powders are so called difficult materials, especially those con ⁇ taining fibres.
  • Dry powder and water has to be mixed into a homogenous mixture which can be pumped. After having been pumped on to a floor surface, the mixture levels off and hardens into a wear-resistant surface layer.
  • the mixing ra- tio between the powder and water should be constantly kept at an accurately defined value, which, in turn, requires that the powder should be discharged very evenly from the silo. It has been very difficult to carry out this process by means of previous discharge apparatuses. Naturally, this is not the only process in which an even discharge of powder or other viscous material is of great importance.
  • the discharge apparatus is mainly characterized in that a number of elements made of a gas-per ⁇ meable material is provided within the container on its wall so as to extend towards the outlet of the container in such a manner that a channel sealed along the edges of the elements is defined between each par ⁇ ticular element and the wall of the container; that this channel is divided into separate sec ⁇ tions by means of transverse partition walls; and that a gas supply conduit provided with a throttle is attached to each separate section.
  • the elements made of a gas-permeable material are preferably arranged to extend at least substan ⁇ tially from the outlet of the funnel-shaped container up to the inlet end of the funnel.
  • Gas can be advantageously supplied to all the channel sections from a common source.
  • the gas supply conduits provided for each channel section can be throttled by means of a throttle plate the throttle • opening of which is chosen so as to suit the proper- ties of the active dry powder.
  • the gas-permeable elements are preferably made of a weldable sheet metal available on the market under the name DYNAP0R1_®, whereby the pores in the sheet metal are preferably directed obliquely downward and towards the outlet of the funnel-shaped container.
  • Other materials for so called fluidised conveying can be used as well.
  • the throttled supply of gas into the separate channel sections between the wall of the container and the elements of gas-permeable material provides an un ⁇ interrupted even discharge of material, also when the material level in the funnel-shaped container is de ⁇ scending, right down to the outlet opening.
  • the invention will be de ⁇ scribed in more detail, with reference to a preferred embodiment shown in the attached drawing.
  • Figure 1 is a longitudinal sectional view of a funnel-shaped container with the apparatus according to the invention, the container forming a bottom at the lower end of a silo.
  • Figure 2 is a cross-sectional view through the upper end of the funnel-shaped silo bottom.
  • Figure 3 is an enlarged partial sectional view of the wall of the silo bottom at an element made of a material permeable to gas.
  • Figure 4 is an enlarged longitudinal sectional view of a gas supply conduit provided with a throttle.
  • Figure 5 is an enlarged partial longitudinal sectional view of the wall of the silo bottom and an element of gas-permeable material.
  • a funnel-shaped, preferably conical container forming the bottom at the lower end of a silo is de ⁇ signated generally by the reference numeral 1; the silo is designated by 17.
  • the conical wall of the container 1 is designated by 2.
  • An outlet 3 is pro ⁇ vided at the lower end of the bottom part 1.
  • a conven ⁇ tional pivotable valve plate (not shown in the draw ⁇ ing) can be provided in the outlet 3.
  • a number of elements 4 is mounted on the inside of the wall 2.
  • the elements are made of a gas-per ⁇ meable material, preferable of a sheet metal available on the market under the name DYHAPORE ⁇ , consisting of a porous metal sheet about 3 mm in thickness and welded up of a close-meshed metal network. Pores 7 in the sheet. Figure 5, are preferably directed obliquely downward towards the outlet 3 of the funnel.
  • the edges of the sheet elements 4 are welded to the wall 2, so that a channel 5 is defined between each sheet element 4 and the wall 2.
  • Two such edge welds 6 are visible in Figure 3; in Figures 1 and 2, these welds are shown by means of dashes.
  • the elements 4 extend from the upper end of the bottom part 1, which can be open at the top as well, down to the outlet 3.
  • the channels 5 are divided into separate sections 9 by means of transverse partition walls 8. The sections are positioned one after another from the top towards the outlet 3.
  • a separate gas supply con ⁇ duit 10 is provided for each channel section 9, the gas being mostly air or nitrogen, for instance.
  • Each supply conduit 10 comprises a throttle 11.
  • the throttle 11 can be formed by means of a throttle plate with a constant throttle opening suited for the properties of the material. 12 desig- nates a rubber hose and 13 a hose clamp. The throttle plate is replaced whenever required.
  • the supply of gas is preferably carried out from a common source the outlet conduit of which is designated with 14. 15 designates the extension of the conduit 14 along the wall of the bottom part 1, and 16 designates annular distribution conduits extending around the bottom part 1 up to each particular channel section 9.
  • Gas trickling out through the elements 4 acti- vates the material in the bottom part 1 so that an un- interrupted even flow is obtained through the outlet 3.
  • the channels 5 are divided into the separate transverse sections 9 and the supply of gas into each section 9 is throttled, the discharge of the material takes place evenly even when the material level in the bottom part 1 is descending.
  • the throttles 11 prevent the gas from "escaping" through the uncovered element portions.
  • the combination of the throttled supply of gas and the provision of the separate channel sections also keeps the consumption of gas at a low level, which is an advantage not only economically but also for the reason that high consumption of gas involves filtering problems with the excess gas to avoid forma ⁇ tion of dust.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)

Abstract

La présente invention se rapporte à un appareil déchargeur pour un récipient en forme d'entonnoir (1) comportant un orifice de sortie (3) au niveau de son extrémité étroite. La présente invention a pour but d'assurer un déchargement régulier d'un matériau pulvérulent particulièrement exposé au risque de formation de pont, jusqu'à ce que le récipient soit vide, ce qu'on obtient en disposant, sur la face interne de la paroi (2) du récipient, des éléments (4) en matériau perméable au gaz et s'étendant en direction de l'orifice de sortie (3), chaque canal défini entre les éléments (4) et la paroi (2) du récipient étant divisé en sections transversales séparées (9) pourvues chacune d'une admission de gaz réduite. Le gaz pénétrant par les éléments active le matériau pulvérulent assurant ainsi un écoulement sortant régulier. Grâce à l'admission de gaz réduite, l'écoulement régulier est continu jusqu'à ce que le récipient (1) soit vide.
PCT/FI1989/000096 1988-05-25 1989-05-24 Appareil dechargeur Ceased WO1989011378A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT89906122T ATE97380T1 (de) 1988-05-25 1989-05-24 Entladungsgeraet.
DE89906122T DE68910819T2 (de) 1988-05-25 1989-05-24 Entladungsgerät.
DK266290A DK171178B1 (da) 1988-05-25 1990-11-06 Udledningsapparat
NO905072A NO172932C (no) 1988-05-25 1990-11-22 Tappeapparat for traktformet beholder

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI882470 1988-05-25
FI882470A FI80430C (sv) 1988-05-25 1988-05-25 Utmatningsanordning

Publications (1)

Publication Number Publication Date
WO1989011378A1 true WO1989011378A1 (fr) 1989-11-30

Family

ID=8526517

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1989/000096 Ceased WO1989011378A1 (fr) 1988-05-25 1989-05-24 Appareil dechargeur

Country Status (6)

Country Link
EP (1) EP0409904B1 (fr)
JP (1) JP2801940B2 (fr)
DE (1) DE68910819T2 (fr)
DK (1) DK171178B1 (fr)
FI (1) FI80430C (fr)
WO (1) WO1989011378A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1371581A1 (fr) 2002-06-12 2003-12-17 Raute Dry Mix Oy Dispositif de fluidisation
DE102008024576B3 (de) * 2008-05-21 2009-10-01 Uhde Gmbh Vorrichtung zum Austragen eines Feststoffes aus einem Behälter
WO2011134594A1 (fr) 2010-04-29 2011-11-03 Uhde Gmbh Cône de déversement
US8646664B2 (en) 2008-03-17 2014-02-11 Thyssenkrupp Uhde Gmbh Method and device for the metered removal of a fine to coarse-grained solid matter or solid matter mixture from a storage container
US10228077B2 (en) 2017-03-15 2019-03-12 The Young Industries, Inc. Fluidizing butterfly valve, and system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI96297C (fi) * 1993-06-24 1996-06-10 Raute Precision Oy Laitteisto jauhemaisen aineen annostukseen säiliöstä
FI118214B (fi) * 2005-12-30 2007-08-31 Lahti Prec Oy Laitteisto jauhemaisen aineen gravimetriseen annostukseen säiliöstä

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2723054A (en) * 1951-10-04 1955-11-08 Nat Lead Co Feeders
DE1506977A1 (de) * 1967-06-20 1970-02-05 Moeller Johannes Fa Verfahren zur Auflockerung des in einem Silo gelagerten feinkoernigen Gutes zum Zwecke der besseren Entleerung durch Einblasen von Luft
US3645583A (en) * 1970-04-09 1972-02-29 Calvin P Heath Apparatus and method for handling finely divided solids
US3713564A (en) * 1971-06-25 1973-01-30 Butler Manufacturing Co Method and means for facilitating the flow of granular materials
SE452875B (sv) * 1984-04-26 1987-12-21 Hans E Eriksson Anordning vid behallare med pneumatisk panelaktivator

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5628815A (en) * 1979-08-16 1981-03-23 Toshiba Corp Method of forming photodiffusion-roughened surface

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2723054A (en) * 1951-10-04 1955-11-08 Nat Lead Co Feeders
DE1506977A1 (de) * 1967-06-20 1970-02-05 Moeller Johannes Fa Verfahren zur Auflockerung des in einem Silo gelagerten feinkoernigen Gutes zum Zwecke der besseren Entleerung durch Einblasen von Luft
US3645583A (en) * 1970-04-09 1972-02-29 Calvin P Heath Apparatus and method for handling finely divided solids
US3713564A (en) * 1971-06-25 1973-01-30 Butler Manufacturing Co Method and means for facilitating the flow of granular materials
SE452875B (sv) * 1984-04-26 1987-12-21 Hans E Eriksson Anordning vid behallare med pneumatisk panelaktivator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1371581A1 (fr) 2002-06-12 2003-12-17 Raute Dry Mix Oy Dispositif de fluidisation
US8646664B2 (en) 2008-03-17 2014-02-11 Thyssenkrupp Uhde Gmbh Method and device for the metered removal of a fine to coarse-grained solid matter or solid matter mixture from a storage container
DE102008024576B3 (de) * 2008-05-21 2009-10-01 Uhde Gmbh Vorrichtung zum Austragen eines Feststoffes aus einem Behälter
WO2009141063A1 (fr) 2008-05-21 2009-11-26 Uhde Gmbh Dispositif pour décharger une matière solide d'un réservoir
WO2011134594A1 (fr) 2010-04-29 2011-11-03 Uhde Gmbh Cône de déversement
DE102010018841A1 (de) 2010-04-29 2011-11-03 Uhde Gmbh Austragskonus
US10228077B2 (en) 2017-03-15 2019-03-12 The Young Industries, Inc. Fluidizing butterfly valve, and system

Also Published As

Publication number Publication date
DK266290D0 (da) 1990-11-06
DK171178B1 (da) 1996-07-15
EP0409904A1 (fr) 1991-01-30
DE68910819D1 (de) 1993-12-23
FI80430B (fi) 1990-02-28
FI882470L (fi) 1989-11-26
JPH03504483A (ja) 1991-10-03
FI882470A0 (fi) 1988-05-25
DE68910819T2 (de) 1994-03-17
DK266290A (da) 1990-11-06
FI80430C (sv) 1990-06-11
EP0409904B1 (fr) 1993-11-18
JP2801940B2 (ja) 1998-09-21

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