[go: up one dir, main page]

EP0464665B1 - Conteneur à matières en vrac - Google Patents

Conteneur à matières en vrac Download PDF

Info

Publication number
EP0464665B1
EP0464665B1 EP91110649A EP91110649A EP0464665B1 EP 0464665 B1 EP0464665 B1 EP 0464665B1 EP 91110649 A EP91110649 A EP 91110649A EP 91110649 A EP91110649 A EP 91110649A EP 0464665 B1 EP0464665 B1 EP 0464665B1
Authority
EP
European Patent Office
Prior art keywords
air
outlet
fibre
silo
layer
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.)
Expired - Lifetime
Application number
EP91110649A
Other languages
German (de)
English (en)
Other versions
EP0464665A1 (fr
Inventor
Adolf Dipl.-Ing. Buchfink
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.)
Claudius Peters AG
Original Assignee
Claudius Peters AG
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 Claudius Peters AG filed Critical Claudius Peters AG
Publication of EP0464665A1 publication Critical patent/EP0464665A1/fr
Application granted granted Critical
Publication of EP0464665B1 publication Critical patent/EP0464665B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

  • Bulk goods silo the bottom of which comprises an air-permeable fiber layer for the finely distributed passage of air from a compressed air supply chamber arranged below it into the silo space above, in order to make at least one bulk material layer lying directly on the floor flowable in such a way that it becomes a pressure release location (e.g. an outlet opening ) is able to move.
  • a pressure release location e.g. an outlet opening
  • the amount of gas per unit area passing through the ventilation device of a silo floor depends on the pressure in the air supply chamber located under the ventilation floor, on the throttle resistance of the ventilation floor and on the counter pressure.
  • the back pressure is determined by the resistance that the air that has passed into the silo space or the bulk material fluidized by this air finds on the way to the next relaxation location. This resistance depends on the distance to the place of relaxation. If the point of relaxation is formed by the silo outlet or an outlet chamber, this resistance for the material in floor areas remote from the outlet is substantially greater than for those closer to the outlet.
  • the object of the invention is therefore to create a bulk material silo in which the air-permeable fiber layer has an increase in the flow resistance towards the outlet opening.
  • the solution according to the invention is that the width of the fiber interspaces of the air-permeable fiber layer, which determines the flow resistance, decreases along the path of the good movement to the relaxation location.
  • this is accomplished by having a given air-permeable fiber layer the spaces between the fibers are narrowed differently in some areas, in such a way that this has a permanent character. If the fiber layer consists of thermoplastic material or contains thermoplastic material, this can be done by heat treatment with or without compression, the different narrowing being achieved by the confluence of the fibers and / or different compression.
  • the fiber interstices that are available for the passage of the loosening gas are partially filled to different degrees, preferably by introducing an impregnation, i.e. of a substance that can be introduced in the liquid state, solidifies on the spot and then closes a more or less large proportion of the pore cross section.
  • an impregnation i.e. of a substance that can be introduced in the liquid state
  • fine-grained or dust-like solid can also be introduced, which partially clogs the pores.
  • the narrowing of the fiber interspaces does not need to cover the entire thickness of the fiber layer in order for the desired throttling effect to be achieved. Since the techniques explained above require a very fine grading of the pressing pressure or the pressing temperatures or the amount of substance to be introduced, and since it can be easier to achieve a high degree of sealing in places instead, a further variant of the invention provides that the fiber layer has small, contains completely or to a large extent closed positions and the proportion of these positions is different in some areas, while the surface areas surrounding these locations remain unaffected and therefore have the same flow resistance per unit area in different areas.
  • the closed places can have a geometrically regular or irregular shape.
  • a large number of very small pressing points can be distributed over the surface of the fiber layer, in which the interstices between the fibers are closed or reduced by hot pressing.
  • the different proportion of these points in the total area can be varied by varying their density or their size. They can be completely separate from one another or can also combine to form strips. Particularly advantageous is the shape of fine strips which lead in the direction of the outlet and whose width increases towards the outlet and / or whose distance from the outlet decreases. It is not necessary for the pore cross section to be completely closed in these places. However, it should be reduced at least as much as is desirable for the total area in the areas closest to the outlet.
  • the floor of a silo room 1 is formed above the load-bearing concrete floor 2 by a ventilation device which consists of so-called ventilation boxes which contain an air supply space 3 below an air-permeable layer 4.
  • a ventilation device which consists of so-called ventilation boxes which contain an air supply space 3 below an air-permeable layer 4.
  • this has a fiber layer 4, for example a nonwoven or woven fabric made of polyester fibers.
  • Compressed air can be supplied to the air supply space 3 from a blower (not shown) via the line 5. It penetrates through the air-permeable layer 4 into the silo space, finely distributed.
  • the bulk material stored in the silo near the floor is either aerated over the entire floor area or partially in one or more floor sections and thus brought into a liquid-like state.
  • the loosening air is to be supplied to the discharge areas 7 at a higher pressure than the discharge areas 8.
  • the invention has recognized that it depends on the pressure above the air-permeable layer 4, and therefore sees a different throttling of the air within the air-permeable layer 4 before.
  • the air-permeable layer 4 is designed in such a way that the flow resistance, indicated by the arrows 10, is correspondingly greater in the area 8 near the outlet than in the area 7 remote from the outlet.
  • the flow resistance increases continuously from the outside to the inside, so that no pressure gradations are formed. which can give rise to undesirable phenomena. In many cases, however, a gradual change in the flow resistance along the material path to the outlet is sufficient.
  • thermoplastic fabric for example polyester fabric
  • the air-permeable layer is subjected to a treatment which closes or constricts a part of the fabric interstices.
  • a bridge 13 running on rails 12 is provided above a row of tissue webs 11 to be treated, which bridge is equipped with spray nozzles 14 (left illustration) or a radiant heater 15 (right illustration) and with variable feed above the webs 11 in their Is movable in the longitudinal direction.
  • the spray nozzles spray an impregnating agent with constant power, which after drying in the fabric 11 more or less closes its pores depending on the application thickness.
  • the radiant heater 15 softens the thermoplastic fibers and thereby causes them to partially flow together, likewise with the effect of narrowing the flow cross-sections. In both cases, the extent of the effect depends on the duration of exposure and thus on the feed rate.
  • the air permeability of the fabric 11 can thus be adjusted by suitably controlling the feed rate of the bridge. For example, the treatment can be started with a high feed rate at one end of the webs 11 or within the end at a certain distance therefrom in order to end at the other end with a low feed rate.
  • the web is provided with a pattern of densified points of increased flow resistance.
  • 3 in the form of strips 16 which run in the longitudinal direction, in the example of FIG. 4 they are formed as points 17.
  • these strips retain a minimum permeability which corresponds to the value desired in the vicinity of the outlet, so that the area 8 near the outlet is covered 100% with densified areas, while the density in the other areas is correspondingly lower.
  • the points 17 have almost no air permeability, but they are so small and are so far apart from one another that a sufficiently uniform air distribution is nevertheless achieved.
  • a discontinuous increase in the flow resistance is provided in a total of five fields. Such a gradation is sufficiently close to the ideal of continuous change in many cases. There may be cases in which it is even sufficient to arrange only two zones of different flow resistance one behind the other on the way to the outlet.
  • the increase in flow resistance can be linear from outside to inside. A disproportionate increase is generally preferred. Suitable values can easily be determined by experiment on a case-by-case basis.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Building Environments (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Claims (4)

  1. Silo à matières en vrac, dont le fond comporte une couche de fibres (4) perméable à l'air pour le passage finement réparti d'air entre une chambre (3) d'alimentation en air comprimé disposée au-dessous et la chambre du silo (1) qui se trouve au-dessus, afin de fluidiser au moins une couche de matières en vrac reposant directement sur le fond, de sorte qu'elle soit en mesure de se déplacer vers un point de détente de la pression (par exemple un orifice de sortie 6), caractérisé en ce que la largeur des intervalles entre fibres de la couche de fibres (4) perméable à l'air, qui détermine la résistance au passage du courant (10), décroît le long du trajet de cheminement de la matière vers le point de détente (6).
  2. Dispositif d'aérage selon la revendication 1, caractérisé en ce que les intervalles entre fibres de la couche de fibres sont remplis à des degrés différents par zones.
  3. Dispositif d'aérage selon la revendication 2, caractérisé en ce que les intervalles entre fibres contiennent une imprégnation.
  4. Dispositif d'aérage selon la revendication 1, caractérisé en ce que la couche continue de fibres est compactée de manière durable dans des mesures différentes par zones.
EP91110649A 1990-07-02 1991-06-27 Conteneur à matières en vrac Expired - Lifetime EP0464665B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9010061U DE9010061U1 (de) 1990-07-02 1990-07-02 Belüftungsgewebe
DE9010061U 1990-07-02

Publications (2)

Publication Number Publication Date
EP0464665A1 EP0464665A1 (fr) 1992-01-08
EP0464665B1 true EP0464665B1 (fr) 1994-09-21

Family

ID=6855215

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91110649A Expired - Lifetime EP0464665B1 (fr) 1990-07-02 1991-06-27 Conteneur à matières en vrac

Country Status (4)

Country Link
US (1) US5224312A (fr)
EP (1) EP0464665B1 (fr)
DE (2) DE9010061U1 (fr)
ES (1) ES2064007T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE512659C2 (sv) * 1997-12-29 2000-04-17 Pm Luft Sätt att tömma lagringsutrymme för bulkgods, t ex spannmål och tömningstransportör därtill

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7235359U (de) * 1972-12-14 Polysius Ag Behälterboden zum pneumatischen Mischen und Austragen von Feingut
US2560141A (en) * 1948-06-21 1951-07-10 James F Tipps Means for cooling and drying grain and seed
FR1035003A (fr) * 1951-04-03 1953-08-12 Perfectionnements aux moyens d'aération et de transport de matériaux pulvérulentset granuleux
FR1035001A (fr) * 1951-04-03 1953-08-12 Perfectionnements aux aérateurs et transporteurs pour matériaux pulvérulents et granuleux
GB854866A (en) * 1957-12-17 1960-11-23 Mono Pumps Ltd Container for powdered material
DE1918190U (de) * 1963-05-22 1965-06-16 Kaessbohrer Fahrzeug Karl Fahrzeug zum transportieren von schuettgut.
DE1934074U (de) * 1965-12-21 1966-03-03 Werner & Pfleiderer Speicher oder foerderelement mit luftdurchlaessigen leit- oder trennwaenden fuer pulverfoermige stoffe.
US3426445A (en) * 1966-08-22 1969-02-11 Vincent B Steffen Base for steel storage bin
DE1274990B (de) * 1967-09-12 1968-08-08 Ludwig Spitzer Sen K G Auslauf fuer pneumatisch entleerbare Schuettgutbehaelter
DE1918190A1 (de) * 1969-04-10 1970-10-15 Franz Schlueter Hoch Tief U Be Druckmittelbetriebenes verfahrbares Arbeitsgeraet der Foerder- und Gewinnungstechnik,insbesondere Ladegeraet fuer den Bergbau
DE2223616A1 (de) * 1972-05-15 1973-11-29 Hans-Joachim Dipl-Ing Selig Wandanliegender belueftungskoerper fuer konen in schuettgutsilos
US4281489A (en) * 1979-09-24 1981-08-04 Continental Agri-Services, Inc. Floor support for grain drying and storage bin
US4604842A (en) * 1985-02-28 1986-08-12 Sukup Eugene G Drying bin floor
DE3523863A1 (de) * 1985-07-04 1987-01-15 Fritzen Gmbh & Co H & W Silo fuer eine belueftungstrocknung von getreide
DE8700943U1 (de) * 1987-01-02 1987-04-09 Grünewald, Ralph, 6957 Elztal Silo-Standbehälter mit einer flexiblen Bodenfolie
DE8709331U1 (de) * 1987-07-07 1987-11-12 A.B.S. Silo und Förderanlagen GmbH, 6960 Osterburken Gasdurchlässiger Lockerungsboden als Austragshilfe in Bunkern oder Silos aus Folie

Also Published As

Publication number Publication date
ES2064007T3 (es) 1995-01-16
DE9010061U1 (de) 1991-12-05
EP0464665A1 (fr) 1992-01-08
US5224312A (en) 1993-07-06
DE59103012D1 (de) 1994-10-27

Similar Documents

Publication Publication Date Title
DE69208358T2 (de) Vorrichtung zur gleichmässigen Verteilung von Gas und/oder Flüssigkeit in einem seitlichen Unterdrainagesystem
DE3131545C2 (de) Vorrichtung zum Auftragen von Schaum
EP0085729A1 (fr) Procédé et appareil pour revêtir un substrat avec un matériau très absorbant, en particulier un article hygiénique
DE2013244B2 (de) Luftzuführungseinrichtung zur Injektion von vorzugsweise kalter Ventilationsluft
DE9016445U1 (de) Erste-Hilfe-Verband
DE2703680C3 (de) Auftragsvorrichtung für fließfähige, aufschäumende Reaktionsmasse
DE2106394A1 (de) Luftversorgungsvorrichtung zum Einblasen von vorzugsweise kalter Ventilationsluft
DE2320614A1 (de) Vorrichtung zur behandlung von materialien im fliessbett mit waagerechter zirkulation
DE2303503A1 (de) Vorrichtung zum trocknen
DE2351178A1 (de) Beschichtungsvorrichtung
DE3346857C2 (fr)
EP0464665B1 (fr) Conteneur à matières en vrac
DE60317018T2 (de) Auftragsvorrichtung für Flüssigkeiten
DE2053780A1 (de) Vorrichtung zum Steuern des Entwässerns einer Suspension von Partikeln, wie Fasern, für die Bildung einer Stoff- oder Vliesschicht
DE3022346A1 (de) Mischsilo fuer schuettgut
DE4039313A1 (de) Transportvorrichtung fuer substrate
DE2812219C2 (fr)
DE3906070A1 (de) Verfahren und vorrichtung zum beschichten eines bahnmaterials mit einer klebstoffloesung und anwendung
DE69402687T2 (de) Wandelement mit ventilationsdurchgängen
DE7503063U (de) Vollschaum-matratzenkern
DE2023580A1 (de) Vorrichtung zum Fluidisieren von Teilchenmaterial
DE2942528A1 (de) Vorrichtung zum herstellen und auftragen von schaum auf bahnfoermiges gut
DE69907401T2 (de) Vorrichtung zum verteilen von teig
DE965263C (de) Verdampfer fuer Luftverbesserung
DE2534430C2 (de) Wasseraufbereitungseinrichtung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT

17P Request for examination filed

Effective date: 19920406

17Q First examination report despatched

Effective date: 19931126

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

REF Corresponds to:

Ref document number: 59103012

Country of ref document: DE

Date of ref document: 19941027

ITF It: translation for a ep patent filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2064007

Country of ref document: ES

Kind code of ref document: T3

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19941222

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19950612

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19950619

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19950630

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19960627

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 19960628

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19960627

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19970228

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20000601

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20030821

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050627