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EP0051032A1 - Behälter zum Lagern pulverförmiger Materialien - Google Patents

Behälter zum Lagern pulverförmiger Materialien Download PDF

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Publication number
EP0051032A1
EP0051032A1 EP81401677A EP81401677A EP0051032A1 EP 0051032 A1 EP0051032 A1 EP 0051032A1 EP 81401677 A EP81401677 A EP 81401677A EP 81401677 A EP81401677 A EP 81401677A EP 0051032 A1 EP0051032 A1 EP 0051032A1
Authority
EP
European Patent Office
Prior art keywords
floor
evacuation
silo
passages
base
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
EP81401677A
Other languages
English (en)
French (fr)
Inventor
Bernard Fougea
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.)
Coignet SA
Original Assignee
Coignet SA
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 Coignet SA filed Critical Coignet SA
Publication of EP0051032A1 publication Critical patent/EP0051032A1/de
Ceased 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
    • B65D88/26—Hoppers, i.e. containers having funnel-shaped discharge sections
    • B65D88/28—Construction or shape of discharge section
    • 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
    • B65D88/26—Hoppers, i.e. containers having funnel-shaped discharge sections
    • B65D88/32—Hoppers, i.e. containers having funnel-shaped discharge sections in multiple arrangement

Definitions

  • the present invention relates, in general to silos intended for the storage of powdery materials, comprising at least one skirt extending vertically and resting on a horizontal flat floor, said skirt forming a storage cell.
  • Such silos comprise, in known manner, means capable of allowing the evacuation of the stored product, these means being generally arranged in the lower part of the silo.
  • the means provided for ensuring the evacuation of the stored product can be classified into two categories, namely, the means capable of ensuring evacuation called for convenience "forced”, and the means capable of ensuring evacuation by "gravity”.
  • the floor comprises a series of channels in communication with a peripheral channel connected to a pneumatic source, the bottom also comprising a series of radial reinforcing cores.
  • the evacuation is also carried out by a central evacuation and we find the same disadvantages than those cited with regard to the aforementioned document; moreover it is understood that the realization of a multiplicity of channels with blowing orifices leads to an embodiment which is not free from difficulties of all kinds from which it results in a high cost price.
  • the pulverulent material discharged through the passages and the valves is taken up by conveyor means such as conveyor belts provided under the floor and from which it can be transported outside the limits of the silo by all appropriate means.
  • a drawback observed in silos of the above kind concerns the emptying of the pulverulent material; indeed, the emptying being carried out by gravity, and the floor being flat, there remains in the bottom of the silo a certain quantity of pulverulent material more or less important, depending on whether the material tends to clot, which implies personnel interventions inside the storage cell, to completely empty the silo.
  • the present invention relates more particularly to the silos of the second category, that is to say those in which the bottom of the cell is arranged to ensure the evacuation of the product by gravity; its object is a silo whose configuration of the lower part makes it possible to eliminate the drawbacks hitherto observed in this type of silo and this, with an easy implementation from where it results in lowered construction costs.
  • a silo of the type comprising at least one storage cell constituted by a vertical skirt whose bottom consists of a horizontal floor resting on support means, the floor comprising a multiplicity of clean passages to the evacuation of the stored pulverulent material, in association with valves capable of delivering the pulverulent material to conveyor means, is characterized in that it comprises a monobloc base adapted to jointly form a floor, support means, and galleries with radiating axes each capable of receiving a conveyor in order to transfer the pulverulent material outside the limits of the silo, and in that the upper face of the floor comprises on the one hand, in its center a cone of revolution s' extending upward being axial to the skirt, and on the other hand, a series of dihedrons having their radiating intersection lines and inclined up and down starting from the skirt towards its axis.
  • the faces of two consecutive dihedrons form between them, a corridor whose flat bottom, constituted by the floor comprises evacuation passages, while the cone of revolution is surrounded at its base with a crown with evacuation passages, the said passages made both in the bottoms of the corridors and in the crown being located directly above radiating galleries provided under the floor.
  • the arrangement of dihedrons, forming between them radial corridors with bottoms comprising a plurality of passages, and of the cone of revolution with its crown also comprising passages, all these passages being located directly above transport means arranged in corresponding galleries, means that the stored product can be evacuated from the silo without any external intervention.
  • a silo according to the invention can be produced with a single skirt forming a storage cell, or with two concentric skirts forming two storage cells, each of said cells having its own means for discharging the product;
  • the so-called interior cell comprises for this purpose a conical surface of revolution whose base is surrounded by a crown with evacuation orifices, while the annular cell called the exterior, comprises a plurality of dihedrons with lines of radiating intersection, with, between these, evacuation corridors whose base has a constant width, each of the bases comprising a plurality of evacuation orifices, the evacuation orifices of said cells opening into the galleries.
  • the silo comprises a solid circular base indicated generally at 10 surmounted by two concentric skirts 11, 12, forming two storage cells respectively interior 13, and exterior 14, this the latter being annular.
  • the base 10 forms a floor 10A common to the cells, the floor of the interior cell 13 being arranged with, in its center, a conical surface of revolution 15 extending upwards; between the base of this conical surface of revolution and the lower end of the skirt 12 is formed a circular crown 16 in which are formed evacuation passages 17 ( Figures 2 and 3) distributed along a circumference and suitably arranged as well as it will be specified in the following.
  • the outer cell 14 comprises in its lower part a series of dihedrons indicated generally by 20, having two inclined faces 20A-20B, (FIG. 5 in particular), forming a radial intersection edge 20C inclined with respect to a horizontal plane, the inclination of this edge being, starting from the skirt 11 from the top to the bottom.
  • the facing faces of two consecutive dihedrons provide an evacuation corridor 21 (FIG. 5 in particular ) whose bottom 21A - formed in fact by the upper surface of the flat floor 10A. - has a constant width, with a radiating axis and, on either side of this axis, a series of evacuation passages 25.
  • evacuation passages 17 provided in the crown 16 are located in the extension of the evacuation passages 25 formed in the bottom 21A of the aforementioned corridors 21.
  • the evacuation passages 17 and 25, formed in the floor 10A, have a frustoconical surface whose large base forms an orifice in the upper surface of the floor and the small base an orifice in the lower surface of the floor.
  • each of the cells 13, 14 therefore has its own means for discharging the product (conical surface and dihedrons) capable of directing the material towards the evacuation passages, thus allowing complete emptying of the silo.
  • the base 10 comprises support means constituted by vertical walls 30, forming between them a plurality of galleries 32 (FIG. 4), arranged directly above the evacuation passages 17 and 25, each gallery thus formed opening on the one hand, on the outside and, on the other hand, in a central chamber 33.
  • conveyor means such as conveyor belts indicated in broken lines by 35, these being placed in such a way that they lie directly above the evacuation passages 17, provided for this purpose in the crown 16, and evacuation passages 25 provided in the flat bottom of the corridors 21.
  • the base can be reinforced by filling with concrete as indicated at 40 in FIG. 1.
  • the base 10 comprises a sole 41 forming foundations for the construction, this sole advantageously forming an integral part of the base.
  • the silo usually comprises a compartment 43 formed by two horizontal walls 44, 45, the latter comprising openings 46 suitable for admitting the pulverulent material to be stored in the interior and exterior cells 13, 14.
  • Such a base structure made of concrete offers the advantage of a simple and rapid production, at the same time as it allows an easy emptying of the two cells and a practical transfer of the material outside the limits of the silo.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
EP81401677A 1980-10-27 1981-10-23 Behälter zum Lagern pulverförmiger Materialien Ceased EP0051032A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8022911 1980-10-27
FR8022911A FR2492779A1 (fr) 1980-10-27 1980-10-27 Silo pour le stockage de matieres pulverulentes

Publications (1)

Publication Number Publication Date
EP0051032A1 true EP0051032A1 (de) 1982-05-05

Family

ID=9247335

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81401677A Ceased EP0051032A1 (de) 1980-10-27 1981-10-23 Behälter zum Lagern pulverförmiger Materialien

Country Status (2)

Country Link
EP (1) EP0051032A1 (de)
FR (1) FR2492779A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE934158C (de) * 1953-06-13 1955-10-13 Peter Noecker Anordnung von Speicherbehaeltern, insbesondere fuer klassifiziertes Schuettgut
DE1082188B (de) * 1956-06-06 1960-05-19 Schenck Gmbh Carl Bunker fuer schwer fliessendes Schuettgut
FR2395929A1 (fr) * 1977-06-28 1979-01-26 Degrolard Philippe Dispositif permettant la vidange pneumatique complete d'une enceinte de stockage a fond plat contenant des produits granuleux

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE934158C (de) * 1953-06-13 1955-10-13 Peter Noecker Anordnung von Speicherbehaeltern, insbesondere fuer klassifiziertes Schuettgut
DE1082188B (de) * 1956-06-06 1960-05-19 Schenck Gmbh Carl Bunker fuer schwer fliessendes Schuettgut
FR2395929A1 (fr) * 1977-06-28 1979-01-26 Degrolard Philippe Dispositif permettant la vidange pneumatique complete d'une enceinte de stockage a fond plat contenant des produits granuleux

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
AUFBEREITUNGS-TECHNIK, vol. 17, no. 11, 1976, DE Verlag für Aufbereitung Schirmer & Zeh., WIESBADEN (DE) W. KLUGER: "Beladeanlagen für mehlförmige Schüttgüter", pages 557-562 *

Also Published As

Publication number Publication date
FR2492779A1 (fr) 1982-04-30

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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

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AK Designated contracting states

Designated state(s): BE DE IT LU NL

17P Request for examination filed

Effective date: 19820628

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

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18R Application refused

Effective date: 19841006

RIN1 Information on inventor provided before grant (corrected)

Inventor name: FOUGEA, BERNARD