EP0952094A2 - Silo - Google Patents

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Publication number
EP0952094A2
EP0952094A2 EP99303024A EP99303024A EP0952094A2 EP 0952094 A2 EP0952094 A2 EP 0952094A2 EP 99303024 A EP99303024 A EP 99303024A EP 99303024 A EP99303024 A EP 99303024A EP 0952094 A2 EP0952094 A2 EP 0952094A2
Authority
EP
European Patent Office
Prior art keywords
partial
fillet
storage bin
bin
fillets
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Withdrawn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
EP99303024A
Other languages
German (de)
English (en)
Other versions
EP0952094A3 (fr
Inventor
Stephen Frederick Box
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.)
Carier Bulk Materials Handling Ltd
Original Assignee
Carier Bulk Materials Handling Ltd
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 Carier Bulk Materials Handling Ltd filed Critical Carier Bulk Materials Handling Ltd
Publication of EP0952094A2 publication Critical patent/EP0952094A2/fr
Publication of EP0952094A3 publication Critical patent/EP0952094A3/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Withdrawn legal-status Critical Current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
    • B65D88/00—Large containers
    • B65D88/26—Hoppers, i.e. containers having funnel-shaped discharge sections

Definitions

  • the present invention relates to a storage bin having particular, but not exclusive, application to the storage of powdered foodstuffs such as flour.
  • Figure 1 of the accompanying drawings shows a section through a corner of one such bin.
  • Two adjoining walls 10,12 are connected together via an angled section 14 and secured by a number of bolts 16,18. It is not acceptable from a hygiene point of view for the heads of the bolts 16,18 and the junction of the walls 10,12 with the section 14 to be open to the inside of the bin. These could lead to a build-up of material with a consequent threat of infestation.
  • the Confused Flour Beetle in particular, is capable of living and breeding in minute crevices such as uneven weld profiles.
  • FIG. 2 An alternative construction is shown in accompanying Figure 2 in which one wall 30 is flanged to be joined to the adjacent wall 32 by a number of bolts 34.
  • the bolt heads and join between the walls are concealed by a fillet 36 which is welded 38, 40 into position after assembly.
  • these welds must be ground down.
  • eight welding and grinding operations are required along the full height of the bin.
  • a storage bin as set out in accompanying Claim 1.
  • each wall member is provided with a partial fillet or wing flange section that extends along the height of the wall. In a square or rectangular bin these will typically extend at 45° from the inner face of the wall although other angles are possible.
  • a single on-site weld is required at each corner of the bin.
  • the two partial fillets abut to provide a substantially planar surface. This makes the post-weld grinding operation considerably more straightforward than that required using the technique of Figure 2.
  • Each partial fillet may preferably be 175 mm wide to prevent hang-up in flour and to facilitate the grinding step.
  • the wall members may be of a twin-skin construction in which the outer face is provided on a separate skin. This eliminates ledges and the like on the outside of the bin (often inaccessible from below) that are commonplace in prior art bins and which often contribute to hygiene problems.
  • the additional cost of the outer skin can be offset to some degree by arranging a number of storage bins together in which the outer skin of one bin is the inner skin of the adjacent bin. In this way a row (or even a matrix) of bins may be constructed together.
  • the additional load-bearing requirements must clearly be taken into account.
  • a backing plate is provided to be mounted between adjoining partial fillets. This can be riveted in place prior to welding.
  • the heads of blind rivets are sufficiently unobtrusive to remain on the inner face of the bin after construction.
  • the partial fillets may be provided by using a continuous shop-laid weld. Such a weld does not require subsequent grinding because of its consistent nature.
  • a hopper is provided on such a storage bin.
  • such a hopper is arranged to have fillet sections between wall members so that the top of the hopper is contiguous with the bottom of the bin.
  • Closures for top and bottom of the bin can be of any known suitable type.
  • the storage bin is preferably constructed to comply with the draft Eurocode DD ENV 1991-4:1996 and entitled “Eurocode 1: Basis of Design and Actions on Structures. The relevant section is part 4, entitled “Actions in Silos and Tanks”.
  • a storage bin constructed in accordance with the present invention can readily be made to comply with the hygiene requirements of the industry.
  • the present invention also comprises a method of assembling such a kit as set out in accompanying Claim 14.
  • FIG 3 shows four double-skinned wall members 50,52,54,56 of a storage bin in accordance with an embodiment of the invention.
  • a hopper section is shown generally at 58 and will be described in greater detail with reference to Figures 5,6 and 7.
  • the walls are joined by fillet sections 60,61,62,63,64,65,66,67 and backing plates 71,73,75,77 as will be described in more detail below.
  • the wall member 56 is shared with an adjacent storage bin of similar construction. This structure could be repeated to provide a row or "terrace" of storage bins.
  • FIG 4 shows a cross section through one corner of the bin shown in Figure 3.
  • Wall member 50 includes a partial fillet or wing flange 60 which is welded by a shop-laid weld 84 to the inner skin 150. This weld needs no post-weld grinding to comply with hygiene requirements.
  • Wall member 52 similarly includes partial fillet 63 welded at 86.
  • Each wall includes further box sections 80,82 to be discussed further with reference to Figure 5 below.
  • Each partial fillet extends substantially 175mm from the respective inner skin at an angle of substantially 45°. They are joined together by a backing plate 71 to which they are both riveted at 600mm intervals in the vertical direction (perpendicular to page) using dome head blind rivets 90,92.
  • the gap between the partial fillets is then filled with an on-site weld 100. This is then ground down to provide acceptable levels of smoothness for the particular application. Note that no bolting is required and only one on-site weld is required for each corner.
  • the volume behind the backing plate 71 is also completely accessible. Thus, it can be cleaned and fumigated or filled with an insert, non-toxic material such as concrete.
  • corner fillets of 350mm but at least 100 mm in width eliminate all possibilities of "hang-up" which is otherwise common in silos or storage bins having square corners.
  • Such a bin may typically be 25m high and 4.5m square in section to store approximately 300 tonnes of flour or 390 tonnes of wheat.
  • Figure 5 shows part the corner of Figure 4 in perspective view. Further rivets 90',92', 90" and 92" are shown along a portion of the corner.
  • the box sections 80,82 of the wall members 50,52 can also be seen in their entirety, as can the inner skin 152 and the outer skin 252 of the wall member 52. Corresponding features are provided on the other wall members.
  • the inner skin 152 and outer skin 252 are joined by a number of box sections 352 although other techniques could be employed.
  • a hopper 58 includes, inter alia, a fillet section 158 shown in more detail in Figure 7.
  • While the perspective view shows the top of the skins 152 and 252 as open to show the internal detail, they are covered in practice so as to not provide a volume in which infestation can occur.
  • Figure 6 is a view of the elements of Figure 5 prior to on-site construction. The relatively small number of parts for on-site assembly can readily be appreciated.
  • Figure 7 shows a view of the intersection between inner wall faces 150,152; flange sections 60,63; hopper flange section 158; hopper wall sections W1,W2 and lower hopper section 159.
  • the parts 60, 63 and 159 are in the plane of the paper.
  • Parts 150,152 hinge outwards from the plane of the paper at 45° about the weld lines 84,86 respectively.
  • the hopper 58 is joined to the parts 150,152,60,63 by on-site welds 200,202,204.
  • the hopper parts 158,W1,W2 all hinge out of the plane of the paper at 70° around their respective welds 204,202,200.
  • the valley V between the hopper fillet 158 and each hopper wall section W1,W2 is therefore 68.5°, more than adequate to prevent "build-up" in use.
  • the filleted hopper thus "blends into” the tank section of the bin.
  • the hopper is provided in one piece with factory-laid welds.
  • the hopper may be provided in sections, for example with bolted joints on the outside. Secondary cover plates are then placed over the bolted joints and, after riveting, welded in place. The inner joint or joints are welded and ground on-site as described above for the wall members of the tank section.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Storage Of Harvested Produce (AREA)
  • Catching Or Destruction (AREA)
EP99303024A 1998-04-20 1999-04-20 Silo Withdrawn EP0952094A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9808317 1998-04-20
GB9808317A GB2336620A (en) 1998-04-20 1998-04-20 Storage bin

Publications (2)

Publication Number Publication Date
EP0952094A2 true EP0952094A2 (fr) 1999-10-27
EP0952094A3 EP0952094A3 (fr) 2000-05-31

Family

ID=10830603

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99303024A Withdrawn EP0952094A3 (fr) 1998-04-20 1999-04-20 Silo

Country Status (2)

Country Link
EP (1) EP0952094A3 (fr)
GB (1) GB2336620A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001070596A2 (fr) * 2000-03-20 2001-09-27 Versatile Container Handling Holdings (Pty) Ltd Conteneur pour transporter des matieres en vrac

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115263062B (zh) * 2022-09-28 2023-01-31 中化二建集团有限公司 法兰组对式铝镁料仓施工方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1021414A (fr) * 1950-06-20 1953-02-18 Silo métallique pour matières granuleuses
DE3007201A1 (de) * 1979-03-07 1980-09-18 Geroldinger Walter Ohg Zellensilo
DE2922915A1 (de) * 1979-06-06 1980-12-11 Steffens Klaus G Eckstuetze fuer zellensilos o.dgl.
FR2701983A1 (fr) * 1993-02-26 1994-09-02 Godin Sa Enceinte formant réservoir ou silo.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0033008A3 (fr) * 1980-01-26 1981-11-04 Industriebau und Wärmetechnik GmbH Silo cellulaire

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1021414A (fr) * 1950-06-20 1953-02-18 Silo métallique pour matières granuleuses
DE3007201A1 (de) * 1979-03-07 1980-09-18 Geroldinger Walter Ohg Zellensilo
DE2922915A1 (de) * 1979-06-06 1980-12-11 Steffens Klaus G Eckstuetze fuer zellensilos o.dgl.
FR2701983A1 (fr) * 1993-02-26 1994-09-02 Godin Sa Enceinte formant réservoir ou silo.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001070596A2 (fr) * 2000-03-20 2001-09-27 Versatile Container Handling Holdings (Pty) Ltd Conteneur pour transporter des matieres en vrac
WO2001070596A3 (fr) * 2000-03-20 2001-12-06 Versatile Container Handling H Conteneur pour transporter des matieres en vrac

Also Published As

Publication number Publication date
GB9808317D0 (en) 1998-06-17
GB2336620A (en) 1999-10-27
EP0952094A3 (fr) 2000-05-31

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