US3350995A - Silo having a plurality of bins therein - Google Patents

Silo having a plurality of bins therein Download PDF

Info

Publication number
US3350995A
US3350995A US501709A US50170965A US3350995A US 3350995 A US3350995 A US 3350995A US 501709 A US501709 A US 501709A US 50170965 A US50170965 A US 50170965A US 3350995 A US3350995 A US 3350995A
Authority
US
United States
Prior art keywords
silo
bins
wall
ensilaged
walls
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
US501709A
Other languages
English (en)
Inventor
Jeru Henri
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.)
Chantiers de la Seine Maritime
Original Assignee
Chantiers de la Seine Maritime
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 Chantiers de la Seine Maritime filed Critical Chantiers de la Seine Maritime
Application granted granted Critical
Publication of US3350995A publication Critical patent/US3350995A/en
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
    • B65D88/26—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 to arrangements capable of facilitating the emptying of silos and of reducing the pressures to which the latter are subjected by the effect of the ensilaged material.
  • this palliative has the disadvantage of leaving the lower layers of stored material in the silo for an unduly long and theoretically unlimited period, unless complete systematic emptyings of the silo are carried out at regular intervals.
  • silo bins with inclined partition walls, as described for instance in the German Patent No. 543,417, granted on Feb. 5, 1932, and the German Patent No. 666,564, granted on Oct. 24, 1938.
  • Such silos are conducive to a waste of space, or to unequal capacities of bins, or to bins which are placed on top of each other, with service openings situated at a ditterent height for each bin.
  • An object of the present invention is to provide a bank of silo bins formed with inclined partition walls, having the same height and placed level with each other, and capable of being housed within a vertical peripheral wall while using all the space available Within said wall.
  • the invention also contemplates a device capable of facilitating the aeration of the ensilaged material and of etiectively preventing it from deteriorating or clogging.
  • a battery of silo bins having inclined partition walls and distributed around an upright member, and wherein the average lines of fall of the ensilaged material within said bins define winding curves rotating in the same direction about said upright member.
  • Such bins require curved partition walls of a relatively complex shape, and the invention has, as another object, specific methods of construction for producing such partition walls easily and economically, and even for taking advantage of their shape in order to increase their structural strength.
  • FIG. 1 relates to a battery of three silo bins of a known yp
  • FIG. 2 refers to a battery of inclined bins of a known type occupying as a whole a volume defined by four vertical walls, parallel in pairs;
  • FIG. 3 shows diagrammatically a perspective view of a bank or battery of silo bins according to the invention
  • FIG. 4 is a cross-section in plan taken along line IVIV in FIG. 3;
  • FIG. 5 is a cross-section FIG. 3.
  • FIG. 1 there is seen a battery of three silo bins or cells joined side by side, of prismatic shape with parallel inclined rectilinear axes.
  • a force OM representing a certain weight of ensilaged material
  • OP representing taken along line V-V in the reaction absorbed by the lower layers or material.
  • the vector OR is inclined to the normal to the partition 1 because of friction.
  • the vector OR comprises a large vertical component and that the effect of hydrostatic pressure, represented by the vector OP, is reduced accordingly. This has the result of reducing the internal pressures in the lower layers, and especially in the vicinity of the emptying orifices 2.
  • the cell 3 is considered, for example, the pressure of grain or ore is much higher on the partition 1 than on the opposite partition 4, which considerably reduces the possibility of formation of arches in the ensilaged material.
  • the inclined partitions which directly support the weight of the material are more heavily loaded in the upper zones of the cell than would be the case with vertical partitions, but the charge per unit of surface increases less rapidly with the depth than in the case of the vertical cells. This results in a better utilization of the construction material. It is known in fact that in the case of vertical cells, the thickness of the partitions in the upper zones is greater than would be required for resisting the pressures.
  • cells 3 require more space area than vertical cells of equal capacity. They also require additional columns 5.
  • FIG. 2 inclined cells of another known type, which present from the exterior the aspect of a battery of vertical cells.
  • the inclined cells, housed in a vertical parallelepiped have unequal capacities, and some of them require special provisions for loading and discharging, in the shape of chutes 9 and 12.
  • the average lines of fall in the bins define win-ding curves about an upright.
  • These curves may be helices, for ex ample helices with a circular projection, which enables a series of bins to be housed in a circular cylindrical wall and thereby to form a compact unit.
  • FIGS. 3 and 4 a battery of six cells shaped from an outer circular cylindrical wall with a vertical axis, a coaxial upright and service shaft in the form of an internal cylinder 15, and six partitions 16.
  • the outer circular cylindrical wall is fitted at the bottom with a hopper wall converging downwardly toward and extending to the service shaft 15, for leading thereto the ensilaged material from each of the six cells, in a manner well known in the art.
  • Each of these partitions rests on the cylinders 14 and 15 on two respective series of supports, distributed along two respective average lines of support 17 and 18, defining helices of the same pitch on cylinders 14 and 15.
  • the partition 16 is not formed by a true hellcoidal surface, since such a shape is difiicult to produce in practice.
  • the partition 16 can conveniently be formed by fiat sheets 19 made of any convenient material, e.g. steel, and capable of being elastically deformed in order to be supported on and assembled by a convenient means, e.g. welding to said series of supports, which may consist of angle sections 20, 21, fixed to cylinders 14 and 15 along helices 17 and 18.
  • Wedge-shaped packing pieces 20a may be sandwiched between sheets 29 and one of said angle-sections 20, 21, or both of them, to provide for sheets 29 a series of supports arranged in steps, cooperating with flanges 29a for forming ridges on the partition wall faces.
  • the helices 17 are less inclined to the vertical than the helices 18.
  • the anglesection supports such as 20, 21 can be taken as similar, over the length of a sheet 19, to two rectilinear but not coplanar supports. Consequently, the average outlines of the two opposite edges of contact of a sheet 19 with supports 20, 21, define two non-coplanar portions of straight lines when plate 19 is fixed on supports 20, 21. It is thus found that the elastic deformation of the sheets 16, intended to ensure their contact with the supports 20 and 21, produces in these sheets a double curvature, as for a hyperbolic paraboloid, and this has the result of inducing a large increase in strength of these sheets.
  • FIG. 3 shows the average line of fall M of the ensilaged material for one of the bins.
  • Line M defines a winding curve about upright 15, and may be assumed to coincide with the line defined by the centers of gravity of plan sectional areas of the bin at various levels.
  • the angle-sections 20, 21 may be arranged in steps if so desired, or along broken lines as described in applicants co-pending application for Improvements in Methods of Construction.
  • sheets 19 may have flanges 19a for forming ridges on the partition wall faces, as may be seen from FIG. 5, and for producing in the ensilaged material passages having less resistance to air so as to facilitate aeration of the material.
  • FIG. 4 There can be seen in FIG. 4 one of these passages, referenced by 22, and shown in chain-dotted lines.
  • the reference 23 designates an air-supply pipe placed in the cylinder 15 and provided with nozzles 24 so as to blow air into the passages 22.
  • Two suction pipes 25 and 26 provided with orifices protected by hoods 27 draw-in air and force it to pass through the whole ensilaged mass, following the paths indicated by the arrows 28.
  • the outer wall 14 is stiffened on its outer face by helicoidal angle-sections 29 arranged normally to the angleiron supports 19. In fact, as indicated above, a large part of the weight of ensilaged material is directly applied to the inclined partitions and is transmitted to the ground through the intermediary of the outer vertical walls. In consequence, it may be advisable to stiffen these vertical walls in order to prevent them from buckling.
  • a silo having a plurality of bins, the silo consist ing of one outer vertical cylindrical wall, one inner cylindrical wall disposed inside said outer wall coaxially thereto, said inner wall defining within itself one service shaft, said inner and outer walls defining between them an annular space, a hopper wall fitted to the bottom of said outer wall and converging downwardly toward and extending to said inner wall and closing said annular space and leading by gravity to said service shaft a material ensilaged in said annular space for removal of said material from the silo, and helically shaped partitions dividing said annular space into bins.
  • a silo according to claim 1 having supports provided on opposite faces of said inner and outer walls and defining on said walls respective helices of equal pitch, wherein said partitions consist of sheets contacting along two of their opposite edges said supports and fixed thereto.
  • a silo according to claim 1 wherein said supports are arranged in steps on at least one of said opposite faces, while said sheets are formed with a flange along one edge, said flanges cooperating with said step formation to produce ridges on the partition wall faces.
  • a silo according to claim 3 having nozzles for injecting air within a bin along a partition wall face parallel to said ridges.
  • a silo according to claim 4 having air orifices disposed within said bin.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
US501709A 1964-10-27 1965-10-22 Silo having a plurality of bins therein Expired - Lifetime US3350995A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR992801A FR1422187A (fr) 1964-10-27 1964-10-27 Perfectionnements aux silos

Publications (1)

Publication Number Publication Date
US3350995A true US3350995A (en) 1967-11-07

Family

ID=8841163

Family Applications (1)

Application Number Title Priority Date Filing Date
US501709A Expired - Lifetime US3350995A (en) 1964-10-27 1965-10-22 Silo having a plurality of bins therein

Country Status (3)

Country Link
US (1) US3350995A (fr)
FR (1) FR1422187A (fr)
GB (1) GB1117648A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3411215A (en) * 1966-12-08 1968-11-19 Du Pont Apparatus and process for drying particulate polymer
EP0166072A1 (fr) * 1984-02-03 1986-01-02 Lothar Rühland Conteneur pour la collecte de produits ré-utilisables
US7568297B2 (en) * 2006-04-10 2009-08-04 Woodhaven Capital Corp. Grain drying aeration system
US20120230146A1 (en) * 2011-03-11 2012-09-13 Bayer Materialscience Ag Mixing silo
WO2013003185A1 (fr) * 2011-06-30 2013-01-03 Kellogg Brown & Root Llc Agencement d'écoulement massique de trémie à verrouillage

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136407B (en) * 1983-03-12 1988-01-13 Thomas Creighton Mckeown Preventing bridging in hoppers
GB8334162D0 (en) * 1983-12-22 1984-02-01 Rule & Son Ltd G O Storage hopper/silo

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US171290A (en) * 1875-12-21 Improvement in apparatus for storing and preserving grain
US1194118A (en) * 1916-08-08 Dbying appabatus
US2226535A (en) * 1940-04-06 1940-12-31 Socony Vacuum Oil Co Inc Kiln
US2669540A (en) * 1950-04-29 1954-02-16 Houdry Process Corp Processes employing fluent solid particles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US171290A (en) * 1875-12-21 Improvement in apparatus for storing and preserving grain
US1194118A (en) * 1916-08-08 Dbying appabatus
US2226535A (en) * 1940-04-06 1940-12-31 Socony Vacuum Oil Co Inc Kiln
US2669540A (en) * 1950-04-29 1954-02-16 Houdry Process Corp Processes employing fluent solid particles

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3411215A (en) * 1966-12-08 1968-11-19 Du Pont Apparatus and process for drying particulate polymer
EP0166072A1 (fr) * 1984-02-03 1986-01-02 Lothar Rühland Conteneur pour la collecte de produits ré-utilisables
US7568297B2 (en) * 2006-04-10 2009-08-04 Woodhaven Capital Corp. Grain drying aeration system
US20120230146A1 (en) * 2011-03-11 2012-09-13 Bayer Materialscience Ag Mixing silo
US9028132B2 (en) * 2011-03-11 2015-05-12 Bayer Materialscience Ag Mixing silo
WO2013003185A1 (fr) * 2011-06-30 2013-01-03 Kellogg Brown & Root Llc Agencement d'écoulement massique de trémie à verrouillage
US9169062B2 (en) 2011-06-30 2015-10-27 Kellogg Brown & Root Llc Lock hopper mass flow arrangement

Also Published As

Publication number Publication date
GB1117648A (en) 1968-06-19
FR1422187A (fr) 1965-12-24

Similar Documents

Publication Publication Date Title
US3350995A (en) Silo having a plurality of bins therein
GB1155116A (en) Improvements in or relating to fixed fluid-tight tank or the like and method of constructing same
US2764545A (en) Sectional septic tank
US4563844A (en) Grain elevator
US3292324A (en) Silos and like containers
US3232673A (en) Pneumatic conveying, storing and/or mixing apparatus
US2927452A (en) Improvements in storage plants
CA1049067A (fr) Dispositif depoteur pour silos de vrac a fond plat
US3416596A (en) Packages of heat exchanging plates for rotary regenerative heat exchangers
JPH0340788Y2 (fr)
US3512321A (en) Storage bin
US897709A (en) Storage-bin.
SU1032152A1 (ru) Сборный железобетонный силос
US1018704A (en) Cooling and storage tanks for beer.
US595391A (en) Grain-elevator
RU1800031C (ru) Склад сыпучих материалов
US3015373A (en) Method and structure for storing semi-fluid material
US3225944A (en) Stocking systems
US1680274A (en) Drying apparatus
US2828025A (en) Flour storage bin
US3885366A (en) Silo construction
SU621853A1 (ru) Объемный блок дл стен хранилища сыпучих материалов
EP0963919B1 (fr) Silo modulaire pour stocker des chlorides, avec un distributeur en forme de disque
JPS6141808B2 (fr)
GB2088343A (en) Silos