US3664072A - Vertical cylindrical silo with wall of flexible material - Google Patents

Vertical cylindrical silo with wall of flexible material Download PDF

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Publication number
US3664072A
US3664072A US32118A US3664072DA US3664072A US 3664072 A US3664072 A US 3664072A US 32118 A US32118 A US 32118A US 3664072D A US3664072D A US 3664072DA US 3664072 A US3664072 A US 3664072A
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US
United States
Prior art keywords
silo
band
textile fabric
margin
wall
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
US32118A
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English (en)
Inventor
Werner Lieckfeld
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.)
BRAN and LUBBE
BRAN and LUEBBE
Original Assignee
BRAN and LUEBBE
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 BRAN and LUEBBE filed Critical BRAN and LUEBBE
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Publication of US3664072A publication Critical patent/US3664072A/en
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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
    • 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
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/12—Supports
    • B65D90/20—Frames or nets, e.g. for flexible containers
    • B65D90/205—Frames or nets, e.g. for flexible containers for flexible containers, i.e. the flexible container being permanently connected to the frame

Definitions

  • the present invention relates to a silo that is transportable readily and more particularly to a collapsible silo of flexible material preferably textile fabric, to be used for receiving, storing, and discharging by gravity free-flowing, loose bulk materials.
  • the wall of the vertical cylindrical silo is made of annular panels of the textile fabric arranged one above the other and with the panels having a height which corresponds to the width of the textile fabric. Said annular panels are sewn or welded together. (It should be noted that a like flexible material may be used in lieu of the textile fabric.) In such silos, however, seams run horizontally and vertically on the cylindrical wall.
  • Vertical cylindrical silos have also been made with a wall of vertical strips of textile fabric or like flexible material arranged side by side. In the case of these vertical strips, only the vertical seams are present in the cylindrical wall wall of the silos; accordingly, the strength and durability of these silos has not proven to be satisfactory because the vertical seams are especially vulnerable to the tangential tensile stresses.
  • silos have been manufactured from seamless tubular textile fabrics or like flexible material with the lower part tapered off by providing wedge-shaped folds or pleats.
  • the greatest stress is tangential, and even though there are no vertical seams, the fabric is subjected to these tangential forces in its weft direction which is least capable of withstanding these forces.
  • the stress to which the textile fabric can be exposed without tearing may be still further reduced by relatively low carrying capacities of such seams.
  • a vertical cylindrical silo with a wall of textile fabric or like flexible material which comprises one or several bands of said textile fabric arranged spirally and spirally welded, sewn, glued, or otherwise firmly attached to each other to form a unitary cylindrical wall.
  • a lower discharge funnel is made of rigid material for supporting bulk materials in the silo.
  • the vertical cylindrical wall of the silo according to the present invention is suspended from or mounted on a structural supporting frame, scaffold, rack, tripod, or the like.
  • the silo can be composed of several parts, for instance, of the cylindrical wall, a lower discharge funnel, and an upper feeding funnel and/or cover. In this manner a silo is provided which can be moved and transported as well as assembled and dismantled readily and which is of greater strength and stability than those of the prior art.
  • the discharge funnel to which the cylindrical wall is connected, is preferably made of steel.
  • a major portion of the vertical component of the weight of bulk material stored in the silo is resisted by said rigid discharge funnel.
  • tangential hoop stresses are imposed on the silo wall. Magnitudes and orientations of said stresses are a function of the weight and other characteristics of the bulk material as well as the slope of the funnel.
  • FIG. 1 is an elevation view of a vertical cylindrical silo according to the present invention
  • FIG. 2 is an elevation view showing a preferred supporting frame
  • FIG. 3 is a plan view corresponding to FIG. 2.
  • FIG. 4 is an elevation view of a vertical cylindrical silo according to the present invention with a plurality of bands alternating in sequence.
  • the vertical cylindrical silo wall 3 is made of a single width or band of textile fabric 2 which is wound spirally to form the silo wall.
  • the lower margin of textile band 2 is sewn to the upper margin of the preceding winding of the band.
  • Spirally ascending seam 7 which may be sewn or welded or even glued is shown distinctly in the figures.
  • the cylindrical wall is suspended at its upper end from a supporting fame generally designated 6 and is connected at its lower end in sealing engagement to funnel or lower closure 4 of a rigid material such as steel.
  • Funnel 4 rests on and is supported by vertical props 1.
  • the major portion of the weight of bulk materials in the silo is supported by rigid funnel 4.
  • the silo is provided at its top with cover 5.
  • the material composing wall 3 is preferably a band of woven textile fabric which may be provided with a coating of rubber, plastic, or the like material.
  • Supporting frame 6 is shown in greater detail in FIGS. 2 and 3.
  • Props 1 support lower ring 8 from which lower closure 4 with annular spout 9 depend.
  • Sleeves l0 and are spaced peripherally about lower ring 8 to receive columns 11 therein for mounting.
  • Columns 11 support upper ring 12 which carries cover 5 and spokes 13 to hold upper funnel 14 in position.
  • Diagonal bracing 15 and girth members 16 complete enclosure of wall 3. Alternating sleeves are provided with cranks 17 for engaging their associated columns for adjustment.
  • a band of rubber or plastic coated textile fabric of a width of, for instance, about 50 cm. is used.
  • the wall 3 is formed from such a band by winding it spirally upwardly and connecting each lower margin of said band to the upper margin of the preceding winding by sewing thus forming a spirally running continuous sewn seam 7.
  • Said seam has a gradient or rise of preferably between about 3 percent and about 1 1 percent and most advantageously between about 5 percent and about 6 percent. Due to such a slow rise the tangential stresses to which the sewn seam is subjected are taken up almost completely by the warp threads of the textile fabric and no substantial vertical stress across the seam is created.
  • the gradient or rise of spirally running seam 7 is preferably related to the width of the fabric and the circumference of the silo according to the following formula:
  • tan (b/d-1r) whereby b is the width of the fabric and dis the diameter of the silo.
  • the following table indicates the gradient or rise in percentage Diameter Width Gradient Width Gradient of Fabric of fabric d b mm. mm. mm. 2200 500 7.2 750 10.8 2700 500 5.9 750 8.8 3500 500 4.5 750 6.8 4100 500 3.9 750 5.8 5000 500 3.2 750 4.8
  • three bands 2a, 2b, 2c are offset circumferentially relative the vertical cylindrical silo wall 3 each by 120.
  • a vertical cylindrical silo for a pourable nonliquid material comprising in combination:
  • a flexible woven textile fabric having a warp direction and a weft direction and organized in a relatively long continuous band in the warp direction
  • the band having a lower margin and an upper margin with the lower margin connected to the upper margin of the last preceding turn of the spiral to form a continuous substantially horizontal seam in warp direction
  • each of the bands parallel to the other with their turns alternating in sequence.
  • the silo of claim 12 with the spiral seam having an ascending gradient of from about 5 percent to about 6 percent.
  • a vertical cylindrical silo for a pourable nonliquid material comprising in combination:
  • the band having a lower margin and an upper margin with the lower margin connected to the upper margin of the last preceding turn of the spiral to form a continuous substantially horizontal scam in the warp direction

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Storage Of Harvested Produce (AREA)
US32118A 1969-04-26 1970-04-27 Vertical cylindrical silo with wall of flexible material Expired - Lifetime US3664072A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1921512A DE1921512C3 (de) 1969-04-26 1969-04-26 Silo für die Lagerung von Schutt· und Rieselgut

Publications (1)

Publication Number Publication Date
US3664072A true US3664072A (en) 1972-05-23

Family

ID=5732583

Family Applications (1)

Application Number Title Priority Date Filing Date
US32118A Expired - Lifetime US3664072A (en) 1969-04-26 1970-04-27 Vertical cylindrical silo with wall of flexible material

Country Status (11)

Country Link
US (1) US3664072A (de)
AT (1) AT307315B (de)
BE (1) BE749467A (de)
CA (1) CA938072A (de)
CH (1) CH529281A (de)
DE (1) DE1921512C3 (de)
DK (1) DK127651B (de)
FR (1) FR2040269B1 (de)
GB (1) GB1258889A (de)
NL (1) NL7005702A (de)
ZA (1) ZA702583B (de)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4127970A (en) * 1975-11-11 1978-12-05 Walter Krause Suspended flexible container
US4479334A (en) * 1981-12-17 1984-10-30 Goode John T Liner for tower silo and method of installing same
US4625478A (en) * 1981-12-17 1986-12-02 Goode John T Liner for tower silo and method of installing same
US4813200A (en) * 1984-10-29 1989-03-21 Kirchner Dietrich A H Large container for pourable, pasty and sludge-like materials and a method of using the same
US4950122A (en) * 1986-04-24 1990-08-21 Landsdorff Stig-Ragnar Johann Improvement in monococque containers
US5150550A (en) * 1990-02-09 1992-09-29 Guy Rionde Silo made of suspended sheets
US5603359A (en) * 1993-09-24 1997-02-18 Ctb, Inc. Method and apparatus for storing material within a container which is exposed to rain
US5699840A (en) * 1993-08-11 1997-12-23 Hoechst Aktiengesellschaft Retention system and method for preventing the efflux of substances from installations into the surroundings
US5906293A (en) * 1993-09-24 1999-05-25 Ctb, Inc. Method and apparatus for maintaining uniform mass flow of granular material out of a container
CN1065832C (zh) * 1995-01-17 2001-05-16 Ctb公司 在雨淋条件下贮存物料的容器和方法
US6571990B2 (en) 2001-03-30 2003-06-03 Ctb Ip, Inc. Method and apparatus for adjustably directing granular material out of a container and reducing outlet pressure in the container
US20150274352A1 (en) * 2012-09-26 2015-10-01 Xaver Lipp Container produced from a single-layered, helically bent sheet-metal strip
WO2017049264A1 (en) * 2015-09-18 2017-03-23 Schlumberger Technology Corporation Flexible walled and scalable silo for dry bulk material
US20170360977A1 (en) * 2016-02-04 2017-12-21 Xenex Disinfection Services LLC. Systems, Cabinets And Methods For Disinfecting Objects
US10981719B2 (en) * 2016-11-03 2021-04-20 Westcap Ag Corp. Mobile collapsible storage silo
US11691831B2 (en) 2019-01-22 2023-07-04 543077 Alberta Ltd. Portable conveyor system including pivotable and extendable feed conveyors for feeding particulate material into an elevating assembly
US11880804B1 (en) 2020-04-29 2024-01-23 Prop Sense Canada Ltd. System and method for automated inventory, transport, management, and storage control in hydraulic fracturing operations
US11987442B2 (en) 2018-07-23 2024-05-21 543077 Alberta Ltd. Skid mounted storage system with collapsible silo for flowable material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007058884A1 (de) 2007-12-05 2009-06-10 Bühler AG Silobehälter

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US278957A (en) * 1883-06-05 Tubular package for blasting-cartridges
US2378159A (en) * 1944-08-22 1945-06-12 Us Rubber Co Storage tank
US2407455A (en) * 1942-04-03 1946-09-10 Ici Ltd Liquid container
US2852110A (en) * 1953-02-19 1958-09-16 Smith Corp A O Storage vessel
US2866261A (en) * 1956-09-19 1958-12-30 Kralovopolska Strojirna Method of erecting sheet plate casings having a cylindrical shape with vertical axis, by shifting the sheet plates along a helical line
US2943752A (en) * 1959-06-30 1960-07-05 Farmers Cooperative Exchange Bulk feed bin
US3380147A (en) * 1966-03-25 1968-04-30 Eldon O. Mcdonald Method of making a circular building structure

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2301092A (en) * 1940-10-15 1942-11-03 Thomas D Thompson Apparatus for spotting strips
US3047191A (en) * 1957-11-26 1962-07-31 Hercules Powder Co Ltd Filament wound vessels and methods for forming same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US278957A (en) * 1883-06-05 Tubular package for blasting-cartridges
US2407455A (en) * 1942-04-03 1946-09-10 Ici Ltd Liquid container
US2378159A (en) * 1944-08-22 1945-06-12 Us Rubber Co Storage tank
US2852110A (en) * 1953-02-19 1958-09-16 Smith Corp A O Storage vessel
US2866261A (en) * 1956-09-19 1958-12-30 Kralovopolska Strojirna Method of erecting sheet plate casings having a cylindrical shape with vertical axis, by shifting the sheet plates along a helical line
US2943752A (en) * 1959-06-30 1960-07-05 Farmers Cooperative Exchange Bulk feed bin
US3380147A (en) * 1966-03-25 1968-04-30 Eldon O. Mcdonald Method of making a circular building structure

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4127970A (en) * 1975-11-11 1978-12-05 Walter Krause Suspended flexible container
US4479334A (en) * 1981-12-17 1984-10-30 Goode John T Liner for tower silo and method of installing same
US4625478A (en) * 1981-12-17 1986-12-02 Goode John T Liner for tower silo and method of installing same
US4813200A (en) * 1984-10-29 1989-03-21 Kirchner Dietrich A H Large container for pourable, pasty and sludge-like materials and a method of using the same
US4950122A (en) * 1986-04-24 1990-08-21 Landsdorff Stig-Ragnar Johann Improvement in monococque containers
US5150550A (en) * 1990-02-09 1992-09-29 Guy Rionde Silo made of suspended sheets
US5699840A (en) * 1993-08-11 1997-12-23 Hoechst Aktiengesellschaft Retention system and method for preventing the efflux of substances from installations into the surroundings
US5603359A (en) * 1993-09-24 1997-02-18 Ctb, Inc. Method and apparatus for storing material within a container which is exposed to rain
US5906293A (en) * 1993-09-24 1999-05-25 Ctb, Inc. Method and apparatus for maintaining uniform mass flow of granular material out of a container
CN1065832C (zh) * 1995-01-17 2001-05-16 Ctb公司 在雨淋条件下贮存物料的容器和方法
US6571990B2 (en) 2001-03-30 2003-06-03 Ctb Ip, Inc. Method and apparatus for adjustably directing granular material out of a container and reducing outlet pressure in the container
US20150274352A1 (en) * 2012-09-26 2015-10-01 Xaver Lipp Container produced from a single-layered, helically bent sheet-metal strip
US10023352B2 (en) * 2012-09-26 2018-07-17 Xaver Lipp Container produced from a single-layered, helically bent sheet-metal strip
WO2017049264A1 (en) * 2015-09-18 2017-03-23 Schlumberger Technology Corporation Flexible walled and scalable silo for dry bulk material
US20170360977A1 (en) * 2016-02-04 2017-12-21 Xenex Disinfection Services LLC. Systems, Cabinets And Methods For Disinfecting Objects
US11690927B2 (en) * 2016-02-04 2023-07-04 Xenex Disinfection Services Inc. Systems, cabinets and methods for disinfecting objects
US10981719B2 (en) * 2016-11-03 2021-04-20 Westcap Ag Corp. Mobile collapsible storage silo
US11518608B2 (en) 2016-11-03 2022-12-06 Westcap Ag Corp. Mobile collapsible storage silo
US11987442B2 (en) 2018-07-23 2024-05-21 543077 Alberta Ltd. Skid mounted storage system with collapsible silo for flowable material
US11691831B2 (en) 2019-01-22 2023-07-04 543077 Alberta Ltd. Portable conveyor system including pivotable and extendable feed conveyors for feeding particulate material into an elevating assembly
US11880804B1 (en) 2020-04-29 2024-01-23 Prop Sense Canada Ltd. System and method for automated inventory, transport, management, and storage control in hydraulic fracturing operations

Also Published As

Publication number Publication date
FR2040269B1 (de) 1974-09-20
AT307315B (de) 1973-05-25
GB1258889A (de) 1971-12-30
DK127651B (da) 1973-12-10
BE749467A (fr) 1970-10-01
DE1921512B2 (de) 1977-07-28
CA938072A (en) 1973-12-11
ZA702583B (en) 1971-01-27
CH529281A (de) 1972-10-15
DE1921512A1 (de) 1970-11-05
NL7005702A (de) 1970-10-28
DE1921512C3 (de) 1978-03-30
FR2040269A1 (de) 1971-01-22

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