WO2002090194A2 - Appareil et systeme permettant d'extraire un sac de vrac d'un dispositif de dechargement sous atmosphere commandee - Google Patents

Appareil et systeme permettant d'extraire un sac de vrac d'un dispositif de dechargement sous atmosphere commandee Download PDF

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Publication number
WO2002090194A2
WO2002090194A2 PCT/US2002/014901 US0214901W WO02090194A2 WO 2002090194 A2 WO2002090194 A2 WO 2002090194A2 US 0214901 W US0214901 W US 0214901W WO 02090194 A2 WO02090194 A2 WO 02090194A2
Authority
WO
WIPO (PCT)
Prior art keywords
bag
reservoir
vacuum source
vacuum
bulk bag
Prior art date
Application number
PCT/US2002/014901
Other languages
English (en)
Other versions
WO2002090194A3 (fr
Inventor
David R. Gill
Keith W. Sterner
John F. Simonof, Jr.
Original Assignee
Flexicon Corporation
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 Flexicon Corporation filed Critical Flexicon Corporation
Priority to AU2002303705A priority Critical patent/AU2002303705A1/en
Publication of WO2002090194A2 publication Critical patent/WO2002090194A2/fr
Publication of WO2002090194A3 publication Critical patent/WO2002090194A3/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/28—Controlling escape of air or dust from containers or receptacles during filling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B55/00—Preserving, protecting or purifying packages or package contents in association with packaging
    • B65B55/24—Cleaning of, or removing dust from, containers, wrappers, or packaging ; Preventing of fouling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
    • B65G69/18—Preventing escape of dust
    • B65G69/181—Preventing escape of dust by means of sealed systems
    • B65G69/182—Preventing escape of dust by means of sealed systems with aspiration means

Definitions

  • the present invention relates to bulk bag dispensing systems and, more specifically, to a bulk bag system and method for handling bulk bags having residual while significantly reducing or eliminating the contaminants generated during that process. This significant reduction in contaminants results in cleaner manufacturing sites, longer operable life for on-site machinery, and reduced health hazzards to operators and handlers.
  • Bulk bags are typically made of heavy woven material with heavy duty straps for supporting the bulk bag when it is hung in a tower-like supporting frame. Bulk bags typically have a material unloading outlet that is closed by a draw and tie string. Typical bulk bags hold between approximately two thousand (2,000) pounds and two thousand five hundred (2,500) pounds. However, depending on the application used with the bulk bag dispensing system, the bulk bags can be much heavier or much lighter.
  • a standard bulk bag, commonly referred to as a one ton bag, has a volume of about sixty-four (64) cubic feet.
  • the bulk bag is generally sized to fit on a standard pallet and the actual weight of the bulk bag will depend on the density of the enclosed bag contents. After emptying, the bulk bag frequently still contains residual trapped in the bulk bag. Additionally, some resistance to the complete emptying of the contents from the bag may be created by the physical characteristics of the bag or its contents. [0006] After emptying the bag, an operator removes it from the unloading system and folds it into a more compact form. This process results in residual material being ejected into the surrounding atmosphere. This ejected material creates pollutants that are detrimental to the health of on-site personnel and factory equipment. [0007] What the art needed was a system that significantly reduced or eliminated these pollutants in the surrounding atmosphere.
  • An apparatus for reducing atmospheric contamination caused by the release of a material from a bulk bag when the bulk bag is removed from a bulk bag unloader that transfers the material from the bulk bag to a reservoir has a conduit for establishing an airflow path between the reservoir and a vacuum source.
  • the conduit has first and second ends with one end in a generally airtight connection to the reservoir and the other in a generally airtight connection to the vacuum source.
  • the preferred vacuum source draws about 0.0074 Atmospheres which is sufficient to cause the bulk bag to draw in upon itself.
  • Figure 1 is a front elevation of a bulk bag unloading system including a residual material removal system according to a preferred embodiment of the invention
  • Figure 2 is an elevation, along the line 2-2, of the system of Figure 1 with the bulk bag removed;
  • Figure 3 is a top plan view, along the line 3-3, of the system of Figure
  • Figure 4 illustrates a bulk bag in a collapsed condition.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT [0017] Certain terminology is used in the following description for convenience only and is not limiting. The words “right,” “left,” “lower,” and “upper” designate directions in the drawings to which reference is made. The words “inwardly” and “outwardly” refer to directions toward and away from, respectively, the geometric center of the system for removing material from a bulk bag and designated parts thereof. The terminology includes the words above specifically mentioned, derivatives thereof and words of similar import.
  • FIG. 1-3 a preferred embodiment of the invention for removing residual material from a bulk bag.
  • the present invention is particularly useful with known unloading system, such as describe in U. S. Patents 5, 184, 759; 6,290,098; and 6,340,100 which are commonly owned with the present application and are incorporated herein by reference as if fully set forth herein.
  • a bulk bag 12 is suspended within a supporting frame 14 so that material 16 can be unloaded into a hopper or reservoir 18.
  • An airtight discharge system is connected to hopper 18 so that air displaced by the material entering the hopper 18 is conveyed through the tube 22 and is filtered prior to being discharged into the surrounding atmosphere 74.
  • a vacuum source 20 is connected to the air discharge system
  • the vacuum source 20 is used at the end of the bag emptying to vacuum out any air and residual material in the bag. As will be explained later this collapses the bag and simplifies bag removal while improving environmental control. Use of the vacuum during unloading may also promote material flow.
  • the vacuum source 20 of this embodiment is operated to create a vacuum of 0.0074 Atmospheres. Depending on the bag and its material content, vacuum as low as 0.0025 Atmospheres may be sufficient. The preferred vacuum has been shown to be sufficient to vacuum out substantially all of the remaining air and material from the inside of the bulk bag 12.
  • the supporting frame 14 and its various components are formed of a rigid, high strength, durable material, such as stainless steel.
  • a rigid, high strength, durable material such as stainless steel.
  • various structural components can be formed of other materials, such as a heavy duty polymer, alloy, aluminum, steel or the like without departing from the scope of the present invention.
  • the supporting frame 14 preferably a tower configuration as described in the above referenced patents.
  • a rectangular framing array 24 provides a safety frame work which is intended to partially support the bulk bag 12 should one or more of the bulk bag straps break or tear.
  • the rectangular framing array also supports one end 26 of first and second plates 28A, 28B that are used to adjust the shape of the bulk bag and encourage full material flow out of the bag.
  • the framing arrays 30 are preferably located at various locations along the supporting frame 14 to further stabilize the bulk bag system.
  • the vacuum source 20 is preferably supported on a side mount 32 that is formed by a tubular platform 34 attached to the supporting frame 14.
  • a distal end of the tubular platform 34 is preferably supported by at least one inclined beam 36 that is connected on one end to the distal end of the tubular platform 34 and is connected on another end to the supporting frame 14.
  • the vacuum source 20 can be mounted on the supporting frame 14 or remotely located without departing from the scope of the present invention.
  • the overall shape, orientation, and structural materials of the supporting frame 14 can vary without departing from the scope of the present invention.
  • the dispensing tube 40 is attached to a dispensing tube 40 and secured thereto via a circular clamp 42.
  • the dispensing tube 40 is joined to opening 68 in the top of the hopper 18.
  • the dispensing tube 40 is engageable with the spout 38 to establish a generally airtight connection between the bag 12 and the system discharge 10. This also serves to maintain the bag spout 38 in alignment with the material reservoir or receptacle.
  • During the dispensing process it is common for some materials to form a column-like hollow structure in the remaining material. Those skilled in the art will recognize this as the material's angle of repose. When such a column forms, the dispensing efficiency of the remaining material 16 is reduced. To prevent such dispensing inefficiencies, an inward pressure is preferably exerted on the lower sides of the bulk bag 12.
  • One preferred method of exerting inward pressure on the lower portion of the bulk bag 12 is to rotate the first and second plates 28 A, 28B generally inwardly into the bulk bag 12 to maintain the proper angle of repose for the material 16 within the bulk bag 12.
  • the first and second plate 28 A, 28B operate in a similar fashion and, accordingly, only the operation of the first plate 28A will be described below.
  • a rightward end of the first plate 28A is pivotally secured to the rectangular framing array 24 at a position beneath a lower end of the bulk bag 12.
  • a cylinder 44 is preferably used to rotate the first plate 28A generally upwardly and inwardly into the bulk bag 12 in a generally clockwise fashion about the pivotally secured plate end 26 to exert an inwardly directed force on the lower portion of the bulk bag 12.
  • the cylinder 44 has a first end securely mounted to the support frame 14 at a location that is preferably beneath the lower end of the bulk bag 12.
  • a second end of the cylinder 44 supports a piston 46 that can be extended outwardly from the cylinder 44 to rotate the first plate 28A in the clockwise direction.
  • the piston 46 can control the position of the first plate 28 A in order to supply the necessary inwardly directed force to the lower portion of the bulk bag 12. It is preferred, but not necessary, that the first and second plates 28 A, 28B operate in unison in a generally synchronized fashion.
  • the system discharge commonly is at least passively filtered before exposing the escaping air to the surrounding atmosphere 74.
  • passive filtration is accomplished with the filter element 52, which is a pleated circular filter that is available from MPF as model 900209, positioned in chamber 51 above the inverted funnel 23.
  • the filter element 52 has a closed bottom and an open top, for the reasons discussed hereinafter.
  • passive filtration may be accomplished in other ways and that the primary concern is to block air discharge, and, in the present invention, guard the vacuum source 20 against air borne material.
  • the vacuum source 20 is preferably positioned at the end of the airflow path 62 and, preferably, is open to the atmosphere even when it is not in operation.
  • the presently preferred vacuum source 20 provides an air flow of approximately four hundred three (403) cubic feet per minute at about three (3) inches of standing water pressure. It has been found that a vacuum source operated at between approximately one (1) and approximately six (6) inches of standing water pressure will provide the benefits of the present invention.
  • the particular operating vacuum can be varied depending upon the material and bag application for which the invention is used. For example, lighter more hazardous materials in bags made of very heavy bag material may require greater vacuum based on the bag. Likewise, easily collapsed bags may call for less vacuum.
  • a reverse flow device 56 is positioned between the vacuum source and the filters.
  • the reverse flow device 56 has an outlet nozzle 58 aligned to direct a pressurized fluid, such as air, through the filters 52 and into the chamber 51.
  • a pressurized fluid such as air
  • the reverse flow device 56 operates periodically and directs air toward the chamber 51 to dislodge material 16 captured by the filter 52.
  • the preferred reverse flow device 56 delivers an air pulse of approximately eighty (80) pounds per square inch at the nozzle 58.
  • the off portion of the pulse is preferably set at a duration of between approximately five (5) seconds and approximately ten (10) seconds and the on pulse is set between approximately two tenths (0.2) of a second and approximately two point five (2.5) seconds.
  • the reverse flow device may be used with passive filtration as well as active filtration with vacuum source 20. Dislodged material is returned to the reservoir for further handling. This helps to reduce the uncontrolled material which could be discharged to the atmosphere when the bag is removed.
  • the present invention even if operated only when the bag is substantially empty, provides for removal of material from a bulk bag with reduced atmospheric contamination. The vacuuming of the bulk bag 12 prior to it being removed and folded allows on-site personnel to fold the bulk bags 12 without ejecting a substantial amount of material particles into the atmosphere 74.
  • the present invention makes it possible to handle empty bulk bags 12 without any significant contamination of the atmosphere during the bag removal process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vacuum Packaging (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)

Abstract

La présente invention concerne un appareil et un système permettant d'extraire un matériau d'un sac de vrac avec une pollution atmosphérique réduite. Cette invention permet de mettre en contact le sac de vrac dans un agencement sensiblement étanche avec un réservoir qui reçoit le matériau déchargé et avec un système d'évacuation à écoulement d'air qui filtre le flux d'air avant qu'il n'entre dans l'atmosphère environnante. Cet appareil est spécifiquement destiné à retirer le matériau résiduel du sac de vrac et à écraser ce sac par le vide. Ce procédé simplifie l'extraction et le pliage du sac et la pollution atmosphérique par le matériau résiduel est réduite.
PCT/US2002/014901 2001-05-09 2002-05-09 Appareil et systeme permettant d'extraire un sac de vrac d'un dispositif de dechargement sous atmosphere commandee WO2002090194A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002303705A AU2002303705A1 (en) 2001-05-09 2002-05-09 Atmospherically controlling a bulk bag in unloader

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US28972501P 2001-05-09 2001-05-09
US60/289,725 2001-05-09
US31870301P 2001-09-12 2001-09-12
US60/318,703 2001-09-12

Publications (2)

Publication Number Publication Date
WO2002090194A2 true WO2002090194A2 (fr) 2002-11-14
WO2002090194A3 WO2002090194A3 (fr) 2003-05-01

Family

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Country Status (3)

Country Link
US (1) US20030006248A1 (fr)
AU (1) AU2002303705A1 (fr)
WO (1) WO2002090194A2 (fr)

Cited By (4)

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EP2644520A1 (fr) * 2012-03-28 2013-10-02 AZO-Holding GmbH Dispositif pour vider sans contamination des conteneurs souples
WO2013162352A3 (fr) * 2012-04-27 2014-01-09 Dialog Construction Sdn. Bhd. Contenant de stockage en vrac
WO2014202613A1 (fr) * 2013-06-17 2014-12-24 Haver & Boecker Ohg Machine d'emballage et procédé
EP3643623A1 (fr) * 2018-10-26 2020-04-29 Chandra Parmar Améliorations apportées à un appareil et procédé de remplissage de récipients

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US7249691B2 (en) * 2003-10-29 2007-07-31 Corn Products International, Inc. Product extractor for valve bags
US8528606B1 (en) 2007-11-14 2013-09-10 Michael J. Seiver Apparatus and methods for filling containers with non-liquids
US10538381B2 (en) 2011-09-23 2020-01-21 Sandbox Logistics, Llc Systems and methods for bulk material storage and/or transport
US10464741B2 (en) 2012-07-23 2019-11-05 Oren Technologies, Llc Proppant discharge system and a container for use in such a proppant discharge system
US9718610B2 (en) 2012-07-23 2017-08-01 Oren Technologies, Llc Proppant discharge system having a container and the process for providing proppant to a well site
US8622251B2 (en) 2011-12-21 2014-01-07 John OREN System of delivering and storing proppant for use at a well site and container for such proppant
US9809381B2 (en) 2012-07-23 2017-11-07 Oren Technologies, Llc Apparatus for the transport and storage of proppant
US20190135535A9 (en) 2012-07-23 2019-05-09 Oren Technologies, Llc Cradle for proppant container having tapered box guides
US9340353B2 (en) 2012-09-27 2016-05-17 Oren Technologies, Llc Methods and systems to transfer proppant for fracking with reduced risk of production and release of silica dust at a well site
US9421899B2 (en) 2014-02-07 2016-08-23 Oren Technologies, Llc Trailer-mounted proppant delivery system
USD688349S1 (en) 2012-11-02 2013-08-20 John OREN Proppant vessel base
USD688351S1 (en) 2012-11-02 2013-08-20 John OREN Proppant vessel
USD688350S1 (en) 2012-11-02 2013-08-20 John OREN Proppant vessel
CN102976114A (zh) * 2012-12-10 2013-03-20 北京航天动力研究所 一种用于粉体重力灌装的集装箱装料系统
US9446801B1 (en) 2013-04-01 2016-09-20 Oren Technologies, Llc Trailer assembly for transport of containers of proppant material
USD688597S1 (en) 2013-04-05 2013-08-27 Joshua Oren Trailer for proppant containers
USD694670S1 (en) 2013-05-17 2013-12-03 Joshua Oren Trailer for proppant containers
US11873160B1 (en) 2014-07-24 2024-01-16 Sandbox Enterprises, Llc Systems and methods for remotely controlling proppant discharge system
US9676554B2 (en) 2014-09-15 2017-06-13 Oren Technologies, Llc System and method for delivering proppant to a blender
US10016712B2 (en) * 2015-05-07 2018-07-10 JPL Global, LLC Portable system and methodology that facilitates dust collection within a silo apparatus
CA3008905C (fr) 2016-01-06 2020-07-07 Oren Technologies, Llc Transporteur avec systeme collecteur de poussiere integre
US10518828B2 (en) 2016-06-03 2019-12-31 Oren Technologies, Llc Trailer assembly for transport of containers of proppant material
EP3434445A1 (fr) 2017-07-28 2019-01-30 Hewlett-Packard Development Company, L.P. Structure d'admission de gaz pour un réservoir de matériau de construction
EP3552999B1 (fr) * 2018-04-13 2022-03-23 Imertech Sas Dispositif de chargement de matière particulaire
CN110902416A (zh) * 2018-09-18 2020-03-24 中国石油化工股份有限公司 一种可移动的多规格包装防尘快速卸料装置及方法
CN110342285A (zh) * 2019-07-19 2019-10-18 唐钢美锦（唐山）煤化工有限公司 一种防止粉尘外逸的斗式卸灰装置
CN114644239B (zh) * 2022-04-12 2024-06-14 西南石油大学 一种可震动升降螺旋杆式吨袋卸料机及方法

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2644520A1 (fr) * 2012-03-28 2013-10-02 AZO-Holding GmbH Dispositif pour vider sans contamination des conteneurs souples
WO2013162352A3 (fr) * 2012-04-27 2014-01-09 Dialog Construction Sdn. Bhd. Contenant de stockage en vrac
US9382065B2 (en) 2012-04-27 2016-07-05 Dialog Construction Sdn. Bhd. Bulk storage container and bulk material handling assembly therewith
WO2014202613A1 (fr) * 2013-06-17 2014-12-24 Haver & Boecker Ohg Machine d'emballage et procédé
US10173794B2 (en) 2013-06-17 2019-01-08 Haver & Boecker Ohg Packaging machine and method
EP3643623A1 (fr) * 2018-10-26 2020-04-29 Chandra Parmar Améliorations apportées à un appareil et procédé de remplissage de récipients

Also Published As

Publication number Publication date
AU2002303705A1 (en) 2002-11-18
US20030006248A1 (en) 2003-01-09
WO2002090194A3 (fr) 2003-05-01

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