EP0130255A1 - Activateur pour trémies - Google Patents

Activateur pour trémies Download PDF

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Publication number
EP0130255A1
EP0130255A1 EP83306789A EP83306789A EP0130255A1 EP 0130255 A1 EP0130255 A1 EP 0130255A1 EP 83306789 A EP83306789 A EP 83306789A EP 83306789 A EP83306789 A EP 83306789A EP 0130255 A1 EP0130255 A1 EP 0130255A1
Authority
EP
European Patent Office
Prior art keywords
segment
lower segment
discharge opening
receiving member
material receiving
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Withdrawn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
EP83306789A
Other languages
German (de)
English (en)
Inventor
Eugene Robert Wahl
Richard Carl Wahl
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.)
Vibra Screw Inc
Original Assignee
Vibra Screw Inc
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 Vibra Screw Inc filed Critical Vibra Screw Inc
Publication of EP0130255A1 publication Critical patent/EP0130255A1/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Withdrawn legal-status Critical Current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
    • B65D88/54—Large containers characterised by means facilitating filling or emptying
    • B65D88/64—Large containers characterised by means facilitating filling or emptying preventing bridge formation
    • B65D88/66—Large containers characterised by means facilitating filling or emptying preventing bridge formation using vibrating or knocking devices

Definitions

  • the present invention relates generally to storage bins, and more particularly to an improved bin activator for vibratory attachment at the bottom of a storage bin so as to induce and control the flow of material therefrom.
  • An object of the present invention is to overcome these deficiencies in the prior art and provide a simplified and reliable, low-cost bin activator.
  • An object of an aspect of the present invention is the provision of an improved and simplified bin activator attachable to a supply bin to promote the discharge of material therefrom.
  • Another object of another aspect of the present invention is to provide an inexpensive and reliable bin activator which may be employed alternatively as a variable rate, controlled feeder.
  • the bin activator is desirably of low cost and has simplified on-site installation requirements, whilst providing reliable discharge of bulk materials.
  • an apparatus for promoting and controlling the flow of material from a vertically extending supply bin having a discharge opening at its bottom comprising:
  • the gyrator may have a motor speed controller so as to permit vibratory thrust variation and, thus, variation in material feed rate.
  • an apparatus for promoting and controlling the flow of material from a supply bin having a discharge opening at its bottom comprising:
  • bin activator comprises a segmented material receiving member 12 which is attachable to the lower portion of supply bin 10 by means of mating flange 14 and flange 24 of an upper segment 20 of the material receiving member 12.
  • mating flange 14 may be secured to supply bin 12 without damage to coatings, polished surfaces, or bin finishes.
  • Mating flange 14 and flange 24 may be provided with drilled holes 16 which permit securing of these flanges together by bolts or rivets.
  • Prior art bin activators often required field welding for installation to supply bins. Sealing means (not shown in the figures), such as an annular gasket or sealant compound, are provided between flanges 14 and 24 and between the securing rivets or bolts and the metallic surfaces of these flanges.
  • a flexible, beaded sleeve 30 seals the gap between the upper segment 20, which serves as the mounting ring, and lower segment 40 of material receiving member 12.
  • Sleeve 30 may, for example, be formed from a reinforced "Nordel" elastomer or other materials which possess high tear resistance and durability when exposed to high temperatures, acids, alkalis, and pressures. The essential requirements for sleeve 30 are that it prevent material leakage from supply bin 10 and material receiving member 12 and yet provide a flexible joint for unrestricted movement of lower segment 40 when subject to vibration.
  • Sleeve 30 is held in place by clamp bands 32 and 34. Raised edges may be provided on sleeve 30 to prevent it from sliding or slipping beneath these clamp bands.
  • Lower segment 40 is supported on upper segment 20 by means of three equally spaced hanger means 42, 44, and 46 about its circumference.
  • Each such hanger means may be made from a single piece of forged steel so as to provide proper support and safety at minimum cost.
  • Elastomeric bushings (not shown in the figures) are employed with the forged hangers to assist in isolating the vibration of lower segment 40 from supply bin 10.
  • Prior art bin activators have employed threaded rods as hanger means and these are inherently less secure over long periods of use.
  • the unique, three-point suspension system provides for a more efficient transmission of vibration through lower segment 40 and a more equal distribution of material weight therein than has been found in other suspension systems having four or more hangers.
  • Electromechanical gyrator means 60 is secured to lower segment 40 and serves to provide vibratory thrust thereto. Suitable gyrator means are generally described in U.S. Patents 3,272,042; 3,277,732; and 3,344,293. Gyrator means 60 for small bin activators according to the present invention may be an oil lubricated motor capable of delivering 1000 lb. (4450 N) thrust forces continuously for long periods of time (of the order of 20,000 hours).
  • Lower segment 40 has a lower surface 48 inclined slightly with respect to the horizontal.
  • the use of a slight incline permits increased material storage space per apparatus volume as well as causing the horizontal thrust exerted by gyrator means 60 to be resolved into vertical impulses extending far up into supply bin 10.
  • surface 48 is relatively flat, it supports material from supply bin 10 with significantly less packing and bridging as material is discharged than prior conical supply bin dischargers.
  • the vertical impulses deflecting up from surface 48 serve to break up or prevent what little bridging does occur.
  • Bottom discharge opening 50 is provided adjacent the lowest portions of lower surface 48. Since surface 48 is inclined, these lower portions are found at the side of lower segment 40. Bottom discharge opening 50 is, thus, not along the central longitudinal axis of material receiving member 12. As material flows through opening 50 from supply bin 10, this off-centre alignment is less likely to result in bridging.
  • An adjustable baffle 52 is provided in conjunction with discharge opening 50 so as to remove headload from that outlet and prevent material packing which would clog discharge opening 50. Baffle height may be adjustably set to handle different materials or material grades.
  • a side discharge opening 70 with an adjustable gate 72 may also be provided in lower segment 40 so as to permit alternative use of the bin activator as a variable rate discharger/feeder.
  • side opening 70 produces almost instant cessation of material flow when gyrator means 60 is turned off since without vibration, the material will quickly cake.
  • This feature eliminates the need for additional shut off gates and makes the bin activator ideal for batching operations.
  • This variable rate feature may be enhanced by the inclusion of motor speed controller 62 for gyrator means 60 to provide variable thrust.
  • baffle 52 or external gates may be provided to prevent material flow through bottom discharge opening 50.
  • a continuous external reinforcing ring 45 surrounds and overlays the upper portion of lower segment 40 for strength under vibration.
  • This reinforcing ring is welded or secured by other conventional means to the upper portions of lower segment 40.
  • the segmented assembly may be readily preassembled at the factory so as to ensure proper hanger alignment and reduce installation costs and time.
  • Prior bin activators often welded hangers and hanger fittings directly to supply bins at the installation site and suffered from misalignment problems.
  • Segmented material receiving member 12 supports material from supply bin 10 on surface 48.
  • Gyrator means 60 supplies horizontal thrusts to lower segment 40 so as to vibrate that portion of the bin activator, but not supply bin 12.
  • Material in lower segment 40 is positively displaced and responds by falling through either openings 50 or 70 or both.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Feeding Of Articles To Conveyors (AREA)
EP83306789A 1983-06-08 1983-11-08 Activateur pour trémies Withdrawn EP0130255A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US50231883A 1983-06-08 1983-06-08
US502318 1983-06-08

Publications (1)

Publication Number Publication Date
EP0130255A1 true EP0130255A1 (fr) 1985-01-09

Family

ID=23997279

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83306789A Withdrawn EP0130255A1 (fr) 1983-06-08 1983-11-08 Activateur pour trémies

Country Status (4)

Country Link
EP (1) EP0130255A1 (fr)
JP (1) JPS602478A (fr)
AU (1) AU2156383A (fr)
FI (1) FI834094A7 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0896933A3 (fr) * 1997-07-12 1999-07-28 Georg Stein Dispositif de vidange pour matières en vrac
US5960990A (en) * 1997-09-06 1999-10-05 Radosevich; Paul T. Product discharge activator and method of use
EP1000878A1 (fr) * 1998-11-12 2000-05-17 Industrie Services et Conseils I.S.E.R.C.O. S.A. Silo destiné au stockage de produits pulvérulents et présentant un fond vibrant

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB964758A (en) * 1962-01-09 1964-07-22 Jean Gaucet Improvements in or relating to vibrating exhausters for silos
US3173583A (en) * 1962-05-09 1965-03-16 Eugene A Wahl Bin activator
US3261508A (en) * 1964-01-24 1966-07-19 Eugene A Wahl Vibratory bin activator
US3744676A (en) * 1972-03-13 1973-07-10 Vibranetics Means for suspending and vibration isolating flow promoting apparatus from a flowable material container
US3785529A (en) * 1971-10-29 1974-01-15 Vibranetics Flowable material storage means
US3853247A (en) * 1972-03-08 1974-12-10 E Wahl Vibratory bin activator
GB1442671A (en) * 1972-07-18 1976-07-14 Buehler Ag Geb Silo discharge device and silo incorporating such device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB964758A (en) * 1962-01-09 1964-07-22 Jean Gaucet Improvements in or relating to vibrating exhausters for silos
US3173583A (en) * 1962-05-09 1965-03-16 Eugene A Wahl Bin activator
US3261508A (en) * 1964-01-24 1966-07-19 Eugene A Wahl Vibratory bin activator
US3785529A (en) * 1971-10-29 1974-01-15 Vibranetics Flowable material storage means
US3853247A (en) * 1972-03-08 1974-12-10 E Wahl Vibratory bin activator
US3744676A (en) * 1972-03-13 1973-07-10 Vibranetics Means for suspending and vibration isolating flow promoting apparatus from a flowable material container
GB1442671A (en) * 1972-07-18 1976-07-14 Buehler Ag Geb Silo discharge device and silo incorporating such device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0896933A3 (fr) * 1997-07-12 1999-07-28 Georg Stein Dispositif de vidange pour matières en vrac
US5960990A (en) * 1997-09-06 1999-10-05 Radosevich; Paul T. Product discharge activator and method of use
EP1000878A1 (fr) * 1998-11-12 2000-05-17 Industrie Services et Conseils I.S.E.R.C.O. S.A. Silo destiné au stockage de produits pulvérulents et présentant un fond vibrant
FR2785931A1 (fr) * 1998-11-12 2000-05-19 Ind Serv Et Conseils Iserco Sa Silo destine au stockage de produits pulverulents et presentant un fond vibrant

Also Published As

Publication number Publication date
FI834094A7 (fi) 1984-12-09
FI834094A0 (fi) 1983-11-08
AU2156383A (en) 1984-12-13
JPS602478A (ja) 1985-01-08

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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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE DE FR GB IT LU NL SE

17P Request for examination filed

Effective date: 19850704

D17P Request for examination filed (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19850910

RIN1 Information on inventor provided before grant (corrected)

Inventor name: WAHL, EUGENE ROBERT

Inventor name: WAHL, RICHARD CARL