US3788445A - Apparatus for recovering bulk material from a pile - Google Patents

Apparatus for recovering bulk material from a pile Download PDF

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Publication number
US3788445A
US3788445A US00250140A US3788445DA US3788445A US 3788445 A US3788445 A US 3788445A US 00250140 A US00250140 A US 00250140A US 3788445D A US3788445D A US 3788445DA US 3788445 A US3788445 A US 3788445A
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US
United States
Prior art keywords
screw conveyor
pile
center
column
axis
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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
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US00250140A
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English (en)
Inventor
Vinay F Postel
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.)
Fives Lille Cail
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Fives Lille Cail
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Filing date
Publication date
Application filed by Fives Lille Cail filed Critical Fives Lille Cail
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Publication of US3788445A publication Critical patent/US3788445A/en
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Classifications

    • 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
    • B65G65/00—Loading or unloading
    • B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
    • B65G65/34—Emptying devices
    • B65G65/40—Devices for emptying otherwise than from the top
    • B65G65/46—Devices for emptying otherwise than from the top using screw conveyors
    • B65G65/466—Devices for emptying otherwise than from the top using screw conveyors arranged to be movable
    • 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
    • B65G65/00—Loading or unloading
    • B65G65/02—Loading or unloading machines comprising essentially a conveyor for moving the loads associated with a device for picking-up the loads
    • B65G65/16—Loading or unloading machines comprising essentially a conveyor for moving the loads associated with a device for picking-up the loads with rotary pick-up conveyors
    • B65G65/20—Paddle wheels

Definitions

  • An apparatus for recovering bulk material from a pile having a center and a face from which the material is to be recovered comprises a tubular screw conveyor rotatable about its axis and extending in a radial plane from the center of the pile.
  • a central column coaxial with the center and rotatable about its axis supports a pivot for one end of the screw conveyor for movement about a horizontal axis, and a hoist carried by the col- UNITED STATES PATENTS umn supports the other end of the conveyor.
  • the present invention relates to an apparatus for recovering bulk material from a pile of material, such pile having a center about which it extends and a face'from which the material is to be recovered.
  • the recovered material is gathered in a central hopper whence it is removed by a subterranean conveyor placed below the hopper.
  • the recovery apparatus is usually placed at the base of the pile in a radial plane and turns about the vertical axis of the stored material. If the material is sticky or humid, some means, such as a rake, is provided to loosen the upper portion of the pile.
  • a raking device suspended on an arm turning above the pile about a central mast or column.
  • the pivoting arm is supported at its outer end by one or several wheels or rollers running on a circular rail on the wall of the silo. This requires the wall to be reinforced and thus increases the cost of the silo.
  • the control of the raking device and the transmission of its movements to the pivoting arm are complex.
  • the helices of the screw conveyor may be arranged around the-circumference of the tube or they'may be on the inner wall of the tube, in which case buckets are affixed to the outer tube wall and pass recovered material through ports in the tube wall to the helices.
  • the pivot may be an anti-friction bearing mounted on the columns for pivoting about the horizontal axis, and a shaft affixed to the one conveyor end is journaled in the bearing.
  • FIG. 1 is a side elevational view of-a covered silo provided with a recovery apparatus according to this invention
  • FIG. 2 is a plan view of this apparatus
  • FIGS. 3a and 312 show details of the mounting of the apparatus on the central column or mast.
  • FIG. 4 is a view similar to that of FIG. 1 of a modification.
  • FIGS. 1 to 3 there is shown a silo with a frusto-conical side wall and a roof 12 resting on the side wall.
  • a central mast or column coaxial with the axis of the silo is rotatable about its axis.
  • the column comprises a first or lower part 19 which is carried by a support 23 on a fixed pin 21, and a second or upper part 30 which is mounted on the lower part by roller or like anti-friction bearings 52 and which is journaled in the roof by means of roller or like anti-friction bearings 57.
  • the upper part of the column carries an ejector 32 which serves to distribute the material to be stored in the silo over the entire area thereof.
  • This ejector is fed by a chute 34 which receives material from a delivery conveyor 36 placed above the silo.
  • the upper part of the column, the ejector and the chute are rotated by a motor 38 driving the gears 57.
  • the recovery apparatus is constituted by a tubular screw conveyor 16 rotatable about its axis and having one or more helices 42 which push the material towards the center of the pile where it falls into a central hopper whereunder a removal conveyor 29 is placed.
  • the helix 42 carries a circumferential rim oriented towards the center of the silo.
  • the tube 16 has affixed thereto an axle 17 mounted in a bearing 15 which is pivoted to the lower part 19 of the column for pivotal movement about a horizontal axis.
  • a motor 18 mounted on the axle 17 permits the tubular conveyor to be rotated about its axis.
  • the tube 16 is supported on an antifriction bearing attached to two cables 58 which are trained over pulleys 60 (see FIG. 2) mounted at the ends of two arms 61 and which are attached to the drums of a winch 59.
  • the arms 61 and the winch support are affixed to the lower part 19 of the column, and the winch serves to hoist the screw conveyor about its horizontal pivoting axis 22.
  • the assembly of the lower column part 19 andthe tubular conveyor 16 are rotated about the axis of the silo by motor 53.
  • the tubular conveyor 16 When the silo is being filled, the tubular conveyor 16 may be lifted to permit the silo to be filled completely.
  • the conveyor When it is desired to empty the silo, the conveyor is lowered and rotated so that the helices rake the upper face of the pile and cause the stored material to be discharged into the central hopper.
  • the conveyor may be turned about the axis of the silo by operating motor 53 while progressively lowering it until the silo has been completely emptied. It is also possible to leave the pivot of the conveyor in the same plane and progressively lower the outer end thereof to form a conical pile.
  • the conveyor may be turned about the axis of the silo slowly, either continuously or discontin uously.
  • the conveyor 16 is provided with buckets 44 affixed to the outer surface of the tubular wall and communicating with ports in the wall which pass the recovered material to interior helices in the tube.
  • Such a tubular conveyor is more fully described and claimed in my copending application filed simultaneously herewith and whose pertinent disclosure is herewith incorporated in the description.
  • An apparatus for recovering bulk material from a pile of the material, the pile having a center about which it extends and a face from which the material is to be recovered comprising a central hopper coaxial with the center, a tubular screw conveyor, the tubular screw conveyor being rotatable about its axis and extending in a radial plane from the center of the pile along the face thereof so as to cause the material recovered by the conveyor to be discharged into the central hopper, a central column coaxial with the centerof the pile and rotatable about its axis, a support means centrally of the hopper for supporting the lower end of the central column, a pivot mounting one end of the tubular screw conveyor on the column near the center for movement about a horizontal axis, and a hoisting means carried by the column and supporting the other end of the tubular screw conveyor.
  • the screw conveyor comprises helices on the inner wall of the tube, and further comprising buckets affixed to the outer wall of the tube and passing the recovered material through ports in the tube wall to the helices.
  • pivot is an anti-friction bearing mounted on the column for pivoting about the horizontal axis, and further comprising a shaft affixed to the one end and journaled in the bearing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Screw Conveyors (AREA)
US00250140A 1971-05-04 1972-05-04 Apparatus for recovering bulk material from a pile Expired - Lifetime US3788445A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7115937A FR2135048B1 (de) 1971-05-04 1971-05-04

Publications (1)

Publication Number Publication Date
US3788445A true US3788445A (en) 1974-01-29

Family

ID=9076352

Family Applications (1)

Application Number Title Priority Date Filing Date
US00250140A Expired - Lifetime US3788445A (en) 1971-05-04 1972-05-04 Apparatus for recovering bulk material from a pile

Country Status (11)

Country Link
US (1) US3788445A (de)
AU (1) AU459653B2 (de)
BE (1) BE782979A (de)
BR (1) BR7202601D0 (de)
DE (1) DE2221836A1 (de)
ES (1) ES402331A1 (de)
FR (1) FR2135048B1 (de)
GB (1) GB1344205A (de)
IT (1) IT955218B (de)
LU (1) LU65285A1 (de)
ZA (1) ZA723004B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4286909A (en) * 1978-04-12 1981-09-01 Ab Siwertell Apparatus for unloading bulk material from a storage space
EP0471136A1 (de) * 1990-08-15 1992-02-19 Cambelt International Corporation Vorrichtung und Verfahren zum Entladen von Schüttgut
US8770388B1 (en) 2011-10-19 2014-07-08 Duane Cyril Chaon Sweep conveyor for removal of grain and other materials from bins
US10227188B1 (en) 2017-02-17 2019-03-12 Duane Cyril Chaon Bin sweep pivots

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2289414A1 (fr) * 1974-10-30 1976-05-28 Tech Realisations Et Procede et dispositif de manutention de neige
US4707397A (en) * 1984-05-21 1987-11-17 Bridgestone Corporation Vibration damping metal panels
DE3803514C2 (de) * 1988-02-05 1996-11-21 Pwh Anlagen & Systeme Gmbh Vorrichtung zum Ein- und Ausstapeln von Schüttgut in einem Rundlager

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US860706A (en) * 1896-07-14 1907-07-23 Edward N Trump Conveying apparatus.
FR1032110A (fr) * 1950-03-16 1953-06-30 Escher Wyss Ag Appareil à vider les silos destinés à l'entassement de la glace en petits morceaux
DE1078943B (de) * 1958-10-27 1960-03-31 Fritz Siegler Speicher
DE1278349B (de) * 1966-07-07 1968-09-19 Schade Maschf Gustav Anlage zum Einspeichern und Ausspeichern von Schuettgut
GB1154772A (en) * 1966-02-25 1969-06-11 Buckau Wolf Maschf R Improvements in or relating to Devices for Loading and Unloading Ring-Shaped Piles
US3513994A (en) * 1968-09-27 1970-05-26 Clay Equipment Corp Bottom discharge silo construction

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191109583A (en) * 1911-04-20 1912-04-22 John Smith Improvements in Rotary Elevators and the like.
US3456818A (en) * 1967-11-29 1969-07-22 Speed King Mfg Co Inc Grain auger apparatus
FR2001715A1 (fr) * 1968-02-12 1969-10-03 Schade Maschf Gustav Procede de melange des differents composants d'un stock de produit en vrac
GB1185121A (en) * 1968-03-05 1970-03-18 Boythorpe Cropstores Ltd Improvements in or relating to Auger Discharge of Material from Storage Silos

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US860706A (en) * 1896-07-14 1907-07-23 Edward N Trump Conveying apparatus.
FR1032110A (fr) * 1950-03-16 1953-06-30 Escher Wyss Ag Appareil à vider les silos destinés à l'entassement de la glace en petits morceaux
DE1078943B (de) * 1958-10-27 1960-03-31 Fritz Siegler Speicher
GB1154772A (en) * 1966-02-25 1969-06-11 Buckau Wolf Maschf R Improvements in or relating to Devices for Loading and Unloading Ring-Shaped Piles
DE1278349B (de) * 1966-07-07 1968-09-19 Schade Maschf Gustav Anlage zum Einspeichern und Ausspeichern von Schuettgut
US3513994A (en) * 1968-09-27 1970-05-26 Clay Equipment Corp Bottom discharge silo construction

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4286909A (en) * 1978-04-12 1981-09-01 Ab Siwertell Apparatus for unloading bulk material from a storage space
EP0471136A1 (de) * 1990-08-15 1992-02-19 Cambelt International Corporation Vorrichtung und Verfahren zum Entladen von Schüttgut
US8770388B1 (en) 2011-10-19 2014-07-08 Duane Cyril Chaon Sweep conveyor for removal of grain and other materials from bins
US9156622B1 (en) 2011-10-19 2015-10-13 Duane Cyril Chaon Sweep conveyor for removal of grain and other materials from bins
US10227188B1 (en) 2017-02-17 2019-03-12 Duane Cyril Chaon Bin sweep pivots

Also Published As

Publication number Publication date
DE2221836A1 (de) 1972-12-14
ES402331A1 (es) 1975-04-01
IT955218B (it) 1973-09-29
BE782979A (fr) 1972-09-01
GB1344205A (en) 1974-01-16
FR2135048A1 (de) 1972-12-15
FR2135048B1 (de) 1974-03-22
ZA723004B (en) 1973-02-28
AU459653B2 (en) 1975-04-10
LU65285A1 (de) 1972-08-23
BR7202601D0 (pt) 1973-05-10
AU4181372A (en) 1973-11-08

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