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EP0092265B1 - Entlüftungsvorrichtung für automatische Sackfüllmaschinen für pulverförmige Materialien - Google Patents

Entlüftungsvorrichtung für automatische Sackfüllmaschinen für pulverförmige Materialien Download PDF

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Publication number
EP0092265B1
EP0092265B1 EP83200458A EP83200458A EP0092265B1 EP 0092265 B1 EP0092265 B1 EP 0092265B1 EP 83200458 A EP83200458 A EP 83200458A EP 83200458 A EP83200458 A EP 83200458A EP 0092265 B1 EP0092265 B1 EP 0092265B1
Authority
EP
European Patent Office
Prior art keywords
air
nozzle
bag
deaerator
filtering
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
Application number
EP83200458A
Other languages
English (en)
French (fr)
Other versions
EP0092265A2 (de
EP0092265A3 (en
Inventor
Mario Moltrasio
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.)
FLSmidth Ventomatic SpA
Original Assignee
Car Ventomatic SpA
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 Car Ventomatic SpA filed Critical Car Ventomatic SpA
Priority to AT83200458T priority Critical patent/ATE28434T1/de
Publication of EP0092265A2 publication Critical patent/EP0092265A2/de
Publication of EP0092265A3 publication Critical patent/EP0092265A3/en
Application granted granted Critical
Publication of EP0092265B1 publication Critical patent/EP0092265B1/de
Expired legal-status Critical Current

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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
    • B65B39/00—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
    • B65B39/04—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers having air-escape, or air-withdrawal, passages
    • 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
    • B65B1/04—Methods of, or means for, filling the material into the containers or receptacles
    • B65B1/18—Methods of, or means for, filling the material into the containers or receptacles for filling valve-bags

Definitions

  • the present invention relates to a deaerating device for removing air contained in particulate materials inside the automatic bag filling machines.
  • the known automatic bag filling machines for granular and/or powdery materials are of the static or rotary kind and generally consist of a hopper receiving the material to be bagged, fed to it by generally pneumatic known means, said hoppers being provided with a number of delivery nozzles, on which the bags to be filled are inserted, each nozzle being provided with feeding means connected with bag weighing and ejecting means, which stop material delivery and eject the bag when the latter reaches a predetermined weight, the filling operation being resumed only when another bag is inserted on the nozzle.
  • screw feeders where a screw arranged at the hopper bottom and partially inserted in the nozzle, causes material to advance in it
  • turbine feeders where a wheel provided with rotary blades pushes the material into the nozzle
  • belt feeders where the material advanced by a drum, is practically thrown into the nozzle by a conveyor belt partially wrapping said drum and moving at a speed equal to the surface speed of the drum.
  • a problem still to be solved and highly felt by the manufacturers of bag filling machines, is to remove the greatest possible amount of air enclosed in the material, during the bag filling operation, since said air at this point of the working cycle is no more required and on the contrary it has a harmful effect because with the bigger volume of material, it increases bag filling time and bag volume for the same weight, as the bag has to contain a certain volume of air in addition to the particulate material.
  • the invention consists in effecting continuously suction of air from the product before introducing the material in the nozzle, by making the wall of the area preceding the nozzle, where the material is placed before being pushed into the nozzle by the turbine blade, of a filtering material, thus adapted to be passed by air but not by the product to be bagged, such as porous material, filtering wires and so forth, and making under said wall a chamber where vacuum may be produced, so as to remove enclosed air from the material before it is pushed into the nozzle, said vacuum operation being interrupted from time to time by a pressurized air blow to be effected during the stage of replacing on the nozzle a filled bag with an empty bag, in order to prevent that minute particles of material entered in the capillary air passages, in the long run clog the air filtering area.
  • a filtering material thus adapted to be passed by air but not by the product to be bagged, such as porous material, filtering wires and so forth, and making under said wall a chamber where vacuum may be produced, so
  • the system comprises a hopper 21, containing the fluidized material, a nozzle 22, a vertically arranged turbine 23 actuated by a pulley 32 connected to a suitable motor (not shown), a permeable wall 24 closed to the outside by an impermeable wall 25 so as to form an intermediate chamber 26 to which a pipe 27 is connected, which is divided into two lines 28 and 29 which can be shut off by valves 30 and 31, of which line 28 is connected to a vacuum source and line 29 to a source of pressurized air.
  • valve 30 is open and in the chamber 26 vacuum is produced, so as to suck air contained in the material which at that time is at the bottom of the hopper and must be pushed by the blade of turbine 23 to the nozzle mouth on the permeable wall 24.
  • valve 30 is closed and valve 31 is opened for a very short time (fraction of a second), so as to give an air blow in the reverse direction to the filtering baffle and to clean it from the particles of material that during air suction could have clogged the ducts of passage of said air, and then valve 31 is at once closed again, valve 30 is again opened and suction of air contained in the material is resumed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Vacuum Packaging (AREA)
  • Paper (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Claims (2)

1. Entlüftungsvorrichtung für automatische Sackfüllmaschinen für pulverförmige Materialien, die einen Trichter (21) und eine Düse (22) aufweist, wobei die Entlüftung durch eine Wandung (24) aus luftdurchlässigem bzw. Iuftfilterndem Werkstoff stattfindet, und diese Wandung ihrerseits in luftdichten Wänden (25) eingeschlossen ist, um einen Zwischenraum (26) dazwischen zu bilden, der an eine Vakuumleitung (28) für das Saugen der in den Materialien enthaltenen Luft bzw. an eine Druckluftleitung (29) für das Reinigen der Filterwandung (24) abwechselnd angeschlossen ist, dadurch gekennzeichnet, dass die Entlüftungszone am Boden des Trichters (21) vor dem Eingang der Düse (22) angeordnet ist, dass die Materialien von den die Materialien nach die Düse (22) schiebenden Schaufeln eines Turbinenspeisers (23) zugeführt werden, dass Luft aus den überragenden Materialien dauernd angesaugt wird, mit der Ausnahme von kurzen Zeitabständen, in denen das Vakuum ausgeschaltet wird und Druckluft geblasen wird, um die Filtertrennwandung (24) zu reinigen.
2. Entlüftungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Druckluftblasphase nur während des Sackwechselverfahrens bei ausgeschaltetem Turbinenspeiser (23) durchgeführt wird.
EP83200458A 1982-04-16 1983-03-31 Entlüftungsvorrichtung für automatische Sackfüllmaschinen für pulverförmige Materialien Expired EP0092265B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83200458T ATE28434T1 (de) 1982-04-16 1983-03-31 Entlueftungsvorrichtung fuer automatische sackfuellmaschinen fuer pulverfoermige materialien.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT20789/82A IT1151883B (it) 1982-04-16 1982-04-16 Disareatore per insaccatrici automatiche di materiali pulvurulenti
IT2078982 1982-04-16

Publications (3)

Publication Number Publication Date
EP0092265A2 EP0092265A2 (de) 1983-10-26
EP0092265A3 EP0092265A3 (en) 1984-11-14
EP0092265B1 true EP0092265B1 (de) 1987-07-22

Family

ID=11172089

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83200458A Expired EP0092265B1 (de) 1982-04-16 1983-03-31 Entlüftungsvorrichtung für automatische Sackfüllmaschinen für pulverförmige Materialien

Country Status (4)

Country Link
EP (1) EP0092265B1 (de)
AT (1) ATE28434T1 (de)
DE (1) DE3372602D1 (de)
IT (1) IT1151883B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4142156A1 (de) * 1991-12-20 1993-06-24 Haver & Boecker Fuellmaschine zum fuellen von ventilsaecken

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1309954C (en) * 1987-07-29 1992-11-10 Yasuo Yamada Deaerator for particulates

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1011489A (en) * 1962-12-14 1965-12-01 Black Products Co A method and machine for filling bags
DE2717948C2 (de) * 1977-04-22 1982-10-07 Erwin Behn Verpackungsbedarf Gmbh, 4150 Krefeld Ventilsackfüllvorrichtung für flugfähiges Füllgut

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4142156A1 (de) * 1991-12-20 1993-06-24 Haver & Boecker Fuellmaschine zum fuellen von ventilsaecken

Also Published As

Publication number Publication date
EP0092265A2 (de) 1983-10-26
IT8220789A0 (it) 1982-04-16
EP0092265A3 (en) 1984-11-14
DE3372602D1 (en) 1987-08-27
IT1151883B (it) 1986-12-24
ATE28434T1 (de) 1987-08-15

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