EP0334085A1 - Tuyère de remplissage pour machines, dispositifs et autres pour le remplissage de sacs à valve - Google Patents

Tuyère de remplissage pour machines, dispositifs et autres pour le remplissage de sacs à valve Download PDF

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Publication number
EP0334085A1
EP0334085A1 EP89103849A EP89103849A EP0334085A1 EP 0334085 A1 EP0334085 A1 EP 0334085A1 EP 89103849 A EP89103849 A EP 89103849A EP 89103849 A EP89103849 A EP 89103849A EP 0334085 A1 EP0334085 A1 EP 0334085A1
Authority
EP
European Patent Office
Prior art keywords
outer tube
filler neck
filling
valve
air
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.)
Granted
Application number
EP89103849A
Other languages
German (de)
English (en)
Other versions
EP0334085B1 (fr
Inventor
Wolfgang Schwarz
Fabien Rencurosi
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.)
Greif Werk Maschinenfabrik GmbH
Original Assignee
Greif Werk Maschinenfabrik GmbH
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 Greif Werk Maschinenfabrik GmbH filed Critical Greif Werk Maschinenfabrik GmbH
Priority to AT89103849T priority Critical patent/ATE80104T1/de
Publication of EP0334085A1 publication Critical patent/EP0334085A1/fr
Application granted granted Critical
Publication of EP0334085B1 publication Critical patent/EP0334085B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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 invention relates to a filler neck for machines, devices of the like for filling valve bags with, in particular, powdery material, consisting of an inner tube guiding the filling material flow and an outer tube surrounding the inner tube at a distance for the purpose of forming an air-guiding channel therebetween.
  • the push-on area of the outer tube is designed such that it comprises an axial section which can be expanded in diameter. Furthermore, the air-guiding channel formed between these two tubes can be connected to a compressed air source. If a valve sack to be filled with powdery or free-flowing, usually air-fluidized, filling material has been placed on the push-on section of the filling nozzle, compressed air is directed into the channel mentioned.
  • the expandable section expands in a crowned manner from the outside and only comes into contact with the system over a short axial distance against the inner wall of the valve of the bag to be filled.
  • the object of the invention is to improve a filler neck of the type mentioned in such a way that the valve of the attached valve bag for the filling process lies closely against the filler neck for a very long distance and that the valve or the bag in the valve area does not require any further treatment after filling .
  • the solution to this problem is based on the filler neck mentioned in the introduction and is further characterized in that the outer tube is rigid in its push-on area receiving the valve of the valve bag and is provided with openings for the application of negative pressure in the channel.
  • valve of a valve bag attached to the filler neck according to the invention bears along the contact between the neck and valve over a very large axial distance at the neck, so that no filling material can penetrate into the valve during the filling process and this
  • the valve closes securely after being removed from the filler neck. This prevents the filling material from exiting the valve in the form of a small but steady stream after filling and contaminating its surroundings, including people.
  • the extraordinarily good contact between the filler neck designed according to the invention and the valve inner wall is also achieved in that the annular channel formed between the two tubes is subjected to negative pressure, as a result of which the valve inner wall is sucked onto the filler neck essentially over its entire length. An additional welding or gluing of the valve after filling is therefore not necessary.
  • a preferred embodiment of the invention consists in that the openings consist of slots which are provided at a distance from one another around the circumference of the outer tube, the slots being able to extend inclined to the longitudinal axis of the outer tube such that they - seen in the axial projection direction - their ends are at least adjacent to one another in the circumferential direction to form an uninterrupted air extraction zone.
  • This configuration is very effective and can be produced with little effort.
  • the outlet end of the inner tube and the outer tube is designed in the form of a cone or a truncated cone, both the cone and the truncated cone each having at least one outlet opening for the filling material in their downward-pointing region.
  • the inner tube can be designed to be rotatable about its longitudinal axis in order to be able to close the outlet end of the filler neck, and the outer tube advantageously also has a hole.
  • the risk of a sack bursting during filling is at least substantially reduced because the air escaping from the filling material can also be discharged via the channel between the two tubes.
  • the perforation in the region of the valve can be dispensed with and the valve can be made simpler. There is also no longer any danger of filling material escaping from a perforation.
  • the filling material emerges from the filling neck essentially vertically and not in a relatively large arc.
  • the filling cone of the filling material builds up essentially in the middle of the bag with the advantage that less free space remains in the upper part of the bag after filling, so that the bags can have a smaller height dimension with otherwise the same width and thickness due to the better filling levels.
  • better filling of the bags also results in better stackability of the bags on pallets, shelves or the like.
  • the filler neck consists of an outer tube 1 with a mounting flange 2 at its inlet end and with a suction pipe connection 3 in the vicinity of the flange and an inner tube 4, which has a smaller diameter, such that an air-conducting channel between it and the outer tube 1 5 is formed.
  • the inner tube which is arranged coaxially to the rigid outer tube, is rotatably mounted in the flange 2 and can be rotated by a certain amount by means of a cylinder 6 about the longitudinal axis 7 of the filler neck in order to close outlet openings which are still to be explained.
  • the piston rod 8 of the cylinder 6 engages a lever 9 which is rigidly attached to the inner tube 4.
  • the outer tube 1 is recessed accordingly and sealed with respect to the inner tube 4, as shown in FIG. 1.
  • the inner tube 4 and the outer tube 1 are designed in the region of their outlet end in such a way that they are otherwise closed-walled while leaving an outlet region for the filling material.
  • a cone formation 10, 11 is provided for both tubes 1,4, which are circular in cross section, the cones likewise being spaced apart from one another so that there is air between them can flow.
  • the cones 10, 11 there are two outlet openings 12, 13 for the filling material, in their downward-facing area, as can best be seen from FIG. 3.
  • cones 10, 11, truncated cones can also be provided, or any other form of training with corresponding outlet openings.
  • two openings 12, 13, only one opening or a plurality thereof can be provided in each case.
  • the cones 10, 11 or comparable designs it is also possible for the cones 10, 11 or comparable designs to be omitted and instead for the tubes in this area to be designed such that they allow a certain entry of air into the channel 5 which results from the contents of the filling nozzle hanging valve bag 14 is free, since the contents are usually conveyed fluidized in a known manner and contain a relatively large amount of air. On the other hand, it must be ensured that the filling material is prevented from entering the channel.
  • a porous ring 15, e.g. made of sintered metal is used as a blocking element, as shown in dashed lines in FIGS. 1 and 2.
  • a porous ring 15 as a blocking element if the cones 10, 11 or comparable configurations of the pipes 1, 4 are provided.
  • a hole 16 is then provided in the outer cone 10 (FIGS. 1 and 2), through which air can enter the channel 5, in which case the porous ring 15 can also be arranged just behind the hole 16.
  • the hole 16 can also have a screen cover.
  • the adjusting cylinder 6 causes the outlet openings 12 of this tube to be rotated relative to the outlet openings 13 of the outer tube 1 by rotating the inner tube 4 so that the openings 13 are closed. After a filling process has ended, the product is prevented from running on from the filler neck.
  • the outer tube 1 is provided with openings in its rigid plug-on area, which is indicated in FIG. 1A and receives the valve 17 of the valve bag 14, as a result of which the valve 17 is sucked in with its inner wall against this rigid area of the outer tube 1 when it is connected 3 negative pressure is applied to channel 5. It is thus achieved that the bag valve is sucked in substantially over its entire length and also lies sealingly against the filler neck over this length, so that no filling material penetrates into the area between the filler neck and the bag valve during the filling process.
  • the openings extend on the one hand around the circumference of the outer tube 1 and, on the other hand, encompass an area in the axial direction which corresponds approximately to the area A.
  • one possible embodiment of the openings mentioned is in the form of slots.
  • the slots 18 should at least adjoin one another — also seen in the axial projection direction — in order to form an air extraction zone which is uninterrupted in the circumferential direction, as is the case in the construction shown in FIG.
  • the slots themselves can also extend in the circumferential direction and be arranged in a row in several rows.
  • FIG. 2 another embodiment of the above-mentioned openings is in the form of bores 19.
  • four rows of bores 19 are provided, the bores of two rows which are adjacent to one another being offset from one another with a gap.
  • the bores are of such a size that - viewed in the axial direction of projection - the bores of at least all rows form an air extraction zone which is uninterrupted in the circumferential direction.
  • the porous blocking element 15 is provided in front of the slots 18 or in front of the bores 19, as is indicated by dashed lines in FIGS. 1 and 2. This ensures that the negative pressure in the channel 5 acts first and mainly on the area A, but that to a certain extent air that escapes from the fluidized filling material can also be discharged through the hole 16 out of the attached valve bag.
  • FIG. 3 An alternative embodiment with regard to the suction of the valve 17 on the outer tube 1 and the air discharge from the sack during the filling process is that a separate air discharge path is provided for the air coming from the plugged-in sack when the element 15 is omitted, as shown in FIG. 3.
  • a pipeline 20 is provided for this purpose, which is essentially within the Inner tube 4 runs. This pipeline penetrates the inner tube 4 and the outer tube 1 in the end of the filling nozzle in the filling material outlet area and opens into the open. On the other hand, the pipeline penetrates both pipes in the vicinity of the other end of the filler neck and can be connected to an air suction source (not shown), while the duct 5 can be connected via the connection 3 to a vacuum source (not shown).
  • the filler neck described above can be used on all machines, devices or the like for filling filling material in valve bags.
  • the contents generally consist of powdery contents, preferably those from the field of construction, or of free-flowing contents.
  • powdered filling material is conveyed or filled into a valve bag in a substantially fluidized manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Bag Frames (AREA)
EP89103849A 1988-03-22 1989-03-04 Tuyère de remplissage pour machines, dispositifs et autres pour le remplissage de sacs à valve Expired - Lifetime EP0334085B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89103849T ATE80104T1 (de) 1988-03-22 1989-03-04 Fuellstutzen fuer maschinen, vorrichtungen oder dergleichen zum fuellen von ventilsaecken.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3809593A DE3809593A1 (de) 1988-03-22 1988-03-22 Fuellstutzen fuer maschinen, vorrichtungen oder dergleichen zum fuellen von ventilsaecken
DE3809593 1988-03-22

Publications (2)

Publication Number Publication Date
EP0334085A1 true EP0334085A1 (fr) 1989-09-27
EP0334085B1 EP0334085B1 (fr) 1992-09-02

Family

ID=6350365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89103849A Expired - Lifetime EP0334085B1 (fr) 1988-03-22 1989-03-04 Tuyère de remplissage pour machines, dispositifs et autres pour le remplissage de sacs à valve

Country Status (4)

Country Link
EP (1) EP0334085B1 (fr)
AT (1) ATE80104T1 (fr)
DE (2) DE3809593A1 (fr)
ES (1) ES2035396T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0438794A1 (fr) * 1990-01-13 1991-07-31 Greif-Werk Maschinenfabrik GmbH Tuyère de remplissage pour machines de remplissage pour remplir des sacs à valve

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2861604A (en) * 1956-05-22 1958-11-25 Volunteer Portland Cement Comp Bag filling spout
FR1327433A (fr) * 1962-06-06 1963-05-17 Black Products Co Bec à évacuation d'air automatique
US3118474A (en) * 1961-04-18 1964-01-21 Staley Mfg Co A E Packing spout
US4344468A (en) * 1979-06-06 1982-08-17 E. I. Du Pont De Nemours And Company Process and apparatus for packaging

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2058652C3 (de) * 1970-11-28 1973-09-20 Erwin Behn Verpackungsbedarf Gmbh, 4150 Krefeld Ventilsackfullmaschine mit einer Fülldüse, die an ihrer Außenseite Ent luftungskanale zum Ableiten der Luft aufweist

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2861604A (en) * 1956-05-22 1958-11-25 Volunteer Portland Cement Comp Bag filling spout
US3118474A (en) * 1961-04-18 1964-01-21 Staley Mfg Co A E Packing spout
FR1327433A (fr) * 1962-06-06 1963-05-17 Black Products Co Bec à évacuation d'air automatique
US4344468A (en) * 1979-06-06 1982-08-17 E. I. Du Pont De Nemours And Company Process and apparatus for packaging

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0438794A1 (fr) * 1990-01-13 1991-07-31 Greif-Werk Maschinenfabrik GmbH Tuyère de remplissage pour machines de remplissage pour remplir des sacs à valve

Also Published As

Publication number Publication date
DE3809593A1 (de) 1989-10-12
DE58902170D1 (de) 1992-10-08
EP0334085B1 (fr) 1992-09-02
ES2035396T3 (es) 1993-04-16
ATE80104T1 (de) 1992-09-15

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