EP0334085B1 - Filling supports for machines, devices or the like for filling valve bags - Google Patents

Filling supports for machines, devices or the like for filling valve bags Download PDF

Info

Publication number
EP0334085B1
EP0334085B1 EP89103849A EP89103849A EP0334085B1 EP 0334085 B1 EP0334085 B1 EP 0334085B1 EP 89103849 A EP89103849 A EP 89103849A EP 89103849 A EP89103849 A EP 89103849A EP 0334085 B1 EP0334085 B1 EP 0334085B1
Authority
EP
European Patent Office
Prior art keywords
filling
valve
pipe
air
region
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 - Lifetime
Application number
EP89103849A
Other languages
German (de)
French (fr)
Other versions
EP0334085A1 (en
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/en
Publication of EP0334085A1 publication Critical patent/EP0334085A1/en
Application granted granted Critical
Publication of EP0334085B1 publication Critical patent/EP0334085B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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 or the like for filling valve bags with, in particular, powdery material, consisting of an inner tube guiding the fill material flow and a rigid outer tube surrounding the inner tube at a distance to form an air-guiding channel therebetween, the outer tube has openings in its plug-on area receiving the valve of the valve bag.
  • Such a known filler neck is described in US-A-3 118 474. It has an inner tube guiding the filling material, which is surrounded by an outer tube in the shape of a truncated cone, onto which the valve bag to be filled is attached with its valve.
  • the two tubes form an essentially closed annular space between them, the outer tube being provided with two rows of holes at the front end.
  • the annular space is closed at its rear end by a radial wall which is provided with both an air inlet socket and an air outlet socket.
  • the rows of holes opening into the annular space are completely free of valve material, so that the air from the valve bag flows unhindered into the annular space and from there via whose air discharge nozzle can be removed. If the rows of holes with filling material have clogged, a blast of compressed air is injected into the air intake Annulus given that clears the rows of holes again. Furthermore, the bag valve is not airtight on the outer tube when the valve bag hangs ready to fill on the filler neck.
  • 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 named channel. The expandable section expands convexly to the outside and only comes into sealing contact with the inner wall of the valve of the bag to be filled over a short axial distance.
  • the sack has therefore been specially designed and perforated in the region of the valve in order to create an outlet for the air contained in the fluidized filling material. Nevertheless, the number of bursting bags is relatively high due to the filling pressure of the contents, because the perforation of the valve area must not exceed a certain size in order to prevent the contents of the bag from escaping, but this has not been fully achieved.
  • 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 .
  • valve of a valve bag which is plugged onto the filler neck according to the invention it is possible for the valve of a valve bag which is plugged onto the filler neck according to the invention to lie along the entire contact between the neck and the valve over a very large axial distance, so that no filling material can penetrate into the valve during the filling process.
  • the extraordinarily good system between the filler neck and the inner wall of the valve is supported by the fact that the annular channel formed between the two tubes is subjected to negative pressure, as a result of which the inner wall of the valve is firmly sucked onto the filler neck essentially over its entire length.
  • the fact that the filler neck can be shut off means that even after the filling process has ended, no filling material continues to run from the filler neck into the bag valve when the filled sack is removed.
  • valve of the sack closes securely after being removed from the filler neck, so that there is no additional welding or gluing of the valve after filling. This in turn prevents the filling material from exiting the bag valve in the form of a small but steady stream after filling and contaminating its surroundings, including people.
  • the filling material emerges from the filling neck essentially vertically and not in a relatively coarse curve.
  • 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 better filling levels.
  • a better filling of the sacks results also a better stackability of the same on pallets, shelves or the like.
  • a preferred embodiment of the invention is that the openings consist of inclined slots which are provided at a distance from one another around the circumference of the outer tube, the slots extending so inclined to the longitudinal axis of the outer tube that they - seen in the axial direction of projection - with their At least adjoin the ends to form a circumferentially uninterrupted air extraction zone.
  • This configuration is very effective in suction and can be produced with little effort.
  • a further embodiment of the filler neck according to the invention is that the respective 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 in their downward-pointing region the at least one outlet opening for the filling material exhibit.
  • the outer tube advantageously also has an air suction 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 omitted and the valve can be made simpler. There is also no longer any danger of filling material escaping from a perforation.
  • 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 formed 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 air is between them can flow.
  • the cones 10, 11 there are two outlet openings 12, 13 for the filling material, in their downward-pointing region, 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.
  • 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 pipes 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.
  • Such a possibility may consist in that 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.
  • the porous ring 15 as a blocking element if the cones 10, 11 or comparable configurations of the pipes 1, 4 are provided as a shape for the outlet end of the filler neck.
  • a hole 16 is then provided in the outer cone 10 (FIGS. 1 and 2) through which air from the valve bag 14 can enter the channel 5.
  • the porous ring 15 can also be arranged just behind the hole 16.
  • the hole 16 can also have a screen cover instead of the porous ring.
  • the above-mentioned closed wall of the outer tube 1 remains essentially through the hole 16, which only has a ventilation function.
  • 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 perforations in its rigid plug-on area, which is indicated in FIG. 1 and receives the valve 17 of the valve bag 14, as a result of which the valve 17 is sucked with its inner wall against this rigid area of the outer tube 1 when via the Port 3 a negative pressure is applied to channel 5. It is thus achieved that the bag valve is sucked substantially over its entire length and also tightly abuts 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 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 openings mentioned 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 free from interruption 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)

Abstract

The filling supports for machines, devices or the like for filling valve bags (14) with material, in particular powdery material, comprises an inner tube (4) for guiding the flow of material, and an outer tube (1) which surrounds the inner tube at a distance, for the purpose of forming an air-ducting channel (5) in between. To improve the bearing of the bag valve on the outer tube (1), the outer tube is of rigid design in its attachment region for receiving the valve (17) of the valve bag (14) and is provided with perforations (18, 19) for the application of reduced pressure in the channel (5). The perforations (18, 19) preferably consist of slots (18) which are provided at a distance from one another about the circumference of the outer tube (1) and are furthermore so arranged that, as seen in the axial projection direction, at least adjoin one another by their ends to form an air-suction zone which is free of interruptions in the circumferential direction. <IMAGE>

Description

Die Erfindung geht aus von einem Füllstutzen für Maschinen, Vorrichtungen oder dergleichen zum Füllen von Ventilsäcken mit insbesondere pulverförmigem Gut, bestehend aus einem den Füllgutstrom führenden Innenrohr und aus einem das Innenrohr mit Abstand umgebenden, starren Außenrohr zwecks Ausbildung eines luftführenden Kanals dazwischen, wobei das Außenrohr in seinem das Ventil des Ventilsackes aufnehmenden Aufsteckbereich Durchbrechungen aufweist.The invention relates to a filler neck for machines, devices or the like for filling valve bags with, in particular, powdery material, consisting of an inner tube guiding the fill material flow and a rigid outer tube surrounding the inner tube at a distance to form an air-guiding channel therebetween, the outer tube has openings in its plug-on area receiving the valve of the valve bag.

Ein solcher bekannter Füllstutzen ist in der US-A-3 118 474 beschrieben. Er weist ein das Füllgut führendes Innenrohr auf, das von einem kegelstumpfförmigen Außenrohr, auf das der zu füllende Ventilsack mit seinem Ventil aufgesteckt wird, umgeben ist. Die beiden Rohre bilden zwischen sich einen im wesentlichen geschlossenen Ringraum aus, wobei das Außenrohr an seinem Vorderende mit zwei umfangsmäßigen Lochreihen versehen ist. Der Ringraum ist an seinem Hinterende durch eine Radialwand geschlossen, die sowohl mit einem Lufteinlaßstutzen als auch mit einem Luftauslabstutzen versehen ist. Beim Füllen des Ventilsackes, der mit seinem Ventil nur auf einer geschlossenwandigen, kurzen Strecke auf dem kegelstumpfförmigen Außenrohr sitzt, sind die in den Ringraum mündenden Lochreihen völlig frei von Ventilmaterial, so daß die Luft aus dem Ventilsack ungehindert in den Ringraum einströmen und von dort über dessen Luftauslabstutzen abgeführt werden kann. Sollten sich die Lochreihen mit Füllgut zugesetzt haben, so wird über den Lufteinlaßstutzen ein Druckluftstoß in den Ringraum gegeben, der die Lochreihen wieder freimacht. Ferner liegt das Sackventil nicht luftdicht am Außenrohr an, wenn der Ventilsack füllbereit am Füllstutzen hängt.Such a known filler neck is described in US-A-3 118 474. It has an inner tube guiding the filling material, which is surrounded by an outer tube in the shape of a truncated cone, onto which the valve bag to be filled is attached with its valve. The two tubes form an essentially closed annular space between them, the outer tube being provided with two rows of holes at the front end. The annular space is closed at its rear end by a radial wall which is provided with both an air inlet socket and an air outlet socket. When filling the valve bag, which sits with its valve only on a closed-walled, short distance on the frustoconical outer tube, the rows of holes opening into the annular space are completely free of valve material, so that the air from the valve bag flows unhindered into the annular space and from there via whose air discharge nozzle can be removed. If the rows of holes with filling material have clogged, a blast of compressed air is injected into the air intake Annulus given that clears the rows of holes again. Furthermore, the bag valve is not airtight on the outer tube when the valve bag hangs ready to fill on the filler neck.

Bei einem anderen bekannten Füllstutzen der vorerwähnten Art (DE-A-20 58 652) ist der Aufsteckbereich des Außenrohres derart ausgebildet, das er einen axialen, im Durchmesser aufweitbaren Abschnitt umfaßt. Ferner ist der zwischen diesen beiden Rohren ausgebildete, luftführende Kanal an eine Druckluftquelle anschließbar. Wenn ein mit pulverförmigem oder rieselfähigem, meistens mit Luft fluidisiertem Füllgut zu füllender Ventilsack auf den Aufsteckabschnitt des Füllstutzens gesteckt worden ist, wird Druckluft in den genannten Kanal geleitet. Dabei dehnt sich der aufweitbare Abschnitt ballig nach außen aus und kommt nur über eine kurze axiale Strecke gegen die Innenwandung des Ventils des zu füllenden Sackes dichtend zur Anlage.In another known filler neck of the aforementioned type (DE-A-20 58 652), 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 named channel. The expandable section expands convexly to the outside and only comes into sealing contact with the inner wall of the valve of the bag to be filled over a short axial distance.

Die Anlage des Sackventiles an diesen bekannten Füllstutzen ist jedoch nicht zufriedenstellend, da sich herausgestellt hat, daß oft gewisse Anteile von Füllgut in den Ventilbereich des Ventilsackes eindringen und dadurch verhindern, daß das Ventil nach dem Abnehmen des gefüllten Sackes vom Füllstutzen absolut sicher schließt. Als Folge hiervon tritt bei der späteren Handhabung der gefüllten Säcke ein stetiger, wenn auch geringer Strom von Füllgut aus dem Sack aus und bedingt somit eine Verschmutzung seiner Umgebung einschließlich der ihn handhabenden Personen. Man ist daher in der Regel genötigt, das Ventil des gefüllten Sackes zusätzlich zu verschließen, und zwar durch Verschweißen oder Verkleben, was einen zusätzlichen Aufwand an Material, Kosten und Zeit bedeutet. Des weiteren muß das Füllen des Sackes schnell vor sich gehen, ohne das der Sack dabei platzt. Man hat daher den Sack im Bereich des Ventiles besonders ausgebildet und perforiert, um eine Austrittsmöglichkeit für die im fluidisierten Füllgut enthaltene Luft zu schaffen. Trotzdem ist die Anzahl der platzenden Säcke aufgrund des Fülldruckes des Füllgutes relativ hoch, weil die Perforation des Ventilbereiches eine gewisse Größe nicht überschreiten darf, um einen Austritt von Sackinhalt zu vermeiden, was jedoch nicht ganz erreicht ist.However, the system of the bag valve on this known filler neck is not satisfactory, since it has been found that certain portions of the filling material often penetrate into the valve area of the valve bag and thereby prevent the valve from closing absolutely securely after the filled bag has been removed from the filler neck. As a result, a steady, albeit small, flow of filling material emerges from the sack during later handling of the filled sacks and thus causes pollution of its surroundings, including the people handling it. It is therefore usually necessary to additionally close the valve of the filled bag by welding or gluing, which means an additional effort in terms of material, costs and time. Furthermore, the filling of the sack must be carried out quickly without the sack bursting. The sack has therefore been specially designed and perforated in the region of the valve in order to create an outlet for the air contained in the fluidized filling material. Nevertheless, the number of bursting bags is relatively high due to the filling pressure of the contents, because the perforation of the valve area must not exceed a certain size in order to prevent the contents of the bag from escaping, but this has not been fully achieved.

Die Aufgabe der Erfindung besteht in der Verbesserung eines Füllstutzens der einleitend angeführten Art dahingehend, daß das Ventil des aufgesteckten Ventilsackes für den Füllvorgang über eine sehr große Strecke dicht am Füllstutzen anliegt und daß das Ventil oder der Sack im Ventilbereich nach dem Füllen keiner weiteren Behandlung bedarf.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 .

Die Lösung der Aufgabe ist in dem Patentanspruch 1 angeführt.The solution to the problem is set out in claim 1.

Durch diese Lösung ist es möglich, daß sich das Ventil eines auf den erfindungsgemäßen Füllstutzen aufgesteckten Ventilsackes entlang der gesamten Berührung zwischen Stutzen und Ventil über eine sehr große axiale Strecke an den Stutzen anlegt, so daß beim Füllvorgang kein Füllgut in das Ventil eindringen kann. Die außerordentlich gute Anlage zwischen dem Füllstutzen und der Ventilinnenwandung wird dadurch unterstützt, daß der zwischen den beiden Rohren ausgebildete Ringkanal mit Unterdruck beaufschlagt wird, wodurch die Ventilinnenwandung im wesentlichen über ihre gesamte Länge an den Füllstutzen fest angesaugt wird. Außerdem wird durch die Absperrbarkeit des Füllstutzens erreicht, daß auch nach dem Beenden des Füllvorganges kein Füllgut beim Abnehmen des gefüllten Sackes vom Füllstutzen aus diesem in das Sackventil nachläuft. Dadurch schließt sich das Ventil des Sackes nach dem Abziehen vom Füllstutzen sicher, so daß ein zusätzliches Verschweißen oder Verkleben des Ventiles nach dem Füllen entfällt. Somit wiederum ist verhindert, daß Füllgut nach dem Füllen in Form eines kleinen, aber stetigen Stromes aus dem Sackventil austritt und seine Umgebung einschließlich Personen verschmutzt.With this solution, it is possible for the valve of a valve bag which is plugged onto the filler neck according to the invention to lie along the entire contact between the neck and the valve over a very large axial distance, so that no filling material can penetrate into the valve during the filling process. The extraordinarily good system between the filler neck and the inner wall of the valve is supported by the fact that the annular channel formed between the two tubes is subjected to negative pressure, as a result of which the inner wall of the valve is firmly sucked onto the filler neck essentially over its entire length. In addition, the fact that the filler neck can be shut off means that even after the filling process has ended, no filling material continues to run from the filler neck into the bag valve when the filled sack is removed. As a result, the valve of the sack closes securely after being removed from the filler neck, so that there is no additional welding or gluing of the valve after filling. This in turn prevents the filling material from exiting the bag valve in the form of a small but steady stream after filling and contaminating its surroundings, including people.

Des weiteren ist ein geometrisch besseres Füllen des Sackes möglich, weil das Füllgut im wesentlichen senkrecht aus dem Füllstutzen nach unten austritt und nicht in einem relativ groben Bogen. Somit baut sich der Füllkegel des Füllgutes im wesentlichen in der Sackmitte auf mit dem Vorteil, daß im Sackoberteil nach dem Füllen weniger freier Raum übrig bleibt, so daß die Säcke aufgrund somit besseren Füllungsgrades eine kleinere Höhenabmessung bei sonst gleicher Breite und Dicke aufweisen können. Eine insoweit bessere Füllung der Säcke ergibt ferner auch eine bessere Stapelfähigkeit derselben auf Paletten, Regalen oder dergleichen.Furthermore, a geometrically better filling of the sack is possible because the filling material emerges from the filling neck essentially vertically and not in a relatively coarse curve. Thus, 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 better filling levels. A better filling of the sacks results also a better stackability of the same on pallets, shelves or the like.

Eine bevorzugte Ausgestaltung der Erfindung besteht darin, daß die Durchbrechungen aus geneigten Schlitzen bestehen, die mit Abstand voneinander um den Umfang des Außenrohres herum vorgesehen sind, wobei die Schlitze derart geneigt zur Längsachse des Außenrohres verlaufen, daß sie - in axialer Projektionsrichtung gesehen - mit ihren Enden wenigstens einander angrenzen, um eine in Umfangsrichtung unterbrechungsfreie Luftabsaugzone zu bilden. Diese Ausgestaltung ist sehr ansaugwirksam und mit geringem Aufwand herzustellen.A preferred embodiment of the invention is that the openings consist of inclined slots which are provided at a distance from one another around the circumference of the outer tube, the slots extending so inclined to the longitudinal axis of the outer tube that they - seen in the axial direction of projection - with their At least adjoin the ends to form a circumferentially uninterrupted air extraction zone. This configuration is very effective in suction and can be produced with little effort.

Eine weitere Ausgestaltung des erfindungsgemäßen Füllstutzens besteht darin, daß das jeweilige Austrittsende des Innenrohres und des Außenrohres in Form eines Kegels oder eines Kegelstumpfes ausgebildet ist, wobei sowohl der Kegel als auch der Kegelstumpf jeweils in ihrem nach unten weisenden Bereich die wenigstens eine Austrittsöffnung für das Füllgut aufweisen. Dabei weist das Außenrohr vorteilhaft noch ein Luftabsaugloch auf.A further embodiment of the filler neck according to the invention is that the respective 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 in their downward-pointing region the at least one outlet opening for the filling material exhibit. The outer tube advantageously also has an air suction hole.

Abgesehen davon, daß hierdurch ein leichteres Aufstecken des Ventilsackes auf den Füllstutzen gegeben ist, ist die Gefahr des Platzens eines Sackes beim Füllen zumindest wesentlich herabgesetzt, weil die aus dem Füllgut entweichende Luft ebenfalls über den Kanal zwischen den beiden Rohren abgeführt werden kann. Dadurch kann die Perforation im Bereich des Ventiles entfallen und das Ventil einfacher ausgebildet sein. Auch ist die Gefahr des Austretens von Füllgut aus einer Perforation nicht mehr gegeben.Apart from the fact that this results in easier fitting of the valve sack onto the filler neck, 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. As a result, the perforation in the region of the valve can be omitted and the valve can be made simpler. There is also no longer any danger of filling material escaping from a perforation.

Die Erfindung ist nachstehend anhand eines in den anliegenden Zeichnungen dargestellten Ausführungsbeispieles näher erläutert. Es zeigen:

  • Figur 1 eine Aufsicht auf das Ausführungsbeispiel mit teilweise dargestelltem, aufgestecktem Ventilsack,
  • Figur 2 eine abgeänderte Ausführungsform des Beispieles nach Figur 1 in teilweiser Aufsicht,
  • Figur 3 eine weitere Ausführungsform des Beispieles nach Figur 1.
The invention is explained below with reference to an embodiment shown in the accompanying drawings. Show it:
  • FIG. 1 shows a top view of the exemplary embodiment with the valve bag partially shown, attached,
  • FIG. 2 shows a modified embodiment of the example according to FIG. 1 in partial supervision,
  • Figure 3 shows another embodiment of the example of Figure 1.

Nach Figur 1 besteht der Füllstutzen aus einem Außenrohr 1 mit einem Befestigungsflansch 2 an seinem Eintrittsende und mit einem Saugrohranschluß 3 in Nähe des Flansches und aus einem Innenrohr 4, das einen kleineren Durchmesser aufweist, derart, daß zwischen ihm und dem Außenrohr 1 ein luftführender Kanal 5 ausgebildet ist. Das koaxial zum starren Außenrohr angeordnete Innenrohr ist in dem Flansch 2 drehbar gelagert und mittels eines Zylinders 6 um die Längsachse 7 des Füllstutzens um einen gewissen Betrag verdrehbar, um noch zu erläuternde Austrittsöffnungen zu verschließen. Die Kolbenstange 8 des Zylinders 6 greift an einem Hebel 9 an, der starr am Innenrohr 4 befestigt ist. Das Außenrohr 1 ist hierzu entsprechend ausgespart und gegenüber dem Innenrohr 4 abgedichtet, wie Figur 1 zeigt.According to Figure 1, 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. For this purpose, the outer tube 1 is recessed accordingly and sealed with respect to the inner tube 4, as shown in FIG. 1.

Im gezeigten Fall sind das Innenrohr 4 und das Außenrohr 1 im Bereich ihres Austrittsendes so ausgebildet, daß sie unter Belassung eines Austrittsbereiches für das Füllgut im übrigen geschlossenwandig ausgebildet sind. Hierzu ist für beide, im Querschnitt kreisrunde Rohre 1,4 eine Kegelausbildung 10,11 vorgesehen, wobei die Kegel ebenfalls einen Abstand voneinander aufweisen, so daß Luft dazwischen strömen kann. In den Kegeln 10,11 sind je zwei Austrittsöffnungen 12, 13 für das Füllgut vorgesehen, und zwar in deren nach unten weisendem Bereich, wie es am besten aus Figur 3 zu erkennen ist.In the case shown, the inner tube 4 and the outer tube 1 are formed 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. For this purpose, 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 air is between them can flow. In the cones 10, 11 there are two outlet openings 12, 13 for the filling material, in their downward-pointing region, as can best be seen from FIG. 3.

Anstelle der Kegel 10,11 können auch Kegelstümpfe vorgesehen sein oder beliebige andere Ausbildungsformen mit entsprechenden Austrittsöffnungen. Auch kann anstelle von jeweils zwei Öffnungen 12,13 nur jeweils eine Öffnung oder deren mehrere als zwei vorgesehen sein. Ferner ist es auch möglich, daß die Kegel 10,11 oder vergleichbaren Ausbildungen fortgelassen sind und statt dessen die Rohre in diesem Bereich so ausgebildet sind, daß sie einen gewissen Eintritt von Luft in den Kanal 5 ermöglichen, die aus dem Füllgut des an dem Füllstutzen hängenden Ventilsackes 14 frei wird, da das Füllgut in bekannter Weise meistens fluidisiert gefördert wird und hierbei relativ viel Luft enthält. Andererseits muß sichergestellt sein, daß Füllgut vom Eintreten in den Kanal abgehalten wird. Eine solche Möglichkeit kann darin bestehen, daß zwischen den beiden Rohren 1 und 4 ein poröser Ring 15, z.B. aus Sintermetall, als Sperrelement eingesetzt ist, wie es gestrichelt in den Figuren 1 und 2 gezeigt ist.Instead of the cones 10, 11, truncated cones can also be provided, or any other form of training with corresponding outlet openings. Instead of two openings 12, 13, only one opening or a plurality thereof as two can be provided. Furthermore, it is also possible for the cones 10, 11 or comparable designs to be omitted and instead for the pipes 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. Such a possibility may consist in that 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.

Jedoch ist es auch möglich, den porösen Ring 15 als Sperrelement vorzusehen, wenn die Kegel 10,11 oder vergleichbare Ausbildungen der Rohre 1,4 als Formgestalt für das Austrittsende des Füllstutzens vorgesehen sind. Hierzu ist dann im äußeren Kegel 10 ein Loch 16 vorgesehen (Figur 1 und 2), durch das Luft aus dem Ventilsack 14 in den Kanal 5 eintreten kann. In diesem Fall kann der poröse Ring 15 auch kurz hinter dem Loch 16 angeordnet sein. Alternativ kann anstelle des porösen Ringes das Loch 16 auch eine Siebabdeckung aufweisen. Die weiter vorstehend angeführte Geschlossenwandigkeit des Außenrohres 1 bleibt durch das Loch 16, das nur Entlüftungsfunktion hat, im wesentlichen erhalten.However, it is also possible to provide the porous ring 15 as a blocking element if the cones 10, 11 or comparable configurations of the pipes 1, 4 are provided as a shape for the outlet end of the filler neck. For this purpose, a hole 16 is then provided in the outer cone 10 (FIGS. 1 and 2) through which air from the valve bag 14 can enter the channel 5. In this case, the porous ring 15 can also be arranged just behind the hole 16. Alternatively, the hole 16 can also have a screen cover instead of the porous ring. The above-mentioned closed wall of the outer tube 1 remains essentially through the hole 16, which only has a ventilation function.

Der Verstettzylinder 6 bewirkt, daß durch Verdrehung des Innenrohres 4 die Austrittsöffnungen 12 dieses Rohres gegenüber den Austrittsöffnungen 13 des Außenrohres 1 so weit gedreht werden, daß die Öffnungen 13 geschlossen sind. Nach Beendigung eines Füllvorganges wird dadurch ein Nachlaufen von Füllgut aus dem Füllstutzen vermieden.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.

Das Außenrohr 1 ist in seinem starren Aufsteckbereich, der in Figur 1 mit A angedeutet ist und das Ventil 17 des Ventilsackes 14 aufnimmt, mit Durchbrechungen versehen, wodurch das Ventil 17 mit seiner Innenwandung gegen diesen starren Bereich des Außenrohres 1 angesaugt wird, wenn über den Anschluß 3 ein Unterdruck auf den Kanal 5 angewendet wird. Somit wird erreicht, daß das Sackventil im wesentlichen über seine gesamte Länge angesaugt wird und auch über diese Länge dichten am Füllstutzen anliegt, so daß beim Füllvorgang kein Füllgut in den Bereich zwischen Füllstutzen und Sackventil eindringt. Die Durchbrechungen erstrecken sich zum einen um den Umfang des Außenrohres 1 herum und umfassen zum anderen in axialer Richtung einen Bereich, der etwa dem Bereich A entspricht.The outer tube 1 is provided with perforations in its rigid plug-on area, which is indicated in FIG. 1 and receives the valve 17 of the valve bag 14, as a result of which the valve 17 is sucked with its inner wall against this rigid area of the outer tube 1 when via the Port 3 a negative pressure is applied to channel 5. It is thus achieved that the bag valve is sucked substantially over its entire length and also tightly abuts 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 area A.

Eine mögliche Ausführungsform der genannten Druchbrechungen besteht gemäß Figur 1 in Form von Schlitzen. Im gezeigten Fall sind es in Bezug auf die Längsachse 7 des Füllstutzens geneigte, einen Abstand voneinander aufweisende Schlitze 18, wobei der Abstand zwischen den Schlitzen derart ist, daß sich die Schlitze - in axialer Projektionsrichtung gesehen - mit ihren Enden überlappen. Die Schlitze 18 sollten wenigstens - ebenfalls in axialer Projektionsrichtung gesehen - aneinander angrenzen, um eine in Umfangsrichtung unterbrechungsfreie Luftabsaugzone zu bilden, wie dies in der Figur 1 gezeigten Konstruktion der Fall ist.According to FIG. 1, one possible embodiment of the openings mentioned is in the form of slots. In the case shown, there are slits 18 that are spaced apart from one another with respect to the longitudinal axis 7 of the filler neck, the distance between the slits being such that the slits — seen in the axial projection direction — overlap with their ends. 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.

Alternativ können sich die Schlitze selbst auch in Umfangsrichtung erstrecken und in mehreren Reihen hintereinander angeordnet sein.Alternatively, the slots themselves can also extend in the circumferential direction and be arranged in a row in several rows.

Eine weitere Ausführungsform der genannten Durchbrechungen besteht gemäß 2 in Form von Bohrungen 19. Im gezeigten Fall sind vier Reihen von Bohrungen 19 vorgesehen, wobei die Bohrungen zweier jeweils einander benachbarter Reihen auf Lücke zueinander versetzt angeordnet sind. Auch hierbei weisen die Bohrungen eine solche Größe auf, daß - in axialer Projektionsrichtung betrachtet - die Bohrungen zumindest aller Reihen eine in Umfangsrichtung unterbreckungsfreie Luftabsaugzone bilden.According to FIG. 2, another embodiment of the openings mentioned is in the form of bores 19. In the case shown, 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. Here, too, 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 free from interruption in the circumferential direction.

Um ein sicheres Anliegen des Ventiles 17 an dem Außenrohr 1 entlang des axialen Bereiches A zu gewährleisten, ist das poröse Sperrelement 15 vor den Schlitzen 18 bzw. vor den Bohrungen 19 vorgesehen, wie es in den Figuren 1 und 2 gestrichelt angedeutet ist. Dadurch ist sichergestellt, daß der Unterdruck in dem Kanal 5 zuerst und hauptsächlich auf den Bereich A wirkt, daß aber auch in gewissem Umfang Luft, die aus dem fluidisierten Füllgut entweicht, durch das Loch 16 hindurch aus dem aufgesteckten Ventilsack abgeführt werden kann.In order to ensure that the valve 17 bears securely against the outer tube 1 along the axial region A, 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.

Eine alternative Ausführung hinsichtlich des Ansaugens des Ventiles 17 an das Außenrohr 1 und der Luftabführung aus dem Sack während des Füllvorganges besteht darin, daß unter Wegfall des Elementes 15 ein gesonderter Luftabführungsweg für die aus dem aufgesteckten Sack kommende Luft vorgesehen ist, wie Figur 3 zeigt. Zum Beispiel ist hierfür eine Rohrleitung 20 vorgesehen, die im wesentlichen innerhalb des Innenrohres 4 verläuft. Diese Rohrleitung durchdringt in dem Füllgutaustrittsendbereich des Füllstutzens abgedichtet jeweils das Innenrohr 4 und das Außenrohr 1 und mündet ins Freie aus. Andererseits durchdringt die Rohrleitung beide Rohre in Nähe des anderen Endes des Füllstutzens und ist an eine (nicht gezeigte) Luftabsaugquelle anschließbar, während der Kanal 5 über den Anschluß 3 an eine (nicht gezeigte) Unterdruckquelle anschließbar ist.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. For example, 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).

Der vorstehend beschriebene Füllstutzen kann an allen Maschinen, Vorrichtungen oder dergleichen zum Füllen von Füllgut in Ventilsäcke verwendet werden. Das Füllgut besteht im allgemeinen aus pulverförmigen Füllgut, vorzugsweise solches aus dem Bereich des Bauwesens, oder aus rieselfähigem Füllgut. Insbesondere pulverförmiges Füllgut wird im wesentlichen fluidisiert in einen Ventilsack gefördert bzw. gefüllt.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. In particular, powdered filling material is conveyed or filled into a valve bag in a substantially fluidized manner.

Claims (5)

  1. Filling pipe for machines, apparatuses or the like for filling valve bags in particular with powdered material, consisting of an inner pipe (4) which guides the stream of material and a rigid outer pipe (1) surrounding the inner pipe at a distance for the purpose of forming an air-conducting channel (5) therebetween, wherein the outer pipe (1) comprises apertures (18, 19) in its attachment region which receives the valve (17) of the valve bag (14), characterised in that these apertures (18, 19) serve for sealing abutment of the bag valve (17) against this region (A) when partial pressure is applied in the channel (5) and extend over the length of the attachment region (A) in the axial direction of the outer pipe (1), that in each case the outlet end region of the inner pipe (4) and outer pipe (1) is shaped in such a way in the section before the apertures (18, 19) that the pipes in their downwardly pointing region comprise at least one outlet opening (12, 13) and moreover have closed walls, and that the inner pipe (4) can be turned on its longitudinal axis (7) in order to close the outlet end of the filling pipe.
  2. Filling pipe according to claim 1, characterised in that the apertures, which are designed as slots (18), are at an angle to the longitudinal axis (7) of the outer pipe (1), such that, as seen in the direction of axial projection, they at least adjoin each other by their ends in order to form an air suction zone which is free from interruptions in the circumferential direction.
  3. Filling pipe according to claim 1, characterised in that the respective outlet end region of the inner pipe (4) and outer pipe (1) is in the form of a cone (10, 11) or truncated cone and that the cone or truncated cone in each case comprises in its downwardly pointing region the outlet opening (12, 13) for the filling material, of which there is at least one.
  4. Filling pipe according to claim 1, characterised in that the channel (5) is provided with an air-permeable barrier element (15) in the region of the filling material outlet end of the filling pipe before the apertures (18, 19).
  5. Filling pipe according to claim 1, characterised in that a separate air removal path (20) is provided in it for the air coming from the interior of an attached valve bag and that the air removal path (20) is formed by a tube which extends essentially within the inner pipe (4), passes through the latter in sealed relationship in its filling material outlet end region and opens out into the atmosphere at the closed end of the outer pipe (1), passing through same (16).
EP89103849A 1988-03-22 1989-03-04 Filling supports for machines, devices or the like for filling valve bags Expired - Lifetime EP0334085B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89103849T ATE80104T1 (en) 1988-03-22 1989-03-04 FILLING FITTINGS FOR MACHINES, DEVICES OR THE LIKE FOR FILLING VALVE BAGS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3809593A DE3809593A1 (en) 1988-03-22 1988-03-22 FILLING SLEEVES FOR MACHINES, DEVICES OR THE LIKE FOR FILLING VALVE BAGS
DE3809593 1988-03-22

Publications (2)

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

Family

ID=6350365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89103849A Expired - Lifetime EP0334085B1 (en) 1988-03-22 1989-03-04 Filling supports for machines, devices or the like for filling valve bags

Country Status (4)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9000346U1 (en) * 1990-01-13 1990-04-05 Greif-Werk Maschinenfabrik Gmbh, 2400 Luebeck, De

Family Cites Families (5)

* 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 (en) * 1962-06-06 1963-05-17 Black Products Co Automatic air discharge spout
DE2058652C3 (en) * 1970-11-28 1973-09-20 Erwin Behn Verpackungsbedarf Gmbh, 4150 Krefeld Valve bag filling machine with a filling nozzle, which has Ent air ducts on its outside to divert the air
US4344468A (en) * 1979-06-06 1982-08-17 E. I. Du Pont De Nemours And Company Process and apparatus for packaging

Also Published As

Publication number Publication date
ATE80104T1 (en) 1992-09-15
EP0334085A1 (en) 1989-09-27
DE58902170D1 (en) 1992-10-08
DE3809593A1 (en) 1989-10-12
ES2035396T3 (en) 1993-04-16

Similar Documents

Publication Publication Date Title
DE1625197A1 (en) Distributor
DE3131545C2 (en) Device for applying foam
EP0103900B1 (en) Fluidized bed apparatus
EP1232003A2 (en) Device for coating particles
EP0076472B1 (en) Apparatus for uniformly distributing a stream of bulk material
DE3003919C2 (en)
DE2820454A1 (en) COOLING AND SEPARATION SYSTEM FOR CASTINGS AND MOLDING SAND
EP0564851B1 (en) Device for loading granulate
DE4138997A1 (en) DEVICE FOR DRAGING PIECE PRODUCTS, IN PARTICULAR PILLS AND TABLETS
EP0505707B1 (en) Rotary valve
CH643982A5 (en) DEVICE AND METHOD FOR SEPARATING AND DEPOSITING SEEDS, IN PARTICULAR SEEDS.
EP0334085B1 (en) Filling supports for machines, devices or the like for filling valve bags
DE2254490B2 (en) Device for separating waste fibers from an air stream
DE60021567T2 (en) SLAUGHTER FOR UNLOADING SHOPS
DE2328830C3 (en) Centrifuge, in particular sugar centrifuge
DE1577805A1 (en) Container seal
EP0900164B1 (en) Process and device for avoiding product dust or product gas emission when decanting with solid or liquid dosage systems
DE102008039211A1 (en) Pipe target with end block for coolant supply
DE3834810C2 (en)
EP1024904B1 (en) Device for applying a thin coat on the surface of a screen of a cathode-ray tube
EP4274675B1 (en) Method for treating particulate material in a fluidizing device
EP4274676B1 (en) Fluidizing apparatus for the treatment of particulate material
DE3037860A1 (en) GAS FILTER
DE102021200162A1 (en) Fluidizing apparatus for treating particulate material
EP1145999A1 (en) Device for filling a container, container and lid therefor

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

Kind code of ref document: A1

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

17P Request for examination filed

Effective date: 19900327

17Q First examination report despatched

Effective date: 19910220

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

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

REF Corresponds to:

Ref document number: 80104

Country of ref document: AT

Date of ref document: 19920915

Kind code of ref document: T

REF Corresponds to:

Ref document number: 58902170

Country of ref document: DE

Date of ref document: 19921008

ITF It: translation for a ep patent filed

Owner name: FUMERO BREVETTI S.N.C.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2035396

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 89103849.9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19950310

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19950313

Year of fee payment: 7

Ref country code: FR

Payment date: 19950313

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19950322

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19950324

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19950328

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19950331

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19960304

Ref country code: AT

Effective date: 19960304

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19960305

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19960305

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19960331

BERE Be: lapsed

Owner name: GREIF-WERK MASCHINENFABRIK G.M.B.H.

Effective date: 19960331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19961001

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19960304

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19961129

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19961001

EUG Se: european patent has lapsed

Ref document number: 89103849.9

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19990405

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20000329

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050304