EP0438794B1 - Filling nozzle for filling machines for filling valve bags - Google Patents

Filling nozzle for filling machines for filling valve bags Download PDF

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Publication number
EP0438794B1
EP0438794B1 EP90125633A EP90125633A EP0438794B1 EP 0438794 B1 EP0438794 B1 EP 0438794B1 EP 90125633 A EP90125633 A EP 90125633A EP 90125633 A EP90125633 A EP 90125633A EP 0438794 B1 EP0438794 B1 EP 0438794B1
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EP
European Patent Office
Prior art keywords
filling
inner tube
outer tube
valve
filling material
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
EP90125633A
Other languages
German (de)
French (fr)
Other versions
EP0438794A1 (en
Inventor
Harry-Dieter Ing. Rasmussen
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 AT90125633T priority Critical patent/ATE98588T1/en
Publication of EP0438794A1 publication Critical patent/EP0438794A1/en
Application granted granted Critical
Publication of EP0438794B1 publication Critical patent/EP0438794B1/en
Anticipated expiration legal-status Critical
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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
    • 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

Definitions

  • the invention relates to a filler neck for filling machines for filling valve sacks, with an outer tube, via which the valve sacks to be filled can be plugged with their valve opening, and an inner tube arranged in the outer tube for guiding the filling material and with a device for closing the inner tube.
  • Such a filling support is known from DE-A-38 09 593. It serves to fill valve sacks with, in particular, powdery filling material and consists of an inner tube guiding the filling material flow and an outer tube surrounding it, forming an intermediate space, the intermediate space being able to be acted upon by vacuum, which is created by openings in the wall of the outer tube at which it is filled attached valve bag attacks and its bag valve at the filler neck.
  • a suction channel which is connected to the interior of the valve sack, is also provided for extracting the air displaced during filling.
  • the outer and inner tubes each end at their front ends in an end cone, in the lateral surfaces of which an outlet opening is arranged.
  • the inner tube is designed to be rotatable about its axis, so that a rotation thereof relative to the outer tube enables the outlet openings to be congruent with one another or to be offset from one another for the purpose of closing the filler neck.
  • This filler neck is a complex construction and also leaves something to be desired in so far as contamination of the bag valve, which means a leaky valve, cannot be avoided with certainty.
  • the advantages that can be achieved in this way are, in particular, that the control of the proposed filler neck takes place automatically, that is to say without additional control means, and contamination of the bag valve is excluded.
  • the closure flap is provided with an adjustable stop to limit the opening angle of the closure flap and, in its open position, serves as a guide surface for deflecting the Product flow. The direction of the product flow can thus be controlled, so that it can be ensured that the suction channel is kept free of product.
  • the outlet cross-section of the filler neck can be influenced by adjusting the maximum opening angle of the closure flap, so that a compression effect, particularly important in the case of air-containing contents, can be achieved.
  • the filler neck according to the invention consists of an inner tube 1 carrying the filling material, which is surrounded by an outer tube 2, onto which the valve sacks to be filled can be plugged with their sack valve. A distance is left between the inner tube 1 and the outer tube 2, so that an intermediate space 3 is formed which can be ring-shaped according to FIG. 2 and crescent-shaped according to FIG.
  • the outer tube 2 is slightly curved in the region of its free end and is provided with an obliquely downward-pointing outlet opening 4, which is formed by a cross section through the curvature and obliquely to the axis of the filler neck.
  • the inner tube 1 ends in an opening 5 located opposite the outlet opening 4, which opening is formed by an oblique cut through the inner tube 1, which is guided such that the upper part of the opening 5 springs back relative to the lower part.
  • the opening 5 is kept closed by a flap 6 which is in the region of the Upper part of the opening 5 arranged, horizontally and transversely to the axis of the filler neck axis 7 is pivotally mounted.
  • the closure flap 6 lies with its own weight on the end face of the inner tube 1.
  • the pivoting path of the closure flap 6 is limited by an adjustable stop 8 which, in the open position of the closure flap 6, bears against the inner wall of the outer tube 2.
  • the intermediate space 3 is provided with a suction connection 4 b and is closed at the end in its lower area 4 a in order to prevent the entry of filling material into the suction area.
  • this closure results from a non-coaxial arrangement of the inner tube 2.
  • the longitudinal axes of the two tubes are offset such that in the lower region of the filler neck the outer wall of the inner tube 1 is connected to the inner wall of the outer tube 2 Facility is coming.
  • the embodiment according to FIG. 4 is based on a filler neck made of a hollow profile 9, which has an approximately rectangular cross section and is divided into two cavities 11 and 12 by a partition wall 10. While one cavity 11 is used to guide the flow of the filling material, the other cavity 12 is used to extract the air displaced from the valve bags when they are filled.
  • the closure flap 7 is advantageously articulated here by means of a fork joint 13.
  • the closure flap 6 Due to the inclined position of the closure flap 6, a gravity component holding the same in the closed position remains effective on it and can be overcome by the flow of the filling material.
  • the closure flap 6 can act as an impact shield, which deflects the flow of the filling material downwards.
  • the weight of the closure flap 6 also causes a backflow in the product flow, so that a desired pre-compaction, in particular air-containing product, is achieved.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Supply Of Fluid Materials To The Packaging Location (AREA)

Abstract

What is described is a filling nozzle for filling machines for filling valve bags, which has an outer tube (2), over which the valve bags to be filled can be slipped with their valve orifice, and an inner tube (1) arranged in the outer tube (2) and for guiding the filling material, as well as a device (6) for closing the inner tube. The device (6) is designed as a closing cap which is provided on the inner tube (1) at its filling-material outlet end and which dwells in its closed position as a result of the effect of gravity and can be pivoted into the open position by the stream of filling material. <IMAGE>

Description

Die Erfindung betrifft einen Füllstutzen für Füllmaschinen zum Füllen von Ventilsäcken, mit einem Außenrohr, über welches die zu füllenden Ventilsäcke mit ihrer Ventilöffnung aufsteckbar sind, und einem in dem Außenrohr angeordneten Innenrohr zur Führung des Füllgutes sowie mit einer Einrichtung zum Verschließen dem Innenrohres.The invention relates to a filler neck for filling machines for filling valve sacks, with an outer tube, via which the valve sacks to be filled can be plugged with their valve opening, and an inner tube arranged in the outer tube for guiding the filling material and with a device for closing the inner tube.

Bei der Füllung von Behältnissen mit unterschiedlichsten Füllgütern kommt es grundsätzlich darauf an, daß das vorgesehene Füllgewicht bzw. Füllvolumen präzise erreicht und eingehalten wird.When filling containers with a wide variety of filling goods, it is essential that the intended filling weight or filling volume is precisely achieved and maintained.

Ein solcher Füllstützen ist aus der DE-A- 38 09 593 bekannt. Er dient zum Füllen von Ventilsäcken mit insbesondere pulverförmigem Füllgut und besteht aus einem den Füllgutstrom führenden Innenrohr und einem dieses unter Bildung eines Zwischenraums umgebenden Außenrohr, wobei der Zwischenraum mit Vakuum beaufschlagbar ist, das durch Durchbrüche in der Wandung des Außenrohres an dem zum Füllen auf dieses aufgesteckten Ventilsack angreift und dessen Sackventil an dem Füllstutzen zur Anlage bringt. Zum Absaugen der beim Füllen verdrängten Luft ist weiter ein mit dem Innern des Ventilsacks in Verbindung stehender Absaugkanal vorgesehen. Das Außen- und das Innenrohr enden je an ihrem vorderen Ende in einem Abschlußkegel, in deren Mantelflächen jeweils eine Austrittsöffnung angeordnet ist. Das Innenrohr ist um seine Achse drehbar ausgebildet, so daß eine Verdrehung desselben gegenüber dem Außenrohr ermöglicht, die Austrittsöffnungen in Kongruenz zueinander zu bringen oder diese zwecks Verschluß des Füllstutzens gegeneinander zu versetzen.Such a filling support is known from DE-A-38 09 593. It serves to fill valve sacks with, in particular, powdery filling material and consists of an inner tube guiding the filling material flow and an outer tube surrounding it, forming an intermediate space, the intermediate space being able to be acted upon by vacuum, which is created by openings in the wall of the outer tube at which it is filled attached valve bag attacks and its bag valve at the filler neck. A suction channel, which is connected to the interior of the valve sack, is also provided for extracting the air displaced during filling. The outer and inner tubes each end at their front ends in an end cone, in the lateral surfaces of which an outlet opening is arranged. The inner tube is designed to be rotatable about its axis, so that a rotation thereof relative to the outer tube enables the outlet openings to be congruent with one another or to be offset from one another for the purpose of closing the filler neck.

Dieser Füllstutzen stellt eine aufwendige Konstruktion dar und läßt darüber hinaus insofern zu wünschen übrig, als eine einem undichten Ventil gleichbedeutende Verunreinigung des Sackventils nicht sicher vermeidbar ist.This filler neck is a complex construction and also leaves something to be desired in so far as contamination of the bag valve, which means a leaky valve, cannot be avoided with certainty.

Es ist daher die Aufgabe der Erfindung, den bekannten Füllstutzen hinsichtlich der vorstehend dargelegten Mängel zu verbessern.It is therefore the object of the invention to improve the known filler neck with regard to the deficiencies set out above.

Ausgehend von der einleitend angeführten Gattung des Füllstutzens wird diese Aufgabe durch die Merhmale des kennzeichrenden Teils der Anspruch gelöst,Starting from the introductory type of the filler neck, this object is achieved by the features of the characterizing part of the claim.

Die damit erzielbaren Vorteile bestehen insbesondere darin, daß die Steuerung des vorgeschlagenen Füllstutzens selbsttätig, das heißt ohne zusätzliche Steuermittel erfolgt und eine Verunreinigung des Sackventils ausgeschlossen ist. Die Verschlußklappe ist mit einem einstellbaren Anschlag zur Begrenzung des Öffnungswinkels der Verschlußklappe versehen und dient in ihrer Offenstellung als Leitfläche für eine Umlenkung des Füllgutstroms. Damit läßt sich die Richtung des Füllgutstromes steuern, so daß sichergestellt werden kann, daß der Absaugkanal von Füllgut freigehalten wird. Darüber hinaus läßt sich durch Einstellung des maximalen Öffnungswinkels der Verschlußklappe der Austrittquerschnitt des Füllstutzens beeinflussen, so daß ein insbesondere bei lufthaltigem Füllgut wichtiger Komprimiereffekt erzielbar ist.The advantages that can be achieved in this way are, in particular, that the control of the proposed filler neck takes place automatically, that is to say without additional control means, and contamination of the bag valve is excluded. The closure flap is provided with an adjustable stop to limit the opening angle of the closure flap and, in its open position, serves as a guide surface for deflecting the Product flow. The direction of the product flow can thus be controlled, so that it can be ensured that the suction channel is kept free of product. In addition, the outlet cross-section of the filler neck can be influenced by adjusting the maximum opening angle of the closure flap, so that a compression effect, particularly important in the case of air-containing contents, can be achieved.

Der erfindungsgemäße Füllstutzen ist nachstehend anhand eines in der Zeichnung dargestellten Ausführungsbeispieles näher erläutert. Es zeigt:

Figur 1
einen Längsschnitt durch den erfindungsgemäßen Füllstutzen,
Figuren 2 bis 4
einige Ausführungsvarianten der Verschlußklappe, in Stirnansicht dargestellt.
The filler neck according to the invention is explained below with reference to an embodiment shown in the drawing. It shows:
Figure 1
a longitudinal section through the filler neck according to the invention,
Figures 2 to 4
some variants of the shutter, shown in front view.

Der erfindungsgemäße Füllstutzen besteht aus einem das Füllgut führenden Innenrohr 1, das von einem Außenrohr 2 umgeben ist, auf das die zu füllenden Ventilsäcke mit ihrem Sackventil aufsteckbar sind. Zwischen dem Innenrohr 1 und dem Außenrohr 2 ist ein Abstand belassen, so daß ein Zwischenraum 3 gebildet wird, der nach Figur 2 ringförmig und nach Figur 3 halbmondförmig sein kann. Das Außenrohr 2 ist im Bereich seines freien Endes leicht gekrümmt ausgeführt und mit einer schräg nach unten weisenden Austrittsöffnung 4 versehen, die durch einen durch die Krümmung und schräg zu der Achse des Füllstutzens gelegten Querschnitt gebildet ist. Das Innenrohr 1 endet in einer gegenüber der Austrittsöffnung 4 zurückliegenden Öffnung 5, die durch einen Schrägschnitt durch das Innenrohr 1 gebildet wird, der so geführt ist, daß der obere Teil der Öffnung 5 gegenüber dem unteren Teil zurückspringt. Die Öffnung 5 wird durch eine Verschlußklappe 6 verschlossen gehalten, die um eine im Bereich des oberen Teiles der Öffnung 5 angeordnete, horizontal und quer zu der Achse des Füllstutzens ausgerichtete Achse 7 schwenkbar gelagert ist. Die Verschlußklappe 6 liegt mit ihrem Eigengewicht auf der Stirnfläche des Innenrohres 1 auf. Der Schwenkweg der Verschlußklappe 6 wird durch einen einstellbaren Anschlag 8 begrenzt, der sich in der Öffnungsstellung der Verschlußklappe 6 gegen die Innenwandung des Außenrohres 2 anlegt.The filler neck according to the invention consists of an inner tube 1 carrying the filling material, which is surrounded by an outer tube 2, onto which the valve sacks to be filled can be plugged with their sack valve. A distance is left between the inner tube 1 and the outer tube 2, so that an intermediate space 3 is formed which can be ring-shaped according to FIG. 2 and crescent-shaped according to FIG. The outer tube 2 is slightly curved in the region of its free end and is provided with an obliquely downward-pointing outlet opening 4, which is formed by a cross section through the curvature and obliquely to the axis of the filler neck. The inner tube 1 ends in an opening 5 located opposite the outlet opening 4, which opening is formed by an oblique cut through the inner tube 1, which is guided such that the upper part of the opening 5 springs back relative to the lower part. The opening 5 is kept closed by a flap 6 which is in the region of the Upper part of the opening 5 arranged, horizontally and transversely to the axis of the filler neck axis 7 is pivotally mounted. The closure flap 6 lies with its own weight on the end face of the inner tube 1. The pivoting path of the closure flap 6 is limited by an adjustable stop 8 which, in the open position of the closure flap 6, bears against the inner wall of the outer tube 2.

Der Zwischenraum 3 ist mit einem Absauganschluß 4 b versehen und an der Stirnseite in seinem unteren Bereich 4a verschlossen, um den Eintritt von Füllgut in den Absaugbereich zu verhindern. Dieser Verschluß ergibt sich bei der Ausführung nach Figur 3 durch eine nicht-koaxiale Anordnung des Innenrohres 2. Dabei ist die Versetzung der Längsachsen der beiden Rohre derart vorgesehen, daß im unteren Bereich des Füllstutzens die Außenwand des Innenrohres 1 an der Innenwand des Außenrohres 2 zur Anlage kommt.The intermediate space 3 is provided with a suction connection 4 b and is closed at the end in its lower area 4 a in order to prevent the entry of filling material into the suction area. In the embodiment according to FIG. 3, this closure results from a non-coaxial arrangement of the inner tube 2. The longitudinal axes of the two tubes are offset such that in the lower region of the filler neck the outer wall of the inner tube 1 is connected to the inner wall of the outer tube 2 Facility is coming.

Die Ausführung nach Figur 4 geht von einem Füllstutzen aus einem Hohlprofil 9 aus, das einen etwa rechteckigen Querschnitt aufweist und durch eine Trennwand 10 in zwei Hohlräume 11 und 12 aufgeteilt ist. Während der eine Hohlraum 11 zur Führung des Füllgutstromes benutzt wird, dient der andere Hohlraum 12 der Absaugung der beim Füllen der Ventilsäcke aus diesen verdrängten Luft. Die Verschlußklappe 7 ist hier zweckmäßig mittels eines Gabelgelenkes 13 angelenkt.The embodiment according to FIG. 4 is based on a filler neck made of a hollow profile 9, which has an approximately rectangular cross section and is divided into two cavities 11 and 12 by a partition wall 10. While one cavity 11 is used to guide the flow of the filling material, the other cavity 12 is used to extract the air displaced from the valve bags when they are filled. The closure flap 7 is advantageously articulated here by means of a fork joint 13.

Durch die Schräglage der Verschlußklappe 6 bleibt eine dieselbe in Schließstellung haltende Schwerkraftkomponente an dieser wirksam, die durch den Füllgutstrom überwindbar ist. Durch Begrenzung des Öffnungswinkels mittels des Anschlages 8 kann die Verschlußklappe 6 als Prallschild fungieren, das den Füllgutstrom nach unten ablenkt. Das Eigengewicht der Verschlußklappe 6 bewirkt darüber hinaus einen Rückstau in dem Füllgutstrom, so daß dadurch eine erwünschte Vorkompession insbesondere lufthaltigem Füllgut erreicht wird.Due to the inclined position of the closure flap 6, a gravity component holding the same in the closed position remains effective on it and can be overcome by the flow of the filling material. By limiting the opening angle by means of the stop 8, the closure flap 6 can act as an impact shield, which deflects the flow of the filling material downwards. The weight of the closure flap 6 also causes a backflow in the product flow, so that a desired pre-compaction, in particular air-containing product, is achieved.

Claims (1)

  1. A filling connection for filling machines for the filling of valve bags, with an outer tube (2), over which the valve bags which are to be filled are able to be placed with their valve opening, and with an inner tube (1) arranged in the outer tube (2) to carry the filling material and also with a device (6) for closing the inner tube, characterised in that the outer tube (2) is provided at its free end with an outlet opening (4) pointing obliquely downwards, that the inner tube (1) has an outlet opening (5) lying back with respect to the outlet opening (4) and pointing obliquely upwards, that the outlet opening (5) of the inner tube (1) is provided with a closure flap (6), which through the effect of gravity remains in its closed position and is pivotable into open position through the stream of filling material, that the closure flap (6) is provided with an adjustable stop (8), striking in the open position of the flap (6) against the inner wall of the outer tube (2), to delimit its opening angle, and that the closure flap in its open position forms a guide surface for a deflection of the stream of filling material.
EP90125633A 1990-01-13 1990-12-28 Filling nozzle for filling machines for filling valve bags Expired - Lifetime EP0438794B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90125633T ATE98588T1 (en) 1990-01-13 1990-12-28 FILLING PIPE FOR FILLING MACHINES FOR FILLING VALVE BAGS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9000346U 1990-01-13
DE9000346U DE9000346U1 (en) 1990-01-13 1990-01-13 Filling nozzle for filling machines for filling valve bags

Publications (2)

Publication Number Publication Date
EP0438794A1 EP0438794A1 (en) 1991-07-31
EP0438794B1 true EP0438794B1 (en) 1993-12-15

Family

ID=6850008

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90125633A Expired - Lifetime EP0438794B1 (en) 1990-01-13 1990-12-28 Filling nozzle for filling machines for filling valve bags

Country Status (3)

Country Link
EP (1) EP0438794B1 (en)
AT (1) ATE98588T1 (en)
DE (2) DE9000346U1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4103945C1 (en) * 1991-02-09 1992-05-27 Natronag Gesellschaft Fuer Verpackungssysteme Mbh, 3380 Goslar, De Bag filling machine with tube for bag valve - has tube shutter with stop part pulled by cable against tube mouth

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3815629A (en) * 1971-07-26 1974-06-11 J Oberholtzer Sewer relief valve
DE3809593A1 (en) * 1988-03-22 1989-10-12 Greif Werk Masch FILLING SLEEVES FOR MACHINES, DEVICES OR THE LIKE FOR FILLING VALVE BAGS
US4887792A (en) * 1988-10-06 1989-12-19 Kuo Ping Song Stop-check valve

Also Published As

Publication number Publication date
EP0438794A1 (en) 1991-07-31
DE9000346U1 (en) 1990-04-05
DE59003891D1 (en) 1994-01-27
ATE98588T1 (en) 1994-01-15

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