EP0185958B1 - Method and apparatus for metering a free-flowing product - Google Patents

Method and apparatus for metering a free-flowing product Download PDF

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Publication number
EP0185958B1
EP0185958B1 EP85115126A EP85115126A EP0185958B1 EP 0185958 B1 EP0185958 B1 EP 0185958B1 EP 85115126 A EP85115126 A EP 85115126A EP 85115126 A EP85115126 A EP 85115126A EP 0185958 B1 EP0185958 B1 EP 0185958B1
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EP
European Patent Office
Prior art keywords
housing
cleaning
measuring container
rotary slider
opening
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
EP85115126A
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German (de)
French (fr)
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EP0185958A2 (en
EP0185958A3 (en
Inventor
Manfred Dipl.-Ing. Nordmeyer
Helmut Grüne
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.)
Lieder Maschinenbau GmbH and Co KG
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Lieder Maschinenbau GmbH and Co KG
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Application filed by Lieder Maschinenbau GmbH and Co KG filed Critical Lieder Maschinenbau GmbH and Co KG
Priority to AT85115126T priority Critical patent/ATE80105T1/en
Priority to CA000501473A priority patent/CA1267391A/en
Publication of EP0185958A2 publication Critical patent/EP0185958A2/en
Publication of EP0185958A3 publication Critical patent/EP0185958A3/en
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    • 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
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/26—Methods or devices for controlling the quantity of the material fed or filled
    • B65B3/30—Methods or devices for controlling the quantity of the material fed or filled by volumetric measurement
    • B65B3/32—Methods or devices for controlling the quantity of the material fed or filled by volumetric measurement by pistons co-operating with measuring chambers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/4238—With cleaner, lubrication added to fluid or liquid sealing at valve interface
    • Y10T137/4358—Liquid supplied at valve interface

Definitions

  • the invention relates to a method for measuring a fillable product with a measuring container rotatably mounted in a housing, with which the fillable product is measured and after a rotation of the measuring container is dispensed into a packaging unit, in which, for the purpose of cleaning, a between the housing and the measuring container provided gap is flushed through by a cleaning liquid.
  • a filling device in which a separating joint is provided between the housing and the rotary valve.
  • the outer wall of the rotary slide valve is opposite the inner wall of the housing.
  • the rotary valve as well as the inner bore provided in the housing, in which the rotary valve is mounted, are cylindrical.
  • the parting line therefore has a gap width that corresponds to the usual gap width of a plain bearing.
  • the object of the present invention is therefore to improve the method of the type mentioned in the introduction so that the rotary valve can be cleaned easily and thoroughly, and the filling of the product only has to be interrupted for a short time.
  • the measuring container is moved in its longitudinal direction within the housing from a filling and starting position in which the product is measured to a cleaning position in which the cleaning is carried out, and by this displacement the gap to intensive rinsing with the cleaning liquid is widened.
  • the surfaces of the rotary valve which delimit the gap on both sides, and the housing bore, on the other hand, are reached by the cleaning liquid and thoroughly washed around. Existing food residues are washed away. After cleaning is complete, the gap is carefully rinsed so that all of the cleaning liquid is removed from the gap. Immediately after completion of the Flushing, the rotary valve is returned to its filling and starting position, so that the filling of the product can be continued without significant loss of time.
  • a device suitable for carrying out the method according to the invention essentially consists of a housing 1, a rotary valve 2 and a piston head 3.
  • the rotary valve 2 is guided in an interior space 5 which is formed within the housing 1.
  • the rotary valve 2 is mounted displaceably both about its longitudinal axis and in the axial direction.
  • the rotary slide valve 2 has an outer surface 6 facing the housing 1, which slidably acts on an inner surface 7 of the housing opposite it, which delimits the interior 5.
  • the rotary valve 2 is designed as a measuring container, in the interior of which a cavity 8 is provided.
  • This cavity 8 extends in the axial direction of the rotary valve 2 and is cylindrical.
  • the cavity 8 can consist of a tubular, aerodynamically angled connecting part 61 which connects the cylinder part 23 to an opening 39. Due to the streamlined design, the connecting part 61 is particularly well suited to fill and measure viscous fillers in the cylinder part 23.
  • the connection between the opening 39 and the cylinder part 23 can, however, also be established by a simple bore which extends from the outer surface 6 into the cylinder part 23.
  • the piston head 3 slides in the axial direction, to which a piston rod 9 is attached, which protrudes from the rotary valve 2 with its end 10 opposite the piston head 3. This is closed at its end 12 adjacent to the end 10 of the piston rod 9 by a wall 11 which is penetrated by an opening 13.
  • the piston rod 9 is guided in this opening 13.
  • This has a square cross section 14, so that the opening 13 also has a corresponding square cross section 14.
  • a coupling device 15 is provided at the end 10 of the piston rod 9, to which a drive (not shown) which moves the piston rod 9 can be coupled.
  • This coupling device 15 is designed as a bore which penetrates the piston rod 9 transversely to the longitudinal direction thereof.
  • annular groove 16 is embedded in the wall 11, the mutually opposite walls of which extend in the radial direction are designed as sliding surfaces 17, 18.
  • a coupling 19 slides on these sliding surfaces 17, 18 and is connected to a drive, not shown, which is capable of displacing the rotary valve 2 in the axial direction.
  • the end of the rotary valve 2 protrudes 12 from a rear part 20 of the housing 1.
  • the groove 16 is provided on this end 12 protruding from the housing 1.
  • the outer surface 6 tapers towards its opposite front end 21 in such a way that the cross sections from the rear end 12 taper towards the front end 21.
  • the inner surface 7 of the interior 5 is also conical, so that it has its largest cross-section in the region of its rear part 20.
  • the cavity 8 is formed at its end adjacent to the wall 11 as a cleaning chamber 22.
  • This has a larger cross section than the cylinder part 23 facing the front part 21.
  • the piston head 3 slides in the cylinder part and carries a piston sleeve 24 at its end adjacent to the piston rod 9.
  • This piston sleeve 24 provides with its outer surface 25 for a pressure-tight seal of the piston head 3 within the cylinder part 23, the cross section of which is dimensioned such that the piston sleeve sliding in it is guided with such a close fit that it is capable of generating a negative or positive pressure within the cylinder part 23 depending on the direction of movement.
  • a transition zone 26 is provided, in which the cross section of the cylinder part 23 continuously expands to the cross section of the cleaning chamber 22.
  • access openings 27 are provided for a cleaning liquid which is supplied via a cleaning connection 28 .
  • This cleaning connection 28 is connected via a distributor 29 to two connections 3o, 31 which open through the housing 1 into the interior 5.
  • the distributor 29 is arranged in the axial direction on an outer surface 32 of the housing 1 opposite the inner surface 7.
  • the rear connection 31 facing the rear part 2o has an orifice aligned with the access openings 27.
  • the front connection 3o opposite the rear connection 31 is provided with an opening which opens approximately in the middle of the interior 5.
  • a further cleaning connection 33 is provided on a front end 34 of the housing 1 which is adjacent to the front end 21. This cleaning connection 33 is aligned with an access opening 35 which opens into the interior 5 in the region of the front end 21.
  • a further cleaning connection 36 is provided in the region of an inlet 37, through which a product to be filled enters the housing 1 via a bore 38 and from there via an opening 39 into the cylinder part 23 of the cavity 8.
  • the inlet 37 can be designed as a pipeline, which is firmly connected to a correspondingly designed flange 40, which surrounds the bore 38 and is firmly connected to the housing 1.
  • the housing 1 is provided at its front end 34 with a bore 41, the cross section of which is smaller than or equal to that of the interior 5 adjacent to it.
  • This bore 41 is closed by a cap 42 which is guided in the bore 41 with a collar 43.
  • This collar 43 is adjoined in the direction of the interior 5 by a bearing pin 44, the cross section of which corresponds to the cross section of the cylinder part 23 into which the bearing pin 44 protrudes.
  • the rotary valve 2 is guided in the region of its front end 21 on this journal 44.
  • This cap 42 is delimited on its outer side facing away from the journal 44 by a cover surface 45 which projects beyond the collar 43 and closes the bore 41 in a pressure-tight manner.
  • the cap On its inside facing the bearing pin 44, the cap is designed as a contact surface 6o for the front end 21 of the rotary valve 2.
  • This contact surface prevents the rotary valve 2 from moving towards the cap 42 in the longitudinal direction during filling. Such movement must be prevented so that a play is maintained between the outer surface 6 of the rotary valve and the inner surface 7 of the interior 5, which prevents contact between the two conical surfaces 6, 7. This contact would lead to the outer surface 6 becoming jammed on the inner surface 7.
  • the inner space 5 has an outlet bore 16, the bore 38 o with respect opposite to a rotation angle of about 18o of the housing. 1
  • This outlet bore 46 is aligned with the opening 39 of the rotary valve 2 and thus with the bore 38. It opens into a mouthpiece 47 which is arranged directly above a packaging unit to be filled, for example a cup 48.
  • This cup 48 is transported with the aid of a conveyor device 49, for example a conveyor belt, in the direction of the mouthpiece 47 or is conveyed away therefrom.
  • the bore 38 and the outlet bore 46 can be formed as openings formed in the housing 1, which can be formed in any manner.
  • the product to be filled for example a pasty mass, is conveyed from a storage container (not shown) through the inlet 37 in the direction of the bore 38 and the opening 39, which is aligned with the bore 38 during the filling of the cylinder part 23.
  • a storage container not shown
  • the product is sucked in that the piston head 3 is moved in the direction of the cleaning chamber 22 and a negative pressure is generated in the cylinder part 23.
  • the movement of the piston head 3 comes to an end before it reaches the cleaning chamber 22.
  • the piston rod 9 is now rotated about its longitudinal axis. This rotation is followed by the via opening 13 coupled to them rotary valve 2
  • the rotary valve 2 is rotated by an angle of 18o o.
  • the opening 39 comes into the region of the outlet bore 46.
  • the piston head 3 is moved in the direction of the front end 21 and the product contained in the cylinder part 23 through the outlet bore 46 in the direction of the Cup 48 ejected.
  • the rotary valve 2 is rotated about its central axis until the opening 39 is recently aligned with the bore 38. In this position, the product can enter the opening 39.
  • the piston head 3 is moved in the direction of the cleaning chamber 22 so that in a part of the cylinder part 23 which is adjacent to the front end 21, a vacuum is now created which sucks the product into the cylinder part 23.
  • the rotary valve 2 is pulled out of the fit 4 with the aid of the coupling 19 in the direction of its rear end 12.
  • a relatively small displacement of the rotary slide valve 2 from a plane A shown in FIG. 2 in the direction of a plane B also drawn there is sufficient. This displacement is sufficient in view of the conical design of both the inner surface 7 and the outer surface 6
  • a cleaning liquid entering through the cleaning connections 28 and 33 can push through between the outer surface 6 on the one hand and the inner surface 7 on the other hand.
  • the cleaning fluid passes through the cleaning connection 33 into the region of the front end 21 of the rotary slide valve 2, so that it too is cleaned to the desired extent.
  • the cleaning liquid enters through the cleaning connection 33 both via the collar 44 into the cavity 8 and via the outer surface 6 into the opening 39. Finally, cleaning fluid passes through the cleaning port 36 into the inlet 37 and thus into the cavity 8. At the same time, the piston head 3 is pulled back into the cleaning chamber 22, so that it is washed around on all sides by the cleaning liquid entering through the access opening 27.
  • the cross section of the cleaning chamber 22 is selected so that the piston head 3 and the piston sleeve 24 surrounding it do not abut their inner walls when it is drawn into them.
  • the piston head 3 is washed on all sides by cleaning agent, which leaves the cleaning chamber 22 via an outlet opening 51, which is provided in the rotary valve 2 and is aligned with a drain opening 51, which is provided in the housing 1 and from which the cleaning liquid in the direction of one emerges collection container, not shown.
  • the cleaning process is ended.
  • the supply of cleaning liquid to the cleaning connections 28, 33, 36 is interrupted and the rotary valve 2 is moved from the plane B to the plane A in the axial direction onto the front end 21 by means of the coupling 19. In this position, the filling of the cups 48, which are transported up on the conveyor device 49, can now be resumed.
  • the piston rod 9 can also have a different cross section, which is able to bring about a fixed coupling in the direction of rotation between the piston rod 9 and the rotary valve 2.
  • the rotary slide valve 2 is mounted on a bearing bush 52 and the pin 44 both for the purpose of executing rotary movements and of axial movements. Instead of the pin 44, however, a further bearing bush 59 can also be used.
  • the rotary valve 2 is configured at its front end as a bearing journal which is mounted in the bearing bush 59 which is fitted into the housing 1.
  • the plain bearing consisting of the bearing bush 59 and the front part of the rotary valve 2 designed as a bearing journal is spatially separated from the cavity 8. Bearing lubrication by the filling material therefore does not take place in this embodiment.
  • the bearing bush 59 must therefore, like the bearing bush 52, have dry sliding properties.
  • the device can also be used for filling liquid masses if the mouthpiece 47 is removed and the outlet bore 46 is formed as a cutting edge.
  • a cutting plug designed in this way liquid masses can also be filled into the cup 48 provided, even if these are permeated with solid constituents, for example pieces of fruit.
  • the rotary valve 2 it is possible to fill the rotary valve 2 not only with the help of the negative pressure which is generated by the suction movement of the piston head 3 surrounding the piston sleeve 24. Rather, it is possible to also fill the rotary valve 2 with a pressure 53 which is applied to a product 54 to be filled outside the rotary valve 2.
  • This pressure 53 can be generated with the aid of a pressure piston 55, which moves within a cylinder 56, in which the product 54 to be filled is compressed by the pressure piston 55.
  • the cylinder 56 communicates with the inlet 37, via which the product 54 to be filled is pressed into the rotary valve.
  • the product 54 to be filled is introduced via a filling valve 57, which is connected to the cylinder 56 via a line 58 .

Abstract

A machine for transferring metered quantities of viscous materials from a source of such materials into successive receptacles has a tubular housing with inlets and outlets disposed diametrically opposite each other. The housing confines a rotary metering device having an axially extending chamber and an opening which communicates with the inlet in one angular position and with the outlet in another angular position of the metering device. A piston in the metering device draws flowable material from the source into the chamber in the first angular position and expels such material from the chamber into a receptacle in the second angular position of the metering device. The housing and the metering device have adjacent frustoconical surfaces and the metering device is movable axially to establish between such surfaces a frustoconical clearance for admission of a liquid or gaseous cleaning fluid while the metering device remains in the interior of the housing. Additional cleaning fluid can be admitted into the metering device in the region of its opening as well as into the inlet of the housing.

Description

DIE ERFINDUNG BETRIFFT EIN VERFAHREN ZUM ABMESSEN eines abfüllbaren Produktes mit einem in einem Gehäuse drehbar gelagerten Meßbehälter, mit dem das abfüllbare Produkt abgemessen und nach einer Drehung des Meßbehälters in eine Verpackungseinheit abgegeben wird, bei dem zum Zwecke der Reinigung ein zwischen dem Gehäuse und dem Meßbehälter vorgesehener Spalt von einer Reinigungsflüssigkeit durchspült wird.The invention relates to a method for measuring a fillable product with a measuring container rotatably mounted in a housing, with which the fillable product is measured and after a rotation of the measuring container is dispensed into a packaging unit, in which, for the purpose of cleaning, a between the housing and the measuring container provided gap is flushed through by a cleaning liquid.

Bei einem bekannten Verfahren (DE-A1-3010010) wird eine Füllvorrichtung benutzt, bei der zwischen Gehäuse und Drehschieber eine Trennfuge vorgesehen ist. Im Bereich dieser Trennfuge liegt die Außenwandung des Drehschiebers der Innenwand des Gehäuses gegenüber. Der Drehschieber sowohl als auch die im Gehäuse vorgesehene Innenbohrung, in der der Drehschieber gelagert ist, sind zylindrisch ausgebildet. Die Trennfuge hat mithin eine Spaltbreite, die der üblichen Spaltbreite einer Gleitlagerung entspricht.In a known method (DE-A1-3010010) a filling device is used in which a separating joint is provided between the housing and the rotary valve. In the area of this parting line, the outer wall of the rotary slide valve is opposite the inner wall of the housing. The rotary valve as well as the inner bore provided in the housing, in which the rotary valve is mounted, are cylindrical. The parting line therefore has a gap width that corresponds to the usual gap width of a plain bearing.

Im Hinblick auf diese geringe Spaltbreite der Trennfuge muß ein erheblicher Druck aufgewendet werden, um überhaupt Reinigungsflüssigkeit in die Trennfuge hineinpressen zu können. Aber selbst bei Anwendung eines sehr hohen Druckes kann nicht damit gerechnet werden, daß eine ordnungsgemäße Durchspülung der Trennfuge stattfindet. Vielmehr werden je nach der augenblicklichen Lagerung des Drehschiebers innerhalb des Gehäuses mehr oder minder große Teile der Trennfuge von der Reinigungsflüssigkeit erreicht, ohne daß gewährleistet ist, daß die in die Trennfuge hineingepreßte Reinigungsflüssigkeit nach Beendigung der Reinigung auch aus der Trennfuge wieder herausgepreßt wird.In view of this small gap width of the parting line, considerable pressure must be applied in order to be able to press cleaning liquid into the parting line at all. But even when using a very high pressure, it cannot be expected that the separation joint will be properly flushed. Rather, depending on the instantaneous storage of the rotary valve within the housing, more or less large parts of the parting line are reached by the cleaning liquid without ensuring that the cleaning liquid pressed into the parting line is also squeezed out of the parting line after cleaning has ended.

Demgegenüber muß angesichts des ständigen Kontaktes der Trennfuge mit dem abzufüllenden Produkt damit gerechnet werden, daß flüssige Bestandteile dieses Produktes in die Trennfuge aufgrund der ständigen Bewegungen, die der Drehschieber gegenüber dem Gehäuse ausführt, hineingesaugt wird. Wie weit diese Flüssigkeit in die Trennfuge hineingesaugt wird, ist dabei ausschließlich dem Zufall überlassen und hängt davon ab, wie genau der Drehschieber in das Gehäuse eingepaßt ist, welche Art von Bewegungen der Drehschieber ausführt, ob er beispielsweise schnell oder langsam gedreht und umgesteuertwird, und nicht zuletzt wie hoch der Druck ist, unter dem das abzufüllende Produkt während des Abfüllens steht.In contrast, in view of the constant contact of the parting line with the product to be filled, liquid components of this product must be sucked into the parting line due to the constant movements that the rotary valve makes relative to the housing. How far this liquid into the Parting line is sucked in, is left entirely to chance and depends on how exactly the rotary valve is fitted into the housing, what type of movements the rotary valve performs, whether it is rotated and reversed quickly or slowly, and last but not least, how high the pressure under which the product to be filled is placed during filling.

An eine moderne, hygienischen Anforderungen entsprechende Reinigung der sich im Bereich der Trennfuge gegenüber liegenden Flächen ist unter diesen Umständen nicht zu denken. Vielmehr muß damit gerechnet werden, daß sich im Spalt der Trennfuge ein nicht zu duldendes Gemisch von Speiseresten und Reinigungsflüssigkeit einstellt, das im übrigen auch im Hinblick auf die Bewegungen des Drehschiebers mechanisch beansprucht und damit zersetzt wird.Under these circumstances, it is not possible to think about modern, hygienic cleaning of the surfaces opposite each other in the area of the parting line. Rather, it must be expected that a mixture of food residues and cleaning liquid which cannot be tolerated will occur in the gap of the parting line, which is also mechanically stressed and thus decomposed with regard to the movements of the rotary valve.

Aufgabe der vorliegenden Erfindung ist es daher, das Verfahren der einleitend genannten Art so zu verbessern, daß der Drehschieber leicht und gründlich gereinigt werden kann, und die Abfüllung des Produktes dazu nur kurzfristig unterbrochen werden muß.The object of the present invention is therefore to improve the method of the type mentioned in the introduction so that the rotary valve can be cleaned easily and thoroughly, and the filling of the product only has to be interrupted for a short time.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Meßbehälter in seiner Längsrichtung innerhalb des Gehäuses von einer Befüllungs- und Ausgangsposition, in der das Produkt abgemessen wird, in eine Reinigungsposition verschoben wird, in der die Reinigung vorgenommen wird, und durch diese Verschiebung der Spalt zur intensiven Durchspülung mit der Reinigungsflüssigkeit verbreitert wird.This object is achieved in that the measuring container is moved in its longitudinal direction within the housing from a filling and starting position in which the product is measured to a cleaning position in which the cleaning is carried out, and by this displacement the gap to intensive rinsing with the cleaning liquid is widened.

Durch diese Verbreiterung des Spaltes werden die den Spalt beidseitig begrenzenden Flächen des Drehschiebers einerseits und der Gehäusebohrung andererseits von der Reinigungsflüssigkeit erreicht und gründlich umspült. Vorhandene Speisereste werden weggespült. Nach Beendigung der Reinigung wird eine sorgfältige Nachspülung des Spaltes vorgenommen, so daß die gesamte Reinigungsflüssigkeit aus dem Spalt entfernt wird. Unmittelbar nach Beendigung der Spülung wird der Drehschieber wieder in seine Befüllungs- und Ausgangsposition zurück geführt, so daß ohne wesentliche zeitliche Einbußen das Abfüllen des Produktes fortgesetzt werden kann.As a result of this widening of the gap, the surfaces of the rotary valve, which delimit the gap on both sides, and the housing bore, on the other hand, are reached by the cleaning liquid and thoroughly washed around. Existing food residues are washed away. After cleaning is complete, the gap is carefully rinsed so that all of the cleaning liquid is removed from the gap. Immediately after completion of the Flushing, the rotary valve is returned to its filling and starting position, so that the filling of the product can be continued without significant loss of time.

Weitere Einzelheiten der Erfindung ergeben sich aus der nachfolgenden ausführlichen Beschreibung und den beigefügten Zeichnungen, denen eine bevorzugte Ausführungsform der Erfindung beispielsweise veranschaulicht ist.Further details of the invention will become apparent from the following detailed description and the accompanying drawings, which illustrate a preferred embodiment of the invention, for example.

In den Zeichnungen zeigen:

Fig. 1 :
einen Längsschnitt durch eine Vorrichtung,
Fig. 2 :
einen anderen Längsschnitt durch eine Vorrichtung,
Fig. 3 :
eine Draufsicht auf die Vorrichtung in Blickrichtung X,
Fig. 4 :
eine Funktionsskizze einer Vorrichtung in ihrer Ansicht von vorne,
Fig. 5 :
einen weiteren Längsschnitt durch eins Vorrichtung und
Fig. 6 :
einen weiteren anderen Längsschnitt durch eine Vorrichtung.
The drawings show:
Fig. 1:
a longitudinal section through a device,
Fig. 2:
another longitudinal section through a device,
Fig. 3:
a plan view of the device in viewing direction X,
Fig. 4:
a functional sketch of a device in its view from the front,
Fig. 5:
another longitudinal section through a device and
Fig. 6:
another different longitudinal section through a device.

Eine für die Durchführung des erfindungsgemäßen Verfahrens geeignete Vorrichtung besteht im wesentlichen aus einem Gehäuse 1, einem Drehschieber 2 und einem Kolbenkopf 3. Der Drehschieber 2 ist in einem Innenraum 5 geführt, der innerhalb des Gehäuses 1 ausgebildet ist. In diesem Innenraum 5 ist der Drehschieber 2 sowohl um seine Längsachse als auch in axialer Richtung verschieblich gelagert. Der Drehschieber 2 besitzt eine dem Gehäuse 1 zugewandte Außenfläche 6, die eine ihr gegenüberliegende Innenfläche 7 des Gehäuse gleitend beaufschlagt, die den Innenraum 5 begrenzt.A device suitable for carrying out the method according to the invention essentially consists of a housing 1, a rotary valve 2 and a piston head 3. The rotary valve 2 is guided in an interior space 5 which is formed within the housing 1. In this interior 5, the rotary valve 2 is mounted displaceably both about its longitudinal axis and in the axial direction. The rotary slide valve 2 has an outer surface 6 facing the housing 1, which slidably acts on an inner surface 7 of the housing opposite it, which delimits the interior 5.

Der Drehschieber 2 ist als ein Meßbehälter ausgebildet, in dessen Innenraum ein Hohlraum 8 vorgesehen ist. Dieser Hohlraum 8 erstreckt sich in axialer Richtung des Drehschiebers 2 und ist zylindrisch ausgebildet. Der Hohlraum 8 kann neben dem zylindrisch ausgebildeten Teil 23 aus einem rohrförmigen, strömungsgünstig abgewinkelten Anschlußteil 61 bestehen, der den Zylinderteil 23 mit einer Öffnung 39 verbindet. Durch die strömungsgünstige Ausbildung eignet sich der Anschlußteil 61 besonders gut, um zähflüssige Füllmittel in den Zylinderteil 23 zu füllen und abzumessen. Die Verbindung zwischen der Öffnung 39 und dem Zylinderteil 23 kann jedoch auch durch eine einfache Bohrung hergestellt sein, die sich von der Außenfläche 6 in den Zylinderteil 23 erstreckt.The rotary valve 2 is designed as a measuring container, in the interior of which a cavity 8 is provided. This cavity 8 extends in the axial direction of the rotary valve 2 and is cylindrical. In addition to the cylindrical part 23, the cavity 8 can consist of a tubular, aerodynamically angled connecting part 61 which connects the cylinder part 23 to an opening 39. Due to the streamlined design, the connecting part 61 is particularly well suited to fill and measure viscous fillers in the cylinder part 23. The connection between the opening 39 and the cylinder part 23 can, however, also be established by a simple bore which extends from the outer surface 6 into the cylinder part 23.

In dem Hohlraum 8 gleitet in axialer Richtung der Kolbenkopf 3, an dem eine Kolbenstange 9 befestigt ist, die mit ihrem dem Kolbenkopf 3 gegenüberliegenden Ende 1o aus dem Drehschieber 2 herausragt. Dieser ist an seinem dem Ende 1o der Kolbenstange 9 benachbarten Ende 12 von einer Wandung 11 abgeschlossen, die von einer Öffnung 13 durchdrungen ist. In dieser Öffnung 13 wird die Kolbenstange 9 geführt. Diese hat einen quadratischen Querschnitt 14, so daß auch die Öffnung 13 einen entsprechenden quadratischen Querschnitt 14 aufweist. Darüber hinaus ist am Ende 1o der Kolbenstange 9 eine Ankopplungsvorrichtung 15 vorgesehen, an der ein die Kolbenstange 9 bewegender, nicht dargestellter Antrieb angekoppelt werden kann. Diese Ankopplungsvorrichtung 15 ist als eine Bohrung ausgebildet, die quer zur Längsrichtung der Kolbenstange 9 diese durchdringt.In the cavity 8, the piston head 3 slides in the axial direction, to which a piston rod 9 is attached, which protrudes from the rotary valve 2 with its end 10 opposite the piston head 3. This is closed at its end 12 adjacent to the end 10 of the piston rod 9 by a wall 11 which is penetrated by an opening 13. The piston rod 9 is guided in this opening 13. This has a square cross section 14, so that the opening 13 also has a corresponding square cross section 14. In addition, a coupling device 15 is provided at the end 10 of the piston rod 9, to which a drive (not shown) which moves the piston rod 9 can be coupled. This coupling device 15 is designed as a bore which penetrates the piston rod 9 transversely to the longitudinal direction thereof.

Am Ende 12 des Drehschiebers 2 ist in die Wandung 11 eine ringförmige Nut 16 eingelassen, deren einander sich gegenüberliegenden sich in radialer Richtung erstreckenden Wandungen als Gleitflächen 17, 18 ausgebildet sind. Auf diesen Gleitflächen 17, 18 gleitet eine Kupplung 19, die mit einem nicht dargestellten Antrieb verbunden ist, der in der Lage ist, den Drehschieber 2 in axialer Richtung zu verschieben.At the end 12 of the rotary valve 2, an annular groove 16 is embedded in the wall 11, the mutually opposite walls of which extend in the radial direction are designed as sliding surfaces 17, 18. A coupling 19 slides on these sliding surfaces 17, 18 and is connected to a drive, not shown, which is capable of displacing the rotary valve 2 in the axial direction.

Der Drehschieber 2 ragt mit seinem Ende 12 aus einem hinteren Teil 2o des Gehäuses 1 heraus. Auf diesem aus dem Gehäuse 1 herausragenden Ende 12 ist die Nut 16 vorgesehen. Von diesem Ende 12 verläuft die Außenfläche 6 in Richtung auf sein gegenüberliegendes vorderes Ende 21 konisch inder Weise, daß sich die Querschnitte vom hinteren Ende 12 in Richtung auf das vordere Ende 21 verjüngen. In entsprechender Weise ist auch die Innenfläche 7 des Innenraumes 5 konisch ausgebildet, so daß sie im Bereich ihres hinteren Teils 2o ihren größten Querschnitt besitzt.The end of the rotary valve 2 protrudes 12 from a rear part 20 of the housing 1. The groove 16 is provided on this end 12 protruding from the housing 1. From this end 12, the outer surface 6 tapers towards its opposite front end 21 in such a way that the cross sections from the rear end 12 taper towards the front end 21. Correspondingly, the inner surface 7 of the interior 5 is also conical, so that it has its largest cross-section in the region of its rear part 20.

Der Hohlraum 8 ist an seinen der Wandung 11 benachbarten Ende als eine Reinigungskammer 22 ausgebildet. Diese besitzt einen größeren Querschnitt als der dem vorderen Teil 21 zugewandter Zylinderteil 23. In dem Zylinderteil gleitet der Kolbenkopf 3, der an seinem der Kolbenstange 9 benachbarten Ende eine Kolbenmanschette 24 trägt. Diese Kolbenmanschette 24 sorgt mit ihrer Außenfläche 25 für einen druckdichten Abschluß des Kolbenkopfes 3 innerhalb des Zylinderteils 23, dessen Querschnitt so bemessen ist, daß die in ihm gleitende Kolbenmanschette mit einer so engen Passung geführt wird, daß sie inder Lage ist, je nach Bewegungsrichtung innerhalb des Zylinderteils 23 einen Unter- beziehungsweise Überdruck zu erzeugen.The cavity 8 is formed at its end adjacent to the wall 11 as a cleaning chamber 22. This has a larger cross section than the cylinder part 23 facing the front part 21. The piston head 3 slides in the cylinder part and carries a piston sleeve 24 at its end adjacent to the piston rod 9. This piston sleeve 24 provides with its outer surface 25 for a pressure-tight seal of the piston head 3 within the cylinder part 23, the cross section of which is dimensioned such that the piston sleeve sliding in it is guided with such a close fit that it is capable of generating a negative or positive pressure within the cylinder part 23 depending on the direction of movement.

Zwischen der Reinigungskammer 22 und dem Zylinderteil 23 ist eine Übergangszone 26 vorgesehen, in der der Querschnitt des Zylinderteils 23 sich stetig erweitert auf den Querschnitt der Reinigungskammer 22. In der Reinigungskammer 22 sind Zutrittsöffnungen 27 für eine Reinigungsflüssigkeit vorgesehen, die über einen Reinigungsanschluß 28 zugeführt wird.Between the cleaning chamber 22 and the cylinder part 23, a transition zone 26 is provided, in which the cross section of the cylinder part 23 continuously expands to the cross section of the cleaning chamber 22. In the cleaning chamber 22, access openings 27 are provided for a cleaning liquid which is supplied via a cleaning connection 28 .

Dieser Reinigungsanschluß 28 ist über einen Verteiler 29 mit zwei Anschlüssen 3o, 31 verbunden, die durch das Gehäuse 1 hindurch in den Innenraum 5 münden. Dabei ist der Verteiler 29 in axialer Richtung auf einer der Innenfläche 7 gegenüberliegenden Außenfläche 32 des Gehäuses 1 angeordnet. Der dem hinteren Teil 2o zugewandte hintere Anschluß 31 weist eine mit den Zutrittsöffnungen 27 fluchtende Mündung auf. Demgegenüber ist der dem hinteren Anschluß 31 gegenüberliegende vordere Anschluß 3o mit einer Mündung versehen, die etwa in der Mitte des Innenraumes 5 mündet.This cleaning connection 28 is connected via a distributor 29 to two connections 3o, 31 which open through the housing 1 into the interior 5. The distributor 29 is arranged in the axial direction on an outer surface 32 of the housing 1 opposite the inner surface 7. The rear connection 31 facing the rear part 2o has an orifice aligned with the access openings 27. In contrast, the front connection 3o opposite the rear connection 31 is provided with an opening which opens approximately in the middle of the interior 5.

Ein weiterer Reinigungsanschluß 33 ist vorgesehen an einem dem vorderen Ende 21 benachbarten vorderen Ende 34 des Gehäuses 1. Dieser Reinigungsanschluß 33 fluchtet mit einer Zutrittsöffnung 35, die im Bereich des vorderen Endes 21 in den Innenraum 5 mündet. Darüber hinaus ist ein weiterer Reinigungsanschluß 36 im Bereich eines Einlaufs 37 vorgesehen, durch den ein abzufüllendes Produkt über eine Bohrung 38 in das Gehäuse 1 und von diesem über eine Öffnung 39 in den Zylinderteil 23 des Hohlraumes 8 eintritt. Der Einlauf 37 kann als eine Rohrleitung ausgebildet sein, die mit einem entsprechend ausgebildeten Flansch 4o fest verbunden ist, der die Bohrung 38 umgibt und mit dem Gehäuse 1 fest verbunden ist.A further cleaning connection 33 is provided on a front end 34 of the housing 1 which is adjacent to the front end 21. This cleaning connection 33 is aligned with an access opening 35 which opens into the interior 5 in the region of the front end 21. In addition, a further cleaning connection 36 is provided in the region of an inlet 37, through which a product to be filled enters the housing 1 via a bore 38 and from there via an opening 39 into the cylinder part 23 of the cavity 8. The inlet 37 can be designed as a pipeline, which is firmly connected to a correspondingly designed flange 40, which surrounds the bore 38 and is firmly connected to the housing 1.

Das Gehäuse 1 ist an seinem vorderen Ende 34 mit einer Bohrung 41 versehen, deren Querschnitt kleiner oder gleich der des ihm benachbarten Innenraumes 5 ist. Diese Bohrung 41 ist von einer Kappe 42 verschlossen, die mit einem Bund 43 in der Bohrung 41 geführt wird. An diesen Bund 43 schließt sich in Richtung auf den Innenraum 5 ein Lagerzapfen 44 an, dessen Querschnitt dem Querschnitt des Zylinderteils 23 entspricht, in den der Lagerzapfen 44 passend hineinragt. Auf diesem Lagerzapfen 44 wird der Drehschieber 2 im Bereich seines vorderen Endes 21 geführt. Diese Kappe 42 wird auf ihrer dem Lagerzapfen 44 abgewandten Außenseite von einer Deckfläche 45 begrenzt, die über den Bund 43 hinausragt und die Bohrung 41 druckdicht verschließt. Auf ihrer dem Lagerzapfen 44 zugewandten Innenseite ist die Kappe als eine Anlauffläche 6o für das vordere Ende 21 des Drehschiebers 2 ausgebildet. Diese Anlauffläche verhindert, daß der Drehschieber 2 sich während des Abfüllens in Längsrichtung auf die Kappe 42 hinbewegt. Eine derartige Bewegung muß verhindert werden, damit zwischen der Außenfläche 6 des Drehschiebers und der Innenfläche 7 des Innenraumes 5 ein Spiel erhalten bleibt, das die Berührung der beiden konischen Flächen 6, 7 verhindert. Diese Berührung würde dazu führen, daß sich die Außenfläche 6 auf der Innenfläche 7 verklemmt.The housing 1 is provided at its front end 34 with a bore 41, the cross section of which is smaller than or equal to that of the interior 5 adjacent to it. This bore 41 is closed by a cap 42 which is guided in the bore 41 with a collar 43. This collar 43 is adjoined in the direction of the interior 5 by a bearing pin 44, the cross section of which corresponds to the cross section of the cylinder part 23 into which the bearing pin 44 protrudes. The rotary valve 2 is guided in the region of its front end 21 on this journal 44. This cap 42 is delimited on its outer side facing away from the journal 44 by a cover surface 45 which projects beyond the collar 43 and closes the bore 41 in a pressure-tight manner. On its inside facing the bearing pin 44, the cap is designed as a contact surface 6o for the front end 21 of the rotary valve 2. This contact surface prevents the rotary valve 2 from moving towards the cap 42 in the longitudinal direction during filling. Such movement must be prevented so that a play is maintained between the outer surface 6 of the rotary valve and the inner surface 7 of the interior 5, which prevents contact between the two conical surfaces 6, 7. This contact would lead to the outer surface 6 becoming jammed on the inner surface 7.

Der Innenraum 5 besitzt eine Auslaßbohrung 16, die der Bohrung 38 um einen Drehwinkel von etwa 18oo bezüglich des Gehäuses 1 gegenüberliegt. Diese Auslaßbohrung 46 fluchtet mit der Öffnung 39 des Drehschiebers 2 und damit mit der Bohrung 38. Sie mündet in ein Mundstück 47, das unmittelbar oberhalb einer abzufüllenden Verpackungseinheit, beispielsweise eines Bechers 48 angeordnet ist. Dieser Becher 48 wird mit Hilfe einer Fördereinrichtung 49, beispielsweise eines Förderbandes in Richtung auf das Mundstück 47 transportiert bzw. von diesem weggefördert. Die Bohrung 38 und die Auslaßbohrung 46 können als im Gehäuse 1 ausgebildete Öffnungen ausgebildet sein, die in jeder beliebigen Weise ausgebildet sein können.The inner space 5 has an outlet bore 16, the bore 38 o with respect opposite to a rotation angle of about 18o of the housing. 1 This outlet bore 46 is aligned with the opening 39 of the rotary valve 2 and thus with the bore 38. It opens into a mouthpiece 47 which is arranged directly above a packaging unit to be filled, for example a cup 48. This cup 48 is transported with the aid of a conveyor device 49, for example a conveyor belt, in the direction of the mouthpiece 47 or is conveyed away therefrom. The bore 38 and the outlet bore 46 can be formed as openings formed in the housing 1, which can be formed in any manner.

Aus einem nicht dargestellten Vorratsbehälter wird das abzufüllende Produkt, beispielsweise eine pastöse Masse, durch den Einlauf 37 in Richtung auf die Bohrung 38 und die Öffnung 39 gefördert, die während der Befüllung des Zylinderteils 23 mit der Bohrung 38 fluchtet. Zur Beschleunigung der Befüllung wird das Produkt dadurch angesaugt, daß der Kolbenkopf 3 in Richtung auf die Reinigungskammer 22 bewegt wird und im Zylinderteil 23 ein Unterdruck erzeugt wird. Die Bewegung des Kolbenkopfes 3 kommt vor Erreichen der Reinigungskammer 22 zum Ende.The product to be filled, for example a pasty mass, is conveyed from a storage container (not shown) through the inlet 37 in the direction of the bore 38 and the opening 39, which is aligned with the bore 38 during the filling of the cylinder part 23. To accelerate the filling, the product is sucked in that the piston head 3 is moved in the direction of the cleaning chamber 22 and a negative pressure is generated in the cylinder part 23. The movement of the piston head 3 comes to an end before it reaches the cleaning chamber 22.

Nunmehr wird die Kolbenstange 9 um ihre Längsachse gedreht. Dieser Drehung folgt der über die Öffnung 13 an sie angekoppelte Drehschieber 2. Der Drehschieber 2 wird um einen Winkel von 18oo gedreht. Dabei gelangt die Öffnung 39 in den Bereich der Auslaßbohrung 46. Sobald die Öffnung 39 mit der Auslaßbohrung 46 fluchtet, wird der Kolbenkopf 3 in Richtung auf das vordere Ende 21 bewegt und dabei das im Zylinderteil 23 enthaltene Produkt durch die Auslaßbohrung 46 in Richtung auf den Becher 48 ausgestoßen.The piston rod 9 is now rotated about its longitudinal axis. This rotation is followed by the via opening 13 coupled to them rotary valve 2 The rotary valve 2 is rotated by an angle of 18o o. The opening 39 comes into the region of the outlet bore 46. As soon as the opening 39 is aligned with the outlet bore 46, the piston head 3 is moved in the direction of the front end 21 and the product contained in the cylinder part 23 through the outlet bore 46 in the direction of the Cup 48 ejected.

Sobald der Kolbenkopf 3 seine vordere Position im Bereich des vorderen Endes 21 erreicht hat, wird der Drehschieber 2 um seine Mittelachse gedreht, bis neuerdings die Öffnung 39 mit der Bohrung 38 fluchtet. In dieser Stellung kann das Produkt in die Öffnung 39 eintreten. Zur Vergrößerung der Ein-. trittsgeschwindigkeit wird der Kolbenkopf 3 in Richtung auf die Reinigungskammer 22 bewegt, so daß in einem dem vorderen Ende 21 benachbarten Teil des Zylinderteils 23 neuerdings ein Unterdruck entsteht, der das Produkt in den Zylinderteil 23 ansaugt.As soon as the piston head 3 has reached its front position in the region of the front end 21, the rotary valve 2 is rotated about its central axis until the opening 39 is recently aligned with the bore 38. In this position, the product can enter the opening 39. To enlarge the input. the piston head 3 is moved in the direction of the cleaning chamber 22 so that in a part of the cylinder part 23 which is adjacent to the front end 21, a vacuum is now created which sucks the product into the cylinder part 23.

Zum Zwecke der Reinigung der Vorrichtung wird der Drehschieber 2 mit Hilfe der Kupplung 19 in Richtung auf sein hinteres Ende 12 aus dem Paßsitz 4 herausgezogen. Dabei genügt eine relativ kleine Versetzung des Drehschiebers 2 von einer in der Figur 2 dargestellten Ebene A in Richtung auf eine dort ebenfalls eingezeichnete Ebene B. Diese Versetzung reicht aus, um im Hinblick auf die konische Ausbildung sowohl der Innenfläche 7 als auch der Außenfläche 6 den Sitz des Drehschiebers 2 innerhalb des Innenraumes 5 so weitgehend zu lockern, daß eine durch die Reinigungsanschlüsse 28 und 33 eintretende Reinigungsflüssigkeit sich zwischen die Außenfläche 6 einerseits und die Innenfläche 7 andererseits durchdrücken kann. Darüber hinaus tritt durch den Reinigungsanschluß 33 die Reinigungsflüssigkeit in den Bereich des vorderen Endes 21 des Drehschiebers 2, so daß auch diese in dem gewünschten Umfange gereinigt wird. Dabei tritt die Reinigungsflüssigkeit durch den Reinigungsanschluß 33 sowohl über den Bund 44 in den Hohlraum 8 als auch über die Außenfläche 6 in die Öffnung 39 ein. Schließlich gelangt Reinigungsflüssigkeit durch den Reinigungsananschluß 36 in den Einlauf 37 und damit in den Hohlraum 8. Gleichzeitig wird der Kolbenkopf 3 bis in die Reinigungskammer 22 zurückgezogen, so daß er dort allseits von der durch die Zutrittsöffnung 27 zutretenden Reinigungsflüssigkeit umspült wird. Dabei ist der Querschnitt der Reinigungskammer 22 so gewählt, daß der Kolbenkopf 3 sowie die ihn umgebende Kolbenmanschette 24 an ihren Innenwandungen nicht anliegt, wenn er in sie hineingezogen ist. Auf diese Weise wird der Kolbenkopf 3 allseitig von Reinigungsmittel umspült, das die Reinigungskammer 22 über eine Auslaßöffnung 51 verläßt, die im Drehschieber 2 vorgesehen ist und mit einer Ablaßöffnung 51 fluchtet, die im Gehäuse 1 vorgesehen ist und aus der die Reinigungsflüssigkeit in Richtung auf einen nicht dargestellten Auffangbehälter austritt.For the purpose of cleaning the device, the rotary valve 2 is pulled out of the fit 4 with the aid of the coupling 19 in the direction of its rear end 12. A relatively small displacement of the rotary slide valve 2 from a plane A shown in FIG. 2 in the direction of a plane B also drawn there is sufficient. This displacement is sufficient in view of the conical design of both the inner surface 7 and the outer surface 6 To loosen the seat of the rotary valve 2 within the interior 5 to such an extent that a cleaning liquid entering through the cleaning connections 28 and 33 can push through between the outer surface 6 on the one hand and the inner surface 7 on the other hand. In addition, the cleaning fluid passes through the cleaning connection 33 into the region of the front end 21 of the rotary slide valve 2, so that it too is cleaned to the desired extent. The cleaning liquid enters through the cleaning connection 33 both via the collar 44 into the cavity 8 and via the outer surface 6 into the opening 39. Finally, cleaning fluid passes through the cleaning port 36 into the inlet 37 and thus into the cavity 8. At the same time, the piston head 3 is pulled back into the cleaning chamber 22, so that it is washed around on all sides by the cleaning liquid entering through the access opening 27. The cross section of the cleaning chamber 22 is selected so that the piston head 3 and the piston sleeve 24 surrounding it do not abut their inner walls when it is drawn into them. In this way, the piston head 3 is washed on all sides by cleaning agent, which leaves the cleaning chamber 22 via an outlet opening 51, which is provided in the rotary valve 2 and is aligned with a drain opening 51, which is provided in the housing 1 and from which the cleaning liquid in the direction of one emerges collection container, not shown.

Nachdem alle mit dem Produkt in Kontakt gewesenen Teile mit Reinigungsflüssigkeit ausgiebig umspült worden sind, wird der Reinigungsvorgang beendet. Zu diesem Zwecke wird der Zulauf von Reinigungsflüssigkeit zu den Reinigungsanschlüssen 28, 33, 36 unterbrochen und der Drehschieber 2 mit Hilfe der Kupplung 19 in axialer Richtung auf das vordere Ende 21 von der Ebene B in die Ebene A bewegt. In dieser Lage kann neuerdings die Befüllung der Becher 48 wieder aufgenommen werden, die auf der Fördereinrichtung 49 herantransportiert werden.After all parts in contact with the product have been thoroughly rinsed with cleaning liquid, the cleaning process is ended. For this purpose, the supply of cleaning liquid to the cleaning connections 28, 33, 36 is interrupted and the rotary valve 2 is moved from the plane B to the plane A in the axial direction onto the front end 21 by means of the coupling 19. In this position, the filling of the cups 48, which are transported up on the conveyor device 49, can now be resumed.

Statt eines rechteckigen Querschnittes kann die Kolbenstange 9 auch einen anderen Querschnitt aufweisen, der in der Lage ist eine feste Ankopplung in Drehrichtung zwischen der Kolbenstange 9 und dem Drehschieber 2 herbeizuführen. Darüber hinaus ist es denkbar, sowohl die Außenfläche 6 als auch die Innenfläche 7 auf andere Weise so zu gestalten, daß durch eine Bewegung des Drehschiebers 2 dieser aus dem Gehäuse 1 so weit gelöst wird, daß der Drehschieber 2 allseits von Reinigungsflüssigkeit umspült werden kann. Die Lagerung des Drehschiebers 2 erfolgt sowohl zum Zwecke der Ausführung von Drehbewegungen als auch von axialen Bewegungen auf einer Lagerbuchse 52 und dem Zapfen 44. Anstelle des Zapfens 44 kann jedoch auch eine weitere Lagerbuchse 59 Verwendung finden. In diesem Fall ist der Drehschieber 2 an seinem vorderen Ende als Lagerzapfen ausgestaltet, der in der Lagerbuchse 59 gelagert ist, die in das Gehäuse 1 eingepaßt ist. Dabei ist das von der Lagerbuchse 59 und dem als Lagerzapfen ausgebildeten vorderen Teil des Drehschiebers 2 bestehende Gleitlager räumlich von dem Hohlraum 8 getrennt. Eine Lagerschmierung durch das Füllgut findet daher bei dieser Ausgestaltung nicht statt. Die Lagerbuchse 59 muß daher genau wie die Lagerbuchse 52 Trockengleiteigenschaften aufweisen.Instead of a rectangular cross section, the piston rod 9 can also have a different cross section, which is able to bring about a fixed coupling in the direction of rotation between the piston rod 9 and the rotary valve 2. In addition, it is conceivable to design both the outer surface 6 and the inner surface 7 in a different way so that movement of the rotary valve 2 releases it from the housing 1 to such an extent that the rotary valve 2 can be washed around by cleaning liquid on all sides. The rotary slide valve 2 is mounted on a bearing bush 52 and the pin 44 both for the purpose of executing rotary movements and of axial movements. Instead of the pin 44, however, a further bearing bush 59 can also be used. In this case, the rotary valve 2 is configured at its front end as a bearing journal which is mounted in the bearing bush 59 which is fitted into the housing 1. The plain bearing consisting of the bearing bush 59 and the front part of the rotary valve 2 designed as a bearing journal is spatially separated from the cavity 8. Bearing lubrication by the filling material therefore does not take place in this embodiment. The bearing bush 59 must therefore, like the bearing bush 52, have dry sliding properties.

Die Vorrichtung kann grundsätzlich auch zum Abfüllen von flüssigen Massen Verwendung finden, wenn das Mundstück 47 beseitigt und die Auslaßbohrung 46 als eine Schneidkante ausgebildet wird. Unter Verwendung eines in dieser Weise ausgebildeten Abschneidkükens können in den bereit gestellten Becher 48 auch flüssige Massen abgefüllt werden, selbst wenn diese mit festen Bestandteilen, beispielsweise Fruchtstücken, durchsetzt sind.In principle, the device can also be used for filling liquid masses if the mouthpiece 47 is removed and the outlet bore 46 is formed as a cutting edge. Using a cutting plug designed in this way, liquid masses can also be filled into the cup 48 provided, even if these are permeated with solid constituents, for example pieces of fruit.

Darüber hinaus ist es möglich, den Drehschieber 2 nicht nur mit Hilfe des Unterdrucks zu befüllen, der durch die Saugbewegung des mit der Kolbenmanschette 24 umgebenden Kolbenkopfes 3 erzeugt wird. Vielmehr ist es möglich, die Befüllung des Drehschiebers 2 auch mit einem Druck 53 zu erzeugen, der außerhalb des Drehschiebers 2 auf ein abzufüllendes Produkt 54 aufgebracht wird. Dieser Druck 53 kann mit Hilfe eines Druckkolbens 55 erzeugt werden, der sich innerhalb eines Zylinders 56 bewegt, in dem das abzufüllende Produkt 54 vom Druckkolben 55 komprimiert wird. Der Zylinder 56 steht mit dem Einlauf 37 in Verbindung, über den das abzufüllende Produkt 54 in den Drehschieber hineingedrückt wird.In den Zylinder 56 wird das abzufüllende Produkt 54 über ein Füllventil 57 eingegeben, das über eine Leitung 58 mit dem Zylinder 56 in Verbindung steht.In addition, it is possible to fill the rotary valve 2 not only with the help of the negative pressure which is generated by the suction movement of the piston head 3 surrounding the piston sleeve 24. Rather, it is possible to also fill the rotary valve 2 with a pressure 53 which is applied to a product 54 to be filled outside the rotary valve 2. This pressure 53 can be generated with the aid of a pressure piston 55, which moves within a cylinder 56, in which the product 54 to be filled is compressed by the pressure piston 55. The cylinder 56 communicates with the inlet 37, via which the product 54 to be filled is pressed into the rotary valve. In the cylinder 56, the product 54 to be filled is introduced via a filling valve 57, which is connected to the cylinder 56 via a line 58 .

Claims (39)

  1. A method of metering a fillable product by means of a measuring container which is rotatably mounted in a housing (1) and with which the fillable product is metered and after a rotary movement of the measuring container discharged into a packaging unit, wherein for the purposes of cleaning a gap between the housing (1) and the measuring container is flushed through by a cleaning fluid, characterised in that the measuring container is displaced in its longitudinal direction within the housing (1) from a filling and starting position in which the product is metered into a cleaning position in which the cleaning operation is carried out, and the gap is enlarged by that displacement for intensive flushing through thereof with the cleaning fluid.
  2. A method according to claim 1 characterised in that the product is sucked into the measuring container by a reduced pressure and delivered out of the measuring container by pressure.
  3. A method according to claim 2 characterised in that the pressure and the reduced pressure is produced by a piston head (3) which is guided in a respective direction with a sealing means in the measuring container.
  4. A method according to claims 1 to 3 characterised in that the product is urged into the measuring container by a pressure which is produced outside same.
  5. A method according to claims 1 to 4 characterised in that the measuring container is filled and emptied again after rotary movement thereof through the same opening (39).
  6. A method according to claims 1 to 4 characterised in that the measuring container is filled through an opening (39) and emptied again after rotary movement thereof through another opening.
  7. A method according to claims 1 to 6 characterised in that the product is urged out of the measuring container by a pressure produced outside the measuring container.
  8. A method according to claims 1 to 7 characterised in that the measuring container is continuously rotated.
  9. A method according to claims 1 to 7 characterised in that the measuring container is intermittently rotated.
  10. A method according to claims 3 to 9 characterised in that the piston head (3) is drawn into a cleaning chamber (22) which surrounds it with clearance and is there flushed around with radially introduced cleaning agent.
  11. Apparatus for metering a fillable product which is introduced from a supply container into a measuring container which is mounted rotatably in a housing (1) and which after filling thereof is turned into a starting position in which it is separate from the supply container and in which the product is conveyed out of the measuring container towards a packaging unit, for carrying out the method according to claims 1 to 10, characterised in that the measuring container is mounted displaceably in its longitudinal direction in the housing (1) in a sliding fit and can be pushed into two planes of which in a first plane A the filling and starting position is adopted and in a second plane B a cleaning position is adopted, wherein in the cleaning position the rotary slider (2) is displaced in the axial direction relative to the filling and starting position and in the region of its outside surface (6) has greater clearance relative to an inside surface (7), which is disposed opposite thereto, of an internal space (5) in the housing (1), than in the filling and starting position.
  12. Apparatus according to claim 11 characterised in that the measuring container is in the form of a rotary slider (2) which is guided in the housing (1).
  13. Apparatus according to claim 11 and claim 12 characterised in that provided in the housing (1) are respective bores (38, 46) for a feed flow of product in a direction towards a cavity (8) provided in the rotary slider (2) and a discharge flow of product which is in a direction towards the packaging unit.
  14. Apparatus according to claims 11 to 13 characterised in that provided in the rotary slider (2) is an opening (39) which communicates with the cavity (8) and which is aligned with the bore (38) in the filling position and with the bore (46) in the starting position.
  15. Apparatus according to claim 14 characterised in that the cavity (8) comprises a cylinder portion (23) and a tubular connection portion (61) which adjoins the cylinder portion (23) and provides the communication between the cylinder portion (23) and the opening (39) and which is angled to provide a good flow configuration.
  16. Apparatus according to claims 13 to 15 characterised in that a piston head (3) is guided in the cavity (8).
  17. Apparatus according to claim 16 characterised in that the piston head (3) is sealed in the cavity (8) by a piston seal (24).
  18. Apparatus according to claims 16 and 17 characterised in that the piston head (3) has a piston rod (9) of a cross-section which transmits forces transversely to its longitudinal direction and which is guided in an opening (13) which passes through the rotary slider (2) and which is of a cross-section which transmits forces adapted to the piston rod (9).
  19. Apparatus according to claim 18 characterised in that the piston head (3) has a piston rod (9) of angular cross-section guided in an opening (13) which passes through the rotary slider (2) and which is of a cross-section corresponding to the angular cross-section.
  20. Apparatus according to claims 11 to 19 characterised in that the rotary slider (2) has at its surface sliding faces (17, 18) on which it is guided with a sliding fit in the axial direction.
  21. Apparatus according to claims 14 to 20 characterised in that the rotary slider (2) has an outside surface (6) which faces towards the housing (1) and which tapers conically in a direction towards the opening (39) and which is guided in a cavity (5) in the housing (1), which cavity tapers towards the bores (38, 46).
  22. Apparatus according to claims 13 to 21 characterised in that, at its end adjacent to the bores (38, 46), the rotary slider (2) has a support surface (62) on which the rotary slider (2) is guided.
  23. Apparatus according to claim 22 characterised in that the support surface (62) of the rotary slider (2) is in the form of a mounting trunnion.
  24. Apparatus according to claim 23 characterised in that the mounting trunnion is guided in a mounting bush (59) which is inserted into the housing (1).
  25. Apparatus according to claim 22 characterised in that the support surface (62) is in the form of a mounting bush, at the end of the rotary slider (2) which is adjacent the bores (38, 46).
  26. Apparatus according to claim 25 characterised in that the internal space (5) is closed at its narrow end by a cap (42) which is connected to the housing (1) and which projects with a mounting trunnion (44) into the cavity (8) and is acted upon by the support surfaces (62).
  27. Apparatus according to claim 26 characterised in that the cap (42) is provided with a run-on surface (60) which is acted upon by the rotary slider (2).
  28. Apparatus according to claim 27 characterised in that the run-on surface (60) is provided with a bearing metal.
  29. Apparatus according to claims 26 to 28 characterised in that the cap (42) is pressed into the front part of the mounting bush (59).
  30. Apparatus according to claims 26 to 29 characterised in that, at its end opposite the mounting trunnion (44), the cavity (8) is closed by at least one wall (11) through which passes the opening (13).
  31. Apparatus according to claim 30 characterised in that, at its end adjacent the wall (11), the cavity (8) is in the form of a cleaning chamber (22), the cross-section of which is greater than that of a sealing means of the piston head (3).
  32. Apparatus according to claim 31 characterised in that by way of through-flow openings (27) which pass through the rotary slider (2) the cleaning chamber (22) is provided with at least one respective cleaning connection (28) and a discharge opening (51) for cleaning agent, which pass through the housing (1).
  33. Apparatus according to claim 32 characterised in that the cleaning connection (28) has two connections (30, 31) of which one opens in the immediate vicinity of the intake opening (27) while the other opens into the snug fit (4).
  34. Apparatus according to claims 26 to 33 characterised in that a cleaning connection (33) is provided at an end (34) of the housing (1), which is adjacent the cap (42), and opens into the internal space (5) which is opened by the rotary slider (2) in the cleaning position.
  35. Apparatus according to claims 13 to 34 characterised in that a cleaning connection (36) opens into an intake (37) for feeding the product to the bore (38).
  36. Apparatus according to claims 16 to 35 characterised in that the rotary slider (2) projects out of the housing (1) with its rear end (12) which is remote from the piston head (3).
  37. Apparatus according to claims 11 to 36, characterised in that a coupling means (19) engages the rotary slider (2) in the region of its rear end (12) which projects out of the housing (1), which coupling means is connected to a drive for moving the rotary slider (2) in the axial direction.
  38. Apparatus according to claim 37 characterised in that the coupling means (19) engages into a groove (16) which is provided in the rear end (12) and whose mutually oppositely disposed, radially extending surfaces are in the form of sliding surfaces (17, 18).
  39. Apparatus according to claims 18 to 38 characterised in that, at its end (10) remote from the piston head (3), the piston rod (9) is provided with a connecting means (15) which is connected to a drive for displacing the piston rod (9) in the axial direction and for rotating same.
EP85115126A 1984-11-29 1985-11-28 Method and apparatus for metering a free-flowing product Expired - Lifetime EP0185958B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT85115126T ATE80105T1 (en) 1984-11-29 1985-11-28 METHOD AND DEVICE FOR MEASURING A FILLABLE PRODUCT.
CA000501473A CA1267391A (en) 1985-11-26 1986-02-10 Method and machine for filling receptacles with flowable materials

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3443557 1984-11-29
DE19843443557 DE3443557A1 (en) 1984-11-29 1984-11-29 METHOD AND DEVICE FOR MEASURING A FLOWABLE PRODUCT

Publications (3)

Publication Number Publication Date
EP0185958A2 EP0185958A2 (en) 1986-07-02
EP0185958A3 EP0185958A3 (en) 1988-11-02
EP0185958B1 true EP0185958B1 (en) 1992-09-02

Family

ID=6251492

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85115126A Expired - Lifetime EP0185958B1 (en) 1984-11-29 1985-11-28 Method and apparatus for metering a free-flowing product

Country Status (4)

Country Link
US (1) US4842026A (en)
EP (1) EP0185958B1 (en)
AT (1) ATE80105T1 (en)
DE (2) DE3443557A1 (en)

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Also Published As

Publication number Publication date
DE3586584D1 (en) 1992-10-08
EP0185958A2 (en) 1986-07-02
US4842026A (en) 1989-06-27
DE3443557A1 (en) 1986-05-28
EP0185958A3 (en) 1988-11-02
ATE80105T1 (en) 1992-09-15

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