EP0248739A1 - Dosage and distribution apparatus for packaging liquid products - Google Patents

Dosage and distribution apparatus for packaging liquid products Download PDF

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Publication number
EP0248739A1
EP0248739A1 EP87401269A EP87401269A EP0248739A1 EP 0248739 A1 EP0248739 A1 EP 0248739A1 EP 87401269 A EP87401269 A EP 87401269A EP 87401269 A EP87401269 A EP 87401269A EP 0248739 A1 EP0248739 A1 EP 0248739A1
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EP
European Patent Office
Prior art keywords
nozzle
chamber
piston
metering
reservoir
Prior art date
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Granted
Application number
EP87401269A
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German (de)
French (fr)
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EP0248739B1 (en
Inventor
Roland Torterotot
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Jagenberg AG
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Torterotot Roland
Erca Holding SARL
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Publication of EP0248739A1 publication Critical patent/EP0248739A1/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

Definitions

  • the invention relates to a metering and dispensing device for packaging liquid products, in particular food products, in pots or similar containers, comprising a movable piston metering device in a cylindrical metering chamber connected through a valve. shutter at a source of product, a distributor with tubular nozzle directed downwards, provided with an inlet orifice and an ejection orifice, movable longitudinally, and comprising a communicating distribution chamber, of a on the one hand, with the metering chamber and, on the other hand, with the exterior through the tubular nozzle and a shutter member cooperating with said nozzle, and actuation mechanisms of the piston and of the nozzle, one of which acts on the piston and the other on said nozzle so as to lower the latter before filling each container with liquid which it introduces therein under the action of displacement of the piston.
  • the tubular nozzle forms part of a vertically movable dispensing head so as to introduce the nozzle into a container as far as the bottom thereof and out of it. of said container.
  • a sterile enclosure such as a tunnel
  • the movable dispensing head sterilizing the elements of the dispenser which are in contact with the liquid product to be packaged is difficult, in particular that of the container filling nozzle, which is fixed below the movable dispensing head partly in the open air and partly in the tunnel and animated by a vertical movement back and forth.
  • the object of the present invention is to provide a solution to these problems and to propose a dosing device the quantities of which dosed remain substantially constant and which lends itself to easy sterilization.
  • the device according to the invention is first of all characterized by the fact that the metering chamber and the distribution chamber are combined in the same enclosure, that the passage channel of the tubular nozzle is permanently closed at least at the lower end of the nozzle by a transverse cover, that at least one lower orifice for ejection of the nozzle opens on the lateral face of the latter just above the transverse cover, than the wall joining in the same enclosure the metering chamber and the distribution chamber comprises at the bottom a guide tube adjusted to the tubular nozzle which is mounted there in a sealed manner and able to slide there between, on the one hand, a high position in which the orifice ejection is housed inside the guide tube and is isolated from the outside, and the inlet port of said nozzle is located at the top of the distribution chamber which then receives all the nozzle at the exception of the lower end e thereof, and, on the other hand, a low position in which the major part of the nozzle protrudes downwards from the guide tube with the exception of its upper end part whose inlet or
  • the enclosure of the metering device can be mounted outside the tunnel so that only one end piece of the guide tube passes tightly through the upper wall of the tunnel and enters it.
  • perfect and complete sterilization of the dispenser and in particular of the nozzle is possible; it suffices to introduce into the chamber, the nozzle being retracted in the high position, superheated water or steam at a suitable temperature. Thanks to this design, the tubular nozzle is able to descend through the tunnel to the bottom of a container and fill it in a sterile environment with a foaming product.
  • the nozzle is provided with an annular seal. which is applied against the guide tube when the nozzle reaches its high position, so that the outward flow path, effert by the liquid nozzle, is then interrupted.
  • the lower end of the nozzle acts as a valve in association with the guide tube and is capable of ensuring the closure of the distribution chamber and of the metering chamber during a new phase of filling the latter.
  • the arrangement according to the invention makes it possible to eliminate in a simple and elegant manner the gases originating from the liquid which formerly tended to accumulate in the metering chamber.
  • the gas bubbles generally form during the upward stroke of the nozzle and of the piston and go up in the distribution chamber preferably along the tubular nozzle and are stopped in their ascent and gathered under the bubble trap to be finally evacuated with the liquid during the fill the next container. As a result, it is ensured that the containers all receive exactly the desired dose of liquid product.
  • the metering and distribution device as shown in the drawing comprises a metering pump constituted by a cylindrical metering chamber 1 of circular section and vertical axis 20 in which a piston 2 alternately moves, this chamber being connected to a reservoir 21 containing a liquid food product P to be packaged in pots or containers such as the pot 3, by a pipe 4 via an inlet valve, for example with a slide valve 5.
  • the piston 2 is connected by a rod of control 6 to an actuating means 23 which causes it to move over a well-defined stroke between a high position (FIGS. 1, 4 and 5) located at the top of the metering chamber 1 and a low position (dotted lines, 6 and 7) located at the bottom of said chamber 1, at the level of the outlet of the pipe 4.
  • the metering and distribution device also comprises a distribution chamber 24 which, according to a first embodiment, is located next to the metering chamber 1 in the same enclosure 25 as the metering chamber 1 and communicates with said metering chamber 1 through a passage opening 26 formed in the lower part of a partition 27 provided between the two chambers 1 and 24.
  • the two metering chambers 1 and distribution 24 are in this case juxtaposed and their axes 20 and 28 are parallel.
  • the reservoir 21 containing the liquid product to be conditioned P is provided directly above the metering chamber 1 and the distribution chamber 24 so that the bottom of the reservoir 21 simultaneously constitutes the upper wall of the distribution chamber 24 , and communicates directly with the upper face of the piston 2 and the part of the metering chamber 1, located above the piston 2. Therefore, the piston rod 6 passes through the reservoir 21 and the inner face of the wall side of the metering chamber 1 is always well wetted, that is to say lubricated by the liquid product P contained in the reservoir 21.
  • the distribution chamber 24 comprises a tubular nozzle 7 of vertical axis which coincides with that (28) of said chamber 24.
  • the bottom of the distribution chamber 24 is provided with a guide tube 9 adjusted to the tubular nozzle 7 which , at its upper end, is connected to a coaxial solid rod 8 sealingly passing through the bottom wall 21a of the reservoir 21 which, according to FIG. 1, constitutes at the same time the upper wall of the distribution chamber 24.
  • the tubular nozzle 7 has at its upper end, an inlet orifice 11 and, at its lower part, at least one ejection orifice, preferably two lateral ejection orifices 12 diametrically opposite and drilled in the side wall of the tubular nozzle 7 , above an annular seal 10 mounted on the lower end of said nozzle where its passage channel 13 is axially permanently closed by a transverse cover 15.
  • the upper end of the tubular nozzle 7 is connected to its coaxial control rod 8 using a cup or inverted bowl or a rigid cap 14 whose top is integral with said rod 8 and whose concave face surrounds and remotely covers the inlet orifice 11 and is fixed to the upper end of the nozzle 7 using several radial spacing fingers 16.
  • this inverted bowl 14 must act as a trap with bubbles and has a maximum lower periphery which is substantially less than the internal periphery of the distribution chamber 24 to avoid any significant pumping effect when the nozzle 7 moves.
  • the nozzle 7 moves in the distribution chamber 24 between, on the one hand, a high position ( Figures 1, 3, 4 and 7) where it is fully or almost fully retracted in the chamber 24 and where it does not allow the flow of liquid out of it, its lower end being closed by the transverse cover 15 and its lateral ejection orifice 12 then being located inside the guide tube 9 against the lower end of which carries the seal 10 provided on the nozzle 7 below the ejection orifice 12, and on the other hand, a low position ( Figures 5, 6) where it emerges from the distribution chamber 24, its orifice upper inlet 11 then being located slightly above the bottom of the chamber 24 provided with the guide tube 9. This upper orifice 11 is, on the other hand, just above the piston 2 when the latter is in the low position (figure 1, broken lines) and the nozzle 7 in the low position (figure, broken lines).
  • the intake valve 5 provided between the reservoir 21 and the metering and distribution device, and more precisely said, between the distribution chamber 24 and the reservoir 21, is constituted by a slide valve comprising a cylindrical body of circular section 29 resting without play on a cradle of suitable shape, in particular semi-cylindrical 30 also of circular section.
  • the superimposed bottoms of the cradle 30 and the reservoir 21 are pierced with an outlet orifice 31 connected to the upper end of the connecting pipe 4 between the reservoir 1 and the metering and distribution device.
  • the cylindrical body 29 has an axial length which is at least equal to three times the diameter of the outlet orifice 31 and in its middle part a cylindrical annular notch 32 whose axial width is at most equal to the diameter of the orifice of outlet 31.
  • One end of the cylindrical body 29 is provided with a coaxial control rod 33 which passes in leaktight manner through the side wall 22 of the reservoir 21.
  • the inlet valve 5 operates in the same manner as 'A drawer distributor which is open when its annular notch 32 covers the outlet orifice 31 and closed when this orifice 31 is closed by a neighboring part of the cylindrical body 29 ( Figure 2).
  • the lower face 2a of the piston 2 is slightly inclined from the bottom up so that in the low position, that is to say the delivery of the piston 2, the the highest lateral part of the inclined lower face 2a is located approximately halfway up the passage opening 26 and the lowest part of said surface 2a is near the bottom of the metering chamber 1.
  • the metering chamber 1 and the distribution chamber 24 are superimposed in the same enclosure 25 which is here cylindrical in shape with vertical axis 20 and circular section.
  • the lower part of the metering chamber is located directly above the upper part of the dispensing chamber 24 and there is no partition between the two chambers 1 and 24.
  • the pipe for connection 4 between the reservoir 21 and the metering and distribution device opens at its lower end in the upper part of the distribution chamber 24 or in the junction zone between the metering 1 and distribution chambers 24.
  • the upper end of the tubular nozzle 7 can be connected directly to the lower end of the control rod 8 which is solid or closed at its lower end.
  • the bubble trap 14 is here constituted by an inverted bowl or a sort of frustoconical cap which surrounds the lateral inlet orifice (s) 11 in the passage channel 13 of the nozzle and is fixed, by its upper end, to the lower end of the rod 8.
  • the cylindrical enclosure 25 has an axial height which is at least equal to the sum of the maximum strokes of the piston 2 and of the tubular nozzle 7, the piston 2 is of annular shape and pierced with a central opening adjusted so that said piston 2 surrounds and slides in leaktight manner on the control rod 8, and the control rod 6 of the piston 2 is of tubular shape which surrounds a part of the control rod 8, and can slide in leaktight manner on the latter.
  • the nozzle 7 is provided, at its upper part, namely immediately at and above its inlet orifice 11, with an inverted bowl 14 of frustoconical shape combined with that of the cavity 34.
  • the bowl 14, which looks like a small umbrella, is narrower than rooms 1 and 24 so as not to play the role of a piston and be easily bypassed by the liquid when the piston 2 and / or itself moves.
  • the metering and distribution device ends at its lower end, by the guide tube 9 by means of which it can be fixed on a tunnel 17 and which can penetrate inside said tunnel 17 for example sterile which makes part of a packaging installation of the type which thermoforms, fills, closes and cuts the receptacles 3 and in which the bottom of the tunnel 17 supplied with a sterile gas at low overpressure is closed in leaktight manner by a thermoplastic strip 18 in which the pots 3 are shaped with their inner face facing the tunnel 17 rendered sterile for the packaging operations, the sterile gas escaping between the lower edges of the tunnel and the strip 18.
  • the strip 18 progresses step by step under the gripper action 19 of a side drive chain.
  • the reservoir 21 disposed above the metering chamber 1 contains a sterile product P, it is necessary to provide means so that the parts of the rods 6 and 8 passing through the reservoir 1 or penetrating into it remain sterile.
  • the reservoir 21 is closed and partially filled with a sterile liquid product P from a suitable source and through a valve 35 whose opening is controlled by a first level probe 36 indicating the minimum level of the product. liquid P in the reservoir 21 and the closing of which is controlled by a second level probe 37 which indicates the maximum level of the product P.
  • the upper free space 38 of the reservoir 21 above the product P is constantly filled and supplied with sterile air at slight overpressure through an orifice 39.
  • the upper ends of the tubular piston rod 6 and the control rod 8 move in the upper free space 38 and are connected separately to two actuation rods 40, 41 whose lower ends move vertically along stroke lengths corresponding respectively to the strokes of the piston 2 and of the nozzle tubular 7.
  • actuating rods 40, 41 with vertical parallel axes also pass through a sterile airlock chamber 42 provided above the reservoir 21, while being tightly guided in the horizontal partition wall 43 between the airlock chamber 42 and the reservoir 21 and in the horizontal upper wall 44 of said chamber 42 supplied continuously with sterilized air at slight overpressure which enters this chamber 42 through an upper orifice 45 and leaves it through a lower orifice 46.
  • the height of the airlock chamber 42 is at least equal to the maximum stroke of the piston 2 or of the tubular nozzle 7, and the pressure of sterile air in this airlock chamber 42 is lower than the pressure of the sterile air in the tank 21.
  • the operation of the metering and distribution device is as follows:
  • the valve 5 is closed, the piston 2 is in the high position and the nozzle 7 descends from its high position in which the bubble trap 14 is located slightly above the mouth of the pipe 4, to take its low position where its lateral ejection orifice 12 is located near the bottom of the pot 3 to be filled ( Figure 5).
  • the pot or container 3 is filled by lowering the piston 2 forcing the liquid to enter the nozzle 7 through its upper inlet orifice 11 to exit therefrom, via its internal passage duct 13, through its ejection orifice lower 12, which is preferably maintained constantly above the bottom of the pot 3.

Abstract

L'invention concerne le conditionnement en pots de produits liquides. Un piston (2), se déplaçant dans une chambre cylindrique de dosage (1), introduit des doses successives de liquide dans des pots (3) via une buse tubulaire (7) mobile verticalement, qui peut se rétracter entièrement à l'intérieur de la chambre de distribution (24) et qui possède un piège à bulles (14) tronconique assurant l'évacuation des gaz issus du liquide.The invention relates to the packaging of liquid products in jars. A piston (2), moving in a cylindrical dosing chamber (1), introduces successive doses of liquid into pots (3) via a vertically movable tubular nozzle (7), which can retract completely inside the distribution chamber (24) and which has a frustoconical bubble trap (14) ensuring the evacuation of gases from the liquid.

Description

L'invention se rapporte à un dispositif de dosage et de distribution pour le conditionnement de produits liquides, en particulier de produits alimentaires, dans des pots ou récipients analogues, comprenant un doseur à piston mobile dasns une chambre de dosage cylindrique raccordée à travers une vanne d'obturation à une source de produit, un distributeur à buse tubulaire dirigée vers le bas, munie d'un orifice d'entrée et d'un orifice d'éjection, mobile longitudinalement, et comportant une chambre de distribution communiquant, d'une part, avec la chambre du doseur et, d'autre part, avec l'extérieur à travers la buse tubulaire et un organe obturateur coopérant avec ladite buse, et des mécanismes d'actionnement du piston et de la buse dont l'un agit sur le piston et l'autre sur ladite buse de façon à faire s'abaisser cette dernière avant le remplissage de chaque récipient avec du liquide qu'elle y introduit sous l'action de refoulement du piston.The invention relates to a metering and dispensing device for packaging liquid products, in particular food products, in pots or similar containers, comprising a movable piston metering device in a cylindrical metering chamber connected through a valve. shutter at a source of product, a distributor with tubular nozzle directed downwards, provided with an inlet orifice and an ejection orifice, movable longitudinally, and comprising a communicating distribution chamber, of a on the one hand, with the metering chamber and, on the other hand, with the exterior through the tubular nozzle and a shutter member cooperating with said nozzle, and actuation mechanisms of the piston and of the nozzle, one of which acts on the piston and the other on said nozzle so as to lower the latter before filling each container with liquid which it introduces therein under the action of displacement of the piston.

Dans les dispositifs de ce genre connus par exemple par le brevet français 2 067 983 la buse tubulaire fait partie d'une tête de distribution verticalement mobile de façon à introduire la buse dans un récipient jusqu'au fond de celui-ci et à la sortir dudit récipient. Lorsque les récipients doivent être remplis dans une enceinte stérile, telle qu'un tunnel, dans lequel pénètre par le haut à travers une sorte de sas étanche aux gaz, une partie de la tête de distribution mobile, la stérilisation des élements du distributeur qui sont en contact avec le produit liquide à conditionner est difficile, en particulier celle de la buse de remplissage des récipients, qui est fixée par-dessous la tête de distribution mobile en partie à l'air libre et en partie dans le tunnel et animée d'un mouvement vertical de va-et-vient. Pour faciliter la stérilisation des éléments du distributeur qui sont en contact avec le produit liquide à conditionner, on a alors proposé d'immobiliser la tête de distribution en la fixant sur le tunnel et de faire pénétrer dans le tunnel stérile des embouts de buse de très faible longueur. Cependant, la stérilisation de ces embouts de buse pose toujours un problème et en plus, ce type de buse courte ne permet pas la distribution de liquides moussants tels que le lait. En outre, l'accumulation dans la chambre du doseur des fractions gazeuses que contient le produit liquide quel qu'il soit modifie progressivement la quantité de liquide dosée et introduite à chaque fois dans ladite chambre, de sorte que la dose de liquide préparée pour le remplissage des récipients de conditionnement diminue progressivement.In devices of this type known for example from French patent 2,067,983, the tubular nozzle forms part of a vertically movable dispensing head so as to introduce the nozzle into a container as far as the bottom thereof and out of it. of said container. When the containers must be filled in a sterile enclosure, such as a tunnel, into which penetrates from above through a sort of gas-tight airlock, part of the movable dispensing head, sterilizing the elements of the dispenser which are in contact with the liquid product to be packaged is difficult, in particular that of the container filling nozzle, which is fixed below the movable dispensing head partly in the open air and partly in the tunnel and animated by a vertical movement back and forth. To facilitate the sterilization of the elements of the dispenser which are in contact with the liquid product to be packaged, it was then proposed to immobilize the dispensing head by fixing it on the tunnel and to make nozzle tips of very short length. However, sterilizing these tips nozzle is always a problem and in addition, this type of short nozzle does not allow the distribution of foaming liquids such as milk. In addition, the accumulation in the metering chamber of the gaseous fractions contained in the liquid product whatever it is gradually modifies the quantity of liquid metered and introduced each time into said chamber, so that the dose of liquid prepared for the filling of the packaging containers gradually decreases.

La présente invention a pour but d'apporter une solution à ces problèmes et de proposer un dispositif de dosage dont les quantités dosées restent sensiblement constantes et qui se prête à une stérilisation facile.The object of the present invention is to provide a solution to these problems and to propose a dosing device the quantities of which dosed remain substantially constant and which lends itself to easy sterilization.

Le dispositif selon l'invention est tout d'abord caractérisé par le fait que la chambre de dosage et la chambre de distribution sont réunies dans une même enceinte, que le canal de passage de la buse tubulaire est obturé en permanence au moins à l'extrémité inférieure de la buse par un opercule transversal, qu'au moins un orifice inférieur d'éjection de la buse débouche sur la face latérale de celle-ci juste au-dessus de l'opercule transversal, que la paroi réunissant dans la même enceinte la chambre de dosage et la chambre de distribution comporte au fond une tubulure de guidage ajustée à la buse tubulaire qui y est montée de façon étanche et à pouvoir y coulisser entre, d'une part, une position haute dans laquelle l'orifice d'éjection est logé à l'intérieur de la tubulure de guidage et est isolé de l'extérieur, et l'orifice d'entrée de ladite buse se trouve à la partie supérieure de la chambre de distribution qui reçoit alors toute la buse à l'exception de la partie extrême inférieure de celle-ci, et, d'autre part, une position basse dans laquelle la majeure partie de la buse dépasse vers le bas de la tubulure de guidage à l'exception de sa partie extrême supérieure dont l'orifice d'entrée se trouve alors près du fond de la chambre de distribution, et que l'orifice d'entrée de la buse tubulaire est surmonté et entouré d'un piège à bulles présentant la forme d'une cuvette inversée solidaire de l'extrêmité supérieure de la buse tubulaire et présentant un pourtour inférieur à celui de la chambre de distribution pour y éviter tout effet sensible de pomage.The device according to the invention is first of all characterized by the fact that the metering chamber and the distribution chamber are combined in the same enclosure, that the passage channel of the tubular nozzle is permanently closed at least at the lower end of the nozzle by a transverse cover, that at least one lower orifice for ejection of the nozzle opens on the lateral face of the latter just above the transverse cover, than the wall joining in the same enclosure the metering chamber and the distribution chamber comprises at the bottom a guide tube adjusted to the tubular nozzle which is mounted there in a sealed manner and able to slide there between, on the one hand, a high position in which the orifice ejection is housed inside the guide tube and is isolated from the outside, and the inlet port of said nozzle is located at the top of the distribution chamber which then receives all the nozzle at the exception of the lower end e thereof, and, on the other hand, a low position in which the major part of the nozzle protrudes downwards from the guide tube with the exception of its upper end part whose inlet orifice is then finds near the bottom of the distribution chamber, and that the inlet opening of the tubular nozzle is surmounted and surrounded by a bubble trap having the shape of an inverted bowl secured to the upper end of the nozzle tubular and having a circumference smaller than that of the distribution chamber to avoid any significant pumping effect.

Une telle disposition, groupant étroitement le doseur et le distributeur, conduit à une structure simple et compacte. L'enceinte du dispositif de dosage peut être montée à l'extérieur du tunnel de sorte que seul un embout de la tubulure de guidage traverse de façon étanche la paroi supérieure du tunnel et pénètre dans celui-ci. Ainsi, une stérilisation parfaite et intégrale du doseur et notamment de la buse est possible ; il suffit pour cela d'introduire dans la chambre, la buse y étant rétractée en position haute, de l'eau surchauffée ou de la vapeur à température convenable. Grâce à cette conception, la buse tubulaire est capable de descendre à travers le tunnel jusqu'au fond d'un récipient et remplir celui-ci dans une ambiance stérile avec un produit moussant.Such an arrangement, closely grouping the dispenser and the distributor, results in a simple and compact structure. The enclosure of the metering device can be mounted outside the tunnel so that only one end piece of the guide tube passes tightly through the upper wall of the tunnel and enters it. Thus, perfect and complete sterilization of the dispenser and in particular of the nozzle is possible; it suffices to introduce into the chamber, the nozzle being retracted in the high position, superheated water or steam at a suitable temperature. Thanks to this design, the tubular nozzle is able to descend through the tunnel to the bottom of a container and fill it in a sterile environment with a foaming product.

En dessous de l'orifice inférieur d'éjection, percé dans la paroi latérale de la buse et au niveau de l'opercule transversal obturant le conduit ou canal interne de celle-ci, la buse est munie d'un joint annulaire d'étanchéité qui s'applique contre la tubulure de guidage lorsque la buse atteint sa position haute, de sorte que la voie d'écoulement vers l'extérieur, efferte par la buse au liquide, est alors interrompue. Ainsi, l'extrémité inférieure de la buse fait office de valve en association avec la tubulure de guidage et est susceptible d'assurer la fermeture de la chambre de distribution et de la chambre de dosage durant une nouvelle phase de remplissage de ces dernières. En outre, la disposition selon l'invention permet d'éliminer de façon simple et élégante les gaz issus du liquide qui autrefois avaient tendance à s'accumuler dans la chambre du doseur. Les bulles de gaz se forment généralement pendant la course ascendante de la buse et du piston et remontent dans la chambre de distribution de préférence le long de la buse tubulaire et sont arrêtées dans leur ascension et regroupées sous le piège à bulles pour être finalement évacuées avec le liquide au cours du remplissage du récipient suivant. Par suit, on est assuré que les récipients reçoivent tous exactement la dose de produit liquide désirée.Below the lower ejection orifice, drilled in the side wall of the nozzle and at the level of the transverse seal closing the conduit or internal channel thereof, the nozzle is provided with an annular seal. which is applied against the guide tube when the nozzle reaches its high position, so that the outward flow path, effert by the liquid nozzle, is then interrupted. Thus, the lower end of the nozzle acts as a valve in association with the guide tube and is capable of ensuring the closure of the distribution chamber and of the metering chamber during a new phase of filling the latter. In addition, the arrangement according to the invention makes it possible to eliminate in a simple and elegant manner the gases originating from the liquid which formerly tended to accumulate in the metering chamber. The gas bubbles generally form during the upward stroke of the nozzle and of the piston and go up in the distribution chamber preferably along the tubular nozzle and are stopped in their ascent and gathered under the bubble trap to be finally evacuated with the liquid during the fill the next container. As a result, it is ensured that the containers all receive exactly the desired dose of liquid product.

D'autres caractéristiques et avantages de l'invention ressortiront plus clairement de la description qui va suivre, en regard des dessins annexés, d'un exemple de réalisation non limitatif.

  • La figure 1 est une vue en élévation d'une coupe verticale à travers un premier mode de réalisation du dispositif de dosage et de distribution conforme à l'invention ;
  • la figure 2 est une vue en coupe d'un détail selon la ligne II-II de la figure 1 ;
  • la figure 3 est une vue en élévation partiellement en coupe de la buse tubulaire représentée à une échelle plus grande, et
  • les figures 4 à 7 représentent schématiquement, en coupe axiale, un deuxième mode de réalisation du dispositif selon l'invention, dans quatre phases de fonctionnement successives correspondant respectivement à la fin du remplissage de la chambre du doseur, au début du remplissage d'un récipient, à la fin du remplissage de celui-ci et au début du remplissage de ladite chambre.
Other characteristics and advantages of the invention will emerge more clearly from the description which follows, with reference to the appended drawings, of a nonlimiting exemplary embodiment.
  • Figure 1 is an elevational view of a vertical section through a first embodiment of the metering and distribution device according to the invention;
  • Figure 2 is a sectional view of a detail along the line II-II of Figure 1;
  • FIG. 3 is an elevation view partially in section of the tubular nozzle shown on a larger scale, and
  • FIGS. 4 to 7 diagrammatically represent, in axial section, a second embodiment of the device according to the invention, in four successive operating phases corresponding respectively to the end of filling of the metering chamber, to the start of filling of a container, at the end of filling thereof and at the start of filling of said chamber.

Le dispositif de dosage et de distribution tel que représenté sur le dessin comprend une pompe doseuse constituée par une chambre cylindrique de dosage 1 de section circulaire et d'axe vertical 20 dans laquelle se déplace alternativement un piston 2, cette chambre étant reliée à un réservoir 21 contenant un produit liquide alimentaire P à conditionner dans des pots ou récipients tels que le pot 3, par une canalisation 4 via une soupape d'admission par exemple à tiroir 5. A sa face supérieure, le piston 2 est relié par une tige de commande 6 à un moyen d'actionnement 23 qui le fait se déplacer sur une course bien déterminée entre une position haute (figures 1, 4 et 5) située au sommet de la chambre de dosage 1 et une position basse (figures 1 en pointillé, 6 et 7) située à la partie inférieure de ladite chambre 1, au niveau du débouché de la canalisation 4. Le dispositif de dosage et de distribution comprend aussi une chambre de distribution 24 qui, selon un premier mode de réalisation, se trouve à côté de la chambre de dosage 1 dans la même enceinte 25 que la chambre de dosage 1 et communique avec ladite chambre de dosage 1 à travers une ouverture de passage 26 ménagée dans la partie inférieure d'une cloison de séparation 27 prévue entre les deux chambres 1 et 24. Les deux chambres de dosage 1 et de distribution 24 sont dans ce cas juxtaposées et leurs axes 20 et 28 sont parallèles. Le réservoir 21 contenant le produit liquide à conditionner P est prévu directement au-dessus de la chambre de dosage 1 et de la chambre de distribution 24 de sorte que le fond du réservoir 21 constitue en même temps la paroi supérieure de la chambre de distribution 24, et communique directement avec la face supérieure du piston 2 et la partie de la chambre de dosage 1, se trouvant au-dessus du piston 2. De ce fait, la tige de piston 6 traverse le réservoir 21 et la face intérieure de la paroi latérale de la chambre de dosage 1 est toujours bien mouillée, c'est-à-dire lubrifiée par le produit liquide P contenu dans le réservoir 21.The metering and distribution device as shown in the drawing comprises a metering pump constituted by a cylindrical metering chamber 1 of circular section and vertical axis 20 in which a piston 2 alternately moves, this chamber being connected to a reservoir 21 containing a liquid food product P to be packaged in pots or containers such as the pot 3, by a pipe 4 via an inlet valve, for example with a slide valve 5. At its upper face, the piston 2 is connected by a rod of control 6 to an actuating means 23 which causes it to move over a well-defined stroke between a high position (FIGS. 1, 4 and 5) located at the top of the metering chamber 1 and a low position (dotted lines, 6 and 7) located at the bottom of said chamber 1, at the level of the outlet of the pipe 4. The metering and distribution device also comprises a distribution chamber 24 which, according to a first embodiment, is located next to the metering chamber 1 in the same enclosure 25 as the metering chamber 1 and communicates with said metering chamber 1 through a passage opening 26 formed in the lower part of a partition 27 provided between the two chambers 1 and 24. The two metering chambers 1 and distribution 24 are in this case juxtaposed and their axes 20 and 28 are parallel. The reservoir 21 containing the liquid product to be conditioned P is provided directly above the metering chamber 1 and the distribution chamber 24 so that the bottom of the reservoir 21 simultaneously constitutes the upper wall of the distribution chamber 24 , and communicates directly with the upper face of the piston 2 and the part of the metering chamber 1, located above the piston 2. Therefore, the piston rod 6 passes through the reservoir 21 and the inner face of the wall side of the metering chamber 1 is always well wetted, that is to say lubricated by the liquid product P contained in the reservoir 21.

La chambre de distribution 24 comporte une buse tubulaire 7 d'axe vertical qui coïncide avec celui (28) de ladite chambre 24. Le fond de la chambre de distribution 24 est muni d'une tubulure de guidage 9 ajusté à la buse tubulaire 7 qui, à son extrémité supérieure, est reliée à une tige pleine coaxiale 8 traversant de façon étanche la paroi de fond 21a du réservoir 21 qui, selon la figure 1, constitue en même temps la paroi supérieure de la chambre de distribution 24. La buse tubulaire 7 présente à son extrémité supérieure, un orifice d'entrée 11 et, à sa partie inférieure, au moins un orifice d'éjection, de préférence deux orifices latéraux d'éjection 12 diamétralement opposés et percés dans la paroi latérale de la buse tubulaire 7, au-dessus d'un joint annulaire d'étanchéité 10 monté sur l'extrémité inférieure de ladite buse où son canal de passage 13 est axialement obturé en permanence par un opercule transversal 15.The distribution chamber 24 comprises a tubular nozzle 7 of vertical axis which coincides with that (28) of said chamber 24. The bottom of the distribution chamber 24 is provided with a guide tube 9 adjusted to the tubular nozzle 7 which , at its upper end, is connected to a coaxial solid rod 8 sealingly passing through the bottom wall 21a of the reservoir 21 which, according to FIG. 1, constitutes at the same time the upper wall of the distribution chamber 24. The tubular nozzle 7 has at its upper end, an inlet orifice 11 and, at its lower part, at least one ejection orifice, preferably two lateral ejection orifices 12 diametrically opposite and drilled in the side wall of the tubular nozzle 7 , above an annular seal 10 mounted on the lower end of said nozzle where its passage channel 13 is axially permanently closed by a transverse cover 15.

L'extrémité supérieure de la buse tubulaire 7 est reliée à sa tige de commande coaxiale 8 à l'aide d'une coupelle ou cuvette inversée ou d'une calotte rigide 14 dont le sommet est solidaire de ladite tige 8 et dont la face concave entoure et recouvre à distance l'orifice d'entrée 11 et est fixée à l'extrémité supérieure de la buse 7 à l'aide de plusieurs doigts d'écartement radiaux 16. Il est à noter que cette cuvette inversée 14 faut office de piège à bulles et présente un pourtour inférieur maximal qui est sensiblement inférieur au pourtour intérieur de la chambre de distribution 24 pour éviter tout effet sensible de pompage lors du déplacement de la buse 7.The upper end of the tubular nozzle 7 is connected to its coaxial control rod 8 using a cup or inverted bowl or a rigid cap 14 whose top is integral with said rod 8 and whose concave face surrounds and remotely covers the inlet orifice 11 and is fixed to the upper end of the nozzle 7 using several radial spacing fingers 16. It should be noted that this inverted bowl 14 must act as a trap with bubbles and has a maximum lower periphery which is substantially less than the internal periphery of the distribution chamber 24 to avoid any significant pumping effect when the nozzle 7 moves.

La buse 7 se déplace dans la chambre de distribution 24 entre, d'une part, une position haute (figures 1, 3, 4 et 7) où elle est entièrement ou presque entièrement rétractée dans la chambre 24 et où elle ne permet pas l'écoulement du liquide hors de celle-ci, son extrémite inférieure étant obturée par l'opercule transversal 15 et son orifice latéral d''éjection 12 se trouvant alors à l'intérieur de la tubulure de guidage 9 contre l'extrémité inférieure de laquelle porte le joint d'étanchéité 10 prévu sur la buse 7 en dessous de l'orifice d'éjection 12, et d'autre part, une position basse (figures 5, 6) où elle émerge de la chambre de distribution 24, son orifice supérieur d'entrée 11 se trouvant alors légèrement au-dessus du fond de la chambre 24 muni de la tubulure de guidage 9. Cet orifice supérieur 11 se trouve, d'autre part, juste au-dessus du piston 2 lorsque celui-ci est en position basse (figure 1, traits interrompus) et la buse 7 en position basse (figure, traits interrompus).The nozzle 7 moves in the distribution chamber 24 between, on the one hand, a high position (Figures 1, 3, 4 and 7) where it is fully or almost fully retracted in the chamber 24 and where it does not allow the flow of liquid out of it, its lower end being closed by the transverse cover 15 and its lateral ejection orifice 12 then being located inside the guide tube 9 against the lower end of which carries the seal 10 provided on the nozzle 7 below the ejection orifice 12, and on the other hand, a low position (Figures 5, 6) where it emerges from the distribution chamber 24, its orifice upper inlet 11 then being located slightly above the bottom of the chamber 24 provided with the guide tube 9. This upper orifice 11 is, on the other hand, just above the piston 2 when the latter is in the low position (figure 1, broken lines) and the nozzle 7 in the low position (figure, broken lines).

Selon le mode de réalisation représenté sur les figures 1 et 2, la soupape d'admission 5 prévue entre le réservoir 21 et le dispositif de dosage et de distribution, et plus précisément dit, entre la chambre de distribution 24 et le réservoir 21, est constituée par une soupape à tiroir comprenant un corps cylindrique de section circulaire 29 reposant sans jeu sur un berceau de forme appropriée, notamment semi-cylindrique 30 également de section circulaire. Les fonds superposés du berceau 30 et du réservoir 21 sont percés d'un orifice de sortie 31 raccordé à l'extrémité supérieure de la canalisation de liaison 4 entre le réservoir 1 et le dispositif de dosage et de distribution. Le corps cylindrique 29 présente une longueur axiale qui est au moins égale à trois fois le diamètre de l'orifice de sortie 31 et dans sa partie médiane une échancrure annulaire cylindrique 32 dont la largeur axiale est au maximum égale au diamètre de l'orifice de sortie 31. L'une des extrémités du corps cylindrique 29 est munie d'une tige coaxiale de commande 33 qui traverse d'une façon étanche la paroi latérale 22 du réservoir 21. Ainsi, la soupape d'admission 5 fonctionne à la manière d'un distributeur à tiroir qui est ouvert lorsque son échancrure annulaire 32 couvre l'orifice de sortie 31 et fermé lorsque cet orifice 31 est obturé par une partie voisine du corps cylindrique 29 (figure 2).According to the embodiment shown in FIGS. 1 and 2, the intake valve 5 provided between the reservoir 21 and the metering and distribution device, and more precisely said, between the distribution chamber 24 and the reservoir 21, is constituted by a slide valve comprising a cylindrical body of circular section 29 resting without play on a cradle of suitable shape, in particular semi-cylindrical 30 also of circular section. The superimposed bottoms of the cradle 30 and the reservoir 21 are pierced with an outlet orifice 31 connected to the upper end of the connecting pipe 4 between the reservoir 1 and the metering and distribution device. The cylindrical body 29 has an axial length which is at least equal to three times the diameter of the outlet orifice 31 and in its middle part a cylindrical annular notch 32 whose axial width is at most equal to the diameter of the orifice of outlet 31. One end of the cylindrical body 29 is provided with a coaxial control rod 33 which passes in leaktight manner through the side wall 22 of the reservoir 21. Thus, the inlet valve 5 operates in the same manner as 'A drawer distributor which is open when its annular notch 32 covers the outlet orifice 31 and closed when this orifice 31 is closed by a neighboring part of the cylindrical body 29 (Figure 2).

Dans le cas du mode de réalisation selon les figures 1 et 2, la face inférieure 2a du piston 2 est légèrement inclinée de bas en haut de sorte qu'en position basse, c'est-à-dire de refoulement du piston 2, la partie latérale la plus élevée de la face inférieure inclinée 2a se trouve à peu près à mi-hauteur de l'ouverture de passage 26 et la partie la plus basse de ladite surface 2a près du fond de la chambre de dosage 1. Ainsi, si des bulles de gaz s'accumulent en dessous du piston 2, elles peuvent facilement être transférées à la chambre de distribution 24 et notamment vers le piège à bulles 14 d'où elles seront évacuées à travers la buse tubulaire 7. Pour éviter que des bulles de gaz s'accumulent dans la partie haute de la chambre de distribution 24 au-dessus de la cuvette 14, on peut donner à la face inférieure de la paroi supérieure 33 de cette chambre de distribution 24 une forme concave qui épouse parfaitement la forme de la face supérieure du piège à bulles 14 de sorte que les bulles sont chassées vers le bas en en dessous dudit piège 14 lorsque celui-ci arrive en position haute.In the case of the embodiment according to FIGS. 1 and 2, the lower face 2a of the piston 2 is slightly inclined from the bottom up so that in the low position, that is to say the delivery of the piston 2, the the highest lateral part of the inclined lower face 2a is located approximately halfway up the passage opening 26 and the lowest part of said surface 2a is near the bottom of the metering chamber 1. Thus, if gas bubbles accumulate below the piston 2, they can easily be transferred to the distribution chamber 24 and in particular to the bubble trap 14 from where they will be evacuated through the tubular nozzle 7. To prevent bubbles gas accumulates in the upper part of the distribution chamber 24 above the bowl 14, it is possible to give the underside of the upper wall 33 of this distribution chamber 24 a concave shape which perfectly matches the shape of the upper face of the bubble trap 14 so that the b They are driven down below said trap 14 when the latter arrives in the high position.

Selon le deuxième mode de réalisation représenté sur les figures 4 à 7, la chambre de dosage 1 et la chambre de distribution 24 sont superposées dans la même enceinte 25 qui est ici de forme cylindrique à axe vertical 20 et de section circulaire. Dans ce cas, la partie inférieure de la chambre de dosage se trouve directement au-dessus de la partie supérieure de la chambre de distribution 24 et il n'y a pas de cloison de séparation entre les deux chambres 1 et 24. La canalisation de liaison 4 entre le réservoir 21 et le dispositif de dosage et de distribution débouche à son extrémité inférieure dans la partie haute de la chambre de distribution 24 ou dans la zone de jonction entre les chambres de dosage 1 et de distribution 24.According to the second embodiment shown in Figures 4 to 7, the metering chamber 1 and the distribution chamber 24 are superimposed in the same enclosure 25 which is here cylindrical in shape with vertical axis 20 and circular section. In this case, the lower part of the metering chamber is located directly above the upper part of the dispensing chamber 24 and there is no partition between the two chambers 1 and 24. The pipe for connection 4 between the reservoir 21 and the metering and distribution device opens at its lower end in the upper part of the distribution chamber 24 or in the junction zone between the metering 1 and distribution chambers 24.

Comme on peut le voir sur les figures 3 à 7, l'extrémité supérieure de la buse tubulaire 7 peut être raccordée directement à l'extrémité inférieure de la tige de commande 8 qui est pleine ou obturée à son extrémité inférieure. Le piège à bulles 14 est ici constitué par une cuvette inversée ou une sorte de chapeau tronconique qui entoure le ou les orifices latéraux d'entrée 11 dans le canal de passage 13 de la buse et est fixé, par son extrémité supérieure, à l'extrémité inférieure de la tige 8. En raison de la superposition des chambres 1 et 24, l'enceinte cylindrique 25 présente une hauteur axiale qui est au moins égale à la somme des courses maximales du piston 2 et de la buse tubulaire 7, le piston 2 est de forme annulaire et percé d'une ouverture centrale ajustée de sorte que ledit piston 2 entoure et coulisse de façon étanche sur la tige de commande 8, et la tige de commande 6 du piston 2 est de forme tubulaire qui entoure une partie de la tige de commande 8, et peut coulisser de façon étanche sur cette dernière.As can be seen in Figures 3 to 7, the upper end of the tubular nozzle 7 can be connected directly to the lower end of the control rod 8 which is solid or closed at its lower end. The bubble trap 14 is here constituted by an inverted bowl or a sort of frustoconical cap which surrounds the lateral inlet orifice (s) 11 in the passage channel 13 of the nozzle and is fixed, by its upper end, to the lower end of the rod 8. Due to the superposition of the chambers 1 and 24, the cylindrical enclosure 25 has an axial height which is at least equal to the sum of the maximum strokes of the piston 2 and of the tubular nozzle 7, the piston 2 is of annular shape and pierced with a central opening adjusted so that said piston 2 surrounds and slides in leaktight manner on the control rod 8, and the control rod 6 of the piston 2 is of tubular shape which surrounds a part of the control rod 8, and can slide in leaktight manner on the latter.

Dans la face inférieure du piston 2 peut être creusée, le cas échéant, une cavité 34 en forme de cavité tronconique tournée vers le bas, centrée sur l'axe 20 et entièrement située au-dessous de la bague d'étanchéité intérieure du piston 2. La buse 7 est dotée, à sa partie supérieure, à savoir immédiatement au niveau et au-dessus de son orifice d'entrée 11, d'une cuvette inversée 14 de forme tronconique conjuguée de celle de la cavité 34. La cuvette 14, qui ressemble à un petit parapluie, est moins large que les chambres 1 et 24 pour ne pas y jouer le rôle d'un piston et être aisément contournable par le liquide lorsque le piston 2 et/ou elle-même se déplace(nt).In the lower face of the piston 2 can be hollowed out, if necessary, a cavity 34 in the shape of a frustoconical cavity facing downwards, centered on the axis 20 and entirely located below the inner sealing ring of the piston 2 The nozzle 7 is provided, at its upper part, namely immediately at and above its inlet orifice 11, with an inverted bowl 14 of frustoconical shape combined with that of the cavity 34. The bowl 14, which looks like a small umbrella, is narrower than rooms 1 and 24 so as not to play the role of a piston and be easily bypassed by the liquid when the piston 2 and / or itself moves.

Le dispositif de dosage et de distribution se termine à son extrémité inférieure, par la tubulure de guidage 9 par l'intermédiaire de laquelle il peut être fixé sur un tunnel 17 et qui peut pénétrer à l'intérieur dudit tunnel 17 par exemple stérile qui fait partie d'une installation de conditionnement du type qui thermoforme, remplit, obture et découpe les récipients 3 et dans laquelle le fond du tunnel 17 alimenté avec un gaz stérile à faible surpression est fermé de façon non étanche par une bande thermoplastique 18 dans laquelle les pots 3 sont façonnés avec leur face intérieure tournée vers le tunnel 17 rendu stérile pour les opérations de conditionnement, le gaz stérile s'échappant entre les bords inférieurs du tunnel et la bande 18. La bande 18 progresse pas-à-pas sous l'action de pinces 19 d'une chaîne d'entraînement latérale. Par ailleurs, lorsque le réservoir 21 disposé au-dessus de la chambre de dosage 1 contient un produit stérile P, il faut prévoir des moyens pour que les parties des tiges 6 et 8 traversant le réservoir 1 ou pénétrant dans celui-ci restent stériles.The metering and distribution device ends at its lower end, by the guide tube 9 by means of which it can be fixed on a tunnel 17 and which can penetrate inside said tunnel 17 for example sterile which makes part of a packaging installation of the type which thermoforms, fills, closes and cuts the receptacles 3 and in which the bottom of the tunnel 17 supplied with a sterile gas at low overpressure is closed in leaktight manner by a thermoplastic strip 18 in which the pots 3 are shaped with their inner face facing the tunnel 17 rendered sterile for the packaging operations, the sterile gas escaping between the lower edges of the tunnel and the strip 18. The strip 18 progresses step by step under the gripper action 19 of a side drive chain. Furthermore, when the reservoir 21 disposed above the metering chamber 1 contains a sterile product P, it is necessary to provide means so that the parts of the rods 6 and 8 passing through the reservoir 1 or penetrating into it remain sterile.

A cet effet, le réservoir 21 est fermé et partiellement rempli avec un produit liquide stérile P à partir d'une source convenable et à travers une vanne 35 dont l'ouverture est commandée par une première sonde de niveau 36 indiquant le niveau minimum du produit liquide P dans le réservoir 21 et dont la fermeture est commandée par une deuxième sonde de niveau 37 qui indique le niveau maximal du produit P. L'espace libre supérieur 38 du réservoir 21 au-dessus du produit P est rempli et alimenté en permanence avec de l'air stérile en légère surpression à travers un orifice 39. Les extrémités supérieures de la tige tubulaire de piston 6 et de la tige de commande 8 se déplaçent dans l'espace libre supérieur 38 et sont raccordées séparément à deux tiges d'actionnement 40, 41 dont les extrémités inférieures se déplaçent verticalement suivant des longueurs de course correspondant respectivement aux courses du piston 2 et de la buse tubulaire 7. Ces tiges d'actionnement 40, 41 à axes parallèles verticaux traversent aussi une chambre de sas stérile 42 prévue au-dessus du réservoir 21, tout en étant guidées de façon étanche dans la paroi horizontale de séparation 43 entre la chambre de sas 42 et le réservoir 21 et dans la paroi supérieure horizontale 44 de ladite chambre 42 alimentée en permanence avec de l'air stérilisé en légère surpression qui entre dans cette chambre 42 par un orifice supérieur 45 et en sort à travers un orifice inférieur 46. La hauteur de la chambre de sas 42 est au moins égale à la course maximale du piston 2 ou de la buse tubulaire 7, et la pression d'air stérile dans cette chambre de sas 42 est inférieure à la pression de l'air stérile dans le réservoir 21. Ainsi, les risques de pollution dans le réservoir 21 sont réduits au minimum.To this end, the reservoir 21 is closed and partially filled with a sterile liquid product P from a suitable source and through a valve 35 whose opening is controlled by a first level probe 36 indicating the minimum level of the product. liquid P in the reservoir 21 and the closing of which is controlled by a second level probe 37 which indicates the maximum level of the product P. The upper free space 38 of the reservoir 21 above the product P is constantly filled and supplied with sterile air at slight overpressure through an orifice 39. The upper ends of the tubular piston rod 6 and the control rod 8 move in the upper free space 38 and are connected separately to two actuation rods 40, 41 whose lower ends move vertically along stroke lengths corresponding respectively to the strokes of the piston 2 and of the nozzle tubular 7. These actuating rods 40, 41 with vertical parallel axes also pass through a sterile airlock chamber 42 provided above the reservoir 21, while being tightly guided in the horizontal partition wall 43 between the airlock chamber 42 and the reservoir 21 and in the horizontal upper wall 44 of said chamber 42 supplied continuously with sterilized air at slight overpressure which enters this chamber 42 through an upper orifice 45 and leaves it through a lower orifice 46. The height of the airlock chamber 42 is at least equal to the maximum stroke of the piston 2 or of the tubular nozzle 7, and the pressure of sterile air in this airlock chamber 42 is lower than the pressure of the sterile air in the tank 21. Thus, the risks of pollution in the tank 21 are reduced to a minimum.

Le fonctionnement du dispositif de dosage et de distribution est le suivant:The operation of the metering and distribution device is as follows:

En fin de remplissage des chambres superposées 1 et 24 avec le liquide à conditionner (figure 4) la vanne 5 est fermée, le piston 2 se trouve en position haute et la buse 7 descend de sa position haute dans laquelle le piège à bulles 14 se trouve légèrement au-dessus de l'embouchure de la canalisation 4, pour prendre sa position basse où son orifice latéral d'éjection 12 se trouve proche du fond du pot 3 qu'il s'agit de remplir (figure 5). Le remplissage du pot ou récipient 3 s'effectue par descente du piston 2 forçant le liquide à pénétrer dans la buse 7 par son orifice d'entrée supérieur 11 pour en sortir, via son conduit de passage interne 13, par son orifice d'éjection inférieur 12, lequel est maintenu constamment de préférence au-dessus du fond du pot 3.At the end of filling the superimposed chambers 1 and 24 with the liquid to be conditioned (FIG. 4) the valve 5 is closed, the piston 2 is in the high position and the nozzle 7 descends from its high position in which the bubble trap 14 is located slightly above the mouth of the pipe 4, to take its low position where its lateral ejection orifice 12 is located near the bottom of the pot 3 to be filled (Figure 5). The pot or container 3 is filled by lowering the piston 2 forcing the liquid to enter the nozzle 7 through its upper inlet orifice 11 to exit therefrom, via its internal passage duct 13, through its ejection orifice lower 12, which is preferably maintained constantly above the bottom of the pot 3.

En fin de remplissage (figure 6) on remonte la buse 7 de sorte que son joint d'étanchéité 10 porte de façon étanche contre la tubulure de guidage 9, on ouvre la valve 5 (figure 7) et finale­ment on remonte le piston 2 se trouvant en position basse au-dessus du débouché de la canalisation 4 (figure 6) pour faire entrer une nouvelle dose de liquide dans la chambre de dosage 1 dès que l'espace intérieur de ces dernières sera fermé au niveau de la tubulure de guidage 9 par amenée en position haute de la buse 7 (figure 7) où le joint d'étanchéité 10 porte de façon étanche contre la tubulure de guidage 9. Plusieurs dispositifs tels que celui que l'on vient de décrire peuvent être groupés en batterie pour permettre le remplissage simultané de plusieurs pots juxtaposés 3.At the end of filling (FIG. 6) the nozzle 7 is reassembled so that its seal 10 bears tightly against the guide tube 9, the valve 5 is opened (FIG. 7) and finally the piston 2 is reassembled. located in the low position above the outlet of the pipe 4 (Figure 6) to bring a new dose of liquid into the metering chamber 1 as soon as the interior space of the latter is closed at the guide tube 9 by bringing the nozzle 7 into the high position (FIG. 7) where the seal 10 bears in leaktight manner against the guide tube 9. Several devices such as the one just described can be grouped in a battery to allow the simultaneous filling of several juxtaposed pots 3.

Claims (17)

1. Dispositif de dosage et de distribution pour le conditionnement de produits liquides, en particulier de produits alimentaires, dans des pots ou récipients analogues, comprenant un doseur à piston (2) mobile dans une chambre de dosage cylindrique (1) raccordée à travers une soupape d'admission (5) à un réservoir de produit (21), un distributeur à buse tubulaire (7) munie d'un orifice supérieur d'entrée (11) et d'au moins un orifice inférieur d'éjection (12), dirigée vers le bas, mobile longitudinalement, et comportant une chambre de distribution (24) communiquant, d'une part, avec la chambre (1) du doseur et, d'autre part, avec l'extérieur à travers la buse tubulaire (7) et un organe obturateur (9, 10) coopérant avec ladite buse (7), et des mécanismes d'actionnement (6, 8, 23, 40, 41) du piston (2) et de la buse (7) dont l'un (6, 41, 23) agit sur le piston (2) et l'autre (8, 40, 23) sur ladite buse (7) de façon à faire abaisser cette dernière avant le remplissage de chaque récipient ou pot (3) avec un produit liquide (P) qu'elle y introduit sous l'action de refoulement du piston (2), caractérisé en ce que la chambre de dosage (1) et la chambre de distribution (24) sont réunies dans une même enceinte (25), que le canal de passage (13) de la buse tubulaire (7) est obturé en permanence au moins à l'extrémité inférieure de la buse (7) par un opercule transversal (15), qu'au moins un orifice inférieur d'éjection (12) de la buse (7) débouche sur la face latérale de celle-ci juste au-dessus de l'opercule transversal (15), que la paroi réunissant dans la même enceinte (25) la chambre de dosage (1) et la chambre de distribution (24) comporte au fond une tubulure de guidage (9) ajustée à la buse tubulaire (7) qui y est montée de façon étanche et à pouvoir y coulisser entre, d'une part, une position haute dans laquelle l'orifice d'éjection (12) est logé à l'intérieur de la tubulure de guidage (9) et est isolé de l'extérieur, et l'orifice d'entrée (11) de ladite buse (7) se trouve à la partie supérieure de la chambre de distribution (24) qui reçoit alors toute la buse (7) à l'exception de la partie extrême inférieure de celle-ci,et, d'autre part, une position basse dans laquelle la majeure partie de la buse (7) dépasse vers le bas de la tubulure de guidage (9) à l'exception de sa partie extrême supérieure dont l'orifice d'entrée (11) se trouve alors près du fond de la chambre de distribution (24), et que l'orifice d'entrée (11) de la buse tubulaire est surmonté et entouré d'un piège à bulles (14) présentant la forme d'une cuvette inversée solidaire de l'extrêmité supérieure de la buse tubulaire (7) et présentant un pourtour inférieur à celui de la chambre de distribution (24) pour y éviter tout effet sensible de pompage.1. Dosing and dispensing device for packaging liquid products, in particular food products, in pots or similar containers, comprising a piston metering device (2) movable in a cylindrical metering chamber (1) connected through a inlet valve (5) to a product reservoir (21), a tube nozzle distributor (7) provided with an upper inlet port (11) and at least one lower ejection port (12) , directed downwards, movable longitudinally, and comprising a distribution chamber (24) communicating, on the one hand, with the chamber (1) of the metering device and, on the other hand, with the outside through the tubular nozzle ( 7) and a shutter member (9, 10) cooperating with said nozzle (7), and actuation mechanisms (6, 8, 23, 40, 41) of the piston (2) and of the nozzle (7), the l '' (6, 41, 23) acts on the piston (2) and the other (8, 40, 23) on said nozzle (7) so as to lower the latter before filling each container or jar (3) with a liquid product (P) which it introduces therein under the pushing action of the piston (2), characterized in that the metering chamber (1) and the distribution chamber (24) are combined in the same enclosure (25), that the passage channel (13) of the tubular nozzle (7) is permanently closed at least at the lower end of the nozzle (7) by a transverse cover (15), that at least one lower ejection orifice (12) of the nozzle (7) opens onto the lateral face of the latter just above the transverse cover (15), than the wall joining in the same enclosure (25) the metering chamber (1) and the distribution chamber (24) comprises at the bottom a guide tube (9) adjusted to the tubular nozzle (7) which is mounted there in a sealed manner and able to slide therein between, part, a high position in which the ejection orifice (12) is housed inside the guide tube (9) and is isolated from the outside, and the inlet orifice (11) of said nozzle (7) rove to the upper part of the distribution chamber (24) which then receives the entire nozzle (7) except for the end part lower thereof, and, on the other hand, a low position in which the major part of the nozzle (7) protrudes downwards from the guide tube (9) with the exception of its upper end part whose l the inlet (11) is then located near the bottom of the distribution chamber (24), and the inlet (11) of the tubular nozzle is surmounted and surrounded by a bubble trap (14 ) having the shape of an inverted bowl integral with the upper end of the tubular nozzle (7) and having a circumference less than that of the distribution chamber (24) to avoid any significant pumping effect. 2. Dispositif selon la revendication 1, caractérisé en ce que la chambre de dosage (1) et la chambre de distribution (24) sont juxtaposées dans la même enceinte (25) et communiquent entre elles à travers une ouverture de passasge (26) ménagée dans la partie inférieure d'une cloison de séparation (27) prévue entre les deux chambres (1 et 24).2. Device according to claim 1, characterized in that the metering chamber (1) and the distribution chamber (24) are juxtaposed in the same enclosure (25) and communicate with each other through a passasge opening (26) formed in the lower part of a partition (27) provided between the two chambers (1 and 24). 3. Dispositif selon la revendication 1, caractérisé en ce que la chambre de dosage (1) et la chambre de distribution (24) sont superposées dans une même enceinte cylindrique (25) à axe vertical et de section circulaire, de telle sorte que la partie inférieure de la chambre de dosage (1) se trouve directement au-dessus de la partie supérieure de la chambre de distribution (24).3. Device according to claim 1, characterized in that the metering chamber (1) and the distribution chamber (24) are superimposed in the same cylindrical enclosure (25) with vertical axis and of circular section, so that the lower part of the metering chamber (1) is located directly above the upper part of the dispensing chamber (24). 4. Dispositif selon la revendication 1, caractérisé en ce que l'enceinte (25) commune aux chambres de dosage (1) et de distribution (24) est surmontée du réservoir (21) contenant le produit liquide (P) et que la partie de la chambre de dosage (1) située au-dessus de la face supérieure du piston (2) communique directement avec le fond dudit réservoir (21).4. Device according to claim 1, characterized in that the enclosure (25) common to the metering (1) and distribution (24) chambers is surmounted by the reservoir (21) containing the liquid product (P) and that the part of the metering chamber (1) located above the upper face of the piston (2) communicates directly with the bottom of said tank (21). 5. Dispositif selon la revendication 1, caractérisé en ce en ce que la paroi supérieure de la chambre de distribution (24) est constituée par une partie de la paroi de fond (21a) du réservoir (21).5. Device according to claim 1, characterized in that the upper wall of the distribution chamber (24) is constituted by a part of the bottom wall (21a) of the reservoir (21). 6. Dispositif selon la revendication 1, caractérisé en ce que le débouché de la canalisation de liaison (4) entre le réservoir (21) et l'enceinte (25) est situé dans la zone de jonction entre la chambre de dosage (1) et la chambre de distribution (24).6. Device according to claim 1, characterized in that the outlet of the connecting pipe (4) between the reservoir (21) and the enclosure (25) is located in the junction zone between the metering chamber (1) and the distribution chamber (24). 7. Dispositif selon la revendication 1, caractérisé en ce que l'extrémité supérieure de la buse tubulaire (7) est raccordée à une tige de commande (8) pleine ou obturée à son extrémité inférieure.7. Device according to claim 1, characterized in that the upper end of the tubular nozzle (7) is connected to a control rod (8) solid or closed at its lower end. 8. Dispositif selon la revendication 7, caractérisé en ce que l'extrémité supérieure de la buse tubulaire (7) est raccordée à la tige de commande (8) par l'intermédiaire du piège à bulles (14) et de plusieurs doigts radiaux d'écartement (16).8. Device according to claim 7, characterized in that the upper end of the tubular nozzle (7) is connected to the control rod (8) via the bubble trap (14) and several radial fingers d '' spacing (16). 9. Dispositif selon la revendication 7, caractérisé en ce que la tige de commande (8) de la buse tubulaire (7) se prolonge vers le haut et pénètre dans le réservoir (21) du produit à conditionner (P).9. Device according to claim 7, characterized in that the control rod (8) of the tubular nozzle (7) extends upwards and enters the reservoir (21) of the product to be packaged (P). 10. Dispositif selon la revendication 1, caractérisé en ce que le piston (2) du doseur comporte une tige de commande (6) qui se prolonge vers le haut et pénètre dans le réservoir (21) du produit à conditionner (P).10. Device according to claim 1, characterized in that the piston (2) of the metering device comprises a control rod (6) which extends upwards and enters the reservoir (21) of the product to be packaged (P). 11. Dispositif selon la revendication 1, caractérisé en ce que la buse tubulaire (7) et le piston (2) sont actionnés par des tiges coaxiales de commande (8, 6) centrées sur l'axe (20) des chambres superposées de dosage et de distribution (1 et 24), le piston (2) étant de forme annulaire et percé d'une ouverture centrale ajustée pour le passage étanche de la tige de commande (8) de la buse (7).11. Device according to claim 1, characterized in that the tubular nozzle (7) and the piston (2) are actuated by coaxial control rods (8, 6) centered on the axis (20) of the superposed metering chambers and distribution (1 and 24), the piston (2) being of annular shape and pierced with a central opening adjusted for the sealed passage of the control rod (8) of the nozzle (7). 12. Dispositif selon la revendication 1, caractérisé en ce que la soupape d'admission (5) est constituée par une soupape à tiroir (29, 30, 32, 33).12. Device according to claim 1, characterized in that the intake valve (5) is constituted by a slide valve (29, 30, 32, 33). 13. Dispositif selon la revendication 1, caractérisé en ce que la soupape d'admission (5) est disposée au fond du réservoir (21) au-dessus d'un orifice de sortie (31) raccordé à l'extrémité supérieure d'une canalisation de liaison (4) entre le réservoir (21) et l'enceinte (25).13. Device according to claim 1, characterized in that the inlet valve (5) is arranged at the bottom of the tank (21) above an outlet orifice (31) connected to the upper end of a connecting pipe (4) between the tank (21) and the enclosure (25). 14. Dispositif selon la revendication 1, caractérisé en ce que le réservoir (21) est surmonté d'une chambre de sas (42) traversée de façon étanche par des tiges d'actionnement qui pénètrent de façon étanche dans l'espace libre supérieur (38) du réservoir (21) où l'une (40) est raccordée à l'extrémité supérieure d'une tige de commande (6) du piston (2) et l'autre (41) est raccordée à l'extrémité supérieure d'une tige de commande (8) de la buse tubulaire (7), la chambre de sas (42) et l'espace libre (38) du réservoir (21) étant alimentés en air stérile.14. Device according to claim 1, characterized in that the reservoir (21) is surmounted by an airlock chamber (42) crossed in a sealed manner by actuating rods which penetrate in a sealed manner into the upper free space (38) of the reservoir (21) where the one (40) is connected to the upper end of a control rod (6) of the piston (2) and the other (41) is connected to the upper end of a control rod (8) of the tubular nozzle (7), the airlock chamber (42) and the free space (38) of the reservoir (21) being supplied with sterile air. 15. Dispositif selon la revendication 1, caractérisé en ce que dans la face inférieure du piston (2) est creusée une cavité (34) en forme de cuvette et que le piège à bulles (14) de la buse (7) offre une face supérieure ayant une forme conjuguée de celle de la surface de ladite cavité (34) du piston (2) et venant s'appliquer exactement contre celle-ci lorsque la buse (7) est en position haute et le piston (2) en position basse.15. Device according to claim 1, characterized in that in the lower face of the piston (2) is hollowed out a cavity (34) in the form of a bowl and that the bubble trap (14) of the nozzle (7) offers a face upper having a shape conjugate with that of the surface of said cavity (34) of the piston (2) and coming to apply exactly against it when the nozzle (7) is in the high position and the piston (2) in the low position . 16. Dispositif selon la revendication 15, caractérisé en ce que la surface de la cavité (34) et les faces du piège à bulles (14) ont une forme sensiblement tronconique.16. Device according to claim 15, characterized in that the surface of the cavity (34) and the faces of the bubble trap (14) have a substantially frustoconical shape. 17. Dispositif de dosage et de distribution pour le conditionnement de produits liquides, en particulier de produits alimentaires, dans des pots ou récipients analogues, caractérisé en ce qu'il comporte une batterie de plusieurs doseurs à buse de distribution mobile conformes à l'une quelconque des revendications 1 à 16.17. Metering and distribution device for packaging liquid products, in particular food products, in pots or similar containers, characterized in that it comprises a battery of several dispensers with mobile dispensing nozzle conforming to one any of claims 1 to 16.
EP87401269A 1986-06-05 1987-06-05 Dosage and distribution apparatus for packaging liquid products Expired - Lifetime EP0248739B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8608138 1986-06-05
FR8608138A FR2599711B1 (en) 1986-06-05 1986-06-05 DOSING AND DISTRIBUTION DEVICE FOR PACKAGING LIQUID PRODUCTS

Publications (2)

Publication Number Publication Date
EP0248739A1 true EP0248739A1 (en) 1987-12-09
EP0248739B1 EP0248739B1 (en) 1990-10-17

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Application Number Title Priority Date Filing Date
EP87401269A Expired - Lifetime EP0248739B1 (en) 1986-06-05 1987-06-05 Dosage and distribution apparatus for packaging liquid products

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US (1) US4798235A (en)
EP (1) EP0248739B1 (en)
JP (1) JPH0794998B2 (en)
AU (1) AU596188B2 (en)
CA (1) CA1287334C (en)
DE (1) DE3765580D1 (en)
ES (1) ES2019952B3 (en)
FR (1) FR2599711B1 (en)

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US4821927A (en) * 1984-04-04 1989-04-18 Spraying Systems Co. Liquid dispensing gun
DE3837097A1 (en) * 1988-11-01 1990-05-03 Profor Ab METHOD FOR VENTILATING A FILLING SYSTEM AND DEVICE FOR CARRYING OUT SUCH A METHOD
FR2639321B1 (en) * 1988-11-18 1991-02-22 Torterotot Roland METHOD AND DEVICE FOR STERILIZING A PACKAGING PLANT FOR FOOD OR PHARMACEUTICAL PRODUCTS
EP1476059A1 (en) * 2002-02-20 2004-11-17 Vallid Limited Dispensing machine
DE202006019136U1 (en) * 2006-12-18 2008-02-14 Krones Ag Apparatus for treating open vessels
ITTV20090218A1 (en) * 2009-11-11 2011-05-12 Galdino Candiotto ASEPTIC VOLUMETRIC DOSING SYSTEM
US11014696B2 (en) * 2017-07-12 2021-05-25 Vanrx Pharmasystems Inc. Purgeable pharmaceutical fill needle
DE102013109969A1 (en) * 2013-09-11 2015-03-12 Krones Ag Device for dosing a filling product in a container to be filled
US11718427B1 (en) * 2022-05-01 2023-08-08 Vital Manufacturing Inc. Volumetric isobaric filling system

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US3841363A (en) * 1971-12-30 1974-10-15 Rostgo Int Corp Container filling machine
DE2711208A1 (en) * 1977-03-15 1978-09-21 Siegfried Ammann Viscous material metering equipment - generates vacuum in dispensing chamber to compress material before driving out
DE3024489A1 (en) * 1980-06-28 1982-01-21 Josef 4422 Ahaus Finnah Liq. materials filling device - includes storage container and dispenser with outlet and piston with automatic non-return valve

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US3841363A (en) * 1971-12-30 1974-10-15 Rostgo Int Corp Container filling machine
FR2179188A1 (en) * 1972-04-05 1973-11-16 Mather & Platt Ltd
DE2711208A1 (en) * 1977-03-15 1978-09-21 Siegfried Ammann Viscous material metering equipment - generates vacuum in dispensing chamber to compress material before driving out
DE3024489A1 (en) * 1980-06-28 1982-01-21 Josef 4422 Ahaus Finnah Liq. materials filling device - includes storage container and dispenser with outlet and piston with automatic non-return valve

Also Published As

Publication number Publication date
US4798235A (en) 1989-01-17
DE3765580D1 (en) 1990-11-22
JPS6388405A (en) 1988-04-19
FR2599711A1 (en) 1987-12-11
AU7400887A (en) 1987-12-10
EP0248739B1 (en) 1990-10-17
FR2599711B1 (en) 1988-09-23
AU596188B2 (en) 1990-04-26
CA1287334C (en) 1991-08-06
ES2019952B3 (en) 1991-07-16
JPH0794998B2 (en) 1995-10-11

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