EP1444133B1 - Device for dispensing a liquid or pasty product - Google Patents

Device for dispensing a liquid or pasty product Download PDF

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Publication number
EP1444133B1
EP1444133B1 EP02793240A EP02793240A EP1444133B1 EP 1444133 B1 EP1444133 B1 EP 1444133B1 EP 02793240 A EP02793240 A EP 02793240A EP 02793240 A EP02793240 A EP 02793240A EP 1444133 B1 EP1444133 B1 EP 1444133B1
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EP
European Patent Office
Prior art keywords
piston
product
plate
outlet
fact
Prior art date
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Expired - Lifetime
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EP02793240A
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German (de)
French (fr)
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EP1444133A1 (en
Inventor
Dominique Schwab
Timothy Cooper
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Erca Formseal SA
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Erca Formseal SA
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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
    • B65B3/326—Methods or devices for controlling the quantity of the material fed or filled by volumetric measurement by pistons co-operating with measuring chambers for dosing several products to be mixed

Definitions

  • the present invention relates to a device for dispensing a product liquid or pasty, comprising a feed chamber having an inlet of product, a product outlet and means for repressing timed volumes of product through said output.
  • a device of this type is for example known by the request of French Patent No. 2,657,430. It serves to deliver specific quantities of produced, clockwise, in containers. In particular, it is connected to a container filling system, on which the containers are advanced step by step, to park under a filling station in which specific quantities of product are delivered in the containers.
  • the product is initially stored in a pressure tank, which is connected the product inlet of the feed chamber.
  • the exit of this room is itself connected to a product transport line, which conveys the metered quantities of product to the filling station of containers.
  • the installation in which this station is located may be a filling plant for containers, and used to fill containers prefabricated. It can also be used to make containers in one or several manufacturing stations, in particular by thermoforming, and to fill these receptacles in a filling station located downstream from manufacturing.
  • facilities known include a first distribution device connected to a first product tank, and a second dispensing device analogue connected to a second tank. One or the other of these devices to feed one or the other of the products in the line of transport.
  • the object of the invention is to improve this state of the art by proposing a dispensing device that allows dosing and dispensing at least two products, independently of one another.
  • the device of the invention comprises a second feed chamber also having a product inlet, a product outlet and means for repressing determined volumes of product through this output and the fact that it comprises a distribution outlet and selection means capable of making selectively communicate the product output from one of the rooms with said distribution output by isolating from this distribution output the output of product of the other room.
  • the device of the invention comprises two chambers similar power supplies, each having an output.
  • the outputs of both rooms are connected to the outlet of distribution.
  • Room entrances can be respectively connected to a first and a second reservoir containing two different products.
  • To change the product repressed by the distribution outlet it is therefore necessary to control the selection means to connect the output of one or the other chamber to the distribution outlet.
  • the means for repressing timed manner of determined product volumes include a metering cylinder forming a region of the chamber adjacent to the outlet of produced, a metering piston movable back and forth in said cylinder, at least a product inlet opening formed in said piston and an organ shutter capable of releasing or closing said intake opening.
  • the metering roll of each chamber is arranged in a lower area of this room, close to its exit. So, the entrance to the chamber, which is connected to a tank, is arranged above the cylinder.
  • the cylinder is filled with product contained in the chamber when the piston back into said cylinder, the intake opening being open to allow the passage of the product.
  • the piston has moved enough to determine, in the cylinder, the volume of metered product to be pushed back by the exit of the room, one closes the opening of admission and one moves the piston down so that it pushes the product contained in the cylinder.
  • the admission opening is located at center of the piston, and can be closed by a movable valve vertically relative to the piston, whose stroke is also vertical.
  • the shutter member is a bushel, able to be moved with the metering piston in the back and forth movement of the latter and be turned relative to him to release or close said opening intake.
  • the shutter member formed by a bushel is interesting, in the as its movement relative to the piston is tacit to control.
  • the rotation of the bushel can be precisely controlled, and the fact that the the bushel does not move in the same direction as the displacement of the piston facilitates the realization and control of the device.
  • the device comprises a mobile stage, means for moving said platen back and forth and clutch means to selectively make the piston of the first feed chamber or the piston of the second feed chamber secured to the displacement of platinum.
  • the means for controlling the movement of pistons are not specific to each piston, but they actually control the platinum and, depending on whether we want to repress by the exit of distribution of one or the other of the products, one engages one or the other pistons on this turntable. This results in substantial savings, both for the manufacture only for the maintenance of the device, compared to a situation which would use two similar control devices (each for example of the type described in French Patent Application No. 2,657,430, having pistons ordered separately).
  • the device according to the invention is more compact, lighter and easier to order.
  • the volume of dosed product must be controlled with precision so that the feeding is done in good conditions in the feed station of the containers.
  • the means of Piston movement control are important elements of this kind of device.
  • the platen has a first and a second passage in which respectively the piston rod of the first feeding chamber and the piston rod of the second chamber feed, a first clutch means adapted to be moved relative to platinum between a disengaged position in which it authorizes a relative sliding between the plate and the piston of the first chamber and a engaged position in which it prevents this sliding, as well as a second clutch means adapted to be moved relative to the platen between a disengaged position in which it allows relative sliding between the plate and the piston of the second chamber and an engaged position in which it prevents this sliding.
  • the device of the invention may comprise control means, or means of safety preventing the platen from moving when both pistons are engaged (cutting, for example, the power supply of the means for moving the plate).
  • the system of FIG. 1 serves to bring the product, for example a liquid or pasty product, such as yogurt or the like, to a station in which this product is delivered in containers 12 which are brought under this station.
  • the product. delivered in station 10 results from the mixing of several products.
  • This mixture comprises a basic product or white mass, initially contained in the tank R, as well as an additive from a tank RA or RB and mixed with the white mass in a mixer 14, before being injected into the dosing station.
  • the white mass may be yoghurt nature, while the additives contained in the RA or RB tank may be fruit extracts from two different species.
  • the product contained in the tank RA or RB is conveyed, according to determined doses and so in a LT transmission line, which brings this product to mixer 14 in which it is mixed with the white mass from the reservoir R.
  • the output of distribution 18 may be placed in communication with one or the other products contained in the tank RA or RB.
  • the injection system is of the type described in the French patent application No. 01 13850 filed October 26, 2001.
  • the system includes an introductory post 20 which allows to introduce into this line a separator organ such as a shuttle that moves in the transport line under the effect of the thrust of the product introduced after him.
  • the system includes a evacuation station 22 which allows to evacuate this separator member. So, on the entire length of the LT transmission line located between items 20 and 22, the separator inserted in this line at item 20 and removed from that line at station 22, allows the products to be separated from one another respectively located downstream and upstream of this organ.
  • the selection means 24 of the device 16 By acting on the selection means 24 of the device 16, it is possible to connect the line LT input to either the RA or RB tanks.
  • a separator in line LT by the introductory station 20, so that it separates one on the other, the products initially contained in each of the two tanks.
  • This system also includes a return line LR, which allows the body separator extracted from line LT in item 22, to return to the post 20.
  • a product such as water may be introduced in the return line LR to push the separating member in this line.
  • the system advantageously comprises a washing station 26, which allows to wash the separator before its introduction in the post of introduction 20.
  • the device distribution 16 includes two feed chambers, respectively 30A and 30B, each having an input, EA and EB respectively, these inputs being respectively connected to tanks RA and RB.
  • the means of selection 24 selectively connect the output SA of the chamber 30A or the output SB of the chamber 30B to the dispensing outlet 18 of the device 16. of these two chambers which is not connected to the distribution outlet 18 is connected to a purge duct 19 equipped with a purge valve 19 '.
  • rooms 30A and 30B each comprise a metering roll, respectively 32A and 32B, these cylinders being located in the lower part of the chambers 30A and 30B.
  • a metering piston respectively 34A and 34B, is mobile in the dosing cylinder. It was indicated by line circles interrupted the position of EA and EB product inputs in rooms 30A and 30B, although these inputs are not in the plane of the figure. These entrances are at the top of the rooms, and these are filled with product from pressure vessels, respectively RA and RB.
  • the SA output of chamber 30A or the SB output of chamber 30B can be connected, by a selector 24, either to the distribution outlet 18, or to a purge pipe 19.
  • the selector 24 is a rotary selector capable of occupying a first position, visible in FIGS. 1 and 2, in which it is communicate the SB output of chamber 30B with the distribution output 18 and the SA output of the chamber 30A with the purge duct 19, and a second position in which the situation is the reverse, the exit SA from the chamber 30A communicating with the distribution outlet 18 and the output SB of the chamber 30B communicating with the conduit 19.
  • the pistons 34A and 34B each have at least one opening In this case, they each have two openings, respectively 38A, 38'A and 38B, 38'B.
  • a shutter member for each piston, a shutter member, respectively 40A and 40B, is able to close or release the intake openings. More precisely, in the example shown, the shutter members are constituted by rotary bushings, arranged in the pistons and able to rotate relative their.
  • the bushels each comprise at least one intake passage, respectively 42A for 40A and 42B for 40B plug.
  • FIG. 2 shows the plug 40A in its position in which it releases the inlet openings 38A, 38'A of the piston 34A, the passage 42A being arranged in register with these openings.
  • the bushel 40B is disposed in its closed position of the inlet openings 38B, 38'B, and we see that its solid outer surface is located opposite these openings.
  • the bushels are of frustoconical type, each piston, respectively 34A, 34B, having a conical cavity in which find the bushel.
  • the inner periphery of this cavity and the periphery bushel respectively form a first and a second contact surface, which are designated by the references 44A and 44'A for the piston-plug assembly 34A, 40A, the contact surfaces of the assembly piston-plug 34B, 40B is however not referenced.
  • the plug and the piston can occupy one with respect to the other a working position, in which these contact surfaces are in contact substantially watertight, and a washing position in which they are apart.
  • the bushel 40A has been moved relative to the piston 34A so as to spread the contact surfaces 44A and 44'A.
  • the plug 40B occupies, relative to the piston 34B, its position of job.
  • the piston 34A is outside its dosing cylinder, which is related to the fact that it is in washing situation and not in work situation.
  • FIG. 2 shows the piston-plug assembly 34B, 40B at the end of race, in which a metered quantity of product has been repressed by the exit SB.
  • the piston is then moved to up until it reaches a defined position so that the volume of product delimited between the high and low positions of the piston corresponding to the volume of dosed product to be reprocessed each cycle of displacement of the piston.
  • the high position or the low position of the piston can be adjusted by appropriate means to define the volume of product to be repressed. In this high position, we close the intake openings 38B, 38'B by rotating the bushel 40B and moves the piston 34B downward to push back the product contained therein in the cylinder 32B.
  • the device 16 comprises a shutter 46, disposed downstream of the distribution means 24 or part of said means, and allowing to clock off the dispensing outlet 18.
  • this exit is opened when the piston of one of the chambers is moved to the down to repress in front of him a metered amount of product but it is closed when this piston has reached its low position, to ensure that, when the piston rises with its open intake openings, a depression is created in the cylinder of this piston.
  • the shutter 46 is arranged in the duct forming the dispensing outlet 18 and is formed by a two-position rotary plug.
  • the pistons are carried by rods, respectively 35A and 35B, which extend into the dosing chambers 30A and 30B, respectively. They do body with these rods or are attached to them by any suitable means.
  • protective means such as bellows 48A, 48B are arranged around these rods by being fixed at the top to the wall of the bedrooms. The interior space delimited between the bellows and the piston rods is vented to ambient air by unrepresented communication lines in Figure 2.
  • rods of the pistons are hollow and rods of control bushel respectively 41A and 41B extend inside of these stems.
  • the cavity of the 41A, 41B has an inlet located at a end of the rod outside the piston and a communication located at the opposite end. More specifically, in the example shown, the input of the cavity of each plug stem is formed by a connection, respectively 56'A, 56'B, formed in the coupling head, respectively 56A, 56B.
  • the communication is formed by a or several holes 57A and 57B, respectively, communicating the cavity of the bushel rod with the outer periphery of the latter.
  • the piston rod respectively 35A, 35B, has a orifice, respectively 57'A, 57'B which is located outside the chamber Power.
  • a barrier fluid such as sterile air can be injected by 56'B input in the plug stem, come out through communication 57B for circulate in the annular space between the outer periphery of the stem of the plug and the inner periphery of the piston rod, and come out of this annular space through the orifice 57'B. This avoids the accumulation of bacteria in the plug shafts and piston, and between them.
  • the communication 57A opens in the feed chamber due to the spacing of the contact surfaces 44A, 44'A.
  • a cleaning solution can be injected through the inlet 56'A and through the orifice 57'A and this solution flows down, through communication 57A and through space arranged between the piston and the bushel. It can then be evacuated by the purge pipe 19.
  • the bushels are controlled by the distal ends of their stems, located outside rooms 30A and 30B.
  • the control means can for example be rotary pneumatic cylinders.
  • the end of the rod 41B of the plug 40B has a radial projection 41'B, which is disposed in the chamber of a rotary cylinder 50B.
  • the rotation of the bushel is ordered in one direction or in the opposite direction.
  • a cylinder 50A of the same type control meanwhile, the rotation of the bushel 40A.
  • jacks are carried by supports, respectively 52A and 52B, themselves carried by the distal ends of the piston rods, respectively 35A and 35B.
  • each bushel is constantly recalled in its working position with respect to piston, in which the contact surfaces mentioned above are in substantially sealed contact.
  • these springs are supported on the one hand on a fixed part of the cylinders 50A, 50B mentioned above, and on a connecting head, respectively 56A, 56B screwed onto the rods of bushels.
  • displacement cylinders in translation are also carried by the supports 52A, 52B.
  • the head 59A of the jack 58A urges the displacement of the rod 41A of the plug 40A towards the low relative to the piston 38A.
  • the cylinder head presses on the head of connection 56A.
  • the cylinder 58B is not fed with fluid under pressure and its head 59B remains at a distance from the connector head 56B.
  • the displacement of the pistons is guided by guide plates, respectively an upper guide plate 60 and a plate of lower guide 62. These plates have through passages equipped with guide bearings 64 with which the rods of the pistons.
  • the feed chambers 30A and 30B have their upper ends formed in a body 31 which is attached to the plate lower guide 62.
  • the plates 60 and 62 are fixed, they are for example secured to each other by fixing and bracing means 66.
  • the device comprises a movable plate 68 which can move in back and forth between these plates.
  • the extreme high and low positions of the platinum are determined by high and low safety stops, respectively 70 and 72 respectively integral plates 60 and 62.
  • II may be cells detecting the platinum position and stopping the power of the control means of the displacement of this plate when it reaches a given level with respect to said cells, or other stop means, for example contacts or simple stops.
  • the pistons, which determine the volumes of product dosed in the feeding rooms are regulated by acting on the control means for driving the platen.
  • the plate is moved vertically by a worm system.
  • the platinum bears two ball bearings, respectively 74A, 74B, which are fixed with respect to this platinum.
  • Screw rods, respectively 76A, 76B cooperate with these pads.
  • These screw rods define helical tracks for the balls pads, so that the synchronized rotation of the screws moves in consequence in translation platinum 68.
  • the screws are driven in rotation by pulleys, respectively 78A, 78B, which they carry respectively. These pulleys are themselves rotated by a belt system 80.
  • a actuator 81 rotates a driving pulley 82, which cooperates with the belt 80 for the latter drives driven pulleys 78A and 78B.
  • the pulleys 82, 78A, 78B may be arranged in a triangle, substantially to form the vertices of an equilateral triangle. This allows to balance the forces exerted on the belt 80. It can be a only belt arranged to form back and forth between the pulleys, or two belts respectively connected to pulleys 82 and 78A and to pulleys 82 and 78B.
  • An initiatization detector 81 makes it possible to know the initialization position of the servomotor 81.
  • Figure 4 is a section in the plane of the plate 68 (perpendicular to the direction of movement of the pistons) and allows therefore to better understand the operation of the clutch means of the pistons on this board.
  • Platinum 68 has first and second passage, 84A, 84B, respectively, through which the rods of piston, respectively 35A, 35B. In these passages, are placed pads, respectively 86A, 86B, which limit the friction forces.
  • the clutch means are adapted to retain the piston rods in these passages or, conversely, to let the plate slide freely in relation to these stems.
  • the first clutch means comprises at least a first pin integral with the movement back and forth of the plate and able to be moved relative to the latter between a disengaged position and an engaged position in which it cooperates with the piston rod of the first chamber to hold this rod relative to the platen
  • the second clutch means comprises at least a second spindle, integral with the movement back and forth of the plate and able to be moved by relative to the latter between a disengaged position and an engaged position in which it cooperates with the piston rod of the second chamber to hold this rod in relation to the plate.
  • the first clutch means comprises two pins, respectively 87A and 88A
  • same as the second clutch means comprises two pins, respectively 87B and 88B.
  • the stage includes passages for these pins, formed by bores, respectively 89A and 90A for the pins 87A and 88A, and 89B and 90B for the pins 87B, 88B.
  • the pins are movable in translation in these bores.
  • the piston rods each have grooves 91A and 91A respectively. 92A for the rod 35A, and 91B and 92B for the rod 35B.
  • these grooves are parallel.
  • the piston rod 35A 34A is disengaged, and we see that the grooves 91A, 92A are not placed in register with the bores 89A, 90A, which are partially obscured by the outer periphery of the piston rod.
  • the rod 35B of the piston 34B is engaged, the grooves 91B, 92B being placed in the bores 89B, 90B, so that the pins can be introduced into said bores.
  • the pins cooperate with the grooves of the outer periphery of the stem of this piston, to lock the latter relative to the plate.
  • the two pins are arranged in fork to parallel branches and the two piston grooves are diametrically opposed.
  • the sets of pins respectively 87A, 88A and 87B, 88B are ordered separately, each being individually cylinder of their own, respectively 94A and 94B.
  • This is for example of pneumatic cylinders whose moving part directly carries the sets of brooch.
  • position detection means respectively 95A, 95B are associated with each of the two cylinders for instantaneously, whether the corresponding piston is engaged or no.
  • the cylinders are integral with the plate 68, and are worn by it during his displacement.
  • Cylinders and position sensors are shown in Figure 3 for clarity, although they are not normally visible on the chopped off.
  • Means are provided so that when a piston is disengaged from the platinum, move this piston relative to said platen.
  • the Piston positioning means regardless of the platinum are formed by cylinders, respectively 96A for the piston 34A and 96B for the piston 34B. These jacks are not visible in the plane of FIG. 2, but they are in FIGS. 5 and 6. These jacks are carried by the guide plate 60, and their moving parts cooperate with the supports of the pistons respectively 52A and 52B.
  • each of the cylinders 96A and 96B may comprise two elementary cylinders 96'A and 96'A respectively and 96'B and 96 "B respectively to urge the piston to move towards the up and down.
  • the cylinder corresponding 96A or 96B is disabled, so that the piston can slide freely in relation to him.
  • we can activate the corresponding cylinder to maintain its position and to place it in the desired position in order to be able to re-engage.
  • the outputs SA and SB of FIGS. chambers 30A and 30B, as well as the distribution outlet 18, are formed in a body 100.
  • a body 100 This is for example a room, having cells, respectively 100A and 100B which respectively form the portions lower of the metering cylinders 32A and 338, this part being fixed to a central body 102, in which the central regions of the bedrooms.
  • the body 100 has a first channel 104A which connects the output SA of the chamber 30A at the distribution outlet 18 and a second channel 104B that connects SB output from room 30B to exit 18. These channels are also connected to the purge duct 19 and the rotary selector 24 is arranged to the intersection of the channels 104A, 104B with the dispensing outlet 18 and the bleed pipe 19.
  • the selector 24 selectively isolates one or other of the 104A and 104B channels of the output 18. It then connects the isolated channel to the conduit purge 19.
  • the selector 24 is controlled between its two positions by a jack rotary 106 and the shutter 46 is controlled between its open positions and closed by a rotary jack 108, synchronized with the displacement of the piston active and his bushel.
  • the selector 24 and the shutter 46 are in the form of bushels, recalled against their respective seats, 24 'and 46' by jacks 106 ', 108' and able to be removed from these seats by command of the same cylinders.
  • these bushels and the different 100 body ducts can be washed by circulating a solution of washing.
  • bushels 24 and 46 are away from their seats and the washing solution can also be injected through product entries EA, EB.
  • the space E24 formed at the back of the bushel 24 and isolated from the rooms 30A and 30B when this bushel is in abutment against its seat, can also be used for cleaning, thanks to 24'A and 24'B (only sketches) used respectively for the feeding and evacuation of a washing solution.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Fats And Perfumes (AREA)
  • Jellies, Jams, And Syrups (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

The invention concerns a device comprising two feeding chambers (30A, 30B), including each a product intake (EA, EB), a product outlet (SA, SB) and means 34A, 40A, 34B, 40B) for synchronized delivery of specific volumes of product through said outlet. The device comprises a dispensing outlet (18) and selection means (24) for selectively communicating the product outlet (SA, SB) of one of the chambers with said dispensing outlet by isolating therefrom the product outlet of the other chamber.

Description

La présente invention concerne un dispositif de distribution d'un produit liquide ou pâteux, comprenant une chambre d'alimentation ayant une entrée de produit, une sortie de produit et des moyens pour refouler de manière cadencée des volumes déterminés de produit à travers ladite sortie.The present invention relates to a device for dispensing a product liquid or pasty, comprising a feed chamber having an inlet of product, a product outlet and means for repressing timed volumes of product through said output.

Un dispositif de ce type est par exemple connu par la demande de brevet français n° 2 657 430. Il sert à délivrer des quantités déterminées de produit, de manière cadencée, dans des récipients. En particulier, il est relié à une installation de remplissage de récipients, sur laquelle les récipients sont avancés en pas à pas, pour stationner sous une station de remplissage dans laquelle des quantités déterminées de produit sont délivrées dans les récipients.A device of this type is for example known by the request of French Patent No. 2,657,430. It serves to deliver specific quantities of produced, clockwise, in containers. In particular, it is connected to a container filling system, on which the containers are advanced step by step, to park under a filling station in which specific quantities of product are delivered in the containers.

Le produit est initialement stocké dans un réservoir sous pression, auquel est reliée l'entrée de produit de la chambre d'alimentation. La sortie de cette chambre est elle-même reliée à une ligne de transport de produit, qui convoie les quantités dosées de produit jusqu'à la station de remplissage des récipients.The product is initially stored in a pressure tank, which is connected the product inlet of the feed chamber. The exit of this room is itself connected to a product transport line, which conveys the metered quantities of product to the filling station of containers.

L'installation dans laquelle se trouve cette station peut être une installation de remplissage des récipients, et servir à remplir des récipients préfabriqués. Elle peut également servir à fabriquer des récipients dans une ou plusieurs stations de fabrication, en particulier par thermoformage, et à remplir ces récipients dans une station de remplissage située en aval des stations de fabrication.The installation in which this station is located may be a filling plant for containers, and used to fill containers prefabricated. It can also be used to make containers in one or several manufacturing stations, in particular by thermoforming, and to fill these receptacles in a filling station located downstream from manufacturing.

On peut souhaiter, avec une même installation, remplir un certain nombre de récipients avec un premier produit, puis remplir d'autres récipients avec un autre produit. En particulier, lorsque les récipients sont destinés à contenir un produit liquide ou pâteux du genre yaourt, il est assez fréquent qu'il soit nécessaire de changer le parfum du yaourt. Dans un tel cas, la plupart du temps, un réservoir principal contenant le produit de base, dénommé masse blanche, est raccordé à la station de remplissage de manière adaptée. Selon le parfum choisi, un produit additif est amené par la ligne de transport de manière à être mélangé avec la masse blanche dans la station de remplissage ou juste en amont de cette dernière, avant que le mélange soit introduit dans les récipients. Pour changer de parfum, on conserve la même masse blanche, mais on modifie l'additif.One can wish, with the same installation, to fill a certain number of containers with a first product, then fill other containers with another product. In particular, when the containers are intended for contain a liquid or pasty product like yoghurt, it is quite common that it is necessary to change the scent of yogurt. In such a case, the most of the time, a main tank containing the basic product, denominated white mass, is connected to the filling station so adapted. Depending on the perfume chosen, an additive product is brought by the line of transport so as to be mixed with the white mass in the station of filling or just upstream of the latter, before the mixture is introduced into the containers. To change the fragrance, keep the same white mass, but the additive is modified.

Pour permettre de tels changements de produit, des installations connues comprennent un premier dispositif de distribution raccordé à un premier réservoir de produit, et un deuxième dispositif de distribution analogue raccordé à un deuxième réservoir. On fait fonctionner l'un ou l'autre de ces dispositifs pour alimenter l'un ou l'autre des produits dans la ligne de transport.To enable such product changes, facilities known include a first distribution device connected to a first product tank, and a second dispensing device analogue connected to a second tank. One or the other of these devices to feed one or the other of the products in the line of transport.

De telles installations présentent l'inconvénient de ne pas être compactes, et de nécessiter la mise en place et le fonctionnement de deux dispositifs de distribution distincts.Such installations have the disadvantage of not being compact, and require the establishment and operation of two separate dispensing devices.

L'invention a pour but d'améliorer cet état de la technique, en proposant un dispositif de distribution qui permette de doser et de distribuer au moins deux produits, indépendamment l'un de l'autre.The object of the invention is to improve this state of the art by proposing a dispensing device that allows dosing and dispensing at least two products, independently of one another.

Ce but est atteint grâce au fait que le dispositif de l'invention comprend une deuxième chambre d'alimentation ayant également une entrée de produit, une sortie de produit et des moyens pour refouler de manière cadencée des volumes déterminés de produit à travers cette sortie et au fait qu'il comporte une sortie de distribution et des moyens de sélection aptes à faire sélectivement communiquer la sortie de produit de l'une des chambres avec ladite sortie de distribution en isolant de cette sortie de distribution la sortie de produit de l'autre chambre.This goal is achieved thanks to the fact that the device of the invention comprises a second feed chamber also having a product inlet, a product outlet and means for repressing determined volumes of product through this output and the fact that it comprises a distribution outlet and selection means capable of making selectively communicate the product output from one of the rooms with said distribution output by isolating from this distribution output the output of product of the other room.

Ainsi, le dispositif de l'invention comprend deux chambres d'alimentation analogues, ayant chacune une sortie. Les sorties des deux chambres sont reliées à la sortie de distribution. Les entrées des chambres peuvent être respectivement reliées à un premier et à un deuxième réservoir contenant deux produits différents. Pour changer le produit refoulé par la sortie de distribution, il convient donc de commander les moyens de sélection pour relier la sortie de l'une ou de l'autre chambre à la sortie de distribution.Thus, the device of the invention comprises two chambers similar power supplies, each having an output. The outputs of both rooms are connected to the outlet of distribution. Room entrances can be respectively connected to a first and a second reservoir containing two different products. To change the product repressed by the distribution outlet, it is therefore necessary to control the selection means to connect the output of one or the other chamber to the distribution outlet.

Avantageusement, pour chaque chambre, les moyens pour refouler de manière cadencée des volumes déterminés de produit comprennent un cylindre de dosage formant une région de la chambre voisine de la sortie de produit, un piston doseur mobile en va-et-vient dans ledit cylindre, au moins une ouverture d'admission de produit formée dans ledit piston et un organe obturateur apte à libérer ou à obturer ladite ouverture d'admission.Advantageously, for each room, the means for repressing timed manner of determined product volumes include a metering cylinder forming a region of the chamber adjacent to the outlet of produced, a metering piston movable back and forth in said cylinder, at least a product inlet opening formed in said piston and an organ shutter capable of releasing or closing said intake opening.

Généralement, le cylindre de dosage de chaque chambre est disposé dans une région inférieure de cette chambre, proche de sa sortie. Ainsi, l'entrée de la chambre, qui est reliée à un réservoir, est disposée au-dessus du cylindre. Le cylindre est rempli en produit contenu dans la chambre lorsque le piston remonte dans ledit cylindre, l'ouverture d'admission étant ouverte pour permettre le passage du produit. Lorsque le piston s'est suffisamment déplacé pour déterminer, dans le cylindre, le volume de produit dosé devant être refoulé par la sortie de la chambre, on obture l'ouverture d'admission et l'on déplace le piston vers le bas de telle sorte qu'il refoule devant lui le produit contenu dans le cylindre.Generally, the metering roll of each chamber is arranged in a lower area of this room, close to its exit. So, the entrance to the chamber, which is connected to a tank, is arranged above the cylinder. The cylinder is filled with product contained in the chamber when the piston back into said cylinder, the intake opening being open to allow the passage of the product. When the piston has moved enough to determine, in the cylinder, the volume of metered product to be pushed back by the exit of the room, one closes the opening of admission and one moves the piston down so that it pushes the product contained in the cylinder.

Un fonctionnement de ce type est décrit dans la demande de brevet français n° 2 657 430, dont la description est incorporée à la présente demande de brevet.Operation of this type is described in the patent application French Patent No. 2,657,430, the description of which is incorporated herein. patent application.

Dans ce document antérieur, l'ouverture d'admission est située au centre du piston, et peut être obturée par une soupape déplaçable verticalement par rapport au piston, dont la course est également verticale.In this prior document, the admission opening is located at center of the piston, and can be closed by a movable valve vertically relative to the piston, whose stroke is also vertical.

On pourrait choisir d'utiliser un système de ce type dans chaque chambre d'alimentation du dispositif selon la présente invention. Toutefois, avantageusement, l'organe obturateur est un boisseau, apte à être déplacé avec le piston doseur dans le mouvement de va-et-vient de ce dernier et à être tourné par rapport à lui pour libérer ou obturer ladite ouverture d'admission.One could choose to use a system of this type in each supply chamber of the device according to the present invention. However, advantageously, the shutter member is a bushel, able to be moved with the metering piston in the back and forth movement of the latter and be turned relative to him to release or close said opening intake.

L'organe obturateur formé par un boisseau est intéressant, dans la mesure où son déplacement par rapport au piston est tacite à commander. La rotation du boisseau peut être commandée de manière précise, et le fait que le déplacement du boisseau ne s'opère pas dans le même sens que le déplacement du piston facilite la réalisation et la commande du dispositif.The shutter member formed by a bushel is interesting, in the as its movement relative to the piston is tacit to control. The rotation of the bushel can be precisely controlled, and the fact that the the bushel does not move in the same direction as the displacement of the piston facilitates the realization and control of the device.

Avantageusement, le dispositif comprend une platine mobile, des moyens pour déplacer ladite platine en va-et-vient et des moyens d'embrayage pour sélectivement rendre le piston de la première chambre d'alimentation ou le piston de la deuxième chambre d'alimentation solidaire du déplacement de la platine.Advantageously, the device comprises a mobile stage, means for moving said platen back and forth and clutch means to selectively make the piston of the first feed chamber or the piston of the second feed chamber secured to the displacement of platinum.

Avec ces dispositions, les moyens pour commander le déplacement des pistons ne sont pas propres à chaque piston, mais ils commandent en fait le déplacement de la platine et, selon que l'on veut refouler par la sortie de distribution l'un ou l'autre des produits, on embraye l'un ou l'autre des pistons sur cette platine. Il en résulte une économie substantielle, tant pour la fabrication que pour la maintenance du dispositif, par rapport à une situation dans laquelle on utiliserait deux dispositifs de commande analogues (chacun par exemple du type décrit dans la demande de brevet français n° 2 657 430, ayant des pistons commandés séparément).With these provisions, the means for controlling the movement of pistons are not specific to each piston, but they actually control the platinum and, depending on whether we want to repress by the exit of distribution of one or the other of the products, one engages one or the other pistons on this turntable. This results in substantial savings, both for the manufacture only for the maintenance of the device, compared to a situation which would use two similar control devices (each for example of the type described in French Patent Application No. 2,657,430, having pistons ordered separately).

De plus, le dispositif selon l'invention est plus compact, plus léger et plus facile à commander. En effet, le volume de produit dosé doit être contrôlé avec précision pour que l'alimentation se fasse dans de bonnes conditions dans la station d'alimentation des récipients. En conséquence, les moyens de commande du déplacement des pistons constituent des éléments importants de ce genre de dispositif.In addition, the device according to the invention is more compact, lighter and easier to order. In fact, the volume of dosed product must be controlled with precision so that the feeding is done in good conditions in the feed station of the containers. As a result, the means of Piston movement control are important elements of this kind of device.

Ainsi, avantageusement, la platine présente un premier et un deuxième passage dans lesquels passent respectivement la tige du piston de la première chambre d'alimentation et la tige du piston de la deuxième chambre d'alimentation, un premier moyen d'embrayage apte à être déplacé par rapport à la platine entre une position débrayée dans laquelle il autorise un coulissement relatif entre la platine et le piston de la première chambre et une position embrayée dans laquelle il empêche ce coulissement, ainsi qu'un deuxième moyen d'embrayage apte à être déplacé par rapport à la platine entre une position débrayée dans laquelle il autorise un coulissement relatif entre la platine et le piston de la deuxième chambre et une position embrayée dans laquelle il empêche ce coulissement.Thus, advantageously, the platen has a first and a second passage in which respectively the piston rod of the first feeding chamber and the piston rod of the second chamber feed, a first clutch means adapted to be moved relative to platinum between a disengaged position in which it authorizes a relative sliding between the plate and the piston of the first chamber and a engaged position in which it prevents this sliding, as well as a second clutch means adapted to be moved relative to the platen between a disengaged position in which it allows relative sliding between the plate and the piston of the second chamber and an engaged position in which it prevents this sliding.

Lorsqu'un piston est débrayé, sa tige reste en place dans le passage correspondant de la platine, et celle-ci coulisse librement par rapport à cette tige, sans déplacer ce piston. Pour embrayer le piston, il suffit de commander le moyen d'embrayage correspondant, de manière à empêcher ce coulissement et à entraíner ainsi ce piston avec la platine. Il est préférable d'éviter que les deux pistons soient embrayés en même temps ou, au moins, d'éviter de déplacer la platine dans une telle situation. Pour ce faire, le dispositif de l'invention peut comprendre des moyens de contrôle, ou des moyens de sécurité empêchant le déplacement de la platine lorsque les deux pistons sont embrayés (coupant par exemple l'alimentation en énergie des moyens de déplacement de la platine).When a piston is disengaged, its rod remains in place in the passage corresponding to the plate, and this one slides freely with respect to this rod, without moving this piston. To engage the piston, simply order the corresponding clutch means, so as to prevent this sliding and thus drive this piston with the plate. It is preferable prevent both pistons from being engaged at the same time or, at least, avoid moving the turntable in such a situation. To do this, the device of the invention may comprise control means, or means of safety preventing the platen from moving when both pistons are engaged (cutting, for example, the power supply of the means for moving the plate).

L'invention sera bien comprise et ses avantages apparaítront mieux à la lecture de la description détaillée qui suit, d'un mode de réalisation représenté à titre d'exemple non limitatif. La description se réfère aux dessins annexés sur lesquels :

  • la figure 1 est un schéma montrant l'organisation générale d'un système d'injection comprenant un dispositif de distribution conforme à l'invention ;
  • la figure 2 est une vue en coupe verticale d'un dispositif conforme à l'invention ;
  • la figure 3 est une vue en coupe selon la ligne III-III de la figure 2 ;
  • la figure 4 est une vue en coupe selon la ligne IV-IV de la figure 2 ;
  • la figure 5 est une vue de dessus du dispositif de la figure 2 ; et
  • la figure 6 est une vue de devant de la figure 2, c'est-à-dire selon la flèche VI de la figure 3.
The invention will be better understood and its advantages will appear better on reading the detailed description which follows, of an embodiment shown by way of non-limiting example. The description refers to the accompanying drawings in which:
  • Figure 1 is a diagram showing the general organization of an injection system comprising a dispensing device according to the invention;
  • Figure 2 is a vertical sectional view of a device according to the invention;
  • Figure 3 is a sectional view along the line III-III of Figure 2;
  • Figure 4 is a sectional view along the line IV-IV of Figure 2;
  • Figure 5 is a top view of the device of Figure 2; and
  • FIG. 6 is a front view of FIG. 2, that is to say according to arrow VI of FIG. 3.

Le système de la figure 1 sert à amener du produit, par exemple un produit liquide ou pâteux, tel que du yaourt ou analogue, jusqu'à une station de dosage et de remplissage 10 dans laquelle ce produit est délivré dans des récipients 12 qui sont amenés sous cette station. Par exemple, le produit. délivré dans la station 10 résulte du mélange de plusieurs produits. Ce mélange comprend un produit de base ou masse blanche, initialement contenu dans le réservoir R, ainsi qu'un additif provenant d'un réservoir RA ou RB et mélangé à la masse blanche dans un mélangeur 14, avant d'être injecté dans la station de dosage. Par exemple, la masse blanche peut être du yaourt nature, tandis que les additifs contenus dans le réservoir RA ou RB peuvent être des extraits de fruits de deux espèces différentes.The system of FIG. 1 serves to bring the product, for example a liquid or pasty product, such as yogurt or the like, to a station in which this product is delivered in containers 12 which are brought under this station. For example, the product. delivered in station 10 results from the mixing of several products. This mixture comprises a basic product or white mass, initially contained in the tank R, as well as an additive from a tank RA or RB and mixed with the white mass in a mixer 14, before being injected into the dosing station. For example, the white mass may be yoghurt nature, while the additives contained in the RA or RB tank may be fruit extracts from two different species.

A l'aide d'un dispositif de distribution 16, le produit contenu dans le réservoir RA ou RB est acheminé, selon des doses déterminées et de manière cadencée, dans une ligne de transport LT, qui amène ce produit jusqu'au mélangeur 14 dans lequel il est mélangé avec la masse blanche provenant du réservoir R. En effet, grâce au dispositif de distribution 16, la sortie de distribution 18 peut être mise en communication avec l'un ou l'autre des produits contenus dans le réservoir RA ou RB.With the aid of a dispensing device 16, the product contained in the tank RA or RB is conveyed, according to determined doses and so in a LT transmission line, which brings this product to mixer 14 in which it is mixed with the white mass from the reservoir R. Indeed, thanks to the distribution device 16, the output of distribution 18 may be placed in communication with one or the other products contained in the tank RA or RB.

Dans l'exemple représenté, le système d'injection est du type décrit dans la demande de brevet français n° 01 13850 déposée le 26 octobre 2001. Au voisinage de l'entrée de la ligne de transport relié à la sortie de distribution, le système comprend un poste d'introduction 20 qui permet d'introduire dans cette ligne un organe séparateur tel qu'une navette qui se déplace dans la ligne de transport sous l'effet de la poussée du produit introduit après lui. Au voisinage de la sortie S de la ligne de transport LT, le système comprend un poste d'évacuation 22 qui permet d'évacuer cet organe séparateur. Ainsi, sur toute la longueur de la ligne de transport LT située entre les postes 20 et 22, l'organe séparateur inséré dans cette ligne au poste 20 et retiré de ladite ligne au poste 22, permet de séparer l'un de l'autre les produits respectivement situés en aval et en amont de cet organe.In the example shown, the injection system is of the type described in the French patent application No. 01 13850 filed October 26, 2001. In the vicinity of the entrance of the transmission line connected to the distribution outlet, the system includes an introductory post 20 which allows to introduce into this line a separator organ such as a shuttle that moves in the transport line under the effect of the thrust of the product introduced after him. At vicinity of the S output of the LT transmission line, the system includes a evacuation station 22 which allows to evacuate this separator member. So, on the entire length of the LT transmission line located between items 20 and 22, the separator inserted in this line at item 20 and removed from that line at station 22, allows the products to be separated from one another respectively located downstream and upstream of this organ.

En agissant sur les moyens de sélection 24 du dispositif 16, on peut raccorder l'entrée de la ligne LT à l'un ou l'autre des réservoirs RA ou RB. Lorsque l'on passe d'un réservoir à l'autre, on introduit un organe séparateur dans la ligne LT par le poste d'introduction 20, de telle sorte qu'il sépare l'un de l'autre les produits initialement contenus dans chacun des deux réservoirs. Ce système comporte également une ligne de retour LR, qui permet à l'organe séparateur extrait de la ligne LT dans le poste 22, de revenir jusqu'au poste d'introduction 20. Pour cela, un produit tel que de l'eau peut être introduit dans la ligne de retour LR afin de pousser l'organe séparateur dans cette ligne. Sur cette ligne, le système comprend avantageusement un poste de lavage 26, qui permet de laver l'organe séparateur avant son introduction dans le poste d'introduction 20.By acting on the selection means 24 of the device 16, it is possible to connect the line LT input to either the RA or RB tanks. When we go from one tank to another, we introduce a separator in line LT by the introductory station 20, so that it separates one on the other, the products initially contained in each of the two tanks. This system also includes a return line LR, which allows the body separator extracted from line LT in item 22, to return to the post 20. For this purpose, a product such as water may be introduced in the return line LR to push the separating member in this line. On this line, the system advantageously comprises a washing station 26, which allows to wash the separator before its introduction in the post of introduction 20.

Ce système est décrit plus en détail par la demande de brevet français précitée n° 0113850 déposée le 26 octobre 2001, dont l'enseignement est intégralement incorporé à la présente demande de brevet. Le dispositif de distribution 16 comprend deux chambres d'alimentation, respectivement 30A et 30B, ayant chacune une entrée, respectivement EA et EB, ces entrées étant respectivement raccordées aux réservoirs RA et RB. Les moyens de sélection 24 permettent de sélectivement raccorder la sortie SA de la chambre 30A ou la sortie SB de la chambre 30B à la sortie de distribution 18 du dispositif 16. Celle de ces deux chambres qui n'est pas raccordée à la sortie de distribution 18 est reliée à un conduit de purge 19 équipé d'une vanne de purge 19'.This system is described in more detail by the French patent application aforementioned No. 0113850 filed on October 26, 2001, the teaching of which is integrally incorporated in the present patent application. The device distribution 16 includes two feed chambers, respectively 30A and 30B, each having an input, EA and EB respectively, these inputs being respectively connected to tanks RA and RB. The means of selection 24 selectively connect the output SA of the chamber 30A or the output SB of the chamber 30B to the dispensing outlet 18 of the device 16. of these two chambers which is not connected to the distribution outlet 18 is connected to a purge duct 19 equipped with a purge valve 19 '.

En référence à la figure 2, on décrit maintenant plus en détail la conformation des chambres d'alimentation 30A et 30B et les moyens de refoulement des produits qui équipent ces chambres. Ainsi, les chambres 30A et 30B comprennent chacune un cylindre de dosage, respectivement 32A et 32B, ces cylindres étant situés en partie inférieure des chambres 30A et 30B. Pour chaque chambre, un piston doseur, respectivement 34A et 34B, est mobile dans le cylindre de dosage. On a indiqué par des cercles en trait interrompu la position des entrées EA et EB de produit dans les chambres 30A et 30B, bien que ces entrées ne se trouvent pas dans le plan de la figure. Ces entrées sont en partie haute des chambres, et ces dernières sont intégralement remplies de produit provenant des réservoirs sous pression, respectivement RA et RB.With reference to FIG. 2, the following is now described in greater detail: conformation of the feed chambers 30A and 30B and the means of repression of the products that equip these rooms. Thus, rooms 30A and 30B each comprise a metering roll, respectively 32A and 32B, these cylinders being located in the lower part of the chambers 30A and 30B. For each chamber, a metering piston, respectively 34A and 34B, is mobile in the dosing cylinder. It was indicated by line circles interrupted the position of EA and EB product inputs in rooms 30A and 30B, although these inputs are not in the plane of the figure. These entrances are at the top of the rooms, and these are filled with product from pressure vessels, respectively RA and RB.

La sortie SA de la chambre 30A ou la sortie SB de la chambre 30B peut être reliée, par un sélecteur 24, soit à la sortie de distribution 18, soit à un conduit de purge 19.The SA output of chamber 30A or the SB output of chamber 30B can be connected, by a selector 24, either to the distribution outlet 18, or to a purge pipe 19.

En l'espèce, le sélecteur 24 est un sélecteur rotatif capable d'occuper une première position, visible sur les figures 1 et 2, dans laquelle il fait communiquer la sortie SB de la chambre 30B avec la sortie de distribution 18 et la sortie SA de la chambre 30A avec le conduit de purge 19, et une deuxième position dans laquelle la situation est inverse, la sortie SA de la chambre 30A communiquant avec la sortie de distribution 18 et la sortie SB de la chambre 30B communiquant avec le conduit 19. In this case, the selector 24 is a rotary selector capable of occupying a first position, visible in FIGS. 1 and 2, in which it is communicate the SB output of chamber 30B with the distribution output 18 and the SA output of the chamber 30A with the purge duct 19, and a second position in which the situation is the reverse, the exit SA from the chamber 30A communicating with the distribution outlet 18 and the output SB of the chamber 30B communicating with the conduit 19.

Les pistons 34A et 34B présentent chacun au moins une ouverture d'admission, en l'espèce, ils présentent chacun deux ouvertures, respectivement 38A, 38'A et 38B, 38'B.The pistons 34A and 34B each have at least one opening In this case, they each have two openings, respectively 38A, 38'A and 38B, 38'B.

Pour chaque piston, un organe obturateur, respectivement 40A et 40B, est apte à obturer ou à libérer les ouvertures d'admission. Plus précisément, dans l'exemple représenté, les organes obturateurs sont constitués par des boisseaux rotatifs, disposés dans les pistons et capables de tourner par rapport à eux. Les boisseaux comprennent chacun au moins un passage d'admission, respectivement 42A pour le boisseau 40A et 42B pour le boisseau 40B.For each piston, a shutter member, respectively 40A and 40B, is able to close or release the intake openings. More precisely, in the example shown, the shutter members are constituted by rotary bushings, arranged in the pistons and able to rotate relative their. The bushels each comprise at least one intake passage, respectively 42A for 40A and 42B for 40B plug.

La figure 2 montre le boisseau 40A dans sa position dans laquelle il libère les ouvertures d'admission 38A, 38'A du piston 34A, le passage 42A étant disposé en registre avec ces ouvertures. En revanche, le boisseau 40B est disposé dans sa position de fermeture des ouvertures d'admission 38B, 38'B, et l'on voit que sa surface extérieure pleine est située en regard de ces ouvertures.FIG. 2 shows the plug 40A in its position in which it releases the inlet openings 38A, 38'A of the piston 34A, the passage 42A being arranged in register with these openings. In contrast, the bushel 40B is disposed in its closed position of the inlet openings 38B, 38'B, and we see that its solid outer surface is located opposite these openings.

En l'espèce, les boisseaux sont de type tronconique, chaque piston, respectivement 34A, 34B, présentant une cavité conique dans laquelle se trouve le boisseau. La périphérie intérieure de cette cavité et la périphérie extérieure du boisseau forment respectivement une première et une deuxième surface de contact, qui sont désignées par les références 44A et 44'A pour l'ensemble piston-boisseau 34A, 40A, les surfaces de contact de l'ensemble piston-boisseau 34B, 40B n'étant en revanche pas référencées. Pour chaque piston, le boisseau et le piston peuvent occuper l'un par rapport à l'autre une position de travail, dans laquelle ces surfaces de contact sont en contact sensiblement étanche, et une position de lavage dans laquelle elles sont écartées. Ainsi, sur la figure 2, le boisseau 40A a été déplacé par rapport au piston 34A de manière à écarter les surfaces de contact 44A et 44'A. En revanche, le boisseau 40B occupe, par rapport au piston 34B, sa position de travail. D'ailleurs, sur la figure 2, le piston 34A se trouve en dehors de son cylindre de dosage, ce qui est lié au fait qu'il est en situation de lavage et pas en situation de travail.In this case, the bushels are of frustoconical type, each piston, respectively 34A, 34B, having a conical cavity in which find the bushel. The inner periphery of this cavity and the periphery bushel respectively form a first and a second contact surface, which are designated by the references 44A and 44'A for the piston-plug assembly 34A, 40A, the contact surfaces of the assembly piston-plug 34B, 40B is however not referenced. For each piston, the plug and the piston can occupy one with respect to the other a working position, in which these contact surfaces are in contact substantially watertight, and a washing position in which they are apart. Thus, in FIG. 2, the bushel 40A has been moved relative to the piston 34A so as to spread the contact surfaces 44A and 44'A. In However, the plug 40B occupies, relative to the piston 34B, its position of job. Moreover, in FIG. 2, the piston 34A is outside its dosing cylinder, which is related to the fact that it is in washing situation and not in work situation.

La figure 2 montre l'ensemble piston-boisseau 34B, 40B en fin de course, dans laquelle une quantité dosée de produit a été refoulée par la sortie SB. A partir de cette situation, pour admettre une nouvelle quantité de produit dans le cylindre 32B, on fait pivoter le boisseau 40B de manière à placer son passage d'admission 42B en registre avec les ouvertures d'admission 38B, 38'B du piston 34B et l'on remonte ce piston (avec le boisseau) vers le haut du cylindre. Dans cette situation, il se crée une dépression dans le cylindre 32B, et le produit contenu dans la partie supérieure de la chambre 30B a naturellement tendance à remplir ce cylindre. Le piston est alors déplacé vers le haut jusqu'à ce qu'il parvienne dans une position définie de telle sorte que le volume de produit délimité entre les positions haute et basse du piston corresponde au volume de produit dosé devant être refoulé à chaque cycle de déplacement du piston. Bien entendu, la position haute ou la position basse du piston peut être réglée par des moyens appropriés pour définir le volume de produit devant être refoulé. Dans cette position haute, on referme les ouvertures d'admission 38B, 38'B en faisant pivoter le boisseau 40B et l'on déplace le piston 34B vers le bas pour refouler devant lui le produit contenu dans le cylindre 32B.FIG. 2 shows the piston-plug assembly 34B, 40B at the end of race, in which a metered quantity of product has been repressed by the exit SB. From this situation, to admit a new quantity of product in the cylinder 32B, the bushel 40B is rotated so as to place its intake passage 42B in register with intake openings 38B, 38'B piston 34B and the piston (with the bushel) is raised upwards cylinder. In this situation, a depression is created in the cylinder 32B, and the product contained in the upper part of chamber 30B has naturally tend to fill this cylinder. The piston is then moved to up until it reaches a defined position so that the volume of product delimited between the high and low positions of the piston corresponding to the volume of dosed product to be reprocessed each cycle of displacement of the piston. Of course, the high position or the low position of the piston can be adjusted by appropriate means to define the volume of product to be repressed. In this high position, we close the intake openings 38B, 38'B by rotating the bushel 40B and moves the piston 34B downward to push back the product contained therein in the cylinder 32B.

Le dispositif 16 comprend un obturateur 46, disposé en aval des moyens de distribution 24 ou faisant partie desdits moyens, et permettant d'obturer de manière cadencée la sortie de distribution 18. En effet, cette sortie est ouverte lorsque le piston de l'une des chambres est déplacé vers le bas pour refouler devant lui une quantité dosée de produit, mais elle est refermée lorsque ce piston a atteint sa position basse, pour faire en sorte que, lorsque le piston remonte avec ses ouvertures d'admission dégagées, une dépression se crée dans le cylindre de ce piston.The device 16 comprises a shutter 46, disposed downstream of the distribution means 24 or part of said means, and allowing to clock off the dispensing outlet 18. In effect, this exit is opened when the piston of one of the chambers is moved to the down to repress in front of him a metered amount of product but it is closed when this piston has reached its low position, to ensure that, when the piston rises with its open intake openings, a depression is created in the cylinder of this piston.

En l'espèce, comme on le voit sur la figure 3, l'obturateur 46 est disposé dans le conduit formant la sortie de distribution 18 et est formé par un boisseau rotatif à deux positions.In this case, as can be seen in FIG. 3, the shutter 46 is arranged in the duct forming the dispensing outlet 18 and is formed by a two-position rotary plug.

Les pistons sont portés par des tiges, respectivement 35A et 35B, qui s'étendent dans les chambres de dosage, respectivement 30A et 30B. Ils font corps avec ces tiges ou sont fixés sur elles par tout moyen approprié. Pour protéger les produits contenus dans les chambres 30A et 30B du contact des tiges des pistons, des moyens de protection tels que des soufflets 48A, 48B sont disposés autour de ces tiges en étant fixés en partie haute à la paroi des chambres. L'espace intérieur délimité entre les soufflets et les tiges des pistons est mis à l'air ambiant par des conduites de communication non représentées sur la figure 2.The pistons are carried by rods, respectively 35A and 35B, which extend into the dosing chambers 30A and 30B, respectively. They do body with these rods or are attached to them by any suitable means. For to protect the products contained in rooms 30A and 30B from the contact of piston rods, protective means such as bellows 48A, 48B are arranged around these rods by being fixed at the top to the wall of the bedrooms. The interior space delimited between the bellows and the piston rods is vented to ambient air by unrepresented communication lines in Figure 2.

En l'espèce, les tiges des pistons sont creuses et des tiges de commande des boisseaux, respectivement 41A et 41B s'étendent à l'intérieur de ces tiges.In this case, the rods of the pistons are hollow and rods of control bushel respectively 41A and 41B extend inside of these stems.

Pour chaque piston doseur, respectivement 34A, 34B, la cavité de la tige du boisseau, respectivement 41A, 41B présente une entrée située à une extrémité de la tige extérieure au piston et une communication située à l'extrémité opposée. Plus précisément, dans l'exemple représenté, l'entrée de la cavité de chaque tige de boisseau est formée par un raccord, respectivement 56'A, 56'B, formée dans la tête de raccord, respectivement 56A, 56B. Pour chaque tige de boisseau, la communication est formée par un ou plusieurs perçages, respectivement 57A et 57B, faisant communiquer la cavité de la tige du boisseau avec la périphérie extérieure de cette dernière.For each metering piston, respectively 34A, 34B, the cavity of the 41A, 41B, respectively, has an inlet located at a end of the rod outside the piston and a communication located at the opposite end. More specifically, in the example shown, the input of the cavity of each plug stem is formed by a connection, respectively 56'A, 56'B, formed in the coupling head, respectively 56A, 56B. For each bushel stem, the communication is formed by a or several holes 57A and 57B, respectively, communicating the cavity of the bushel rod with the outer periphery of the latter.

Pour sa part, la tige du piston, respectivement 35A, 35B, présente un orifice, respectivement 57'A, 57'B qui est situé en dehors de la chambre d'alimentation.For its part, the piston rod, respectively 35A, 35B, has a orifice, respectively 57'A, 57'B which is located outside the chamber Power.

En position de travail, comme pour l'ensemble piston-boisseau 34B, 40B de la figure 2, un fluide barrière tel que de l'air stérile peut être injecté par l'entrée 56'B dans la tige du boisseau, ressortir par la communication 57B pour circuler dans l'espace annulaire ménagé entre la périphérie externe de la tige du boisseau et la périphérie interne de la tige du piston, et ressortir de cet espace annulaire par l'orifice 57'B. Ceci permet d'éviter l'accumulation de bactéries dans les tiges de boisseau et du piston, et entre elles.In working position, as for piston-plug assembly 34B, 40B of FIG. 2, a barrier fluid such as sterile air can be injected by 56'B input in the plug stem, come out through communication 57B for circulate in the annular space between the outer periphery of the stem of the plug and the inner periphery of the piston rod, and come out of this annular space through the orifice 57'B. This avoids the accumulation of bacteria in the plug shafts and piston, and between them.

En position de lavage, comme pour l'ensemble piston-boisseau 34A, 40A de la figure 2, la communication 57A s'ouvre dans la chambre d'alimentation du fait de l'écartement des surfaces de contact 44A, 44'A. Dans cette position, on peut injecter une solution de nettoyage par l'entrée 56'A et par l'orifice 57'A et cette solution s'écoule vers le bas, par la communication 57A et par l'espace ménagé entre le piston et le boisseau. Elle peut alors être évacuée par le conduit de purge 19.In washing position, as for the piston-plug assembly 34A, 40A of Figure 2, the communication 57A opens in the feed chamber due to the spacing of the contact surfaces 44A, 44'A. In this position, a cleaning solution can be injected through the inlet 56'A and through the orifice 57'A and this solution flows down, through communication 57A and through space arranged between the piston and the bushel. It can then be evacuated by the purge pipe 19.

Les boisseaux sont commandés par les extrémités distales de leurs tiges, situées en dehors des chambres 30A et 30B. Les moyens de commande peuvent par exemple être des vérins pneumatiques rotatifs. On voit ainsi que l'extrémité de la tige 41B du boisseau 40B présente une saillie radiale 41'B, qui est disposée dans la chambre d'un vérin rotatif 50B. Selon que l'air est injecté de l'un ou de l'autre côté de cette excroissance, la rotation du boisseau est commandée dans un sens ou dans le sens opposé. Un vérin 50A du même type commande, quant à lui, la rotation du boisseau 40A.The bushels are controlled by the distal ends of their stems, located outside rooms 30A and 30B. The control means can for example be rotary pneumatic cylinders. We see that the end of the rod 41B of the plug 40B has a radial projection 41'B, which is disposed in the chamber of a rotary cylinder 50B. Depending on whether the air is injected on either side of this outgrowth, the rotation of the bushel is ordered in one direction or in the opposite direction. A cylinder 50A of the same type control, meanwhile, the rotation of the bushel 40A.

Ces vérins sont portés par des supports, respectivement 52A et 52B, eux-mêmes portés par les extrémités distales des tiges de piston, respectivement 35A et 35B.These jacks are carried by supports, respectively 52A and 52B, themselves carried by the distal ends of the piston rods, respectively 35A and 35B.

Grâce à des ressorts de rappel, respectivement 54A, 54B, chaque boisseau est constamment rappelé dans sa position de travail par rapport au piston, dans laquelle les surfaces de contact évoquées précédemment sont en contact sensiblement étanches. Par exemple, ces ressorts prennent appui d'une part sur une partie fixe des vérins 50A, 50B évoqués précédemment, et sur une tête de raccord, respectivement 56A, 56B vissée sur les tiges des boisseaux. Pour commander le positionnement des boisseaux dans leurs positions de lavage, des vérins de déplacement en translation sont également portés par les supports 52A, 52B. On voit ainsi sur la figure 2 que la tête 59A du vérin 58A sollicite le déplacement de la tige 41A du boisseau 40A vers le bas par rapport au piston 38A. Pour cela, la tête du vérin appuie sur la tête de raccord 56A. En revanche, le vérin 58B n'est pas alimenté en fluide sous pression et sa tête 59B reste à distance de la tête de raccord 56B.With return springs, respectively 54A, 54B, each bushel is constantly recalled in its working position with respect to piston, in which the contact surfaces mentioned above are in substantially sealed contact. For example, these springs are supported on the one hand on a fixed part of the cylinders 50A, 50B mentioned above, and on a connecting head, respectively 56A, 56B screwed onto the rods of bushels. To control the positioning of the bushels in their washing positions, displacement cylinders in translation are also carried by the supports 52A, 52B. We thus see in Figure 2 that the head 59A of the jack 58A urges the displacement of the rod 41A of the plug 40A towards the low relative to the piston 38A. For this, the cylinder head presses on the head of connection 56A. In contrast, the cylinder 58B is not fed with fluid under pressure and its head 59B remains at a distance from the connector head 56B.

Le déplacement des pistons est guidé par des plaques de guidage, respectivement une plaque de guidage supérieure 60 et une plaque de guidage inférieure 62. Ces plaques présentent des passages traversants équipés de coussinets de guidage 64 avec lesquels coopèrent les tiges des pistons. En l'espèce, les chambres d'alimentation 30A et 30B ont leurs extrémités supérieures formées dans un corps 31 qui est fixé à la plaque de guidage inférieure 62. Les plaques 60 et 62 sont fixes, elles sont par exemple fixées entre elles par des moyens de fixation et d'entretoisement 66.The displacement of the pistons is guided by guide plates, respectively an upper guide plate 60 and a plate of lower guide 62. These plates have through passages equipped with guide bearings 64 with which the rods of the pistons. In this case, the feed chambers 30A and 30B have their upper ends formed in a body 31 which is attached to the plate lower guide 62. The plates 60 and 62 are fixed, they are for example secured to each other by fixing and bracing means 66.

Le dispositif comprend une platine mobile 68 qui peut se déplacer en va-et-vient entre ces plaques. Les positions extrêmes haute et basse de la platine sont déterminées par des arrêts de sécurité haut et bas, respectivement 70 et 72, respectivement solidaires des plaques 60 et 62. II peut s'agir de cellules détectant la position de la platine et stoppant l'alimentation des moyens de commande du déplacement de cette platine lorsqu'elle parvient à un niveau donné par rapport auxdites cellules, ou bien, d'autres moyens d'arrêt, par exemple des contacts ou des simples butées. Les courses des pistons, qui déterminent les volumes de produit dosés dans les chambres d'alimentation, sont quant à elles réglées en agissant sur la commande des moyens d'entraínement de la platine.The device comprises a movable plate 68 which can move in back and forth between these plates. The extreme high and low positions of the platinum are determined by high and low safety stops, respectively 70 and 72 respectively integral plates 60 and 62. II may be cells detecting the platinum position and stopping the power of the control means of the displacement of this plate when it reaches a given level with respect to said cells, or other stop means, for example contacts or simple stops. The pistons, which determine the volumes of product dosed in the feeding rooms are regulated by acting on the control means for driving the platen.

Selon une disposition avantageuse de l'invention, la platine est déplacée verticalement par un système de vis sans fin. Ainsi, la platine porte deux coussinets à billes, respectivement 74A, 74B, qui sont fixes par rapport à cette platine. Des tiges de vis, respectivement 76A, 76B coopèrent avec ces coussinets. Ces tiges de vis définissent des pistes hélicoïdales pour les billes des coussinets, de sorte que la rotation synchronisée des vis déplace en conséquence en translation la platine 68. En l'espèce, les vis sont entraínées en rotation par des poulies, respectivement 78A, 78B, qu'elles portent respectivement. Ces poulies sont elles-mêmes entraínées en rotation par un système de courroie 80. En effet, comme on le voit mieux sur la figure 5, un servomoteur 81 entraíne en rotation une poulie menante 82, qui coopère avec la courroie 80 pour que cette dernière entraíne les poulies menées 78A et 78B. Par exemple, les poulies 82, 78A, 78B peuvent être disposées en triangle, sensiblement de manière à former les sommets d'un triangle équilatéral. Ceci permet d'équilibrer les efforts s'exerçant sur la courroie 80. Il peut s'agir d'une seule courroie disposée de manière à former des va-et-vient entre les poulies, ou de deux courroies, respectivement raccordées aux poulies 82 et 78A et aux poulies 82 et 78B. Un détecteur d'initiatisation 81' permet de connaítre la position d'initialisation du servomoteur 81.According to an advantageous arrangement of the invention, the plate is moved vertically by a worm system. Thus, the platinum bears two ball bearings, respectively 74A, 74B, which are fixed with respect to this platinum. Screw rods, respectively 76A, 76B cooperate with these pads. These screw rods define helical tracks for the balls pads, so that the synchronized rotation of the screws moves in consequence in translation platinum 68. In this case, the screws are driven in rotation by pulleys, respectively 78A, 78B, which they carry respectively. These pulleys are themselves rotated by a belt system 80. Indeed, as best seen in Figure 5, a actuator 81 rotates a driving pulley 82, which cooperates with the belt 80 for the latter drives driven pulleys 78A and 78B. For example, the pulleys 82, 78A, 78B may be arranged in a triangle, substantially to form the vertices of an equilateral triangle. This allows to balance the forces exerted on the belt 80. It can be a only belt arranged to form back and forth between the pulleys, or two belts respectively connected to pulleys 82 and 78A and to pulleys 82 and 78B. An initiatization detector 81 'makes it possible to know the initialization position of the servomotor 81.

Pour régler la course des pistons, on peut utiliser l'électronique de commande du moteur.To adjust the stroke of the pistons, we can use the electronics of engine control.

La figure 4 est une coupe dans le plan de la platine 68 (perpendiculairement à la direction de déplacement des pistons) et permet donc de mieux comprendre le fonctionnement des moyens d'embrayage des pistons sur cette platine. La platine 68 présente un premier et un deuxième passage, respectivement 84A, 84B, à travers lesquels passent les tiges de piston, respectivement 35A, 35B. Dans ces passages, sont placés des coussinets, respectivement 86A, 86B, qui limitent les efforts de frottement. Les moyens d'embrayage sont aptes à retenir les tiges de piston dans ces passages ou, au contraire, à laisser la platine coulisser librement par rapport à ces tiges.Figure 4 is a section in the plane of the plate 68 (perpendicular to the direction of movement of the pistons) and allows therefore to better understand the operation of the clutch means of the pistons on this board. Platinum 68 has first and second passage, 84A, 84B, respectively, through which the rods of piston, respectively 35A, 35B. In these passages, are placed pads, respectively 86A, 86B, which limit the friction forces. The clutch means are adapted to retain the piston rods in these passages or, conversely, to let the plate slide freely in relation to these stems.

Plus précisément, le premier moyen d'embrayage comprend au moins une première broche solidaire du déplacement en va-et-vient de la platine et apte à être déplacé par rapport à cette dernière entre une position débrayée et une position embrayée dans laquelle elle coopère avec la tige du piston de la première chambre pour retenir cette tige par rapport à la platine, et le deuxième moyen d'embrayage comprend au moins une deuxième broche, solidaire du déplacement en va-et-vient de la platine et apte à être déplacé par rapport à cette dernière entre une position débrayée et une position embrayée dans laquelle elle coopère avec la tige du piston de la deuxième chambre pour retenir cette tige par rapport à la platine.More specifically, the first clutch means comprises at least a first pin integral with the movement back and forth of the plate and able to be moved relative to the latter between a disengaged position and an engaged position in which it cooperates with the piston rod of the first chamber to hold this rod relative to the platen, and the second clutch means comprises at least a second spindle, integral with the movement back and forth of the plate and able to be moved by relative to the latter between a disengaged position and an engaged position in which it cooperates with the piston rod of the second chamber to hold this rod in relation to the plate.

Par l'exemple représenté, comme on le voit sur la figure 4, le premier moyen d'embrayage comprend deux broches, respectivement 87A et 88A, de même que le deuxième moyen d'embrayage comprend deux broches, respectivement 87B et 88B. La platine comprend des passages pour ces broches, formés par des alésages, respectivement 89A et 90A pour les broches 87A et 88A, et 89B et 90B pour les broches 87B, 88B.By the example shown, as seen in Figure 4, the first clutch means comprises two pins, respectively 87A and 88A, same as the second clutch means comprises two pins, respectively 87B and 88B. The stage includes passages for these pins, formed by bores, respectively 89A and 90A for the pins 87A and 88A, and 89B and 90B for the pins 87B, 88B.

Les broches sont mobiles en translation dans ces alésages. De leur côté, les tiges des pistons présentent chacune des gorges, respectivement 91A et 92A pour la tige 35A, et 91B et 92B pour la tige 35B. Sur chaque tige de piston, ces gorges sont parallèles. Sur les figures 2 et 4, la tige 35A du piston 34A est débrayée, et l'on voit que les gorges 91A, 92A ne sont pas placées en registre avec les alésages 89A, 90A, qui sont partiellement masqués par la périphérie externe de la tige du piston. En revanche, la tige 35B du piston 34B est embrayée, les gorges 91B, 92B étant placées dans les alésages 89B, 90B, de sorte que les broches peuvent être introduites dans lesdits alésages. Les broches coopèrent avec les gorges de la périphérie externe de la tige de ce piston, pour bloquer cette dernière par rapport à la platine. Pour chaque ensemble d'embrayage, les deux broches sont disposées en fourche à branches parallèles et les deux gorges du piston sont diamétralement opposées.The pins are movable in translation in these bores. On their side, the piston rods each have grooves 91A and 91A respectively. 92A for the rod 35A, and 91B and 92B for the rod 35B. On each stem of piston, these grooves are parallel. In FIGS. 2 and 4, the piston rod 35A 34A is disengaged, and we see that the grooves 91A, 92A are not placed in register with the bores 89A, 90A, which are partially obscured by the outer periphery of the piston rod. In contrast, the rod 35B of the piston 34B is engaged, the grooves 91B, 92B being placed in the bores 89B, 90B, so that the pins can be introduced into said bores. The pins cooperate with the grooves of the outer periphery of the stem of this piston, to lock the latter relative to the plate. For each clutch assembly, the two pins are arranged in fork to parallel branches and the two piston grooves are diametrically opposed.

Dans l'exemple représenté, les ensembles de broches, respectivement 87A, 88A et 87B, 88B sont commandés séparément, en l'étant chacun par un vérin qui lui est propre, respectivement 94A et 94B. Il s'agit par exemple de vérins pneumatiques dont la partie mobile porte directement les ensembles de broche. Avantageusement, des moyens de détection de position, respectivement 95A, 95B sont associés à chacun des deux vérins pour permettre instantanément, de savoir si le piston correspondant est embrayé ou non. Les vérins sont solidaires de la platine 68, et sont portés par elle lors de son déplacement.In the example shown, the sets of pins, respectively 87A, 88A and 87B, 88B are ordered separately, each being individually cylinder of their own, respectively 94A and 94B. This is for example of pneumatic cylinders whose moving part directly carries the sets of brooch. Advantageously, position detection means, respectively 95A, 95B are associated with each of the two cylinders for instantaneously, whether the corresponding piston is engaged or no. The cylinders are integral with the plate 68, and are worn by it during his displacement.

Les vérins et les détecteurs de position sont représentés sur la figure 3 pour plus de clarté, bien qu'ils ne soient normalement pas visibles sur la coupe.Cylinders and position sensors are shown in Figure 3 for clarity, although they are not normally visible on the chopped off.

Des moyens sont prévus pour que, lorsqu'un piston est débrayé de la platine, déplacer ce piston par rapport à ladite platine.Means are provided so that when a piston is disengaged from the platinum, move this piston relative to said platen.

Ces moyens permettent d'une part, comme on le voit pour le piston 34A de la figure 2, de placer les pistons dans des positions qu'il n'est pas toujours possible d'atteindre avec un déplacement opéré avec la platine. Ainsi, la figure 2 montre le piston 34A en dehors de son cylindre 32A. D'autre part, ils maintiennent le piston dans une position donnée, lorsque celui-ci est débrayé par rapport à la platine, pour rendre la chambre de dosage 34A parfaitement inactive.These means allow one hand, as seen for the piston 34A of Figure 2, to place the pistons in positions that it is not always possible to reach with a displacement operated with the platinum. So, the figure 2 shows the piston 34A outside its cylinder 32A. On the other hand, they keep the piston in a given position when it is disengaged compared to the platinum, to make the dosing chamber 34A perfectly inactive.

Enfin, lorsque l'on souhaite réembrayer un piston précédemment débrayé, il importe de correctement caler sa position pour pouvoir placer les gorges 91A, 92A dans les alésages 89A, 90A. Dans l'exemple représenté, les moyens de positionnement des pistons indépendamment de la platine sont formés par des vérins, respectivement 96A pour le piston 34A et 96B pour le piston 34B. Ces vérins ne sont pas visibles sur le plan de la figure 2, mais ils le sont sur les figures 5 et 6. Ces vérins sont portés par la plaque de guidage supérieure 60, et leurs parties mobiles coopèrent avec les supports des pistons, respectivement 52A et 52B. En l'espèce, chacun des vérins 96A et 96B peut comprendre deux vérins élémentaires, respectivement 96'A et 96"A et 96'B et 96"B pour respectivement solliciter le déplacement du piston vers le haut et vers le bas. Lorsqu'un piston est embrayé sur la platine, le vérin correspondant 96A ou 96B est désactivé, de sorte que le piston peut coulisser librement par rapport à lui. En revanche, lorsque le piston est débrayé par rapport à la platine, on peut activer le vérin correspondant pour maintenir sa position et pour le placer dans la position souhaitée afin de pouvoir le réembrayer.Finally, when you want to re-engage a piston previously if it is disengaged, it is important to correctly position the position in order to place the grooves 91A, 92A in bores 89A, 90A. In the example shown, the Piston positioning means regardless of the platinum are formed by cylinders, respectively 96A for the piston 34A and 96B for the piston 34B. These jacks are not visible in the plane of FIG. 2, but they are in FIGS. 5 and 6. These jacks are carried by the guide plate 60, and their moving parts cooperate with the supports of the pistons respectively 52A and 52B. In this case, each of the cylinders 96A and 96B may comprise two elementary cylinders 96'A and 96'A respectively and 96'B and 96 "B respectively to urge the piston to move towards the up and down. When a piston is engaged on the plate, the cylinder corresponding 96A or 96B is disabled, so that the piston can slide freely in relation to him. On the other hand, when the piston is disengaged by relative to the plate, we can activate the corresponding cylinder to maintain its position and to place it in the desired position in order to be able to re-engage.

Comme le montrent les figures 2 et 3, les sorties SA et SB des chambres 30A et 30B, de même que la sortie de distribution 18, sont formées dans un corps 100. Il s'agit par exemple d'une pièce, présentant des alvéoles, respectivement 100A et 100B qui forment respectivement les portions inférieures des cylindres de dosage 32A et 338, cette pièce étant fixée à un corps central 102, dans lequel sont formées les régions centrales des chambres.As shown in FIGS. 2 and 3, the outputs SA and SB of FIGS. chambers 30A and 30B, as well as the distribution outlet 18, are formed in a body 100. This is for example a room, having cells, respectively 100A and 100B which respectively form the portions lower of the metering cylinders 32A and 338, this part being fixed to a central body 102, in which the central regions of the bedrooms.

Le corps 100 a un premier canal 104A qui relie la sortie SA de la chambre 30A à la sortie de distribution 18 et un deuxième canal 104B qui relie la sortie SB de la chambre 30B à la sortie 18. Ces canaux sont également reliés au conduit de purge 19 et le sélecteur rotatif 24 est disposé à l'intersection des canaux 104A, 104B avec la sortie de distribution 18 et le conduit du purge 19.The body 100 has a first channel 104A which connects the output SA of the chamber 30A at the distribution outlet 18 and a second channel 104B that connects SB output from room 30B to exit 18. These channels are also connected to the purge duct 19 and the rotary selector 24 is arranged to the intersection of the channels 104A, 104B with the dispensing outlet 18 and the bleed pipe 19.

Selon sa position, le sélecteur 24 isole sélectivement l'un ou l'autre des canaux 104A et 104B de la sortie 18. Il raccorde alors le canal isolé au conduit de purge 19.Depending on its position, the selector 24 selectively isolates one or other of the 104A and 104B channels of the output 18. It then connects the isolated channel to the conduit purge 19.

Le sélecteur 24 est commandé entre ses deux positions par un vérin rotatif 106 et l'obturateur 46 est commandé entre ses positions ouverte et fermée par un vérin rotatif 108, synchronisé avec le déplacement du piston actif et de son boisseau.The selector 24 is controlled between its two positions by a jack rotary 106 and the shutter 46 is controlled between its open positions and closed by a rotary jack 108, synchronized with the displacement of the piston active and his bushel.

En fait, le sélecteur 24 et l'obturateur 46 se présentent sous la forme de boisseaux, rappelés contre leurs sièges respectifs, 24' et 46' par des vérins 106', 108' et capables d'être écartés de ces sièges par commande des mêmes vérins. Lorsque les boisseaux sont ainsi écartés, ces boisseaux et les différents conduits du corps 100 peuvent être lavés par circulation d'une solution de lavage. In fact, the selector 24 and the shutter 46 are in the form of bushels, recalled against their respective seats, 24 'and 46' by jacks 106 ', 108' and able to be removed from these seats by command of the same cylinders. When the bushels are thus separated, these bushels and the different 100 body ducts can be washed by circulating a solution of washing.

Lors du lavage d'une chambre 30A ou 30B, par introduction d'une solution de lavage par les orifices 56'A, 57'A ou 56'B, 57'B, la solution peut ressortir par le conduit de purge 19 auquel est raccordée la chambre considérée par le sélecteur 24.When washing a chamber 30A or 30B, by introducing a washing solution through orifices 56'A, 57'A or 56'B, 57'B, the solution can exit through the purge duct 19 to which the chamber is connected considered by the selector 24.

Pour le lavage de l'ensemble du dispositif, les boisseaux 24 et 46 sont écartés de leurs sièges et la solution de lavage peut également être injectée par les entrées de produit EA, EB.For the washing of the entire device, bushels 24 and 46 are away from their seats and the washing solution can also be injected through product entries EA, EB.

L'espace E24, ménagé à l'arrière du boisseau 24 et isolé des chambres 30A et 30B lorsque ce boisseau est en appui contre son siège, peut également être utilisé pour le nettoyage, grâce à des orifices 24'A et 24'B (seulement ébauchés) servant respectivement à l'alimentation et à l'évacuation d'une solution de lavage.The space E24, formed at the back of the bushel 24 and isolated from the rooms 30A and 30B when this bushel is in abutment against its seat, can also be used for cleaning, thanks to 24'A and 24'B (only sketches) used respectively for the feeding and evacuation of a washing solution.

Il en va de même pour l'espace E46 ménagé à l'arrière du boisseau 46, grâce aux orifices 46'A et 46'B (seulement ébauchés).It is the same for the space E46 formed at the rear of the bushel 46, through holes 46'A and 46'B (only roughed out).

Claims (14)

  1. Device for distribution of a liquid or paste-like product, comprising a first supply chamber (30A) having a product intake (EA) connected to a first tank, a first product outlet (SA) and means (34A, 40A) for delivering determined volumes of product through the said outlet in cadenced manner,
    characterised by the fact that it comprises a second supply chamber (30B) having a product intake (EB) connected to a second tank, a second product outlet (SB) and means (34E, 40B) for delivering determined volumes of product through this outlet in cadenced manner and by the fact that it includes a distribution outlet (18) and selection means (24) able to selectively cause the product outlet of one of the chambers to communicate with the said distribution outlet while isolating the product outlet of the other chamber from this distribution outlet.
  2. Device as described in claim 1, characterised by the fact that the product outlets (SA, SB) of the two chambers (30A, 30B) and the distribution outlet (18) are formed in a body (100) having a first channel (104A) connecting the outlet of the first chamber to the distribution outlet and a second channel connecting the outlet of the second chamber to the said distribution outlet, the selection means being able to selectively isolate one or the other of the said channels from the said distribution outlet.
  3. Device as described in claim 1 or 2, characterised by the fact that, for each chamber (30A, 30B), the means for delivering determined volumes of product in cadenced manner comprise a dosing cylinder (32A, 32B) forming a region of the chamber adjacent to the product outlet (SA, SB), a dosing piston (34A, 34B) moveable in reciprocating manner in the said cylinder, at least one product intake opening (38A, 38'A, 38B, 38'B) formed in the said piston and an obturating organ (40A, 40B) able to open or close the said intake opening.
  4. Device as described in claim 3, characterised by the fact that the closing organ is a pot (40A, 40B), able to be displaced with the dosing piston (34A, 34B) in the latter's reciprocating movement and to be turned relative to it to open or close the said intake opening (38A, 38'A, 38B, 38'B).
  5. Device as described in claim 4, characterised by the fact that, for each dosing piston (34A, 34B), the pot (40A, 40B) and the dosing piston present respectively a first and a second contact surface (44A, 44'A) and are able, one relative to the other, to occupy a working position in which the said surfaces are in substantially tight contact and a wash position in which these surfaces are separated.
  6. Device as described in claim 5, characterised by the fact that, for each dosing piston (34A, 34B), the pot (40A, 40B) is arranged inside the piston and presents a hollow rod (41A, 41B) itself arranged inside the rod (35A, 35B) of the piston, the cavity of the rod of the pot presenting an intake (56'A, 56'B) situated at an end of the rod external to the piston and a communication (57A, 57B) situated at the opposite end, while the rod (35A, 35B) of the piston presents an orifice (57'A, 57'B) situated outside the supply chamber.
  7. Device as described in any one of claims 3 to 6, characterised by the fact that it comprises a moveable plate (68), means (81, 80, 74A, 74B, 76A, 76B, 78A, 78B) for displacing the said plate in reciprocating manner and engagement means (87A, 88A, 87B, 88B, 91A, 92A, 91B, 92B) to selectively render the piston (34A) of the first supply chamber (30A) or the piston (34B) of the second supply chamber (30B) attached to the displacement of the plate.
  8. Device as described in claim 7, characterised by the fact that the plate presents a first and a second passage (84A, 848): in which pass respectively the rod (41A) of the piston (34A) of the first supply chamber (30A) and the rod (41B) of the piston (34B) of the second supply chamber (30B), a first engagement means (87A, 88A) able to be displaced relative to the plate (68) between a disengaged position in which it allows relative sliding between the plate (68) and the piston (34A) of the first chamber and an engaged position in which it prevents this sliding, and a second engagement means (87B, 88B) able to be displaced relative to the plate between a disengaged position in which it allows relative sliding between the plate (68) and the piston (34B) of the second chamber and an engaged position in which it prevents this sliding.
  9. Device as described in claim 8, characterised by the fact that the first engagement means comprises at least a first pin (87A, 88A), attached to the reciprocating displacement of the plate and able to be displaced relative to the latter between a disengaged position and an engaged position in which it co-operates with the rod (41A) of the piston (34A) of the first chamber (30A) to retain the said rod relative to the plate (68), and by the fact that the second engagement means comprises at least a second pin (87B, 88B), attached to the reciprocating displacement of the plate and able to be displaced relative to the latter between a disengaged position and an engaged position in which it co-operates with the rod (41B) of the piston (34B) of the second chamber (30B) to retain this rod relative to the plate (68).
  10. Device as described in claim 9, characterised by the fact that the means for controlling the displacements of each pin comprise a ram (94A, 94B) firmly attached to the plate (68).
  11. Device as described in any one of claims 7 to 10, characterised by the fact that it comprises means (96A, 96B) in order, when a piston (34A, 34B) is disengaged from the plate (68), to displace this piston relative to the said plate.
  12. Device as described in any one of claims 7 to 11, characterised by the fact that the means for displacing the plate in reciprocating manner comprise a worm screw (76A, 76B).
  13. Device as described in any one of claims 1 to 12, characterised by the fact that it includes an obturator (46), arranged at the distribution outlet (18) and able to be opened and closed in cadenced manner.
  14. Device as described in claim 13, characterised by the fact that it includes a purge conduit (19), able to be selectively connected to the outlet (SA, SB) of each distribution chamber (30A, 30B).
EP02793240A 2001-11-15 2002-11-15 Device for dispensing a liquid or pasty product Expired - Lifetime EP1444133B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0114770A FR2832124B1 (en) 2001-11-15 2001-11-15 DEVICE FOR DISPENSING A LIQUID OR PASTY PRODUCT
FR0114770 2001-11-15
PCT/FR2002/003912 WO2003042039A1 (en) 2001-11-15 2002-11-15 Device for dispensing a liquid or pasty product

Publications (2)

Publication Number Publication Date
EP1444133A1 EP1444133A1 (en) 2004-08-11
EP1444133B1 true EP1444133B1 (en) 2005-03-30

Family

ID=8869420

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Application Number Title Priority Date Filing Date
EP02793240A Expired - Lifetime EP1444133B1 (en) 2001-11-15 2002-11-15 Device for dispensing a liquid or pasty product

Country Status (7)

Country Link
EP (1) EP1444133B1 (en)
CN (1) CN1274554C (en)
AT (1) ATE292046T1 (en)
DE (1) DE60203533T2 (en)
ES (1) ES2239267T3 (en)
FR (1) FR2832124B1 (en)
WO (1) WO2003042039A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101216235B1 (en) * 2010-10-13 2012-12-28 세크론 주식회사 Apparatus for supplying a powder material
FR3043072A1 (en) * 2015-11-02 2017-05-05 Erca DEVICE FOR DELIVERING DOSE QUANTITIES OF LIQUID OR PASTY PRODUCT
IT202200003845A1 (en) * 2022-03-02 2023-09-02 Pirovano S R L DOSING VALVE FOR FLUID PRODUCTS AND DOSING SYSTEM FOR FLUID PRODUCTS EQUIPPED WITH SUCH A VALVE

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2657430B1 (en) 1990-01-23 1994-02-25 Roland Torterotot DOSER-DISPENSER AND METHOD FOR DOSING A PASTY AND / OR LIQUID PRODUCT.
FR2708563B1 (en) * 1993-08-02 1995-10-27 Erca Unit and method for dosing and distribution of liquid and / or pasty products.
DK25394A (en) * 1994-03-04 1995-09-05 Stormax International As Process for volumetric filling of molds with a flowable mass and a device for carrying out the method
ATE200453T1 (en) * 1997-08-18 2001-04-15 Benhil Gasti Verpackungsmaschi DEVICE AND METHOD FOR DOSAGED FILLING OF LIQUID TO PASTY PRODUCTS

Also Published As

Publication number Publication date
DE60203533T2 (en) 2006-02-16
FR2832124B1 (en) 2004-09-03
EP1444133A1 (en) 2004-08-11
ATE292046T1 (en) 2005-04-15
FR2832124A1 (en) 2003-05-16
DE60203533D1 (en) 2005-05-04
CN1274554C (en) 2006-09-13
ES2239267T3 (en) 2005-09-16
CN1585710A (en) 2005-02-23
WO2003042039A1 (en) 2003-05-22

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