EP0165098B1 - Device for the delivery of liquid or pasty ingredients - Google Patents

Device for the delivery of liquid or pasty ingredients Download PDF

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Publication number
EP0165098B1
EP0165098B1 EP85400819A EP85400819A EP0165098B1 EP 0165098 B1 EP0165098 B1 EP 0165098B1 EP 85400819 A EP85400819 A EP 85400819A EP 85400819 A EP85400819 A EP 85400819A EP 0165098 B1 EP0165098 B1 EP 0165098B1
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EP
European Patent Office
Prior art keywords
type
ingredients
pumps
ingredient
pump
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
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EP85400819A
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German (de)
French (fr)
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EP0165098A1 (en
Inventor
Claude Falieu
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COFIDEP SA
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COFIDEP SA
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Priority to AT85400819T priority Critical patent/ATE28272T1/en
Publication of EP0165098A1 publication Critical patent/EP0165098A1/en
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Publication of EP0165098B1 publication Critical patent/EP0165098B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
    • B01F35/882—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise using measuring chambers, e.g. volumetric pumps, for feeding the substances
    • B01F35/8822—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise using measuring chambers, e.g. volumetric pumps, for feeding the substances using measuring chambers of the piston or plunger type

Definitions

  • the present invention relates to a device for the distribution of liquid or pasty ingredients in predetermined quantities, more particularly for the manufacture of paints.
  • the devices which carry out the tinting of white paints lead to the use of a large number of basic paints, preconditioned, according to the desired level of opacity and / or gloss. It is assumed that there are, for example, 5 levels of opacity, 4 or 5 levels of gloss, which leads to storing, for a given conditioning volume, 20 to 25 white base paints which are then nuanced by as many dyes as necessary.
  • the object of the present invention is to considerably reduce the storage of raw materials and to provide a device which makes it possible to reliably obtain, in a preferred application, as large a number as is desired of paints which differ by their level d opacity, their level of gloss and their color, from a limited number of components.
  • the device according to the invention is not limited to its use in the field of painting. It can also be applied in any industry where it is desired to mix predetermined quantities of ingredients of different types so as to obtain a given volume of mixtures having predetermined characteristics.
  • liquids or pastes ingredients whose viscosity at room temperature is such that they can be easily pumped and conveyed in pipes, even of small diameter.
  • first, second and third type is meant that the ingredients classified in each of these categories are essentially of a different chemical nature. Their physical nature can be different: for example for the first and the third type it can be liquids of low viscosity and for the second type of pasty or semi-pasty products.
  • the device according to the invention comprises several metering pumps (5), said pumps are all of the same geometry, in particular of the same internal diameter.
  • Pump geometry (5) may be the same as or different from that of the pumps (2). If the mixture to be obtained must contain a quantity of ingredients of the first type greater than that of ingredients of the second type, the pumps (2) advantageously have a larger internal diameter.
  • the geometry of the pump (6) can be the same as that of either the pumps (2) or the pumps (5) or it can be different. It is obviously necessary to know the volume of ingredients delivered by each type of pump per unit length of stroke of their pistons.
  • Each dosing pump includes a suction valve and a discharge valve. It is advantageously single acting and moved by means of a hydraulic cylinder whose piston is connected by an axis to the piston of the dosing pump which it actuates.
  • the hydraulic cylinders actuating the pumps (2), on the one hand, and the hydraulic cylinders actuating the pumps (5) and (6), on the other hand, are advantageously actuated by different hydraulic motors.
  • Each pump (5) can also be moved, in place of a hydraulic cylinder, by means of an electric DC servo motor which directly actuates the metering pump with dynamo-tachymeter type controls and optical wheel positioning, the control being provided by power circuits varying the speed and acceleration.
  • the mixture obtained from the ingredients of the 3 types is a paint.
  • the device is then characterized in that the ingredient of the first type is a base, the ingredient of the second type is a dye, the ingredient of the third type is a compensating liquid, and in that n is equal to 4.
  • base is meant a colorless or white ingredient which may or may not have the characteristics of a white paint or a varnish.
  • Each of the 4 bases has different characteristics from those of the other 3.
  • the mixture of 2, 3 or 4 bases results in a white paint of predetermined levels of gloss and opacity.
  • the addition of a predetermined amount of dye (s) results in a paint having a predetermined shade.
  • Opacity, specular gloss and hue are determined by means of reference mixtures leading to paint films serving as calibration.
  • compensating liquid is meant a liquid consisting of solvents or diluents compatible with the binder (s) contained in the bases; it is thixotropic or thickened with suitable additives. It keeps the amount of "dye + compensator" in the final mixture constant.
  • the white opacifying pigment is preferably rutile titanium dioxide Ti0 2 .
  • the binder of the same nature and of the same composition for a given system, is either dilutable with water (acrylic binder, styrene-acrylic), or dilutable with at least one solvent immiscible with water (glycerophthalic binder, oleo glycerophthalic).
  • the compensating liquid makes it possible, whatever the shade or shine sought, to provide a constant volume of dye (s) + compensator such that the characteristics of opacity and rheology can be maintained despite the infinity of possible choices.
  • the device according to the invention in its use for the preparation of paints, comprises at least one dye metering pump: the total number of pumps (of the same geometry) depends on the number of dyes that it is desired to use to obtain the predetermined nuances and is therefore theoretically unlimited. In practice, it has been found that the use of fifteen dyes is sufficient.
  • the piston of each cylinder and that of the associated metering pump are arranged separately each in a body. This particular arrangement makes it possible to avoid pollution of the bases by the hydraulic fluid in the event of a leak.
  • each cylinder and the axis of the associated metering pump are connected by means of a quick-disconnect coupling, for example with reverse pitch, thereby facilitating the maintenance and replacement of the defective pump or cylinder. .
  • each reservoir consists of a metal frame, preferably cylindrical, provided internally with a flexible capacity.
  • a metal frame preferably cylindrical, provided internally with a flexible capacity.
  • said frame being provided with 2 electrical contacts (an “overflow” and a “vacuum”) and comprising, in derivation on the pipe connecting it to the associated metering pump, a pipe allowing the recirculation and therefore the homogenization of its content.
  • the free ends of the distribution pipes delivering each ingredient to the container (3) are associated in the form of a concentric distribution nozzle distributing the ingredients of the first type at its periphery; this arrangement facilitates mixing, simplifies subsequent homogenization and avoids splashes of dye on the walls of the container.
  • each reservoir (1) also supplies n metering pumps (8) simultaneously distributing each ingredient of the first type in a second mixing container (9), the strokes of the pistons of the pumps (8) being adjusted correlatively so that the total volume delivered by the pumps (8) remains constant.
  • the assembly thus formed, in the application to the preparation of paints, of 4 metering pumps of the same geometry allows, independently and if necessary simultaneously with the distribution of the components for the preparation of colored paints, to prepare white paints according to the same technique which consists in correlatively adjusting the piston strokes of these 4 metering pumps (8) so as to obtain a constant total volume of white paint, the volume of each ingredient being predetermined according to its characteristics and those of the mixture to be obtained , and the distribution of the 4 bases being carried out simultaneously.
  • the distribution pipes conveying an ingredient of a given type have the same length, counted from the delivery valves of the metering pumps.
  • the means M acting on the stroke of the pistons of the pumps (2), (5) and (6) for correlatively adjusting the quantities of the ingredients of the mixture can be actuated manually: the stroke of each piston is then adjusted, either at suction either at the discharge by positioning stops at predetermined distances from cleats associated with each pump. These distances are for example provided in the form of tables, each adjustment set corresponding to a mixture to be obtained having predetermined characteristics and comparable to those of reference mixtures.
  • the means M are advantageously actuated in an automated manner and controlled by servo motors by means of programmed information.
  • metering pumps (2a), (2b), (2c) and (2d) (figure 1) are each supplied with the ingredient of the first type contained in each of the reservoirs (1a), (1b), (1c ) and (1 d) and are driven by hydraulic cylinders (11 a), (11 b), (11 c) and (11 d) actuated by a hydraulic motor (12).
  • the correlative settings of the piston strokes of the metering pumps (2) are such that the total volume of the components delivered to the mixing container (3) is constant.
  • the metering pumps (5) are each supplied with the ingredient of the second type contained in each of the reservoirs (4a), (4b), ..., (4k), (41) and are driven by hydraulic cylinders (13a).
  • the dosing pump (6) is supplied with an ingredient of the third type contained in the reservoir (7) and driven by a hydraulic cylinder (15) actuated by the hydraulic motor (14).
  • the correlative settings of the piston strokes of the metering pumps (5) and (6) are such that the total volume of ingredients of the second and third type delivered remains constant.
  • each tank (1) further supplies a metering pump (8) driven by a hydraulic cylinder (16).
  • the 4 cylinders are actuated by a hydraulic motor (17).
  • the correlative adjustments of the piston strokes of the metering pumps (8) make it possible to distribute the ingredients of the first type in the container (9) and to obtain a constant total volume.
  • the capacities of the metering pumps (8) are higher than those of the pumps (2) and thus make it possible to prepare a higher quantity of mixture at once.
  • FIG 3 there is shown a reservoir (1) contained in a frame (18) and which feeds a pump (19) which, via a filter (20), itself feeds the metering pump (2 ) comprising suction and discharge valves (10).
  • the piston (21) of the dosing pump (2) is connected to that (22) of the hydraulic cylinder (11) by means of the rod (23).
  • the pipe (24) allows mixing by recycling the contents of the tank (1) (the recycling pressure is obviously lower than the setting pressure of the valves 10).
  • a 3-way valve (25) allows the tank (1) to be filled by reversing the direction of rotation of the pump (19).
  • the tank (1) is of the bellows type surmounted by a weighted cover (26) actuating a counterweight (27) of visible level.
  • the frame (19) is provided with 2 electrical contacts (28) for overflow and (29) for vacuum.
  • the upper part of the tank (1) is connected to the recycling line (24) by means of a flexible line (30).
  • FIG. 4 represents a metering pump (2), its valves (10), its piston (21), associated hydraulic lever (11) comprising its piston (22).
  • the piston (21) comprises a rod (23) and the piston (22) a rod (31); the ends of these rods have threads with inverted pitch and are connected by means of a quick-disconnect fitting (32).
  • a second rod (33) On the face of the piston (22) opposite to that comprising the rod (31) a second rod (33) has been fixed.
  • the stroke of the free end of the rod (33) is equal to the stroke of the piston (21) and can be limited.
  • Figure 5 there is shown a means for limiting the stroke of the piston (21) of the metering pump (2) consisting of a stop ring (34) integral with the rod (31) but adjustable along this rod and a stopper stopper (35), the position of which, relative to the stopper ring (34), is adjustable by means of a threaded pin (36) integral with the toothed wheel (37) rotated by the worm screw (38) driven by the motor (39) which is of the stepping type with speed variation.
  • the stroke of the piston (21) of the metering pump (2) is therefore limited to the delivery, the pump body being filled with ingredient of the first type at time 0.
  • the control of the number of revolutions of the motor (39) can be achieved by means of a computerized system which correlatively adjusts the number of revolutions of the motors associated with the other pumps (2) so that the total volume delivered by the metering pumps (2) is constant and corresponds to a mixture of predetermined characteristics .
  • the strokes of the pistons of the metering pumps (2) and / or (8) can also be limited to suction, as shown in FIG. 6.
  • This particular device comprises a frame (40) of which the jacks (11) are integral, 2 support plates (41) and (42) and 2 motors (43) and (44) fixed indifferently on the frame (40) or the support plate (41).
  • the support plate (41) is crossed by 8 orifices in which are engaged, without friction, 8 threaded rods (45) to (52) parallel to each other; the threaded rods (45) to (48) have the same diameter; the threaded rods (49) to (52) have the same diameter; advantageously the 8 threaded rods have the same diameter.
  • the threaded rods (45) to (52) also pass freely through the support plate (42) through 8 holes.
  • Each of the rods (45) to (52) is grooved at its upper end.
  • the device also comprises 2 plates (53) and (54) adjustable in height relative to each other by means of a motor (43) which actuates, by means of a threaded shaft end ( 55), a ring gear (56) in which is engaged the grooved end of the threaded rod (45), the other end of which is connected to the plate (53) by means of a ball stop (57).
  • the threaded rod (45) is engaged in a threaded ring (59) fixed to the support plate (42).
  • the threaded rod (46) engaged in a threaded ring (59) fixed to the support plate (42) is connected by one of its ends to the plate (53) by means of a ball bearing (60), and by its other end (by means for example of a ball bearing) to a lug (61) whose other end, curved, traps without friction the grooved end of the threaded rod (51), and supports, free in rotation, the wheel rubberized (62) whose central orifice is grooved.
  • the grooved part of the threaded rod (51) passes through a toothed wheel (63) grooved in its center and connected (for example by means of a ball stop) to the support plate (41).
  • the toothed wheel (63) is connected to a second toothed wheel (64) by means of a toothed belt (65).
  • the toothed wheel (64), grooved in its center, is crossed by the grooved end of the threaded rod (52) which passes through the plate (53) via a threaded ring (66) fixed to said plate.
  • the threaded rod (51) also passes through this same plate via the threaded ring (67).
  • a belt (68) connecting 2 notched wheels integral with 2 rings fixed respectively to the rods (45) and (46) makes it possible to transmit the rotational movement from one rod to the other.
  • the threaded rod (47) passes through the support plate (42) via a threaded ring (69) fixed to the support plate (42) and is connected by its lower end to the plate (54) by means of a thrust ball bearing (70).
  • the threaded rod (48) is connected in the same way to the plate (54) by means of the ball bearing (71), and the support plate (42) by means of the threaded ring (72).
  • the upper end of the threaded rod (48) is connected (by means for example of a ball bearing) to a lug (73) whose other end, curved, traps the grooved end of the threaded rod without friction (50) and supports, free to rotate, the rubberized wheel (74) whose central orifice is grooved.
  • the grooved part of the threaded rod (50) passes through a toothed wheel (75) grooved in its center and connected (for example by means of a ball stop) to the support plate (41).
  • the toothed wheel (75) is connected to a second toothed wheel (76) by means of a toothed belt (77).
  • the toothed wheel (76), grooved at its center, is crossed by the grooved end of the threaded rod (49) which passes through the plate (54) via a threaded ring (78) fixed to said plate.
  • the threaded rod (50) passes through this same plate (54) via a threaded ring (79).
  • a belt (80) connects 2 notched wheels integral with the 2 rings fixed to the threaded rods (47) and (48).
  • a means is provided for transmitting to the threaded rod (47) (or (48)) a movement of rotation opposite to that of the rods (45) and (46).
  • It can be a toothed wheel of the same outside diameter as that of the toothed wheel (56), mounted on the grooved end of the rod (47) and also moved by the shaft end (55) of the motor (43).
  • It can also be 2 toothed wheels (81) (82) of the same diameter, grooved in their center, mounted on the grooved ends of the rods (47) and (46) (or (45) and (47)) and connected by a notched belt (83) folded in the shape of 8.
  • the motor (44) makes it possible to rotate the cone (84), advantageously of smooth metal, which is in contact with the rubberized wheels (62) and (74), around its vertical axis, by means of the threaded shaft end (85) and the toothed crown (86).
  • Means, not shown, are provided to allow translation of the cone (84) perpendicular to its axis between the threaded rods (50) and (51), so as to ensure contact with at least one of the wheels (62) and ( 74).
  • the top of the cone (74) is truncated so that, in its extreme position closest to the support plate (41), one of the 2 wheels (62) or (74) is no longer in contact with the cone (84 ).
  • the motors (43) and (44) are reversing the direction of travel.
  • the ends (87), (88), (89) and (90) of the threaded rods (49) to (52) can be provided with a non-elastic protection device.
  • the jacks are connected to each other by a fixing system (91) adjustable in height relative to the frame (40).
  • the fixing system (91) can be provided so that the position of each cylinder relative to the others is precisely adjustable so as to allow alignment of the ends of the control rods (33), and the straight line passing through these ends is parallel to that passing through the ends (87) to (90) of the threaded rods (49) to (52), when the device must deliver an equivolumic mixture of each of the ingredients of the first type.
  • FIG. 7 represents a preferred concentric dispensing nozzle according to the invention. It is cylindrical in shape and has a plurality of tubes; 4 of these tubes (92), (93), (94) and (95) widen at their lower part to form an opening in the form of a part of a circular crown; each of these 4 tubes is supplied with one of the ingredients of the first type.
  • the central tubes are assigned to the distribution of the second and third type ingredients. The upper end of each tube is connected to the free end of the distribution line which must deliver the corresponding ingredient.
  • the concentric distribution nozzle thus makes it possible to prevent drops of dyes being, for example, directed towards the internal wall of the mixing container, or even outside said container.
  • the particular arrangement of the base distribution openings creates a "cylindrical curtain" keeping the dye jets in a vertical path.
  • the binder is a water-dilutable acrylic binder comprising an acrylic resin in dispersion and commonly used additives (surfactants, dispersants, preservative, coalescing solvent).
  • the device also includes 12 dye tanks (4) and a tank (7) containing a compensating liquid consisting of diluents compatible with the binders and thickened with suitable adjuvants.
  • the device used is that of FIG. 1, the free ends of the distribution pipes being associated in the concentric nozzle of FIG. 7.
  • Reference paints were previously produced using known quantities of each of the 4 bases so as to obtain a volume V of white paint and known quantities of at least one dye and of compensating liquid forming a volume v so that the total volume V + v represents the capacity of the smallest container (3).
  • These paintings presented in the form of a palette of references have each been assigned a reference number coding the volume of each of the constituents used. All these reference numbers are stored in a computerized database, and the choice of one of these numbers controls a device which regulates the number of revolutions of the motors (43), (44) and (39), and therefore the positioning of the motors. plates (53) and (54), threaded rods (49) to (52) and stop cleats (35).
  • the hydraulic cylinders are started so that the pistons of the pumps (5) and (6) are in the high position (the "reset” instruction on the motors (39) then returns the cleats stop (35) in the extreme upper position).
  • the cylinders (11) are kept in their low position (empty dosing pump bodies (2)).
  • the starting position of the device of FIG. 6 can be such that the plates (53) and (54) are in the same plane and that the ends (87) to (90) of the threaded rods (49) to (52) pass by a straight line parallel to that (A) connecting the free ends of the control rods (33). If the paint formulation chosen corresponds to this setting initial, no instruction is issued to the motors (43) and (44) and the 4 metering pumps (2) will each deliver a quarter of the volume V. With respect to this initial position, the distance from the plate (54) (and therefore bringing the plate (53)) closer to the right A will provide a more opaque paint.
  • the device according to the invention makes it possible, if desired, to prepare a paint by mixing only 2 components (for example the bases (a) and (d) as described above); the paint obtained also has a predetermined level of opacity and level of gloss.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Accessories For Mixers (AREA)
  • Jellies, Jams, And Syrups (AREA)

Abstract

1. Device for the distribution of liquid or pasty ingredients in predetermined amounts, by means of which a constant volume of mixture of the said ingredients may be obtained comprising reservoirs of ingredients and proportioning pumps which are adjustable in respect of the length of the stroke of their piston, each proportioning pump being provided at its point of discharge with a pipe for distributing the proportioned ingredient into a mixture container (3), teh free ends of all the distribution pipes being combined so as to distribute the ingredients simultaneously into the container (3), hte said device comprising : (a) n reservoirs (1) of ingredients of a first type, (b) n piston-type proportioning pumps (2) of the salme geometry, each pump being fed from a reservoir (1) of ingredients of the first type and equipped at its point of discharge with a pipe which distributes the proportioned ingredient of the first type into the mixture container (3), and each pump being assigned ot each ingredient of the first type capable of constituting one of the ingredients of the mixture, (c) at least one assembly comprising a reservoir (4) of ingredient of a second type, and a proportioning pump (5) fed from the said reservoir (4) and equipped at its point of discharge with a pipe which distributes the proportioned ingredient of the second type into the container (3) (d) a proportioning pump (6) fed from a reservoir (7) of ingredient of a third type and equipped at its point of discharge with a pipe which distributes the ingredient of the third type into the container (3), the device being characterized in that it comprises, in addition ; (e) means M which affect the stroke of the pistons of the pumps (2), (5) and (6) in order to adjust correlatively the amounts of the ingredients of the mixture delivered by the said pumps so that, on the one hand, the total volume delivred by the pumps (2) associated with the reservoirs of ingredients of the first type, remains constant and that, on the other hand, the total volume delivered by the pumps (5) and (6) associated with the reservoirs of ingredients of the second and third types, remains constant.

Description

La présente invention concerne un dispositif pour la distribution d'ingrédients liquides ou pâteux en quantités prédéterminées, plus particulièrement pour la fabrication de peintures.The present invention relates to a device for the distribution of liquid or pasty ingredients in predetermined quantities, more particularly for the manufacture of paints.

Il est connu de réaliser la mise à la teinte de peintures au moyen de divers dispositifs consistant soit à mélanger des peintures colorées dans des proportions déterminées, soit à introduire des doses prédéterminées de colorant(s) dans un récipient contenant une peinture blanche (selon cette seconde variante, les dispositifs connus agissent par dosage volumétrique soit séquentiel comme dans les brevets français N° S 2.351.393, 2.455.991, 2.472.125, soit simultané comme dans le brevet américain N°4.101.055), soit, comme dans le brevet américain N° 4.403.866, à distribuer simultanément dans un récipient, sous agitation, un liant, une ou deux dispersions de pigment et une à trois solutions de colorants et faire circuler le mélange obtenu dans un colorimètre; la comparaison entre la teinte mesurée et celle à obtenir est effectuée dans un ordinateur qui commande l'addition nécessaire de constituant du mélange de façon à obtenir la teinte désirée.It is known to carry out the tinting of paints by means of various devices consisting either of mixing colored paints in predetermined proportions, or of introducing predetermined doses of coloring agent (s) into a container containing a white paint (according to this second variant, the known devices act by volumetric dosing either sequentially as in French patents N ° S 2,351,393, 2,455,991, 2,472,125, or simultaneously as in American patent N ° 4,101,055), or, as in US Patent No. 4,403,866, to be distributed simultaneously in a container, with stirring, a binder, one or two pigment dispersions and one to three solutions of dyes and circulating the mixture obtained in a colorimeter; the comparison between the measured shade and that to be obtained is carried out on a computer which controls the necessary addition of constituent of the mixture so as to obtain the desired shade.

' Les dispositifs qui réalisent des mélanges de peintures colorées présentent les inconvénients de devoir mettre en oeuvre une gamme étendue de produits, donc de nécessiter le stockage d'un grand nombre de conditionnements, d'autant plus élevé que l'on souhaite obtenir des gammes de peintures différant par leur niveau de brillance et/ou d'opacité.'' The devices which make mixtures of colored paints have the drawbacks of having to use a wide range of products, therefore of requiring the storage of a large number of packages, all the higher the more one wishes to obtain ranges paints differing in their level of gloss and / or opacity.

Les dispositifs qui réalisent la mise à la teinte de peintures blanches conduisent à utiliser un grand nombre de peintures de base, préconditionnées, selon le niveau d'opacité et/ou de brillance souhaités. On admet de disposer, par exemple, de 5 niveaux d'opacité, 4 ou 5 niveaux de brillance, ce qui conduit à stocker, pour un volume de condi- tionnementdonné, 20 à 25 peintures de base blanches qui sont ensuite nuancées par autant de colorants que nécessaire.The devices which carry out the tinting of white paints lead to the use of a large number of basic paints, preconditioned, according to the desired level of opacity and / or gloss. It is assumed that there are, for example, 5 levels of opacity, 4 or 5 levels of gloss, which leads to storing, for a given conditioning volume, 20 to 25 white base paints which are then nuanced by as many dyes as necessary.

Le dispositif décrit dans le brevet américain N° 4.403.866 présente l'inconvénient d'être compliqué et d'une mise en oeuvre délicate et qui peut être longue si plusieurs des composants doivent être successivement ajoutés pour obtenir une mise à la teinte correcte.The device described in US Pat. No. 4,403,866 has the drawback of being complicated and difficult to implement and which can be long if several of the components have to be successively added in order to obtain the correct shade.

La présente invention a pour but de considérablement diminuer les stockages de matières premières et de proposer un dispositif qui permet d'obtenir de façon fiable, dans une application privilégiée, un nombre aussi grand que l'on veut de peintures qui diffèrent par leur niveau d'opacité, leur niveau de brillance et leur teinte, à partir d'un nombre restreint de composants.The object of the present invention is to considerably reduce the storage of raw materials and to provide a device which makes it possible to reliably obtain, in a preferred application, as large a number as is desired of paints which differ by their level d opacity, their level of gloss and their color, from a limited number of components.

Le dispositif selon l'invention n'est pas limité à son utilisation dans le domaine de la peinture. Il peut être également appliqué dans toute industrie où l'on souhaite mélanger des quantitiés prédéterminées d'ingrédients de types différents de façon à obtenir un volume donné de mélanges ayant des , caractéristiques prédéterminées.The device according to the invention is not limited to its use in the field of painting. It can also be applied in any industry where it is desired to mix predetermined quantities of ingredients of different types so as to obtain a given volume of mixtures having predetermined characteristics.

Ainsi l'objet de l'invention consiste en un dispositif pour la distribution d'ingrédients liquides ou pâteux en quantités prédéterminées permettant d'obtenir un volume constant de mélange desdits ingrédients, comprenant des réservoirs d'ingrédients et des pompes doseuses réglables par la longueur de la course de leur piston, chaque pompe doseuse étant munie à son refoulement d'une conduite de distribution de l'ingrédient dosé dans un récipient de mélange (3), les extrémités libres de toutes les conduites de distribution étant associées de façon à distribuer simultanément les ingrédients dans le récipient (3), ledit dispositif comprenant:

  • (a) n réservoirs (1 ) d'ingrédients d'un premier type,
  • (b) n pompes doseuses à piston (2) de même géométrie, chacune étant alimentée à partir d'un réservoir (1) d'ingrédients du premier type et munie à son refoulement d'une conduite distribuant l'ingrédient du premier type dosé dans le récipient de mélange (3), et chacune étant affectée à chaque ingrédient du premier type susceptible de constituer l'un des ingrédients du mélange,
  • (c) au moins un ensemble comprenant un réservoir (4) d'ingrédient d'un second type, une pompe doseuse (5) alimentée par ledit réservoir (4) et munie à son refoulement d'une conduite distribuant l'ingrédient du second type dosé dans le récipient (3),
  • (d) une pompe doseuse (6) alimentée par un réservoir (7) d'ingrédient d'un troisième type et munie à son refoulement d'une conduite distribuant l'ingrédient du troisième type dans le récipient (3), et étant caractérisé en ce qu'il comprend en outre:
  • (e) des moyens M agissant sur la course des pistons des pompes (2), (5) et (6) pour régler corrélativement les quantités des ingrédients du mélange délivrées par lesdites pompes, de façon que, d'une part, le volume total délivré par les pompes (2) associées aux réservoirs d'ingrédients du premier type demeure constant et que, d'autre part, le volume total délivré par les pompes (5) et (6) associées aux réservoirs d'ingrédients du second et du troisième type demeure constant.
Thus the object of the invention consists of a device for the distribution of liquid or pasty ingredients in predetermined quantities making it possible to obtain a constant volume of mixture of said ingredients, comprising reservoirs of ingredients and metering pumps adjustable by length. the stroke of their piston, each metering pump being provided at its delivery with a distribution line for the ingredient dosed in a mixing container (3), the free ends of all the distribution pipes being associated so as to distribute simultaneously the ingredients in the container (3), said device comprising:
  • (a) n reservoirs (1) of ingredients of a first type,
  • (b) n piston dosing pumps (2) of the same geometry, each being supplied from a reservoir (1) of ingredients of the first type and provided at its outlet with a pipe distributing the ingredient of the first type dosed in the mixing container (3), and each one being assigned to each ingredient of the first type capable of constituting one of the ingredients of the mixture,
  • (c) at least one assembly comprising a reservoir (4) of an ingredient of a second type, a metering pump (5) supplied by said reservoir (4) and provided at its outlet with a pipe distributing the ingredient of the second type dosed in the container (3),
  • (d) a metering pump (6) supplied by a reservoir (7) of ingredient of a third type and provided at its outlet with a line distributing the ingredient of the third type in the container (3), and being characterized in that it further comprises:
  • (E) means M acting on the stroke of the pistons of the pumps (2), (5) and (6) for correlatively adjusting the quantities of the ingredients of the mixture delivered by said pumps, so that, on the one hand, the volume total delivered by the pumps (2) associated with the reservoirs of ingredients of the first type remains constant and that, on the other hand, the total volume delivered by the pumps (5) and (6) associated with the reservoirs of ingredients of the second and of the third type remains constant.

Par liquides ou pâteux on entend des ingrédients dont la viscosité à température ambiante est telle qu'ils puissent être aisément pompés et véhiculés dans des conduites, même de faible diamètre.By liquids or pastes is meant ingredients whose viscosity at room temperature is such that they can be easily pumped and conveyed in pipes, even of small diameter.

Par premier, second et troisième type on entend que les ingrédients classés dans chacune de ces catégories sont essentiellement de nature chimique différente. Leur nature physique peut être différente: par exemple pour le premier et le troisième type il peut s'agir de liquides de faible viscosité et pour le second type de produits pâteux ou semi- pâteux.By first, second and third type is meant that the ingredients classified in each of these categories are essentially of a different chemical nature. Their physical nature can be different: for example for the first and the third type it can be liquids of low viscosity and for the second type of pasty or semi-pasty products.

Si le dispositif selon l'invention comporte plusieurs pompes doseuses (5), lesdites pompes sont toutes de même géométrie, en particulier de même diamètre intérieur. La géométrie des pompes (5) peut être identique à ou différente de celle des pompes (2). Si le mélange à obtenir doit contenir une quantité d'ingrédients du premier type plus élevée que celle d'ingrédients du second type, les pompes (2) ont avantageusement un diamètre intérieur plus grand.If the device according to the invention comprises several metering pumps (5), said pumps are all of the same geometry, in particular of the same internal diameter. Pump geometry (5) may be the same as or different from that of the pumps (2). If the mixture to be obtained must contain a quantity of ingredients of the first type greater than that of ingredients of the second type, the pumps (2) advantageously have a larger internal diameter.

De même la géométrie de la pompe (6) peut être la même que celle, soit des pompes (2) soit des pompes (5) ou bien elle peut être différente. Il est bien évidemment nécessaire de connaître le volume d'ingrédients délivré par chaque type de pompe par unité de longueur de la course de leurs pistons.Similarly, the geometry of the pump (6) can be the same as that of either the pumps (2) or the pumps (5) or it can be different. It is obviously necessary to know the volume of ingredients delivered by each type of pump per unit length of stroke of their pistons.

Chaque pompe doseuse comprend un clapet à l'aspiration et un clapet au refoulement. Elle est avantageusement à simple effet et mue au moyen d'un vérin hydraulique dont le piston est relié par un axe au piston de la pompe doseuse qu'il actionne. Les vérins hydrauliques actionnant les pompes (2), d'une part, et les vérins hydrauliques actionnant les pompes (5) et (6), d'autre part, sont avantageusement actionnés par des moteurs hydrauliques différents. Chaque pompe (5) peut être également mue, en lieu et place d'un vérin hydraulique, au moyen d'un moteur électrique d'asservissement à courant continu qui actionne directement la pompe doseuse avec des contrôles du type dynamo-tachymétrique et roue optique de positionnement, la commande étant assurée par des circuits de puissance faisant varier la vitesse et l'accélération.Each dosing pump includes a suction valve and a discharge valve. It is advantageously single acting and moved by means of a hydraulic cylinder whose piston is connected by an axis to the piston of the dosing pump which it actuates. The hydraulic cylinders actuating the pumps (2), on the one hand, and the hydraulic cylinders actuating the pumps (5) and (6), on the other hand, are advantageously actuated by different hydraulic motors. Each pump (5) can also be moved, in place of a hydraulic cylinder, by means of an electric DC servo motor which directly actuates the metering pump with dynamo-tachymeter type controls and optical wheel positioning, the control being provided by power circuits varying the speed and acceleration.

Par«corrélativement» on entend que les moyens agissant sur la course des pistons des pompes doseuses (2) sont tels que, par rapport à une position de référence donnée (par exemple celle où chaque pompe est réglée pour distribuer 1 /nième du volume total à obtenir), si l'on augmente le volume d'un ingrédient du premier type distribué par une pompe, on diminue automatiquement de la même quantité la somme des volumes des autres ingrédients du premier type en agissant soit sur une autre pompe uniquement, soit sur plusieurs pompes simultanément. De même les courses des pistons des pompes (5) et (6) sont réglées corrélativement de façon que le volume total délivré des ingrédients du second et du troisième type demeure constant.By “correlatively” is meant that the means acting on the stroke of the pistons of the metering pumps (2) are such that, with respect to a given reference position (for example that where each pump is adjusted to distribute 1 / nth of the total volume to obtain), if we increase the volume of an ingredient of the first type distributed by a pump, we automatically decrease by the same amount the sum of the volumes of the other ingredients of the first type by acting either on another pump only, or on several pumps simultaneously. Likewise, the strokes of the pistons of the pumps (5) and (6) are adjusted correlatively so that the total volume delivered of the ingredients of the second and third type remains constant.

Dans l'utilisation particulière du dispositif selon l'invention, le mélange obtenu à partir des ingrédients des 3 types est une peinture. Le dispositif est alors caractérisé en ce que l'ingrédient du premier type est une base, l'ingrédient du second type est un colorant, l'ingrédient du troisième type est un liquide compensateur, et en ce que n est égal à 4.In the particular use of the device according to the invention, the mixture obtained from the ingredients of the 3 types is a paint. The device is then characterized in that the ingredient of the first type is a base, the ingredient of the second type is a dye, the ingredient of the third type is a compensating liquid, and in that n is equal to 4.

Par base on entend un ingrédient incolore ou blanc qui peut posséder ou non les caractéristiques d'une peinture blanche ou d'un vernis. Chacune des 4 bases a des caractéristiques différentes de celles des 3 autres. Le mélange de 2, 3 ou 4 bases conduit à une peinture blanche de niveaux de brillance et d'opacité prédéterminés. L'addition d'une quantité prédéterminée de colorant(s) conduit à une peinture ayant une nuance prédéterminée. L'opacité, la brillance spéculaire et la teinte sont déterminées au moyen de mélanges de référence conduisant à des films de peinture servant d'étalonnage.By base is meant a colorless or white ingredient which may or may not have the characteristics of a white paint or a varnish. Each of the 4 bases has different characteristics from those of the other 3. The mixture of 2, 3 or 4 bases results in a white paint of predetermined levels of gloss and opacity. The addition of a predetermined amount of dye (s) results in a paint having a predetermined shade. Opacity, specular gloss and hue are determined by means of reference mixtures leading to paint films serving as calibration.

Par liquide compensateur on entend un liquide constitué de solvants ou diluants compatibles avec le ou les liants contenus dans les bases; ilestthixo- trope ou épaissi avec des adjuvants appropriés. Il permet de maintenir constante la quantité de «colorant + compensateur» dans le mélange final.By compensating liquid is meant a liquid consisting of solvents or diluents compatible with the binder (s) contained in the bases; it is thixotropic or thickened with suitable additives. It keeps the amount of "dye + compensator" in the final mixture constant.

Avantageusement les 4 bases sont:

  • - 2 bases superblanches contenant la même teneur en pigment opacifiant blanc, cette teneur étant supérieure à celle d'une peinture blanche ayant un niveau d'opacité renforcé; ces 2 bases superblanches diffèrent par leur niveau de brillance: la première est brillante, la seconde mate, ces 2 niveaux de brillance correspondant à des valeurs commerciales extrêmes,
  • - 2 bases incolores ne contenant donc pas de pigment opacifiant blanc, et qui diffèrent par leur niveau de brillance, la base incolore brillante donnant un film de même brillance spéculaire que la base superblanche brillante, et la base incolore mate donnant un film de même brillance spéculaire que la base superblanche mate.
Advantageously, the 4 bases are:
  • - 2 super-white bases containing the same content of white opacifying pigment, this content being greater than that of a white paint having a reinforced level of opacity; these 2 super-white bases differ in their level of gloss: the first is brilliant, the second mat, these 2 levels of gloss corresponding to extreme commercial values,
  • - 2 colorless bases therefore not containing a white opacifying pigment, and which differ in their level of gloss, the colorless brilliant base giving a film of the same specular gloss as the glossy white base, and the colorless matt base giving a film of the same gloss specular as the matt white base.

Le pigment opacifiant blanc est de préférence le dioxyde de titane rutile Ti02.The white opacifying pigment is preferably rutile titanium dioxide Ti0 2 .

Le liant, de même nature et de même composition pour un système donné, est soit diluable par l'eau (liant acrylique, styrène-acrylique), soit diluable par au moins un solvant non miscible à l'eau (liant glycérophtalique, oléo-glycérophtalique).The binder, of the same nature and of the same composition for a given system, is either dilutable with water (acrylic binder, styrene-acrylic), or dilutable with at least one solvent immiscible with water (glycerophthalic binder, oleo glycerophthalic).

L'utilisation de colorants spécifiques des bases et non universels est préférée car elle permet une plus grande tolérance. Pour améliorer la précision, ces colorants sont avantageusement dilués préalablement à 50 ou 100%.The use of specific base colors and not universal is preferred because it allows greater tolerance. To improve accuracy, these dyes are advantageously diluted beforehand by 50 or 100%.

Le liquide compensateur permet quelles que soient la teinte ou la brillance recherchée d'apporter un volume constant de colorant(s) + compen- sateurtelles que les caractéristiques d'opacité et de rhéologie puissent être maintenues malgré l'infinité de choix possibles.The compensating liquid makes it possible, whatever the shade or shine sought, to provide a constant volume of dye (s) + compensator such that the characteristics of opacity and rheology can be maintained despite the infinity of possible choices.

Le dispositif selon l'invention, dans son utilisation à la préparation de peintures, comprend au moins une pompe doseuse de colorant: le nombre total de pompes (de même géométrie) dépend du nombre de colorants que l'on souhaite mettre en oeuvre pour obtenir les nuances prédéterminées et est donc théoriquement illimité. Pratiquement on a constaté que l'utilisation d'une quinzaine de colorants est suffisante.The device according to the invention, in its use for the preparation of paints, comprises at least one dye metering pump: the total number of pumps (of the same geometry) depends on the number of dyes that it is desired to use to obtain the predetermined nuances and is therefore theoretically unlimited. In practice, it has been found that the use of fifteen dyes is sufficient.

Avantageusement le piston de chaque vérin et celui de la pompe doseuse associée sont disposés séparément chacun dans un corps. Cette disposition particulière permet d'éviter la pollution des bases par le fluide hydraulique en cas de fuite.Advantageously, the piston of each cylinder and that of the associated metering pump are arranged separately each in a body. This particular arrangement makes it possible to avoid pollution of the bases by the hydraulic fluid in the event of a leak.

Avantageusement encore, l'axe de chaque vérin et l'axe de la pompe doseuse associée sont reliés au moyen d'un raccord à démontage rapide, par exemple à pas inversé, facilitant ainsi la maintenance et le remplacement de la pompe ou du vérin défectueux.Advantageously also, the axis of each cylinder and the axis of the associated metering pump are connected by means of a quick-disconnect coupling, for example with reverse pitch, thereby facilitating the maintenance and replacement of the defective pump or cylinder. .

Avantageusement encore chaque réservoir est constitué d'un bâti métallique, de préférence cylindrique, muni intérieurement d'une capacité souple de type «soufflet» surmontée d'un couvercle lesté actionnant un contrepoids de niveau visible, ledit bâti étant muni de 2 contacts électriques (un «trop-plein» et un «vide») et comprenant, en dérivation sur la conduite le reliant à la pompe doseuse associée, une conduite permettant la recirculation et donc l'homogénéisation de son contenu.Advantageously also, each reservoir consists of a metal frame, preferably cylindrical, provided internally with a flexible capacity. of the “bellows” type surmounted by a weighted cover actuating a counterweight of visible level, said frame being provided with 2 electrical contacts (an “overflow” and a “vacuum”) and comprising, in derivation on the pipe connecting it to the associated metering pump, a pipe allowing the recirculation and therefore the homogenization of its content.

De préférence, les extrémités libres des conduites de distribution délivrant chaque ingrédient dans le récipient (3) sont associées sous la forme d'une buse de distribution concentrique distribuant les ingrédients du premier type à sa périphérie; cette disposition facilite le mélangeage, simplifie l'homogénéisation ultérieure et évite les projections de colorant sur les parois du récipient.Preferably, the free ends of the distribution pipes delivering each ingredient to the container (3) are associated in the form of a concentric distribution nozzle distributing the ingredients of the first type at its periphery; this arrangement facilitates mixing, simplifies subsequent homogenization and avoids splashes of dye on the walls of the container.

Selon une variante de l'invention chaque réservoir (1) alimente en outre n pompes doseuses (8) distribuant simultanément chaque ingrédient du premier type dans un second récipient de mélange (9), les courses des pistons des pompes (8) étant réglées corrélativement de façon que le volume total délivré par les pompes (8) demeure constant. L'ensemble formé ainsi, dans l'application à la préparation de peintures, de 4 pompes doseuses de même géométrie permet, indépendamment et le cas échéant simultanément avec la distribution des composants pour la préparation de peintures colorées, de préparer des peintures blanches selon la même technique qui consiste à régler corrélativement les courses des pistons de ces 4 pompes doseuses (8) de façon à obtenir un volume total constant de peinture blanche, le volume de chaque ingrédient étant prédéterminé en fonction de ses caractéristiques et de celles du mélange à obtenir, et la distribution des 4 bases étant effectuée simultanément.According to a variant of the invention each reservoir (1) also supplies n metering pumps (8) simultaneously distributing each ingredient of the first type in a second mixing container (9), the strokes of the pistons of the pumps (8) being adjusted correlatively so that the total volume delivered by the pumps (8) remains constant. The assembly thus formed, in the application to the preparation of paints, of 4 metering pumps of the same geometry allows, independently and if necessary simultaneously with the distribution of the components for the preparation of colored paints, to prepare white paints according to the same technique which consists in correlatively adjusting the piston strokes of these 4 metering pumps (8) so as to obtain a constant total volume of white paint, the volume of each ingredient being predetermined according to its characteristics and those of the mixture to be obtained , and the distribution of the 4 bases being carried out simultaneously.

Avantageusement les conduites de distribution véhiculant un ingrédient de type donné ont la même longueur, comptée à partir des clapets de refoulement des pompes doseuses.Advantageously, the distribution pipes conveying an ingredient of a given type have the same length, counted from the delivery valves of the metering pumps.

Les moyens M agissant sur la course des pistons des pompes (2), (5) et (6) pour régler corrélativement les quantités des ingrédients du mélange peuvent être actionnés manuellement: on règle alors la course de chaque piston, soit à l'aspiration soit au refoulement en positionnant des butées à des distances prédéterminées de taquets associés à chaque pompe. Ces distances sont par exemple fournies sous forme de tableaux, chaque ensemble de réglage correspondant à un mélange à obtenir ayant des caractéristiques prédéterminées et comparables à celles de mélanges de référence.The means M acting on the stroke of the pistons of the pumps (2), (5) and (6) for correlatively adjusting the quantities of the ingredients of the mixture can be actuated manually: the stroke of each piston is then adjusted, either at suction either at the discharge by positioning stops at predetermined distances from cleats associated with each pump. These distances are for example provided in the form of tables, each adjustment set corresponding to a mixture to be obtained having predetermined characteristics and comparable to those of reference mixtures.

Les moyens M sont avantageusement actionnés de façon automatisée et commandés par des moteurs asservis au moyen d'informations programmées.The means M are advantageously actuated in an automated manner and controlled by servo motors by means of programmed information.

On décrira maintenant un dispositif selon l'invention, en se référant aux figures en annexe où:

  • la figure 1 représente une vue schématique d'ensemble du dispositif,
  • la figure 2 représente une vue schématique d'ensemble du dispositif selon la variante qui consiste à utiliser 2 pompes doseuses par réservoir d'ingrédient du premier type,
  • la figure 3 représente une vue d'un réservoir de la pompe doseuse et de son vérin associé,
  • la figure 4 représente une disposition particulière d'une pompe doseuse et de son vérin associé,
  • la figure 5 représente un moyen particulier de réglage de la course de chaque piston,
  • la figure 6 est une vue en perspective d'un moyen particulier de réglage corrélatif des courses des pistons des pompes doseuses (2),
  • la figure 7 représente une buse concentrique de distribution.
A device according to the invention will now be described, with reference to the appended figures in which:
  • FIG. 1 represents an overall schematic view of the device,
  • FIG. 2 represents a schematic overview of the device according to the variant which consists in using 2 metering pumps per reservoir of ingredient of the first type,
  • FIG. 3 represents a view of a reservoir of the dosing pump and its associated jack,
  • FIG. 4 represents a particular arrangement of a metering pump and its associated jack,
  • FIG. 5 represents a particular means of adjusting the stroke of each piston,
  • FIG. 6 is a perspective view of a particular means for correlatively adjusting the strokes of the pistons of the metering pumps (2),
  • FIG. 7 represents a concentric dispensing nozzle.

Quatre pompes doseuses (2a), (2b), (2c) et (2d) (figure 1 ) sont alimentées chacune par l'ingrédient du premier type contenu dans chacun des réservoirs (1 a), (1 b), (1 c) et (1 d) et sont mues par des vérins hydrauliques (11 a), (11 b), (11 c) et (11 d) actionnés par un moteur hydraulique (12). Les réglages corrélatifs des courses des pistons des pompes doseuses (2) sont tels que le volume total des composants délivrés dans le récipient de mélange (3) est constant. Les pompes doseuses (5) sont alimentées chacune par l'ingrédient du second type contenu dans chacun des réservoirs (4a), (4b),..., (4k), (41) et sont mues par des vérins hydrauliques (13a), (13b), ..., (13k), (131) actionnés par un moteur hydraulique (14). La pompe doseuse (6) est alimentée en ingrédient du troisième type contenu dans le réservoir (7) et mue par un vérin hydraulique (15) actionné par le moteur hydraulique (14). Les réglages corrélatifs des courses des pistons des pompes doseuses (5) et (6) sont tels que le volume total d'ingrédients du second et du troisième type délivrés demeure constant.Four metering pumps (2a), (2b), (2c) and (2d) (figure 1) are each supplied with the ingredient of the first type contained in each of the reservoirs (1a), (1b), (1c ) and (1 d) and are driven by hydraulic cylinders (11 a), (11 b), (11 c) and (11 d) actuated by a hydraulic motor (12). The correlative settings of the piston strokes of the metering pumps (2) are such that the total volume of the components delivered to the mixing container (3) is constant. The metering pumps (5) are each supplied with the ingredient of the second type contained in each of the reservoirs (4a), (4b), ..., (4k), (41) and are driven by hydraulic cylinders (13a). , (13b), ..., (13k), (131) actuated by a hydraulic motor (14). The dosing pump (6) is supplied with an ingredient of the third type contained in the reservoir (7) and driven by a hydraulic cylinder (15) actuated by the hydraulic motor (14). The correlative settings of the piston strokes of the metering pumps (5) and (6) are such that the total volume of ingredients of the second and third type delivered remains constant.

Selon une variante de l'invention (figure 2) chaque réservoir (1 ) alimente en outre une pompe doseuse (8) mue par un vérin hydraulique (16). Les 4 vérins sont actionnés par un moteur hydraulique (17). Les réglages corrélatifs des courses des pistons des pompes doseuses (8) permettent de distribuer les ingrédients du premier type dans le récipient (9) et d'obtenir un volume total constant. Avantageusement les capacités des pompes doseuses (8) sont plus élevées que celles des pompes (2) et permettent ainsi de préparer en une fois une quantité de mélange plus élevée.According to a variant of the invention (Figure 2) each tank (1) further supplies a metering pump (8) driven by a hydraulic cylinder (16). The 4 cylinders are actuated by a hydraulic motor (17). The correlative adjustments of the piston strokes of the metering pumps (8) make it possible to distribute the ingredients of the first type in the container (9) and to obtain a constant total volume. Advantageously, the capacities of the metering pumps (8) are higher than those of the pumps (2) and thus make it possible to prepare a higher quantity of mixture at once.

Sur la figure 3 on a représenté un réservoir (1) contenu dans un bâti (18) et qui alimente une pompe (19) qui, par l'intermédiaire d'un filtre (20), alimente elle-même la pompe doseuse (2) comportant des clapets d'aspiration et de refoulement (10). Le piston (21) de la pompe doseuse (2) est relié à celui (22) du vérin hydraulique (11 ) au moyen de la tige (23). La conduite (24) permet le brassage par recyclage du contenu du réservoir (1 ) (la pression de recyclage est évidemment inférieure à la pression de tarage des clapets 10). Un robinet à 3 voies (25) permet le remplissage du réservoir (1 ) par inversion du sens de rotation de la pompe (19). Le réservoir (1) est du type à soufflet surmonté d'un couvercle lesté (26) actionnant un contrepoids (27) de niveau visible. Le bâti (19) est muni de 2 contacts électriques (28) de trop-plein et (29) de vide. La partie supérieure du réservoir (1 ) est reliée à la conduite de recyclage (24) au moyen d'une conduite souple (30).In Figure 3 there is shown a reservoir (1) contained in a frame (18) and which feeds a pump (19) which, via a filter (20), itself feeds the metering pump (2 ) comprising suction and discharge valves (10). The piston (21) of the dosing pump (2) is connected to that (22) of the hydraulic cylinder (11) by means of the rod (23). The pipe (24) allows mixing by recycling the contents of the tank (1) (the recycling pressure is obviously lower than the setting pressure of the valves 10). A 3-way valve (25) allows the tank (1) to be filled by reversing the direction of rotation of the pump (19). The tank (1) is of the bellows type surmounted by a weighted cover (26) actuating a counterweight (27) of visible level. The frame (19) is provided with 2 electrical contacts (28) for overflow and (29) for vacuum. The upper part of the tank (1) is connected to the recycling line (24) by means of a flexible line (30).

La figure 4 représente une pompe doseuse (2), ses clapets (10), son piston (21 ), levérin hydraulique associé (11) comprenant son piston (22). Le piston (21 ) comporte une tige (23) et le piston (22) une tige (31); les extrémités de ces tiges comportent des filets à pas inversé et sont reliées au moyen d'un raccord à démontage rapide (32). Sur la face du piston (22) opposée à celle comportant la tige (31 ) on a fixé une seconde tige (33). La course de l'extrémité libre de la tige (33) est égale à la course du piston (21 ) et peut être limitée.FIG. 4 represents a metering pump (2), its valves (10), its piston (21), associated hydraulic lever (11) comprising its piston (22). The piston (21) comprises a rod (23) and the piston (22) a rod (31); the ends of these rods have threads with inverted pitch and are connected by means of a quick-disconnect fitting (32). On the face of the piston (22) opposite to that comprising the rod (31) a second rod (33) has been fixed. The stroke of the free end of the rod (33) is equal to the stroke of the piston (21) and can be limited.

Sur la figure 5 on a représenté un moyen pour limiter la course du piston (21) de la pompe doseuse (2) consistant en une bague de butée (34) solidaire de la tige (31) mais réglable le long de cette tige et un taquet de butée (35) dont la position, par rapport à la bague de butée (34), est réglable au moyen d'unetigefiletée (36) solidaire de la roue dentée (37) mue en rotation par la vis sans fin (38) actionnée par le moteur (39) qui est du type pas à pas à variation de vitesse. Selon cette variante la course du piston (21 ) de la pompe doseuse (2) est donc limitée au refoulement, le corps de pompe étant rempli d'ingrédient du premier type au temps 0. La commande du nombre de tours du moteur (39) peut être réalisée au moyen d'un système informatisé qui règle corrélativement le nombre de tours des moteurs associés aux autres pompes (2) de façon que le volume total délivré par les pompes doseuses (2) soit constant et corresponde à un mélange de caractéristiques prédéterminées.In Figure 5 there is shown a means for limiting the stroke of the piston (21) of the metering pump (2) consisting of a stop ring (34) integral with the rod (31) but adjustable along this rod and a stopper stopper (35), the position of which, relative to the stopper ring (34), is adjustable by means of a threaded pin (36) integral with the toothed wheel (37) rotated by the worm screw (38) driven by the motor (39) which is of the stepping type with speed variation. According to this variant, the stroke of the piston (21) of the metering pump (2) is therefore limited to the delivery, the pump body being filled with ingredient of the first type at time 0. The control of the number of revolutions of the motor (39) can be achieved by means of a computerized system which correlatively adjusts the number of revolutions of the motors associated with the other pumps (2) so that the total volume delivered by the metering pumps (2) is constant and corresponds to a mixture of predetermined characteristics .

Les courses des pistons des pompes doseuses (2) et/ou (8) peuvent également être limitées à l'aspiration, comme représenté à la figure 6. Ce dispositif particulier comprend un bâti (40) dont sont solidaires les vérins (11 ), 2 plaques supports (41 ) et (42) et 2 moteurs (43) et (44) fixés indifféremment sur le bâti (40) ou la plaque support (41 ). La plaque support (41 ) est traversée par 8 orifices dans lesquels sont engagées, sans frottement, 8tigesfiletées (45) à (52) parallèles entre elles; les tiges filetées (45) à (48) ont le même diamètre; les tiges filetées (49) à (52) ont le même diamètre; avantageusement les 8 tiges filetées ont le même diamètre. Les tiges filetées (45) à (52) traversent également librement la plaque support (42) par 8 orifices. Chacune des tiges (45) à (52) est cannelée à son exrémité supérieure.The strokes of the pistons of the metering pumps (2) and / or (8) can also be limited to suction, as shown in FIG. 6. This particular device comprises a frame (40) of which the jacks (11) are integral, 2 support plates (41) and (42) and 2 motors (43) and (44) fixed indifferently on the frame (40) or the support plate (41). The support plate (41) is crossed by 8 orifices in which are engaged, without friction, 8 threaded rods (45) to (52) parallel to each other; the threaded rods (45) to (48) have the same diameter; the threaded rods (49) to (52) have the same diameter; advantageously the 8 threaded rods have the same diameter. The threaded rods (45) to (52) also pass freely through the support plate (42) through 8 holes. Each of the rods (45) to (52) is grooved at its upper end.

Le dispositif comprend également 2 plateaux (53) et (54) réglables en hauteur l'un par rapport à l'autre au moyen d'un moteur (43) qui actionne, par l'intermédiaire d'un embout d'arbre fileté (55), une couronne dentée (56) dans laquelle est engagée l'extrémité cannelée de la tige filetée (45), dont l'autre extrémité est reliée au plateau (53) au moyen d'une butée à billes (57). La tige filetée (45) est engagée dans une bague filetée (59) fixée à la plaque support (42).The device also comprises 2 plates (53) and (54) adjustable in height relative to each other by means of a motor (43) which actuates, by means of a threaded shaft end ( 55), a ring gear (56) in which is engaged the grooved end of the threaded rod (45), the other end of which is connected to the plate (53) by means of a ball stop (57). The threaded rod (45) is engaged in a threaded ring (59) fixed to the support plate (42).

La tige filetée (46) engagée dans une bague filetée (59) fixée la plaque support (42) est reliée par une de ses extrémités au plateau (53) au moyen d'une butée à billes (60), et par son autre extrémité (au moyen par exemple d'un roulement à billes) à une patte (61 ) dont l'autre extrémité, cintrée, emprisonne sans frottement l'extrémité cannelée de la tige filetée (51), et supporte, libre en rotation, la roue caoutchoutée (62) dont l'orifice central est cannelé. La partie cannelée de la tige filetée (51 ) traverse une roue dentée (63) cannelée en son centre et reliée (par exemple au moyen d'une butée à billes) à la plaque support (41 ). La roue dentée (63) est reliée à une seconde roue dentée (64) au moyen d'une courroie crantée (65). La roue dentée (64), cannelée en son centre, est traversée par l'extrémité cannelée de la tige filetée (52) qui traverse le plateau (53) par l'intermédiaire d'une bague filetée (66) fixée audit plateau. La tige filetée (51) traverse également ce même plateau par l'intermédiaire de la bague filetée (67). Une courroie (68) reliant 2 roues crantées solidaires de 2 bagues fixées respectivement aux tiges (45) et (46) permet de transmettre le mouvement de rotation d'une tige à l'autre.The threaded rod (46) engaged in a threaded ring (59) fixed to the support plate (42) is connected by one of its ends to the plate (53) by means of a ball bearing (60), and by its other end (by means for example of a ball bearing) to a lug (61) whose other end, curved, traps without friction the grooved end of the threaded rod (51), and supports, free in rotation, the wheel rubberized (62) whose central orifice is grooved. The grooved part of the threaded rod (51) passes through a toothed wheel (63) grooved in its center and connected (for example by means of a ball stop) to the support plate (41). The toothed wheel (63) is connected to a second toothed wheel (64) by means of a toothed belt (65). The toothed wheel (64), grooved in its center, is crossed by the grooved end of the threaded rod (52) which passes through the plate (53) via a threaded ring (66) fixed to said plate. The threaded rod (51) also passes through this same plate via the threaded ring (67). A belt (68) connecting 2 notched wheels integral with 2 rings fixed respectively to the rods (45) and (46) makes it possible to transmit the rotational movement from one rod to the other.

La tige filetée (47) traverse la plaque support (42) par l'intermédiaire d'une bague filetée (69) fixée à la plaque support (42) et est reliée par son extrémité inférieure au plateau (54) au moyen d'une butée à billes (70). La tige filetée (48) est reliée de la même façon au plateau (54) au moyen de la butée à billes (71), et de la plaque support (42) au moyen de la bague filetée (72). L'extrémité supérieure de la tige filetée (48) est reliée (au moyen par exemple d'un roulement à billes) à une patte (73) dont l'autre extrémité, cintrée, emprisonne sans frottement l'extrémité cannelée de la tige filetée (50) et supporte, libre en rotation, la roue caoutchoutée (74) dont l'orifice central est cannelé. La partie cannelée de la tige filetée (50) traverse une roue dentée (75) cannelée en son centre et reliée (par exemple au moyen d'une butée à billes) à la plaque support (41 ). La roue dentée (75) est reliée à une seconde roue dentée (76) au moyen d'une courroie crantée (77). La roue dentée (76), cannelée en son centre, est traversée par l'extrémité cannelée de la tige filetée (49) qui traverse le plateau (54) par l'intermédiaire d'une bague filetée (78) fixée audit plateau. La tige filetée (50) traverse ce même plateau (54) par l'intermédiaire d'une bague filetée (79). Une courroie (80) relie 2 roues crantées solidaires des 2 bagues fixées aux tiges filetées (47) et (48).The threaded rod (47) passes through the support plate (42) via a threaded ring (69) fixed to the support plate (42) and is connected by its lower end to the plate (54) by means of a thrust ball bearing (70). The threaded rod (48) is connected in the same way to the plate (54) by means of the ball bearing (71), and the support plate (42) by means of the threaded ring (72). The upper end of the threaded rod (48) is connected (by means for example of a ball bearing) to a lug (73) whose other end, curved, traps the grooved end of the threaded rod without friction (50) and supports, free to rotate, the rubberized wheel (74) whose central orifice is grooved. The grooved part of the threaded rod (50) passes through a toothed wheel (75) grooved in its center and connected (for example by means of a ball stop) to the support plate (41). The toothed wheel (75) is connected to a second toothed wheel (76) by means of a toothed belt (77). The toothed wheel (76), grooved at its center, is crossed by the grooved end of the threaded rod (49) which passes through the plate (54) via a threaded ring (78) fixed to said plate. The threaded rod (50) passes through this same plate (54) via a threaded ring (79). A belt (80) connects 2 notched wheels integral with the 2 rings fixed to the threaded rods (47) and (48).

Un moyen est prévu pour transmettre à la tige filetée (47) (ou (48)) un mouvement de rotation inverse de celui des tiges (45) et (46). Il peut s'agir d'une roue dentée de même diamètre extérieur que celui de la roue dentée (56), montée sur l'extrémité cannelée de la tige (47) et mue également par l'embout d'arbre (55) du moteur (43). Il peut s'agir également de 2 roues dentées (81) (82) de même diamètre, cannelées en leur centre, montées sur les extrémités cannelées des tiges (47) et (46) (ou (45) et (47)) et reliées par une courroie crantée (83) pliée en forme de 8.A means is provided for transmitting to the threaded rod (47) (or (48)) a movement of rotation opposite to that of the rods (45) and (46). It can be a toothed wheel of the same outside diameter as that of the toothed wheel (56), mounted on the grooved end of the rod (47) and also moved by the shaft end (55) of the motor (43). It can also be 2 toothed wheels (81) (82) of the same diameter, grooved in their center, mounted on the grooved ends of the rods (47) and (46) (or (45) and (47)) and connected by a notched belt (83) folded in the shape of 8.

Le moteur (44) permet de mettre en rotation autour de son axe vertical le cône (84), avantageusement en métal lisse, qui est en contact avec les roues caoutchoutées (62) et (74), au moyen de l'embout d'arbre fileté (85) et de la couronne dentée (86). Des moyens, non représentés, sont prévus pour permettre la translation du cône (84) perpendiculairement à son axe entre les tiges filetées (50) et (51 ), de façon à assurer le contact avec au moins une des roues (62) et (74). Le sommet du cône (74) esttronqué de façon que, dans sa position extrême la plus proche de la plaque support (41), l'une des 2 roues (62) ou (74) ne soit plus en contact avec le cône (84).The motor (44) makes it possible to rotate the cone (84), advantageously of smooth metal, which is in contact with the rubberized wheels (62) and (74), around its vertical axis, by means of the threaded shaft end (85) and the toothed crown (86). Means, not shown, are provided to allow translation of the cone (84) perpendicular to its axis between the threaded rods (50) and (51), so as to ensure contact with at least one of the wheels (62) and ( 74). The top of the cone (74) is truncated so that, in its extreme position closest to the support plate (41), one of the 2 wheels (62) or (74) is no longer in contact with the cone (84 ).

Les moteurs (43) et (44) sont à inversion du sens de marche.The motors (43) and (44) are reversing the direction of travel.

Les extrémités (87), (88), (89) et (90) des tiges filetées (49) à (52) peuvent être munies d'un dispositif de protection non élastique.The ends (87), (88), (89) and (90) of the threaded rods (49) to (52) can be provided with a non-elastic protection device.

Avantageusement les vérins sont reliés les uns aux autres par un système de fixation (91 ) réglable en hauteur par rapport au bâti (40). Le système de fixation (91 ) peut être prévu de façon que la position de chaque vérin par rapport aux autres soit réglable avec précision de façon à permettre l'alignement des extrémités des tiges de commande (33), et que la droite passant par ces extrémités soit parallèle à celle passant par les extrémités (87) à (90) des tiges filetées (49) à (52), quand le dispositif doit délivrer un mélangé équivolumique de chacun des ingrédients du premier type.Advantageously, the jacks are connected to each other by a fixing system (91) adjustable in height relative to the frame (40). The fixing system (91) can be provided so that the position of each cylinder relative to the others is precisely adjustable so as to allow alignment of the ends of the control rods (33), and the straight line passing through these ends is parallel to that passing through the ends (87) to (90) of the threaded rods (49) to (52), when the device must deliver an equivolumic mixture of each of the ingredients of the first type.

La figure 7 représente une buse de distribution concentrique préférée selon l'invention. Elle est de forme cylindrique et comporte une pluralité de tubes; 4 de ces tubes (92), (93), (94) et (95) vont en s'élargissant à leur partie inférieure pour constituer une ouverture en forme de partie de couronne circulaire; chacun de ces 4 tubes est alimenté par un des ingrédients du premier type. Les tubes centraux sont affectés à la distribution des ingrédients du second et du troisième type. L'extrémité supérieure de chaque tube est reliée à l'extrémité libre de la conduite de distribution qui doit délivrer l'ingrédient correspondant. Selon l'invention, et dans le cadre de la fabrication de peintures, la distribution de tous les composants de la peinture à préparer étant simultanée, la buse de distribution concentrique permet ainsi d'éviter que des gouttes de colorants soient, par exemple, dirigées vers la paroi interne du récipient de mélange, ou même extérieurement audit récipient. La disposition particulière des ouvertures de distribution de bases crée un «rideau cylindrique» maintenant les jets de colorants dans une trajectoire verticale.FIG. 7 represents a preferred concentric dispensing nozzle according to the invention. It is cylindrical in shape and has a plurality of tubes; 4 of these tubes (92), (93), (94) and (95) widen at their lower part to form an opening in the form of a part of a circular crown; each of these 4 tubes is supplied with one of the ingredients of the first type. The central tubes are assigned to the distribution of the second and third type ingredients. The upper end of each tube is connected to the free end of the distribution line which must deliver the corresponding ingredient. According to the invention, and in the context of the manufacture of paints, the distribution of all the components of the paint to be prepared being simultaneous, the concentric distribution nozzle thus makes it possible to prevent drops of dyes being, for example, directed towards the internal wall of the mixing container, or even outside said container. The particular arrangement of the base distribution openings creates a "cylindrical curtain" keeping the dye jets in a vertical path.

On décrira maintenant le fonctionnement du dispositif selon l'invention, dans son application particulière à la préparation d'une peinture. Le dispositif comprend 4 réservoirs (1a), (1b), (1c) et (1 d) qui contiennent, respectivement:

  • a) une base brillante superblanché (SBB) contenant 20 parties (à moins d'indication contraire, les parties sont des parties en volume) de TiO et 80 parties de liant, donnant un film de brillance spéculaire (BS) égale à 80,
  • b) une base matesuperblanche (SBM) contenant 20 parties de Ti02, 20 parties d'une charge minérale non opacifiante (CaC03, silicate) et 60 parties de liant, donnant un film de brillance spéculaire égale à 5,
  • c) une base brillante incolore (BI) contenant 80 parties de liant et 20 parties d'un composant organique soluble thixotrope tel que cette base a la même viscosité (à 15% près) et la même rhéologie que les 3 autres bases,
  • d) une base mate incolore (MI) contenant 60 parties de liant et 40 parties de charge minérale non opacifiante.
We will now describe the operation of the device according to the invention, in its particular application to the preparation of a paint. The device comprises 4 reservoirs (1a), (1b), (1c) and (1 d) which contain, respectively:
  • a) a superbleached shiny base (SBB) containing 20 parts (unless otherwise indicated, the parts are parts by volume) of TiO and 80 parts of binder, giving a film of specular gloss (BS) equal to 80,
  • b) a matesuperwhite base (SBM) containing 20 parts of Ti0 2 , 20 parts of a non-opaque mineral filler (CaC0 3 , silicate) and 60 parts of binder, giving a film of specular gloss equal to 5,
  • c) a bright colorless base (BI) containing 80 parts of binder and 20 parts of a thixotropic soluble organic component such that this base has the same viscosity (to within 15%) and the same rheology as the other 3 bases,
  • d) a colorless matt base (MI) containing 60 parts of binder and 40 parts of non-opacifying mineral filler.

Le liant est un liant acrylique diluable à l'eau comprenant une résine acrylique en dispersion et des additifs couramment utilisés (tensio-actifs, dispersants, agent de conservation, solvant de coalescence).The binder is a water-dilutable acrylic binder comprising an acrylic resin in dispersion and commonly used additives (surfactants, dispersants, preservative, coalescing solvent).

Le dispositif comprend également 12 réservoirs (4) à colorants ainsi qu'un réservoir (7) contenant un liquide compensateur constitué de diluants compatibles avec les liants et épaissi par des adjuvants appropriés.The device also includes 12 dye tanks (4) and a tank (7) containing a compensating liquid consisting of diluents compatible with the binders and thickened with suitable adjuvants.

Le dispositif utilisé est celui de la figure 1, les extrémités libres des conduites de distribution étant associées dans la buse concentrique de la figure 7.The device used is that of FIG. 1, the free ends of the distribution pipes being associated in the concentric nozzle of FIG. 7.

Les courses des pistons des pompes doseuses (2a), (2b), (2c) et (2d) sont réglées au moyen du dispositif de la figure 6, et celles des pistons des pompes (5) et (6) au moyen du dispositif de la figure 5.The strokes of the pistons of the metering pumps (2a), (2b), (2c) and (2d) are adjusted by means of the device in FIG. 6, and those of the pistons of the pumps (5) and (6) by means of the device in Figure 5.

On a, préalablement, réalisé des peintures de référence à l'aide de quantités connues de chacune des 4 bases de façon à obtenir un volume V de peinture blanche et de quantités connues d'au moins un colorant et de liquide compensateur formant un volume v de façon que le volume total V + v représente la capacité du récipient (3) le plus petit. Ces peintures présentées sous forme d'une palette de références ont chacune été affectées d'un numéro repère codifiant le volume de chacun des constituants utilisés. Tous ces numéros repères sont stockés dans une banque de données informatisée, et le choix d'un de ces numéros commande un dispositif qui règle le nombre de tours des moteurs (43), (44) et (39), donc le position- nementdes plateaux (53) et (54), des tiges filetées (49) à (52) et des taquets de butée (35).Reference paints were previously produced using known quantities of each of the 4 bases so as to obtain a volume V of white paint and known quantities of at least one dye and of compensating liquid forming a volume v so that the total volume V + v represents the capacity of the smallest container (3). These paintings presented in the form of a palette of references have each been assigned a reference number coding the volume of each of the constituents used. All these reference numbers are stored in a computerized database, and the choice of one of these numbers controls a device which regulates the number of revolutions of the motors (43), (44) and (39), and therefore the positioning of the motors. plates (53) and (54), threaded rods (49) to (52) and stop cleats (35).

Lorsque le positionnement des organes mobiles de réglage est réalisé, les vérins hydrauliques sont mis en fonctionnement et toutes les pompes doseuses concernées délivrent simultanément les quantités prédéterminées d'ingrédients correspondants.When the positioning of the mobile adjustment members is carried out, the hydraulic cylinders are put into operation and all the metering pumps concerned simultaneously deliver the predetermined quantities of corresponding ingredients.

A la fin de chaque opération, les vérins hydrauliques sont mis en marche de façon que les pistons des pompes (5) et (6) soient en position haute (l'instruction «reset» sur les moteurs (39) ramène alors les taquets de butée (35) en position extrême supérieure). Les vérins (11) sont maintenus dans leur position basse (corps des pompes doseuses (2) vides).At the end of each operation, the hydraulic cylinders are started so that the pistons of the pumps (5) and (6) are in the high position (the "reset" instruction on the motors (39) then returns the cleats stop (35) in the extreme upper position). The cylinders (11) are kept in their low position (empty dosing pump bodies (2)).

La position de départ du dispositif de la figure 6 peut être telle que les plateaux (53) et (54) soient dans le même plan et que les extrémités (87) à (90) des tiges filetées (49) à (52) passent par une droite parallèle à celle (A) reliant les extrémités libres des tiges de commande (33). Si la formulation de la peinture choisie correspond à ce réglage initial, aucune instruction n'est délivrée aux moteurs (43) et (44) et les 4 pompes doseuses (2) délivreront chacune le quart du volume V. Par rapport à cette position initiale, l'éloignement du plateau (54) (et donc le rapprochement du plateau (53)) de la droite A fournira une peinture plus opaque. De même, pour une position donnée des plateaux (53) et (54), l'éloignement des extrémités des tiges (49) et (52) (et donc le rapprochement des extrémités des tiges (50) et (51 )) de la droite A conduira à l'obtention d'une peinture plus brillante.The starting position of the device of FIG. 6 can be such that the plates (53) and (54) are in the same plane and that the ends (87) to (90) of the threaded rods (49) to (52) pass by a straight line parallel to that (A) connecting the free ends of the control rods (33). If the paint formulation chosen corresponds to this setting initial, no instruction is issued to the motors (43) and (44) and the 4 metering pumps (2) will each deliver a quarter of the volume V. With respect to this initial position, the distance from the plate (54) (and therefore bringing the plate (53)) closer to the right A will provide a more opaque paint. Similarly, for a given position of the plates (53) and (54), the distance of the ends of the rods (49) and (52) (and therefore the approximation of the ends of the rods (50) and (51)) from the right A will lead to a brighter paint.

Le dispositif selon l'invention permet, si on le désire, de préparer une peinture par mélange de 2 composants seulement (par exemple les bases (a) et (d) telles que décrites ci-dessus) ; la peinture obtenue possède également un niveau d'opacité et un niveau de brillance prédéterminés. On peut également préparer des peintures à partir de 2 composants, par exemple de même opacité correspondant à une valeur commerciale mais de brillance différente. Dans ces deux cas, le dispositif est tel que n = 2 et les moyens M ne comprennent alors qu'un moteur et 2 tiges mues en sens inverses et réglant les courses des pistons des 2 pompes.The device according to the invention makes it possible, if desired, to prepare a paint by mixing only 2 components (for example the bases (a) and (d) as described above); the paint obtained also has a predetermined level of opacity and level of gloss. One can also prepare paints from 2 components, for example of the same opacity corresponding to a commercial value but of different gloss. In these two cases, the device is such that n = 2 and the means M then comprise only one motor and 2 rods moved in opposite directions and adjusting the strokes of the pistons of the 2 pumps.

Claims (10)

1. Device for the distribution of liquid or pasty ingredients in predetermined amounts, by means of which a constant volume of mixture of the said ingredients may be obtained, comprising reservoirs of ingredients and proportioning pumps which are adjustable in respect of the length of the stroke of their piston, each proportioning pump being provided at its point of discharge with a pipe for distributing the proportioned ingredient into a mixture container (3), the free ends of all the distribution pipes being combined so as to distribute the ingredients simultaneously into the container (3), the said device comprising:
(a) n reservoirs (1) of ingredients of a first type,
(b) n piston-type proportioning pumps (2) of the same geometry, each pump being fed from a reservoir (1 ) of ingredients of the first type and equipped at its point of discharge with a pipe which distributes the proportioned ingredient of the first type into the mixture container (3), and each pump being assigned to each ingredient of the first type capable of constituting one of the ingredients of the mixture,
(c) at least one assembly comprising a reservoir (4) of ingredient of a second type, and a proportioning pump (5) fed from the said reservoir (4) and equipped at its point of discharge with a pipe which distributes the proportioned ingredient of the second type into the container (3),
(d) a proportioning pump (6) fed from a reservoir (7) of ingredient of a third type and equipped at its point of discharge with a pipe which distributes the ingredient of the third type into the container (3), the device being characterized in that it comprises, in addition:
(e) means M which affect the stroke of the pistons of the pumps (2), (5) and (6) in orderto adjust correlatively the amounts of the ingredients of the mixture delivered by the said pumps, so that, on the one hand, the total volume delivered by the pumps (2) associated with the reservoirs of ingredients of the first type, remains constant and that, on the other hand, the total volume delivered by the pumps (5) and (6) associated with the reservoirs of ingredients of the second and third types, remains constant.
2. Device according to Claim 1, the mixture obtained from the ingredients being a paint, characterized in that the ingredient of the first type is a base, the ingredient of the second type is a colorant and the ingredient of the third type is a compensating liquid, and in that n equals 4.
3. Device according to one of Claims 1 and 2, characterized in that the pumps (2) associated with the reservoirs of ingredients of the first type, are driven by means of hydraulic jacks, and in that each pump (5) associated with the reservoirs of ingredients of the second type is driven directly by means of a direct-current electric servo-motor.
4. Device according to one of Claims 1 to 3, characterized in that the free ends of the distribution pipes which deliver each ingredient into the container (3) are combined in the form of a concentric distribution nozzle which distributes the ingredients of the first type at its periphery.
5. Device according to one of Claims 1 to 4, characterized in that each reservoir (1) of ingredients of the first type feeds, in addition, n proportioning pumps (8) which simultaneously distribute each ingredient of the first type into a second mixture container (9), means being provided in order that the strokes of the pistons of the pumps (8) are adjusted correlatively so that the total volume delivered by the pumps (8) remains constant.
6. Device according to one of Claims 1 to 5, the pumps (2), (5) and (6) being single-acting piston-type proportioning pumps incorporating flap valves (10) at the points of intake and discharge, characterized in thatthe distribution pipes conveying an ingredient of a given type have the same length, measured from the discharge flap valves.
7. Device according to one of Claims 1 to 6, characterized in thatthe means M which affect the stroke of the pistons of the pumps are controlled by servo-motors by means of programmed informations.
8. Device according to one of Claims 1 to 7, each proportioning pump being driven by a piston-type hydraulic jack, characterized in that the piston of each jack and that of the associated proportioning pump are each separately arranged in a body.
9. Device according to Claim 8, characterized in that the spindle of the said jack and the spindle of the associated proportioning pump are connected by means of a rapidly dismantled reverse-pitch connector.
10. Device according to one of Claims 8 and 9, characterized in that each jack piston is equipped, on the face opposite to that bearing the spindle, with a control rod.
EP85400819A 1984-05-15 1985-04-26 Device for the delivery of liquid or pasty ingredients Expired EP0165098B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85400819T ATE28272T1 (en) 1984-05-15 1985-04-26 ARRANGEMENT FOR THE DISTRIBUTION OF LIQUID OR PASTE INGREDIENTS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8407464A FR2564333A1 (en) 1984-05-15 1984-05-15 DEVICE FOR DISPENSING LIQUID OR PASTY INGREDIENTS
FR8407464 1984-05-15

Publications (2)

Publication Number Publication Date
EP0165098A1 EP0165098A1 (en) 1985-12-18
EP0165098B1 true EP0165098B1 (en) 1987-07-15

Family

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EP85400819A Expired EP0165098B1 (en) 1984-05-15 1985-04-26 Device for the delivery of liquid or pasty ingredients

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EP (1) EP0165098B1 (en)
AT (1) ATE28272T1 (en)
DE (1) DE3560330D1 (en)
FR (1) FR2564333A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0732868B2 (en) * 1989-10-04 1995-04-12 倉敷紡績株式会社 Automatic liquid preparation device
US5163010A (en) * 1990-02-22 1992-11-10 Revlon Consumer Products Corporation Formulating device for cosmetically functional cosmetic products
BR9800361A (en) * 1998-02-13 2000-09-26 Renner Du Pont Tintas Automoti Continuous and automatic process for the production of automotive paints and others
ES2211297B1 (en) * 2002-07-26 2005-09-16 Ingenieria De Dosificacion Aplicada ,S.L DOSING MODULE AND PASTRY PRODUCTS MIXING SYSTEM.
US7445372B1 (en) 2004-10-01 2008-11-04 Access Business Group International Llc Custom cosmetic mixer
FR3095128B1 (en) 2019-04-18 2021-04-16 Assistance Et Service Specialise En Innovation Scient Et Technique Device for the automatic preparation of metered mixtures of liquid or semi-liquid products
CN110787718B (en) * 2019-12-05 2024-08-02 无锡普天铁心股份有限公司 Automatic paint proportioning and mixing device
CN111558325B (en) * 2020-06-05 2022-04-01 浙江舜江建设集团有限公司 Novel building material batching device
CN114405428B (en) * 2022-01-19 2022-09-30 湖南德邦生物科技有限公司 Preparation method and device of chitosan oligosaccharide chelated ferrous iron

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB782919A (en) * 1953-12-12 1957-09-18 Kunstzijdespinnerij Nyma Nv A means for delivering small quantities of liquids
GB767279A (en) * 1954-02-06 1957-01-30 Standard Toch Chemicals Inc Liquid dispensing apparatus
GB789919A (en) * 1956-01-23 1958-01-29 Extrudex Ltd Improved pipe coupling
HU170601B (en) * 1974-09-23 1977-07-28
US4101055A (en) * 1976-08-06 1978-07-18 Poitras Edward J Colorant dispenser having time sequence dispensing cycle
DE3201221A1 (en) * 1982-01-16 1983-07-28 Walter 4600 Dortmund Ribic Station for mixing in particular paints and the like
US4403866A (en) * 1982-05-07 1983-09-13 E. I. Du Pont De Nemours And Company Process for making paints

Also Published As

Publication number Publication date
ATE28272T1 (en) 1987-08-15
DE3560330D1 (en) 1987-08-20
EP0165098A1 (en) 1985-12-18
FR2564333A1 (en) 1985-11-22

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