Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
  • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
  • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
  • B05B7/2478—Gun with a container which, in normal use, is located above the gun
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
  • B05B12/004—Arrangements for controlling delivery; Arrangements for controlling the spray area comprising sensors for monitoring the delivery, e.g. by displaying the sensed value or generating an alarm
  • B05B12/006—Pressure or flow rate sensors
  • B05B12/008—Pressure or flow rate sensors integrated in or attached to a discharge apparatus, e.g. a spray gun
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
  • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
  • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
  • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
  • B05B7/2408—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle characterised by the container or its attachment means to the spray apparatus
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
  • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
  • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
  • B05B7/2472—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device comprising several containers

Definitions

• the present invention relates to an improved instrument for spraying liquids, in particular coloring liquids.
• Such an instrument comprises an oblong body, which comprises, situated at its anterior end, a nozzle for emitting a jet of coloring liquid, a container intended to contain a reserve of said liquid, a connector for connection to a source. compressed air which expels the nozzle, in the form of a jet, of the coloring liquid which the latter receives from the container by gravity, and control means making it possible to control the emission of said jet.
• the improvement consists in associating with said container several other containers intended to contain different liquids, all these containers forming together a battery of containers carried by the body of the instrument, while a liquid selector is interposed between this battery of containers and the nozzle, which makes it possible to choose, among all the receptacles, the one which contains the liquid which it is desired to spray through the nozzle.
• One of the receptacles of the battery can contain a cleaning liquid, which makes it possible to clean the device in a particularly simple and rapid manner when changing color.
• the instrument comprises a body (which comprises a nozzle (2) for emitting a liquid jet at its inner end, several containers (3) intended to contain liquids, a nozzle for rac ⁇ cord (4) to an air source ensuring expulsion through the nozzle in the form of a jet of a liquid received from at least one of the receptacles, control means (5) making it possible to control the emission of the jet, and a liquid selector (10) interposed between the body (1) and the containers (3).
• a body which comprises a nozzle (2) for emitting a liquid jet at its inner end, several containers (3) intended to contain liquids, a nozzle for rac ⁇ cord (4) to an air source ensuring expulsion through the nozzle in the form of a jet of a liquid received from at least one of the receptacles, control means (5) making it possible to control the emission of the jet, and a liquid selector (10) interposed between the body (1) and the containers (3).
• the liquid selector (10) comprises means for gradually varying the composition of a mixing of liquids during the emission of the jet.
• the progressive variation of the composition of the liquid to be sprayed is obtained using a selector (10) comprising two successive levels of mixing of liquids from different containers (3).
• the first level consists of two enclosures (7), each of them *, being connected upstream to several containers (3).
• the speakers (7) have the same volume.
• the second level of mixing consists of two chambers (8) of equal volume, one of the chambers (8) being connected upstream to one of the chambers (7), the other chamber (8) being connected upstream to the other enclosure (7), via an opening of adjustable size, the opening corresponding to one of the enclosures (8) decreasing when the opening corresponding to the other enclosure ( 8) increases, the sum of the area of two openings remaining constant.
• the instrument according to the invention can be in compact form, the containers (3) are then in direct contact with the speakers (7), themselves in direct contact with the speakers (8), which are integral with the body (1) of the instrument.
• the instrument according to the invention can also be in a non-compact form.
• the containers (3) and the first level of mixing are preferably integral.
• the second level of mixing is preferably integral with the body (1) of the instrument.
• the two mixing levels can be separated from each other.
• the speakers (8) are connected upstream to the enclosures (7) via, for example, flexible conduits.
• each container (3) has a regulating system (6) for the flow rate of the liquid it contains towards the liquid selector (10), and each container (3) is connected independently to the se ⁇ liquid reader.
• FIG. 1 shows a top view of a first variant of the instrument according to the invention
• FIG. 1 shows a side view of the instrument shown in Figure 1;
• FIG. 3 shows a front view of the instrument shown in Figure 1;
• FIG. 7 shows a sectional view along the axis BB * of the selector of Figures 4, 5 or 6;
• FIG. 8 shows a sectional view along the axis CC of the selector of Figures 4, 5 or 5;
• - Figure 9 shows a side view of the selector of the instrument of Figure 1;
• FIG. 10 shows a top view of all the containers of the instrument of Figure 1;
• FIG. 11 shows a partial side view of a second variant of an instrument according to the invention.
• FIG. 12 shows a sectional view of the second level of melan ⁇ ge of the instrument of Figure 11;
• FIG. 13 shows a sectional view down along the axis DD 'of the second mixing level of Figure 12;
• - Figure 14 shows a sectional view upwards along the axis EE ';
• FIG. 15 shows a sectional view upwards along the axis DD ';
• Figures 1 to 8 show various views of a variant of the instrument according to the invention, in a compact form.
• the instrument consists of a body (1) comprising at its front part a nozzle (2) for the emission of the liquid.
• the body (1) comprises a connection piece (4) to a source of compressed air ensuring the expulsion of the liquid by the nozzle (2) and a double-action control lever (5) making it possible to control the jet emission by controlling the compressed air pressure.
• the set of tanks (3) is connected to a liquid selector (10), which is itself connected to the body (1) and to the nozzle (2) via the conduit (9).
• the selector (10) is shown in detail in FIGS. 4 to 9.
• This selector consists of three parts (11), (12) and (13) - These pieces respectively have faces (11a), (11b) , (12a), (12b), (13a) and (13b) extending perpendicular to their common axis (30).
• the part (12) is located between the parts (11) and (13).
• the face (11b) is in contact with the face (12a), the face (12b) is in contact with the face (13a).
• the parts (11) and (12) are assembled by means of the screws (36).
• the part (12) is mounted to rotate freely around the axis (30) relative to the part (13) by means of the screw (34).
• the part (11) supports, on its face (11a), all of the containers (3), arranged in a circular distribution.
• On this face (11a) are distributed six cylindrical or conical cavities (31) regularly distributed on a circle centered on the axis (30). Each of these cavities is designed to receive a container (3) containing a coloring liquid (paint, ink %) or another liquid (solvent ).
• the part (12) comprises, on its face (12a), two grooves (7) as shown in FIG. 7, extending along a circle centered on the axis (30), of the same radius as the circle on which the cavities (31) are distributed.
• the part (13) has, on its face (13a), two grooves (8) extending along a circle centered on the axis (30), with the same radius as the circle on which the cavities are distributed ( 31) •
• Each groove forms a point at one of its ends and gradually widens towards the other end.
• the face (13a) is shown in the fi ⁇ gure 8. The wide ends of each of the grooves are opposite.
• the containers (3) are mounted on the face (11a) of the part (11).
• the flow conduits (14) connect each container (3) to one of the grooves (7) by crossing the part (11) from one face to the other.
• Each of the flow conduits (14) can be provided with a flow control system (6) ( Figures 4 and 5).
• the part (11) is then forward. taggedly fixed with respect to the part (12).
• the part (11) When the flow conduits (14) do not comprise a flow adjustment system, the part (11) must be movable relative to "the part (12), so that the appropriate containers can be born opposite the grooves (7) (fig. ⁇ ).
• the orifices on the face (12b) of the conduits (15) are symmetrical with respect to the axis (30) of the three parts (11), (12) and (13) and located on a circle centered on the axis of rotation (30) and having the same radius as the circle on which the grooves (8) are positioned.
• the diameter of each of these orifices must be at least equal to the width of the groove (8) in its widest part.
• the grooves (7) are ména ⁇ gées in the face (12a) of the part (12). They could just as easily be made in the face (11b) of the part 11.
• the aim is to have two enclosures (7), each connected to one or more receptacles (3) on the one hand, and each having an orifice on the face (12b), such as the two holes are diametrically opposed.
• the containers (3) are mounted in a circular distribution in the instrument shown. However, any other distribution would be suitable, insofar as the end of each duct (14) can be found opposite one of the grooves (7).
• the containers (3) can be removably mounted. They are then provided with a self-sealing system, which makes it possible to install the containers on the face (11a) and to remove them easily, even when they are not empty (FIG. 4). They can also be fixedly mounted ( Figures 5 and 6).
• the instrument shown has 6 containers (3) - Obviously, this number is not limiting. At least 1 container indé ⁇ pendant per groove (7) is required. The maximum number depends on technological constraints.
• the receptacles (3) containing the liquids necessary for the operation to be carried out are installed on the face (11a): various colored liquids, solvents, thinners, etc. ...
• Each of mixtures 1 and 2 flows through the conduits (15) to the grooves (8).
• the quantity of each mixture admitted into each of the grooves (8) depends on the surface of the groove (8) which is opposite the orifice of the conduits (15).
• the sum of the quantities of liquid 1 and 2 arriving in the chambers (8) remains constant.
• - 'A rotation of the part (12) relative to the part (13) about their common axis (30) moves the orifice of each conduit (15) along a groove (8).
• the two orifices are diametrically opposed, when one of them is opposite the wide part of a groove (8), the other is opposite the narrow part of the other groove nure (8).
• the conduit (9) leads the final mixture to the nozzle (2) by which it will be projected onto the support to be coated.
• the second level of mixing constituted by the orifices of the conduits (15) and the grooves (8) (movable in rotation with respect to each other) and by the conduit (9), makes it possible to vary gradually, in progress the proportion of each of the primary mixtures.
• the instrument is used to project colors, it has many advantages. First of all, the number of containers makes it possible to apply several different colors successively without changing instruments and without wasting time.
• a final mixture can be obtained, the composition of which can vary continuously at any time during the emission of coloring liquid, by rotating the part. (12) relative to the part (13).
• the variation in the composition, therefore in the shade, of the final coloring liquid can be sudden or very gradual, depending on whether the rotation of the part (12) relative to the part (13) is fast or slow.
• FIGS. 11 to 19 Another variant of the instrument according to the invention is shown in FIGS. 11 to 19.
• upstream part the first level of mixing of the selector (10), integral with the containers (3)
• downstream part the second mixing level of the selector (10)
• the two parts of the selector (10) are connected by flexible conduits, not shown.
• the downstream part consists of the body (1) comprising a nozzle (2), a double action emission control lever (5). a con duit (9) connecting the second level of mixing to the body (1).
• This downstream part (18) is shown in detail in FIG. 12. It essentially comprises the parts (13), (19) and (20) whose respective faces (13a) (fig.15), (13b) (fig .16), (19a), (19b) (fig. 3), (20a) (fig.14) and (20b) extend perpendicular to ⁇ their common axis of rotation (32).
• the facing faces are, respectively, (19b) and (13a), (13b) and (20a).
• the part (19) has a central rod (having the axis (32) as its axis) on which the parts (13) and (20) are successively assembled.
• the parts (19) and (20) are fixed relative to the body (1) of the instrument.
• La.pièce (13) is free to rotate about the axis (32) relative to these parts (19) and (20).
• the elastic washer (42) ensures contact between the faces of these parts.
• the part (19) receives, on its face (19a), the two conduits (43) which extend through the part (19) to their orifice (17) on the face (19b).
• Elie also receives an air intake duct (22) which extends into the central rod of the part (19) up to the connection piece (4).
• the part (13) has, on its face (13a), two grooves (8) extending along a circle on the axis (32). Each groove forms a point at one of its ends and gradually widens towards the other end.
• the face (13a) is shown in Figure 15.
• the wide ends of each of the grooves (8) are opposite. From the wide part of each groove (8) leaves a conduit (16).
• the two conduits (16) open into a single conduit (24) which itself opens into a circular groove (23) formed on the face (20a) of the part (20) and centered on the axis (32 ).
• the content of mixture 1 from one of the grooves (7) and mixture 2 from the other, groove (7) is determined by the position of the orifice (17) of each conduit (43) on the face (19b), relative to each groove (8).
• the sum of the quantities of mixture 1 and mixture 2 entering the grooves (8) on the one hand, the groove (23) on the other hand, extend respectively along a circle centered on the axis (32) and having the same radius.
• the two orifices (17) are symmetrical with respect to the axis (32) and located at a distance from this axis (32) equal to the radius of the circles over which the grooves (8) and (23) extend. .
• the diameter of an orifice (17) must be at least equal to the width of the groove (8) in its part the widest.
• a conduit (9) starts from the groove (23) and opens into the body (1).
• the nut (21) is free to rotate about the axis (32) and allows the downstream part secured to the body (1) to be made via the connection end piece (4).
• a rack (25) allows the part (13) to pivot easily relative to the part (19).
• the upstream part is illustrated by FIGS. 17 and 19. It comprises two parts (11) and (12). These parts respectively have faces (11a), (11b), (12a) and (12b) extending perpendicular to their common axis (33).
• the face (11b) is in contact with the face (12a).
• the part (11) supports, on its face (11a), all of the containers (3), arranged along a circle centered on the axis (33).
• the part (12) comprises, on its face (12a), two grooves (7) as shown in FIG. 19, extending along a circle centered on the axis (33), of the same radius as the circle on which are positioned the cavities (31) in which the containers (3) are installed.
• the containers (3) are mounted on the face (11a) of the part (11) preferably by means of quick couplings with double closure (37).
• the flow conduits (14) connect each container (3) to one of the grooves (7) by crossing the part (11) from one face to the other.
• Each of the flow conduits (14) is preferably provided with a flow control system (6).
• Each container (3) is connected to an external compressed air source via the conduit (26) supplying a buffer tank (27), provided with a safety valve (39), from which the air passes in the containers (3) via the conduits (28).
• the conduit (22) has its origin on the conduit (26) upstream of the buffer tank 27, and terminates on the face (19a) of the part (19).
• An adjustment system (40) and a pressure gauge (41) make it possible to control the pressure of the compressed air.
• Each conduit (15) is connected to a conduit (43) by means of a flexible conduit of appropriate length.

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• Chemical & Material Sciences (AREA)
• Analytical Chemistry (AREA)
• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9379727

Family Applications (1)

Country Status (2)

Cited By (3)

Families Citing this family (4)

Citations (2)

• 1989
  • 1989-03-16 FR FR8903413A patent/FR2644369A1/fr not_active Withdrawn
• 1990
  • 1990-03-16 WO PCT/FR1990/000175 patent/WO1990010504A1/fr unknown

Patent Citations (2)

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