EP1389651B1 - Dispositif de pulvérisation de produit pulvérulent tel que des microbilles de verre - Google Patents
Dispositif de pulvérisation de produit pulvérulent tel que des microbilles de verre Download PDFInfo
- Publication number
- EP1389651B1 EP1389651B1 EP20030366005 EP03366005A EP1389651B1 EP 1389651 B1 EP1389651 B1 EP 1389651B1 EP 20030366005 EP20030366005 EP 20030366005 EP 03366005 A EP03366005 A EP 03366005A EP 1389651 B1 EP1389651 B1 EP 1389651B1
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- EP
- European Patent Office
- Prior art keywords
- main
- slide
- chamber
- opening
- inner slide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/16—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings
- E01C23/166—Means for dispensing particulate material on to freshly applied markings or into the marking material after discharge thereof, e.g. reflective beads, grip-improving particles
Definitions
- the present invention relates to a device to automatically spray products powders for example glass microbeads to time of the marking of the signaling strips on the roads and similar surfaces.
- microbeads of glass when applying a material intended for carry out the horizontal signaling on the roads.
- the microbeads have a non-slip function and light reflection.
- a product powder other than glass microbeads is used, such as crushed minerals, for example silica.
- a machine moving on the road allows to drop paint on the floor and immediately after painting, the microbeads to adhere to painting.
- US 3,967,784 and US 5,169,262 describe such devices in which the needle is intended to slide in a body between a position closure and an open position.
- the product powder is brought into a distribution chamber surrounding the needle.
- the needle When the needle is in position the product escapes through a conduit of output located in the axis of the needle.
- the needle is brought by a piston in the closed position, in which it comes to bear on a seat separating a end of the outlet duct and the body chamber to form a dam.
- Some machines also have filling systems, glass microbeads, using an air depression caused in the tank. It follows therefore air aspirations to Dam level sometimes leading to impossibilities to make an acceptable vacuum in the tank for ensure fast filling.
- fluidization is carried out at the time of the passage of the microbeads of glass in the calibrated passage section allowing to improve the flow of glass microbeads in this place.
- This fluidization is carried out by fluidization air injection, which forces the mounting these guns only on machines equipped with an external source of fluidization air.
- the aim of the invention is to provide a device for spray with a good seal closing.
- the closing of the flow of powdery product is obtained by creating two dams successive stages, which makes it possible to obtain a more safe.
- the first dam is made by the support of main slide against the first seat, and the second dam is obtained by the contact of the slider inside on the second seat.
- Another object of the invention is to ensure a better airtightness between the outlet duct and the distribution chamber.
- inner slide advantageously comprises means flexible sealing elements intended to bear against the second seat. This type of contact of a flexible material, such as an elastomer, on the seat makes it perfectly to ensure airtightness.
- the first and the second means Maneuvering are provided for the opening position be ordered at the same time as the retracted position, and that the main slide goes into position closing before the inner slider goes into advanced position. Thanks to this time lag at the closure, the first dam is in place before the second, and so, the powdery product located downstream of this dam can continue to flow. So when the inner slide comes into contact with the second seat, said seat is more surely free of product powder, and sealing is better guaranteed.
- a spring is housed in the closing chamber, the spring tending to move the main slide to the closed position.
- the shifting of the inner slide and slider principal is further accentuated by the fact that the spring helps the movement of the main slide towards the position of closing.
- the main slide is retained by the spring while the back chamber is put under pressure.
- the inner slider then moves towards the recoil position.
- the sealing end is then less exposed to microbeads when the slider release the dam at the level of the first seat.
- the spring ensures that the slide principal is in the closed position when no air pressure does not supply the rooms of opening and closing.
- the device has an adjustable stop system for position a stop defining either the position opening of the main slide, ie the position of retreat of the inner slider.
- the device comprises a pin mounted radially in the main slide and protruding into a clearance of the slider inside, the edges of the clearance forming stops to limit the stroke of the inner slider by compared to the main slide.
- the body comprises a first wiper seal around the main slide at the outlet in the distribution chamber, and / or the main slide carries a wiper seal around the slider inside the outlet in the room of distribution.
- the inner slider comprises a longitudinal channel leading to the sealing end to bring spray air into the axis of the outlet duct.
- air opens into the outlet duct along the main axis and the product powder is driven to the outlet by this flow.
- the main slider comes into position the remainder of the powder product downstream of the dam at the first seat is also driven, and the second seat is more surely cleared to guarantee that the contact with the sealing end of the inner slider is made without any interposed product.
- the body comprises a spray air inlet
- the longitudinal channel opens at the other end of the inner slider
- the device comprising closure means of which the opening is controlled by the inner slider when said inner slider is in position remote to port the channel longitudinal and the arrival of spray air, the spray air can then be driven to through the longitudinal channel.
- a device is connected to a source of atomizing air, which he It is possible to provide a flow and pressure. Spray air is injected only when the inner slider is in the recoil position, its distribution being directly controlled by the inner slide. So we have a very good way simple order.
- the slide interior has a radial orifice communication the longitudinal channel and the chamber of recoil to bring air spray into the channel longitudinal when pressurized air in the chamber reversing controls the retracted position. So, the air of spraying comes from the control air in the back room. It is therefore not necessary to provide specific spray air source.
- the device further comprises first removable means for closing the radial orifice and second removable means for closing off the air intake the first means, or the second removable means being put in place to choose the source of air spray.
- the removable means are typically plugs.
- the same device can be used indifferently on machines with a generator spraying air or being deprived. Indeed, depending on the machine, just set up one of the plugs and remove each other to convert the device.
- the air of spray comes from a specific source, while in the other case, the spray air comes from a transfer of control air from the back room.
- a first mode of embodiment of the device according to the invention comprises a body 21 extending along a main axis A, extended by a head 22.
- the head 22 fixed in a manner removable on the body 21 by screws 20, has a distribution chamber 18 in communication with a inlet duct 30 substantially perpendicular to the axis A.
- the distribution chamber 18 communicates also with an outlet duct 31 which is substantially coaxial with the main axis A.
- the duct input 30 is intended to feed the chamber 18 with a powdery product such as glass microbeads.
- the outlet duct 31 is provided to evacuate the product powder.
- a deflector 32 is fixed on the conduit of outlet 31 to direct the powdery product into a desired direction.
- a base 33 mounted on the body according to the main axis A forms the connection between the chamber of distribution 18 and the outlet duct 31.
- the conduit outlet 31 is mounted on the head 22 removably and it also encloses an interchangeable nozzle 19 against the base 33.
- the interchangeable nozzle 19 makes it possible to adapt the flow of microbeads by changing its section of passage.
- a main slide 1 is slidably mounted in the body 21 along the main axis A.
- the slide main 1 comprises a main piston 36 integrated, and slidably mounted in a main cylinder 37.
- the piston main 36 shape with the main cylinder 37 a cylinder.
- the main piston 36 divides the cylinder main 37 in an opening chamber 38 located on the side of the head 22, and a closing chamber 39 located the other side of the main piston 36.
- a wiper 35 is carried by the body 21 at the outlet of the main piston 1 in the distribution chamber 18 and surrounds the main slide 1.
- a spring 27 is housed in the closing chamber 39 and is supported on the one hand by a bearing 46 fixed on the body and on the other hand on the piston principal 36, so that it tends to bring the main slide 1 in the direction of the conduit exit 31.
- An inner slide 4 is slidably mounted along the main axis A in the main slide 1.
- An inner piston 40 is also integrated into the inner slide and forms a cylinder with a cylinder 41 arranged coaxially inside the slider main 1.
- the piston 40 delimits a recoil chamber 42 in the cylinder 41, the recoil chamber 42 being located on the side of the head 22.
- On the other side of the piston 40 relative to the recoil chamber 42 is a advancing room 43 which leads to the end of the main slide 1 in the closing chamber 39.
- the opening chamber 38 and the backup chamber 42 are in communication through a pierced communication port 14 radially in the main slide 1.
- An elastic ring 52 is housed in a throat inside the main cylinder 1 for limit the stroke of the inner slider 4 by forming a stop at the inner piston 4. This elastic ring 52 is located at the edge of the advancing chamber.
- the closing chamber 39 is in communication with a closing hole 8 to connect a control fluid supply duct, no represent.
- the opening chamber 38 is in communication with an aperture 9 for connect another supply conduit, no represent.
- the control fluid is preferably air, but could also be a fluid hydraulic.
- the main slide 1 has one end frustoconical 2 located in the distribution chamber 18. This frustoconical end 2 is intended to come into contact with a first seat 3 of the base 33, of form also frustoconical.
- a sealing end 44 of the inner slide 4 carries a seal 5, by example a lip seal.
- the seal 5 is intended to form a seal by contact with a second seat 6.
- the second seat 6, of shape cylindrical, is formed in the base 33 and is coaxial with the main axis A.
- the inner slider 4 has a longitudinal channel 11 which extends right through the slide longitudinally along the main axis A.
- This channel longitizdinal 11 is provided with a nozzle 12 at the end sealing 44 of the inner slider.
- This nozzle 12 has an orifice in the direction of the outlet duct.
- a radial orifice 23 is formed in the inner slider 4 to port the longitudinal channel 11 and the recoil chamber 42.
- the body 21 has, at its end opposite the head, the bearing 46 coaxial with the body 21 and fixed on the body, for example by screwing.
- the bearing 46 supports a set screw 45.
- the axis of the adjusting screw 45 is merged with the axis main.
- the adjusting screw 45 has at its end, towards the head, a face forming a stop 51 and intended to come into contact with the end of Main slide 1.
- Adjustment screw 45 is also pierced along its axis by a housing of balls 10.
- the bead housing 10 has at its end a ball seat 47.
- a ball 15 is placed in the ball housing and the ball 15 is retained at the interior of the housing by a pin 17 crossing radially housing.
- a ball spring 48 is disposed between the ball and the pin 17 and tends to keep the ball bearing against the ball seat 47, towards the head 22.
- a seal is performed between the ball housing 10 and a bore 49 opening at the end of the adjusting screw carrying the face forming a stop 51.
- the inner slider 4 is also guided in bore 49. It has at its opposite end the sealing end 44, a rod 24 intended to come push the ball against the spring 48.
- the rod 24 has a radial orifice 50 intended to communication bore 49 and longitudinal channel 11.
- the input duct 30 must be connected to a source which makes it possible to supply the device with product powder.
- a source which makes it possible to supply the device with product powder.
- This can be for example a reservoir containing glass microbeads and put under pressure.
- the device must also be connected to conduits control for supplying the opening apertures 9 and closing 8 in control air.
- the device can also be fed with air spray.
- a supply line is connected to the screw 45 to supply the housing 10 with air pressure spray.
- the radial orifice 23 is provided with first removable means such as a cap 16.
- Spray air can also be brought into the channel 11 via the radial orifice 23.
- the bead housing 10 is closed by second removable means, such as a plug 25 shown in Figure 2.
- air under pressure is sent to one of the opening or closing apertures 9 8 while the other port is vented, by a control device not shown.
- the pressure in the opening chamber 38 acts on the main piston 36 to hold the slide main 1 in the open position, ie in stop against the abutment face 51 of the screw 45. This pressure also goes against action of the spring 27.
- the pressure in the chamber of recoil 42 acts on the inner piston 40 of the slider interior 4 to push back the inner slider 4 against the elastic ring 52 in a recoil position. In this retracted position, the rod 24 presses on the ball 15 against the ball spring 48 of such so that communication is established between housing ball and bore 49. Spray air penetrates therefore by the housing of balls 10 and goes through the orifice radial 50, the bore 49, the longitudinal channel 11 and is diffused by the nozzle 12, towards the conduit of exit 31.
- the air of atomization leads to its movement, the microbeads contained in the chamber of distribution, and drives them to the outlet duct 31, then against the deflector 32.
- the calibration nozzle 19 determines, by its inside diameter, the flow of balls that can pass into the outlet duct.
- the flow of microbeads can also be adjusted by the position of the main slide defined by the position of the adjusting screw. Indeed, according to the position of this adjusting screw, the passage section between the end of the main slide and the first seat 3, is more or less important.
- the microbeads contained in the outlet duct continue to be hunted. Like the main slide 1 already forms a barrier to the flow of the microbeads, the space downstream of this dam is completely free of product. Thus, when the sealing end 44 of the slide 4 arrives on the second seat 6, in advanced position, the microbeads have already been evacuated, and it is possible to obtain an airtight seal 5 on the second seat 6. sealing is achieved at once if the inlet duct 30 is in overpressure or depression.
- the plug 16 housed in the radial orifice 23, is disassembled, while second removable means forming a plug 26 are installed in the longitudinal channel 11 at the radial orifice 50 to close the channel.
- the plug 16 is used as 26.
- the dwelling of ball 10 is closed by a plug 25 (FIG. 2) provided with a small air hole, which can be protected by a filter 28, to let in and out only the air contained in ball housing 10.
- the air spray comes from the back chamber 42 through the hole 23.
- the inner slider 4 is in recoil position, and that the ball 15 is an obstacle to passage of air, the air can not escape through this orifice because of the presence of the plug 26.
- the air taken in the recoil chamber 42 may flow into the longitudinal channel 11 to escape through the nozzle 12.
- Spray air is therefore only injected when air is admitted into the recoil chamber 42, that is to say when we order the opening. So we have a simple way to configure the spray device on a machine that does not have an air source spray.
- the device is essentially distinguished from the first mode by the fact that the jet is extended by a conical shape on the one hand, and on the other hand, by the the adjusting screw has a stop for come in contact with the inner piston only.
- the main slide is in a open position in rear stop in one position repeatable.
- only the remote position of inner slider can be adjusted using the screw adjustment.
- the position is defined the nozzle inside the dispensing chamber; in particular, we define the position of the cone of this nozzle relative to the first seat. So the section passage between the distribution chamber and the conduit output can be adjusted.
- the device comprises a body 121 extending along of a main axis A. It comprises a chamber of distribution 118 in communication with a conduit input 130 substantially perpendicular to the axis A.
- the distribution chamber 118 communicates also with an outlet duct 131 which is substantially coaxial with the main axis A.
- a deflector 132 is attached to the outlet duct 131 for direct the powdery product in one direction desired.
- a base 133 mounted on the body along the axis principal A forms the connection between the distribution 118 and the outlet conduit 131.
- the conduit output 131 is removably mounted.
- a main slider 101 is slidably mounted in the body 121 along the main axis A.
- the slide 101 has a built-in piston 136, and mounted sliding in a main cylinder 137.
- the piston main 136 form with the main cylinder 137 a cylinder.
- the main piston 136 divides the cylinder main 137 in an opening room 138 located on the side of the outlet duct 131, and a chamber of closure 139 located on the other side of the main piston 136.
- a scraper seal 135 is carried by the body 121 to outlet of the main piston 101 in the chamber of distribution 118 and surrounds the main slider 101.
- a spring 127 is housed in the closing chamber 139 and is supported on the one hand on a bearing 146 fixed on the body 121 and secondly on the piston 136, such so that it tends to bring the main slider 101 in the direction of the outlet duct 131.
- An inner slider 104 is slidably mounted along the main axis A in the main slider 101.
- a sealing end of the inner slider 104 also opens into the distribution chamber 118.
- the main slider 101 has a cavity in which is housed a second seal wiper 171 for sealing between the two slides.
- An inner piston 140 is also integrated into the inner slide and forms a cylinder with a cylinder 141 arranged coaxially inside the slider 101.
- the inner piston 140 delimits a recoil chamber 142 in the cylinder 141, the chamber of recess 142 being located on the side of the outlet duct 131.
- On the other side of the inner piston 140 relative to the back room 142 is an advanced room 143 which opens at the end of the main slider 101 in the closing chamber 139.
- the closing chamber 139 is in communication with a closure port 108 while the opening chamber 138 is in communication with an opening opening 109.
- the chamber opening 138 and the recess chamber 142 are in communication through a pierced opening channel 114 radially in the main slide 101.
- a pin 161 is slidably mounted in a bore 160 practiced radially in the main slider 101.
- the pawn 161 protrudes into a clearance 162 formed on the inner slide 104 and is held elastically in this position by a ring 164 surrounding the main slide. Clearance is limited in direction of the outlet duct 131 by a collar 163.
- the main slider 101 has one end frustoconical 102 located in the distribution chamber 118. This frustoconical end 102 is intended to come in contact with a first seat 103 of the base 133, of also frustoconical shape.
- the sealing end 144 of the inner slide 104 carries a seal 105, intended to form a contact seal with a second seat 106.
- the second seat 106 of cylindrical shape, is formed in the base 133 and is coaxial with the main axis A.
- the inner slider 104 has as in the first embodiment a longitudinal channel 111, provided with a nozzle 112 at the sealing end 144.
- This nozzle 112 has an orifice in the direction of the duct Release. It has a pointed shape that extends beyond of the sealing end 144.
- a radial orifice 123 is formed in the inner slider 104 to put in communication the longitudinal channel 111 and the chamber In FIG. 6, the radial orifice 123 is closed by a plug 116, to use the device with an independent source of spray air.
- the control air as spray air in removing the cap 116 and installing a cap to close the longitudinal channel 111.
- the body 121 At its end opposite the outlet duct 131, the body 121 comprises the bearing 146 coaxial with the body 121 and fixed on the body, for example by screwing.
- the landing 146 supports a set screw 145 whose axis is confused with the main axis A.
- the adjusting screw 145 has at its end, in the direction of the output 131, a stop face 151 and intended for come into contact with the inner piston 136.
- the screw of setting 145 has the same ball device as previously described.
- the operation of the device according to the second embodiment is similar to that according to the first embodiment.
- the main slider 101 abuts directly against the bearing 146, while the piston interior 140 of the inner slider 104 abuts against the abutment face 151.
- the pawn 161, forming an abutment against the collar 163, makes it possible to limit the run of the inner slider 104 relative to the main slide 101, particularly when the inner slide moves to the position of recoil, and possibly to drive the slider interior 104 when the main slider 101 is moves to the closed position.
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Description
- un corps s'étendant le long d'un axe principal,
- une chambre de distribution logée dans le corps et destinée à recevoir le produit pulvérulent en entrée,
- un conduit de sortie coaxial à l'axe principal et en communication avec la chambre de distribution pour conduire le produit pulvérulent en sortie,
- une jonction entre la chambre de distribution et le conduit de sortie comportant un premier siège coaxial à l'axe principal,
- un coulisseau principal monté coulissant dans le corps selon l'axe principal,
- de premiers moyens de manoeuvre pour manoeuvrer le coulisseau principal entre une position d'ouverture, dans laquelle le passage entre la chambre de distribution et le conduit de sortie est ouvert, et une position de fermeture, dans laquelle une extrémité du coulisseau principal est en appui contre le premier siège pour fermer le passage entre la chambre de distribution et le conduit de sortie.
- un coulisseau intérieur monté coulissant dans le coulisseau principal de manière coaxiale,
- un deuxième siège concentrique et intérieur au premier siège,
- de deuxièmes moyens de manoeuvre du coulisseau intérieur pour manoeuvrer le coulisseau intérieur, entre une position avancée, la plus proche du conduit de sortie et une position reculée, la plus éloignée du conduit de sortie, une extrémité d'étanchéité du coulisseau intérieur étant en contact avec le deuxième siège lorsque, simultanément, le coulisseau principal est en position de fermeture et le coulisseau intérieur est en position avancée.
- un cylindre principal ménagé dans le corps de manière coaxiale à l'axe principal,
- un piston principal fixé sur le coulisseau principal pour former un vérin principal avec le cylindre principal en séparant le cylindre principal en une chambre d'ouverture et une chambre de fermeture,
- un orifice d'ouverture pour alimenter la chambre d'ouverture avec un fluide et commander ainsi le passage du coulisseau principal en position d'ouverture, et
- un orifice de fermeture pour alimenter la chambre de fermeture avec un fluide et commander ainsi le passage du coulisseau principal en position de fermeture.
- un cylindre intérieur ménagé dans le coulisseau principal de manière coaxiale à l'axe principal,
- un piston intérieur du coulisseau intérieur pour former un vérin intérieur avec le cylindre intérieur en séparant le cylindre intérieur en une chambre de recul et une chambre d'avancée, la chambre d'avancée étant en communication avec la chambre de fermeture, et
- un orifice de communication ménagé dans le coulisseau principal pour mettre en communication la chambre de recul avec l'orifice d'ouverture par l'intermédiaire de la chambre d'ouverture.
- la figure 1 représente, en coupe longitudinale, un dispositif selon un premier mode de réalisation de l'invention en position d'ouverture, configuré avec une alimentation externe d'air de fluidisation ;
- la figure 2 est une vue similaire à la figure 1, avec une configuration pour une alimentation interne de l'air de fluidisation ;
- la figure 3 est une vue similaire à la figure 1, le dispositif étant en position de fermeture ;
- la figure 4 est une vue du détail IV de la figure 3 ;
- la figure 5 représente, une vue en perspective et en coupe longitudinale du dispositif de la figure 1 ;
- la figure 6 est une vue similaire à la figure 1 d'un deuxième mode de réalisation de l'invention ;
- la figure 7 est une vue similaire à la figure 6, le dispositif étant dans une position intermédiaire ;
- la figure 8 est une vue similaire à la figure 6, le dispositif étant dans une position fermée ;
- la figure 9 une vue du détail IX de la figure 8.
Claims (11)
- Dispositif de pulvérisation d'un produit pulvérulent comportant :un corps (21, 22) s'étendant le long d'un axe principal A,une chambre de distribution (18) logée dans le corps (21) et destinée à recevoir le produit pulvérulent en entrée,un conduit de sortie (31) coaxial à l'axe principal et en communication avec la chambre de distribution (18) pour conduire le produit pulvérulent en sortie,une jonction entre la chambre de distribution (18) et le conduit de sortie (31) comportant un premier siège (3) coaxial à l'axe principal A,un coulisseau principal (1) monté coulissant dans le corps (21) selon l'axe principal A,de premiers moyens de manoeuvre (36, 37) pour manoeuvrer le coulisseau principal (1) entre une position d'ouverture, dans laquelle le passage entre la chambre de distribution (18) et le conduit de sortie (31) est ouvert, et une position de fermeture, dans laquelle une extrémité du coulisseau principal (1) est en appui contre le premier siège (3) pour fermer le passage entre la chambre de distribution (18) et le conduit de sortie (31),un coulisseau intérieur (4) monté coulissant dans le coulisseau principal (1) de manière coaxiale,un deuxième siège (6) concentrique et intérieur au premier siège (3),de deuxièmes moyens de manoeuvre (40, 41) du coulisseau intérieur (4) pour manoeuvrer le coulisseau intérieur (4), entre une position avancée, la plus proche du conduit de sortie (31) et une position reculée, la plus éloignée du conduit de sortie (31), une extrémité d'étanchéité du coulisseau intérieur (4) étant en contact avec le deuxième siège (6) lorsque, simultanément, le coulisseau principal (1) est en position de fermeture et le coulisseau intérieur (4) est en position avancée.
- Dispositif selon la revendication 1, caractérisé en ce que le coulisseau intérieur (4) comporte des moyens d'étanchéité (5) souples destinés à venir en appui contre le deuxième siège(6).
- Dispositif selon la revendication 1, caractérisé en ce qu'il comporte un système de butée réglable (45) pour positionner une butée (51, 151) définissant soit la position d'ouverture du coulisseau principal (1), soit la position de recul du coulisseau intérieur (104).
- Dispositif selon la revendication 1, caractérisé en ce que les premiers et les deuxièmes moyens de manoeuvre sont prévus pour que la position d'ouverture soit commandée en même temps que la position reculée, et que le coulisseau principal (1) passe en position de fermeture avant que le coulisseau intérieur (4) passe en position avancée.
- Dispositif selon la revendication 3, caractérisé en ce que les premiers moyens de manoeuvre comportentun cylindre principal (37) ménagé dans le corps (21) de manière coaxiale à l'axe principal A,un piston principal (36) du coulisseau principal (1) pour former un vérin principal avec le cylindre principal (37) en séparant le cylindre principal en une chambre d'ouverture (38) et une chambre de fermeture (39),un orifice d'ouverture (9) pour alimenter la chambre d'ouverture (38) avec un fluide et commander ainsi le passage du coulisseau principal (1) en position d'ouverture, etun orifice de fermeture (8) pour alimenter la chambre de fermeture (39) avec un fluide et commander ainsi le passage du coulisseau principal (1) en position de fermeture.
- Dispositif selon la revendication 5, caractérisé en ce que les deuxièmes moyens de manoeuvre comportent :un cylindre intérieur (41) ménagé dans le coulisseau principal (1) de manière coaxiale à l'axe principal A,un piston intérieur (40) du coulisseau intérieur (4) pour former un vérin intérieur avec le cylindre intérieur (41) en séparant le cylindre intérieur en une chambre de recul (42) et une chambre d'avancée (43), la chambre d'avancée (43) étant en communication avec la chambre de fermeture (39) , etun orifice de communication (14) ménagé dans le coulisseau principal (1) pour mettre en communication la chambre de recul (42) avec l'orifice d'ouverture (9) par l'intermédiaire de la chambre d'ouverture (38).
- Dispositif selon la revendication 6, caractérisé en ce qu'il comporte un ressort (27) logé dans la chambre de fermeture (39), le ressort (27) tendant à déplacer le coulisseau principal (1) vers la position de fermeture.
- Dispositif selon la revendication 3, caractérisé en ce qu'il comporte un pion (161) monté radialement dans le coulisseau principal (101) et faisant saillie dans un dégagement (162) du coulisseau intérieur (104), les bords du dégagement formant des butées pour limiter la course du coulisseau intérieur (104) par rapport au coulisseau principal (101).
- Dispositif selon la revendication 1, caractérisé en ce que le coulisseau intérieur (4) comporte un canal longitudinal (11) débouchant à l'extrémité d'étanchéité (44) pour amener de l'air de pulvérisation dans l'axe du conduit de sortie (31).
- Dispositif selon la revendication 9, caractérisé en ce que le corps (21) comporte une arrivée d'air (10) de pulvérisation, le canal longitudinal (11) débouche à l'autre extrémité du coulisseau intérieur (4), le dispositif comportant des moyens d'obturation (15, 48, 47) dont l'ouverture est commandée par le coulisseau intérieur (4) lorsque ledit coulisseau intérieur (4) est en position reculée, pour mettre en communication le canal longitudinal (11) et l'arrivée d'air de pulvérisation (10), de l'air de pulvérisation pouvant être conduit alors à travers le canal longitudinal (11).
- Dispositif selon la revendication 9, caractérisé en ce que le coulisseau intérieur (4) comporte un orifice radial (23) mettant en communication le canal longitudinal (11) et la chambre de recul (42) pour amener de l'air de pulvérisation dans le canal longitudinal (11) quand de l'air sous pression dans la chambre de recul (42) commande la position reculée.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0210266A FR2843599B1 (fr) | 2002-08-13 | 2002-08-13 | Dispositif etanche avec entree d'air interne ou externe de fluidisation pour pulveriser tout type de micros bille de verre sur des bandes de signalisation avec une machine de marquage des routes |
FR0210266 | 2002-08-13 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1389651A1 EP1389651A1 (fr) | 2004-02-18 |
EP1389651B1 true EP1389651B1 (fr) | 2005-06-01 |
Family
ID=30471099
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20030366005 Expired - Lifetime EP1389651B1 (fr) | 2002-08-13 | 2003-07-28 | Dispositif de pulvérisation de produit pulvérulent tel que des microbilles de verre |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1389651B1 (fr) |
DE (1) | DE60300758T2 (fr) |
FR (1) | FR2843599B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100984646B1 (ko) * | 2010-03-22 | 2010-10-01 | 주식회사 진산기계 | 비드분사조절기를 구비한 차선도포기 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2425557A (en) * | 2005-04-28 | 2006-11-01 | Prismo Ltd | Distributor device for retroreflective articles |
US7429146B2 (en) * | 2005-06-09 | 2008-09-30 | Potters Industries, Inc. | Highway marking sphere dispensing apparatus |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3967784A (en) * | 1975-05-16 | 1976-07-06 | Idaho Norland Corporation | Bead dispensing gun for marking pavement |
US5169262A (en) * | 1982-11-30 | 1992-12-08 | Road Construction Authority | Line marking apparatus |
-
2002
- 2002-08-13 FR FR0210266A patent/FR2843599B1/fr not_active Expired - Lifetime
-
2003
- 2003-07-28 DE DE2003600758 patent/DE60300758T2/de not_active Expired - Lifetime
- 2003-07-28 EP EP20030366005 patent/EP1389651B1/fr not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100984646B1 (ko) * | 2010-03-22 | 2010-10-01 | 주식회사 진산기계 | 비드분사조절기를 구비한 차선도포기 |
Also Published As
Publication number | Publication date |
---|---|
FR2843599A1 (fr) | 2004-02-20 |
DE60300758T2 (de) | 2006-03-23 |
EP1389651A1 (fr) | 2004-02-18 |
DE60300758D1 (de) | 2005-07-07 |
FR2843599B1 (fr) | 2004-10-01 |
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