Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B08—CLEANING
  • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
  • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
  • B08B3/006—Cabinets or cupboards specially adapted for cleaning articles by hand
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
  • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
  • B05B14/49—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths specially adapted for solvents
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
  • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
  • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
• • 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
  • B08—CLEANING
  • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
  • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
  • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
  • B08B9/027—Cleaning the internal surfaces; Removal of blockages
  • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B08—CLEANING
  • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
  • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
  • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
  • B08B9/027—Cleaning the internal surfaces; Removal of blockages
  • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
  • B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B44—DECORATIVE ARTS
  • B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
  • B44D3/00—Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
  • B44D3/006—Devices for cleaning paint-applying hand tools after use
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D83/00—Containers or packages with special means for dispensing contents
  • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
  • B65D83/38—Details of the container body
  • B65D83/384—Details of the container body comprising an aerosol container disposed in an outer shell or in an external container
  • B65D83/386—Details of the container body comprising an aerosol container disposed in an outer shell or in an external container actuation occurring by moving the aerosol container relative to the outer shell or external container
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D83/00—Containers or packages with special means for dispensing contents
  • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
  • B65D83/38—Details of the container body
  • B65D83/388—Details of the container body with means for suspending the aerosol container
• • 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
  • B05B7/02—Spray pistols; Apparatus for discharge
  • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
  • B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
  • B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
• • 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
  • B05B7/02—Spray pistols; Apparatus for discharge
  • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
  • B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
  • B05B7/0815—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter
• • 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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D83/00—Containers or packages with special means for dispensing contents
  • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant

Definitions

• the present invention relates to a cleaning device for a spray gun.
• Such cleaning machines are already known as illustrated in FR-2,903,332. These machines are currently being designed in the sense of reducing the number of operator operations, speed of cleaning, and simplification of the architecture of the machine.
• the objective is to allow an operator to be able, without disconnecting his gun from the cleaning device, to clean and then to dry the gun while simplifying the architecture of the device, in particular by limiting the length of the ducts and avoiding the passage of fluids of different types within the same conduit to facilitate subsequent cleaning of the device.
• An object of the present invention is therefore to provide an improved cleaning device whose design allows, with ducts of reduced length and dedicated to a single type of fluid, to carry out, for an operator, cleaning and then drying a gun without disconnecting the gun from said device.
• Another object of the present invention is to provide a cleaning device of the aforementioned type whose design allows to minimize the stagnation of liquid fluid in the ducts of the cleaning device.
• the subject of the invention is a cleaning device for a spray gun of the type having at least one fluid inlet to be sprayed, called a paint inlet, and a fluid outlet, said cleaning device comprising at least one frame support, a fluid supply head carried by said frame and means for discharging at least a portion of the fluid from said fluid supply head, said fluid supply head having at least one feed nozzle defining a conduit for connection to the paint inlet of the spray gun, characterized in that the cleaning device comprises at least two independent fluid supply ports of the nozzle of supply, said inputs each having a separate outlet in the conduit of said supply nozzle, said inputs being connectable one to a source of cleaning fluid, the other to a source of compressed air.
• the fluid supply inlets are arranged in the immediate vicinity of the feed nozzle and that they are distinct, one serving for supplying cleaning fluid to the nozzle for cleaning the gun, the other to the compressed air supply of the nozzle for drying said gun, the cleaning of the inputs and cleaning and drying ducts connectable to said inputs is facilit itati and the length of said ducts reduced.
• the supply nozzle is coupled to the frame of the device by means of at least one nozzle holder forming, in cooperation with the nozzle, the feed head of the device. cleaning, said nozzle holder having the shape of a tubular body of vertical axis, equipped at its lower end with the supply nozzle and the fluid supply inlets of said nozzle and open at its upper end to form an opening for introducing a source of cleaning fluid, such as an aerosol container, into said nozzle holder, said aerosol container being adapted to be introduced by its diffuser, that is to say head downwards, inside the nozzle holder until the diffuser comes to fit at least partially inside the inlet of cleaning fluid supply of the feed nozzle opening in the conduit of said feed nozzle.
• a source of cleaning fluid such as an aerosol container
• This arrangement makes it possible to dispense with a pump at the level of the cleaning device and to easily adapt the characteristics of the cleaning fluid to depending on the nature of the fluid to be sprayed.
• the feed nozzle is mounted movably relative to the support frame in the direction of a connection or a spacing of the device of the evacuation means.
• Such a device can thus be adapted to guns of variable characteristic.
• each fluid supply inlet of the supply nozzle is an axial outlet with an axis parallel to the longitudinal axis of the duct of the supply nozzle.
• This arrangement makes it possible to facilitate the flow of fluid into the nozzle and makes it possible to produce an axial fluid supply inlet in which the risks of stagnation of liquid are reduced or even zero.
• the evacuation means of the cleaning device comprise at least one fluid receiving member intended to be connected at the inlet to the fluid outlet of the gun.
• the supply nozzle and said receiving member are positioned relative to each other so as to be able to be connected at the same time respectively to said spray gun paint inlet and to the outlet of the spray gun .
• the operator can, without disconnecting the gun from the cleaning device, proceed to the supply of cleaning fluid, the emptying and drying of the gun.
• the output of the spray gun to be cleaned comprises at least one axial outlet of fluid to be sprayed and at least one, preferably a plurality of, preferably radial, outlet (s). (s), called (s) output (s) of gas under pressure, serving for example to adjust the shape of the fluid flow from the axial outlet
• said receiving member comprises on the one hand at least one receiving nozzle, preferably of cylindro-conical shape, connected, at the outlet, to means for collecting the flow of sprayed and connectable fluid, at the inlet, with the axial outlet of the fluid stream to be sprayed from the gun, on the other hand at least one inlet gas outlet duct connectable with the at least one gas outlet of said gun and opening out in an area, called evacuation zone gases distinct from the collection means of the sprayed fluid stream.
• said receiving member comprises, in addition to the receiving nozzle intended to cooperate with the axial outlet of the spray gun, a ring surrounding said nozzle, the inlet of the at least one gas discharge duct being provided between the ring and receiving nozzle.
• annular seal with a convex outer circumferential surface is housed inside said ring.
• the seal housed inside the ring, is loaded by a spring and is biased in the bearing position against an inner peripheral circumferential shoulder of the ring.
• the gas evacuation zone is formed by the ambient air surrounding said cleaning device so that the end of the exhaust duct separate from the fluid flow collection means opens out into the open air.
• the gas evacuation zone being formed by the ambient air surrounding the cleaning device, the support frame comprises, in its so-called rear zone opposite its front opening, at least one, preferably a plurality of openings corresponding to the outlet. in the open air of the exhaust ducts or gases.
• the user is not hindered by the vapors of the cleaning products and the volume of cleaning fluid to be treated is reduced.
• Figure 1 shows a partial sectional view of the fluid supply head taken at the feed nozzle, the cleaning source being formed by an aerosol container;
• Figure 2 shows a sectional view of the feed head, the cleaning source being formed by an aerosol container
• Fig. 3 is a schematic sectional view of the feed head and a partial view of the frame in the connected state from the feed nozzle of the head to the spray gun paint inlet;
• Figure 4 shows a partial schematic sectional view of the cleaning device
• Fig. 5 is a partial schematic sectional view of the connected-state cleaning device of the device nozzles at the inlet and outlet of a spray gun;
• Figure 6 shows a view similar to Figure 5 for a gun with different dimensional characteristics
• Figure 7 shows a detail sectional view of the receiving member
• Figure 8 shows a partial sectional detail view of the receiving member in the state connected to the output of a gun.
• the cleaning device which is the subject of the invention, comprises a support frame delimiting a cleaning volume 22, such as a enclosure, adapted to receive at least partially a spray gun to be cleaned.
• This support frame 2 carries a fluid supply head 3 comprising at least one feed nozzle 5 intended to be connected to the paint inlet 27 of the spray gun to be cleaned.
• This cleaning device also comprises means 4 for discharging at least a portion of the fluid from the fluid supply head 3.
• the cleaning device is for cleaning spray guns.
• a spray gun 26 can be placed partially in the volume 22.
• the spray gun 26 comprises in particular an inlet 27 for the fluid to be sprayed, called the paint inlet 27, an internal pipe and an outlet 28 of fluid, the inner conduit extending between the inlet 27 and the outlet 28 of fluid.
• Such a gun also has an air inlet 31 connectable to a source of compressed air supply.
• This inlet 31 of air allows, in particular, to help the fluid to flow from the paint inlet 27 to the fluid outlet 28 and to be ejected from said gun during actuation of the gun trigger.
• This air inlet 31 also serves to supply a gas outlet 30 of the gun for adjusting the shape of the fluid flow.
• the outlet 28 of the spray gun to be cleaned comprises at least one axial outlet 29 of spray fluid formed of a gas-liquid mixture, and at least one, preferably a plurality of outlets 30, preferably radial said pressurized gas outlets for adjusting the shape of the fluid flow from the axial outlet.
• the gas outlets 30 are disposed around the axial outlet 29.
• a paint bucket (not shown) is connected to the paint inlet 27.
• the paint passes into the inner duct and exits through the outlet 28, in particular through the axial outlet 29 of spray fluid from the outlet 28.
• the spray gun 26 is connected to the cleaning device 1, as shown in Figure 5. Specifically, the paint bucket is removed and the paint inlet 27 is connected to the nozzle 5 for feeding the feed head 3. Then, the feed head 3 can be controlled to circulate cleaner.
• the cleaning device 1 comprises at least two independent fluid supply inlets 6, 7 of the supply nozzle 5.
• Said inlets 6, 7 each have a separate outlet 6A, 7A in the duct of said supply nozzle, said inlets 6, 7 being connectable to one, to a source of cleaning fluid, the other 7 to a source of compressed air.
• the cleaning fluid feeds the inlet nozzle 6 via the inlet 6 and passes successively through the inlet 27 of FIG. paint, the inner conduit, the outlet 28 of the gun, in particular by the axial outlet 29 of the outlet 28.
• compressed air supplies, through the inlet 7, the nozzle 5 and passes successively through the paint inlet 27, the inner conduit, the outlet 28 of the gun, in particular the axial outlet 29 of the outlet 28 of the gun. This drying makes it possible to evacuate the cleaning product remaining in the internal conduit of the gun between inlet 27 and outlet 28 of said gun.
• the frame 2 has the shape of a column provided with a front opening through which the gun is introduced inside the column in the cleaning volume 22.
• This cleaning volume 22 is delimited at least by the peripheral wall of the frame.
• the feed head 3 is disposed at or near the top of the frame and therefore extends substantially above the pistol in the introduced state of the gun in the cleaning volume 22.
• the cleaning device also comprises means 4 for evacuating at least a portion of the fluid coming from the fluid supply head 3 cleaning.
• the means 4 for discharging the cleaning device comprise at least one fluid receiving member 14 intended to be connected at the inlet to the fluid outlet of the gun 26.
• the peripheral wall of the frame door on its side facing the interior of the frame, the receiving member 14 which is housed inside the volume 22 cleaning. This receiving member 14 extends substantially opposite the front opening of the frame.
• the supply nozzle and said receiving member 14 are positioned relative to one another so as to be able to be connected at the same time respectively to said paint spray gun entry port 27 and at the outlet 28 of the spray gun.
• said receiving member 14 comprises at least one receiving nozzle 15, preferably of cylindro-conical shape, said receiving nozzle 15 being connected, at the outlet, to means 16 for collecting the flow of sprayed and connectable fluid. at the inlet, with the axial outlet 29 of spray fluid from the gun.
• This input connection makes it possible to orient the flow of fluid towards said collection means 16.
• Said receiving nozzle 15 is, in the state connected with said axial outlet 29, able to prevent any action of the gas coming from the gas outlets 30 on the fluid flow coming from the axial outlet.
• the receiving member 14 comprises, in addition to the at least one receiving nozzle 15 connected, at the outlet, to means 16 for collecting the flow of sprayed and connectable fluid, at the inlet, with the axial outlet 29 of the flow of fluid to be sprayed. of the gun, at least one gas discharge duct 17 connectable at the inlet with the at least one gas outlet 30 of said gun and opening out in an area called gas evacuation zone distinct from the means 16 for collecting the flow of gas. sprayed fluid to evacuate the gun's gases into an evacuation zone.
• This receiving member 14 also comprises, in addition to the receiving nozzle 15 intended to cooperate with the axial outlet 29 of the spray gun and the discharge pipe 17, a ring 18 surrounding said nozzle 15, in particular the frustoconical part of said nozzle 15, the inlet of the at least one evacuation pipe 17 being formed between ring 18 and receiving nozzle 15.
• An annular seal 19 having a convex outer circumferential surface is housed inside said ring 18.
• Said at least one gas evacuation conduit 17 has an inlet formed in the volume formed by the space left free between the ring 18 and the receiving nozzle 15, in particular the frustoconical portion of said nozzle 15, and an opposite end or outlet that opens into the gas evacuation zone.
• the gas evacuation zone is formed by the ambient air surrounding the cleaning device so that the at least one gas evacuation duct opens in the open air.
• the frame 2 support comprises, in its so-called rear zone, opposite to its front opening, at least one, preferably a plurality of openings corresponding to the outlet to the open air of the exhaust ducts or gases .
• the seal 19, housed inside the ring 18, is loaded by a spring 20 and is biased into a bearing position against an inner peripheral circumferential shoulder 21 of the ring 18.
• this seal 19 surrounds the gun barrel with sealing contact and prevents the air exiting from the end of the barrel of the gun by the gas outlets 30 to escape out of the volume delimited by the ring 18, the nozzle 15 and said seal 19 and forming the inlet of the at least one discharge conduit 17.
• the convex outer peripheral surface of the gasket 19 allows said gasket to be swiveled inside the housing formed by the ring when the gun barrel is introduced inside the gasket until the end of the gun barrel comes into position.
• this nozzle end is preferably made of an elastically deformable material.
• the radial outlet 30 gun barrel gas flows into the volume extending between the ring 18, the seal 19 and the nozzle 15 receiving and wherein is formed the inlet of the conduit 17 gas discharge.
• the seal 19 seals with the barrel of the gun, the clean air is forced to evacuate through the conduit 17 for evacuation of gas and is brought into the atmosphere so that the volume of fluid to be treated collected in the collection means is less than in the state of the art.
• said receiving member 14 comprises a plurality of gas discharge ducts 17, said ducts being disposed equidistant from the axis of the receiving nozzle 15.
• the entrances of the gas discharge ducts 17 in the space between the ring 18 and the receiving nozzle 15 are arranged on a center circle located on the central axis of the receiving nozzle. This increases the possibilities of evacuation of gases in the atmosphere.
• the receiving nozzle has a cylindro-conical shape. This makes it possible to connect the receiving nozzle 15 to guns having paint outlets of different diameters.
• the cleaning product leaves the feed head 3 and passes successively through the feed nozzle 5, the inlet
• the cleaning product thus flows in a closed circuit from the feed head 3 to the collection means 16.
• the inlet head 3 can be controlled to pass air under pressure in the closed circuit mentioned above to dry the spray gun and more specifically to evacuate the cleaning product remaining in the internal conduit.
• the means 16 for collecting the cleaning fluid to be treated are here formed of a duct connected to the outlet of the receiving nozzle 15 and a tank supplied with cleaning fluid to be treated by said duct. This reservoir is a tank housed in a generally removable manner in the base of the support frame to be emptied.
• the device further comprises fluid evacuation means 4 disposed in the lower part of the cleaning volume 22 of the support frame.
• this cleaning volume 22 is delimited at least by the peripheral wall of the frame and by an inclined lower wall delimiting a bowl inside the frame to guide a flow to a conduit 23 drain which opens into the conduit d supply of the reservoir of the collection means.
• the bottom wall and the drain duct allow recovery to the product reservoir. cleaning to treat.
• the feed nozzle 5 is mounted movably relative to the support frame 2 in the direction of bringing the device 4 to evacuate or move away from the device.
• the feed nozzle 5 is driven up and down between a high position remote from the evacuation means 4 and a low position close to said evacuation means 4, said lower position being an adjustable position. function at least of the dimensional characteristics of the spray gun to be cleaned.
• adjusting the level of the nozzle 5 supply allows to vary its relative position relative to the receiving member 14 and therefore to adapt to guns of different characteristics as illustrated FIGS. 5 and 6, said guns being able to differ in the dimensions of the paint inlet, the dimensions of the outlet, the distance and relative orientation between the paint entry and the gun exit.
• the feed head 3 is in turn shown in more detail in Figures 1 and 2.
• the supply nozzle 5 is coupled to the frame 2 of the cleaning device 1 at least by a nozzle holder 8 forming, in cooperation with the nozzle 5, the feed head 3 of the cleaning device.
• the nozzle holder 8 has the shape of a vertical axis tubular body equipped at its lower end with the feed nozzle and open at its upper end to form an opening for introducing a source of fluid. cleaning device, such as an aerosol container, inside said nozzle holder 8.
• the aerosol container 24 is adapted to be introduced by its diffuser 25, that is to say, upside down, inside. of the nozzle holder 8 until the diffuser 25 comes to fit at least partially inside the inlet 6 for supplying cleaning fluid to the feed nozzle 5 opening into the conduit of the nozzle 5 power supply.
• This inlet 6 is formed by a stepped through duct formed in the bottom 9 of the constituent body of the nozzle holder.
• This nozzle holder 8 comprises, in addition to this through conduit housing of the aerosol container diffuser 25, communicating with the supply nozzle 5, an air inlet circuit portion connectable at one end to a power supply source. compressed air and opening at its opposite end in said feed nozzle forming an air inlet 7 in said nozzle separate from the cleaning fluid supply inlet 6.
• Outlet 6A, 7A of each inlet 6, 7 for supplying fluid to the supply nozzle 5 is an axial outlet with an axis parallel to the longitudinal axis of the duct 5 of the supply nozzle.
• the air inlets 7 and the cleaning fluid inlet 6 in the supply nozzle 5 are thus axial inlets disposed on the large base side of the cone of the frustoconical feed nozzle 5 so as to facilitate the flow of the fluids to the inside the nozzle.
• the nozzle holder 8 is mounted on said frame, slidably movable in a direction parallel to the longitudinal axis of the tubular body constituting the nozzle holder.
• nozzle holder 8 and frame 2 are equipped with means such as rails, slides, rolling members, pads or others for sliding mounting of the nozzle holder on said frame.
• the nozzle holder comprises a cylindrical wall which defines an upwardly open housing for the introduction of the aerosol container into said housing.
• the bottom of the housing is closed by a bottom wall 9 which has a through duct shouldered preferably central.
• This conduit opens into the channel of the feed nozzle 5 and is substantially aligned with it.
• This conduit forms the inlet 6 for supplying cleaning fluid to the nozzle 5.
• the air inlet 7 is also formed in the bottom wall of the nozzle holder 8 and opens into the feed nozzle via axial passages.
• This air inlet is formed of a radial air inlet duct to the nozzle holder and connected to a source 33 of compressed air.
• This conduit opens into an annular volume disposed around the inlet 6 for supplying cleaning fluid to the nozzle.
• This annular volume is provided with axial passages aligned with the conduit of the feed nozzle.
• These axial passages form the outlet 7A of the inlet 7 of a ir in the nozzle 5.
• the feed head 3 also comprises radial handles 13, one of which is shown, which are attached to the wall cyl indrique of the nozzle holder 8 and allow the displacement of the feed head 3. It can be seen that the feed nozzle 5 has a frustoconical shape. This makes it possible to connect the feed nozzle to guns having paint entries of different diameters.
• An aerosol container 24 is arranged in the housing formed in the nozzle holder 8, upside down.
• the aerosol container 24 comprises a bottom, possibly a dip tube and a diffuser 25. Cleaner and propellant Under pressure are contained in the container 24.
• the diffuser 25 is arranged in abutment in the conduit through the bottom wall of the nozzle holder.
• the aerosol container 24 can slide in the housing. Thus, if a user presses on the bottom of the container 24, the container 24 approaches the diffuser 25, which causes the opening of a valve (not shown) of the aerosol container 24. The cleaning product contained in the container 25 is then expelled and passes into the diffuser 25, the inlet 6 and the feed nozzle 5.
• the aerosol container 24 can be easily placed in the housing, and easily replaced when empty. In addition, a mixture of cleaner and propellant is expelled. Thus, by choosing the cleaning product and the shape of the diffuser appropriately, it is possible to expel the cleaning product in the form of foam and to improve the cleaning ability.
• the feed head 3 can have a simple structure so that it is not necessary to provide a pump or a valve for cleaner.
• the cleaning device could comprise a cleaner pump or be connected to the dispensing water as a cleaning product.
• the gun is positioned on the receiving member.
• the feed head 3 and thus the nozzle 5 are lowered to a position of connection with the paint inlet of the gun.
• the aerosol container is pressed until the gun inlet is filled.
• the gun is drained by pressing the gun trigger.
• the operations of pressing the aerosol container and draining are repeated as many times as necessary.
• the gun is dried by sending compressed air through the paint inlet of said gun. We go back the head 3 and the associated nozzle 5.
• the gun is extracted from the cleaning zone 22. ⁇

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Dispersion Chemistry (AREA)
• Nozzles (AREA)
• Details Or Accessories Of Spraying Plant Or Apparatus (AREA)

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