EP0443421B1 - Dispositif pour nettoyer des pistolets de peinture commandés à la main - Google Patents
Dispositif pour nettoyer des pistolets de peinture commandés à la main Download PDFInfo
- Publication number
- EP0443421B1 EP0443421B1 EP91101977A EP91101977A EP0443421B1 EP 0443421 B1 EP0443421 B1 EP 0443421B1 EP 91101977 A EP91101977 A EP 91101977A EP 91101977 A EP91101977 A EP 91101977A EP 0443421 B1 EP0443421 B1 EP 0443421B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- solvent
- spray gun
- cleaning
- space
- nozzle
- 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
Links
- 238000004140 cleaning Methods 0.000 title claims description 82
- 239000007921 spray Substances 0.000 title claims description 63
- 239000002904 solvent Substances 0.000 claims description 81
- 238000004064 recycling Methods 0.000 claims description 8
- 238000010422 painting Methods 0.000 claims description 4
- 239000000356 contaminant Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000004062 sedimentation Methods 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims 1
- 238000012216 screening Methods 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 239000003973 paint Substances 0.000 description 9
- 206010003830 Automatism Diseases 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000000266 injurious effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- 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
- B05B15/555—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 discharged by cleaning nozzles
-
- 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
Definitions
- the present invention relates to a device for cleaning hand operated spray guns, preferably hand operated spray guns used for painting vehicles in repair shops, whereby said device includes a sealable space with holders permitting positioning of preferably one spray gun at a time in such a way relative to nozzles that said nozzles can spray solvent onto and into said spray gun for cleaning thereof, and whereby said nozzles are provided for automatic cleaning of the spray gun.
- the object of the present invention is to eliminate these problems and provide a substantially improved cleaning device. This is arrived at according to the invention by means of the characterizing features of claim 1.
- the pressurized-air system is adapted, when required, to feed solvent by means of pressurized air through a nozzle for manual cleaning, automatic as well as manual cleaning may be carried out with the one and same device.
- the cleaning device 1 illustrated in the figures is adapted for cleaning hand operated spray guns 2 or 3, preferably spray guns for painting vehicles in repair shops. Accessories to spray guns 2 or 3 and eventually other painting equipment such as brushes, tins, screens, gauge rods, etc., may also be cleaned in the cleaning device 1.
- the cleaning device 1 comprises a frame 4 with a base 5 and a lower space 6 for a tank 7 for clean solvent. A collecting space 8 is provided above the lower space 6 and above said collecting space a cleaning space 9 adapted for carrying out an automatic process for cleaning the spray gun 2 or 3.
- the cleaning space 9 is sealable by means of a door 10 which is situated in a half-open hood 11 wherein manual cleaning of the spray gun 2 or 3 may occur and which is connected to a pipe 12 in a ventilating device 77 (see fig. 10) for extraction of injurious gases from the hood 11.
- the cleaning device 1 For cleaning the spray gun 2 or 3 in the cleaning space, the cleaning device 1 includes a pressurized-air system 13 and a solvent system 14 (see fig. 4).
- the pressurized-air system 13 is through a pressurized-air conduit 15 connectable to a pressurized-air outlet (not shown) and in said conduit 15 there is provided a main valve 16 which opens when the cleaning device is set in operating condition.
- the pressurized-air system 13 includes a pressurized-air conduit 15a through which pressurized air 17 flows to a regulator 18. From said regulator 18, pressurized air 17 flows through a pressurized-air conduit 19 and a branch conduit 19a to a first time valve 20 and through a branch conduit 19b to a second time valve 21. From the first time valve 20, the pressurized air may flow through a pressurized-air conduit 22 to branch conduits 22a and therefrom to ejectors 23 for recycled solvent (see fig. 6).
- pressurized air may flow through the pressurized-air conduit 25 to a block valve 26 and if this valve is open, through a pressurized-air conduit 27 to branch conduits 27a and therefrom to ejectors 24 for clean solvent.
- the pressurized-air system 13 is controlled by a time settable control device 28.
- This control device is through a conduit 29 connected with the pressurized-air system 13 and said conduit 29 has a valve 31a which is closed at rest but openable by means of a foot pedal 31b.
- a valve 31a which is closed at rest but openable by means of a foot pedal 31b.
- pressurized air can flow through a branch conduit 29a to a pressure chamber 21a in the time valve 21.
- a check valve 30 see fig. 7 which lets through pressurized air to the time valve 20 via apertures 31 in a membrane-like valve body 32 when said valve body moves from its seat 33.
- a return spring 34 closes the check valve 30 such that the pressure chamber 20a in the time valve 20 can not communicate with the pressure chamber 21a in the time valve 21.
- a pressurized-air conduit 38 to the block valve 26 (see fig. 8) is put under pressure, the valve body 39 and spring 40 of said valve 26 being designed such that the valve body 39 engages a seat 41 and keeps the block valve 26 closed when the pressures in the conduits 38 and 25 are equal.
- the block valve 26 prevents pressurized air from flowing from the pressurized-air conduit 25 to the pressurized-air conduit 27.
- valve body 39 and spring 40 are also designed such that pressurized air in the conduit 25 is able to open the block valve 26 when the pressure in the conduit 38 ceases.
- this block valve 26 it is obtained that as long as the supply of pressurized air through the time valve 20 to the ejectors 23 for contaminated (used) solvent is open, the supply of pressurized air through the time valve 21 to the ejectors 24 for clean solvent is closed.
- the pressure chambers 20a, 21a in the time valves 20, 21 include capillary tubes 42 through which pressurized air slowly may leak out into the surroundings for obtaining atmospheric pressure in each pressure chamber 20a, 21a and thereby enable closing of the seat valve 36 by means of a return spring in cooperation with the pressure reduction across said seat valve.
- the capillary tubes 42 of the time valves 20, 21 are differently dimensioned such that the time valve 20 is open preferably for a shorter time (e.g. about 2 minutes) than the time valve 21 (which is open e.g. about 3 minutes).
- the opening time of the seat valve 36 is dependent on the length and/or through-flow area of the capillary tube 42, and this time can be determined by providing a capillary tube 42 of a certain length and/or through-flow area and changed by replacing this tube by another capillary tube 42 of different length and/or through-flow area.
- the control device 28 further includes a manometer 43, which through a conduit 44 is connected with the pressurized-air conduit 25 of the pressurized-air system 13.
- This manometer 43 is adapted to indicate when the cleaning automatism is in operation and it permits control of the air pressure in the pressurized-air system.
- the supply of pressurized air to the pressurized-air system 13 should be such that the manometer 43 shows a pressure of 5-6 bars.
- a relief valve 45 which is controlled by a magnetic body 46 located in the door 10.
- the relief valve 45 operates such that the magnetic body 46 draws a valve ball (not shown) from its seat when the door 10 is closed, which means that the relief valve 45 is kept open when the door 10 is closed.
- the magnetic body 46 is moved such that it can not retain the valve ball, but said valve is by the pressurized air brought into engagement with its seat, whereby the relief valve 45 is closed.
- the solvent system 14 includes a collecting and recycling device 47 for collecting used solvent 48 and for recycling thereof.
- the collecting space 8 for used solvent 48 forms part of the collecting and recycling device 47 and at least one suction hose 49 for feeding used solvent 48 to a suction opening 49a in the ejector 23 (see fig. 6) is inserted into said used solvent 48.
- the ejector 23 operates in a known manner, i.e. when pressurized air through the branch conduit 22a is fed through its nozzle to its venturi tube, used solvent 48 is due to the venturi effect drawn through the suction opening 49a into the flow of pressurized air and the pressurized air 50 containing used solvent 48 is discharged through at least one nozzle 51 for cleaning the spray gun 2 or 3.
- Each nozzle 51 preferably consists of a unit in which the ejector 23 for used solvent 48 as well as the ejector 24 for clean solvent 53 are included. Passages for discharging used and clean solvent 48 and 53 respectively, and forming part of said unit, extend preferably in parallel to each other.
- the solvent system 14 also includes a feed device 52 for feeding clean solvent 53 from the tank 7 to the ejector 24.
- a feed device 52 for feeding clean solvent 53 from the tank 7 to the ejector 24.
- at least one suction conduit 54 is inserted into the tank 7 and said suction conduit is adapted to feed clean solvent to a suction opening 55 in the ejector 24 (see fig. 6).
- the ejector 24 also operates in a known manner, i.e. when pressurized air through the branch conduit 27a is fed through its nozzle to its venturi tube, clean solvent is due to the venturi effect drawn through the suction opening 55 into the flow of pressurized air, and the pressurized air 56 containing clean solvent 53 is discharged through the nozzle 51 (or a separate nozzle when required) for cleaning the spray gun 2 or 3.
- the pressurized-air system 13 further includes a pressurized-air conduit 57 to an ejector (not shown) in a nozzle 58 for manual cleaning of the spray gun 2 or 3 and there is preferably provided in said conduit 57 a valve 59 which is operated by means of a foot pedal 60.
- a suction conduit 61 is preferably connected with the ejector in the nozzle 58 and clean solvent is suck through this conduit from the tank 7 to the ejector for discharging pressurized air containing clean solvent 53 through the nozzle 58.
- the nozzle 58 for manual cleaning of the spray gun 2 or 3 is preferably located in an upper space above the sealable space 9 and said nozzle 58 is preferably directed downwards towards said sealable space 9.
- the upper space with the nozzle 58 may be defined by the half-open hood 11 (see fig. 1) and said space may communicate with the ventilating device 77 for ventilation thereof.
- the nozzle 58 can preferably be provided in the sealable space 9 in such a way that the nozzle 58 is accessible when said sealable space 9 is opened.
- the nozzle 58 can be located on the underside of a lid 78 which is pivotally mounted either for closing the sealable space 9 or for being set in an upwardly directed position U such that the sealable space 9 is open in an upwards direction.
- the nozzle 58 is preferably mounted such that it directs its jets of pressurized air containing solvent in a downward direction towards the sealable space 9 when the lid 78 is set in said upwardly directed position U.
- the lid 78 preferably includes a screen 79 which screens the nozzle 58 in upwards direction and preferably also in sideways directions, whereby dispersion of unhealthy gases is obstructed.
- the nozzle 58 is preferably located on the lid 78, but may alternatively be mounted on the screen 79 or on the lid 78 as well as on the screen 79.
- a branch conduit 62 extends from the pressurized-air conduit 57 to an extraction device operated by pressurized air for sucking out or extracting injurious gases from the hood 11.
- the cleaning space 9 is provided with a yoke 63 on which the spray gun 2 or 3 can be placed, with another yoke 64 for the paint container 65 for the spray gun (the so called cup) and a yoke 66 for the cap 67 to the paint container 65.
- the cleaning space 9 is also provided with a suitable number of nozzles 51 (here at least eight nozzles) for cleaning the spray gun interiorly and externally and for cleaning the various parts of the spray gun.
- nozzles 51 here at least eight nozzles
- it can be provided with a so called extension tube 68 which is moved a distance into one of the nozzles 51 (see fig. 2).
- the pressurized air containing solvent can pass through the paint passages of the spray gun during cleaning thereof and then out through the paint discharge nozzle 70 of said spray gun.
- the spray gun 2 or 3 is placed lying down in the cleaning space 9 with its paint discharge nozzle 70 situated in front of another nozzle 51 which is adapted to direct pressurized air containing solvent towards the exterior of the paint discharge nozzle 70 for cleaning thereof.
- the pressurized air containing solvent and discharged by the nozzles 51 defines a turbulent cloud or mist of solvent in the cleaning space 9, whereby all exterior surfaces of the spray gun 2 or 3 or parts thereof are reached by the solvent.
- Fig. 3 shows that a spray gun 3 with an underlying paint container 65 can also be cleaned in the cleaning space 9. Since such a spray gun 3 has a suction tube 68a, said gun is connected by inserting the end portion of said suction tube into one of the nozzles 51. The spray gun 3 is placed lying down on the yoke 63 and the paint container 65 is put in the yoke 64.
- the collecting and recycling device 47 for collecting and recycling solvent includes a sedimentation device 71 situated in the collecting space 8 and having guide means 72 in the shape of a screen like insert (see fig. 9) which is closed on top and open at the bottom.
- the guide means 72 has a somewhat smaller outer dimension than the inner dimension of the collecting space 8 in order to define a narrow gap 73 therearound. Used solvent 48 flowing down from the cleaning space 9 is guided outwardly towards the gap 73 by the guide means 72, flows into said gap and then slowly inwards beneath inwardly directed portions 74 of the guide means 72, whereby contaminants 75 in the solvent fall to the bottom region 76 of the collecting space 8.
- the suction hose 49 (or suction hoses) of the solvent system 14 is provided to open above the inwardly directed portions 74. It is hereby prevented that the suction hose 49 can reach down into the bottom region 76 and contaminants 75 included therein. Instead, it is ensured that the suction hose 49 sucks solvent from the area above the bottom region 76.
- the ventilating device 77 is adapted to ventilate the sealable space 9 during and/or after the cleaning operation. If there is also an upper space to be ventilated, this can be done by means of said ventilating device 72 or by means of another ventilating device.
- the embodiment of fig. 10 of the ventilating device 77 includes a suction passage 80 through which the sealable space 9 communicates with the tube 12.
- this suction passage 80 there is preferably provided a filter 81 through which air containing solvent flows to the tube 12.
- This filter 81 is designed such that it separates solvent from the air flowing therethrough and it is mounted such that the separated solvent can flow back down into the sealed space 9.
- the upper space within the hood 11 is also connected with the tube 12 which in turn is connected with a fan aggregate 82 for generating sufficient air flows in the ventilating device 77 for effective ventilation of the sealed space 9 and the upper space, such that persons working at the cleaning device 1 are not subjected to injurious gases.
- the cleaning device 1 is operated as follows:
- the door 10 to the cleaning space 9 is opened and e.g. 10-15 l of solvent, preferably thinner, is poured directly into said cleaning space 9.
- a tank 7 with e.g. 10 l of clean solvent 53, preferably thinner, is placed in the frame 4 and connected with the solvent system 14.
- the hand operated spray gun 2 or 3 to be cleaned, is arranged in a suitable manner in the cleaning space 9.
- the door 10 Before the cleaning automatism is started, the door 10 must be closed and then the valve 16 for the pressurized air 17 is opened.
- the cleaning automatism is started by pressing the foot pedal 31b to open the valve 31a. On the manometer 43 one can read if the cleaning automatism is operating and if the air pressure is correct. During a cleaning cycle of e.g. 3 minutes, cleaning with used solvent 48 may occur for about 2 minutes (pre-wash) and then with clean solvent 53 for about 1 minute (after-wash). When the washing cycle is finished, the pressure in the pressurized-air system 13 drops and ceases to exist when the pressurized air is cut off with the valve 16.
- this cleaning may be carried out manually by means of the nozzle 58.
- This manual cleaning is started by opening the valve 51 by means of the foot pedal 60. It is also possible to clean only the spray gun 2 or 3 or any part thereof manually by means of the nozzle 58.
- cleaning may eventually occur only with recycled solvent or only with clean solvent.
- the cleaning process may be carried out only automatically or only manually and the time periods in a cleaning cycle can be adapted to the existing requirements.
- the spray guns and/or parts thereof may be arranged in other ways than described and the device may be used for other types of hand operated spray guns than the spray guns shown and for other accessories thereto.
- the cleaning device can be designed in other ways than shown and described; the nozzles can e.g. be designed and located differently. There can be more than one nozzle 58 for manual cleaning and this or these nozzles can be located in other ways than shown. Finally, it should be noted that other solvents than thinner can be used for cleaning with the device according to the invention.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
- Nozzles (AREA)
Claims (15)
- Dispositif pour nettoyer des pistolets de pulvérisation actionnés à la main, avantageusement des pistolets de pulvérisation actionnés à la main utilisés pour peindre des véhicules dans les ateliers de réparation, ledit dispositif comprenant un espace pouvant être fermé hermétiquement (9) comportant des supports (63 et/ou 68) permettant le positionnement d'avantageusement un pistolet de pulvérisation (2 ou 3) à la fois de telle façon' par rapport à des buses (51) que lesdits buses puissent pulvériser du solvant (48 ou 53) sur et dans ledit pistolet de pulvérisation (2 ou 3) pour le nettoyer, et lesdites buses (51) étant équipées pour le nettoyage automatique du pistolet de pulvérisation (2 ou 3), caractérisé en ce qu'un système à air pressurisé (13) est prévu pour pulvériser du solvant (48 ou 53) au moyen d'air pressurisé (17) et sans utiliser de dispositifs à pompage de liquide prévus à cet effet, sur et dans le pistolet de pulvérisation (2 ou 3) à travers lesdites buses (51) pour le nettoyage automatique dudit pistolet de pulvérisation, et en ce que le système à air pressurisé (13), lorsque c'est nécessaire, est aussi équipé pour permettre la pulvérisation de solvant (48 ou 53) sur le pistolet de pulvérisation au moyen d'au moins une autre buse (58) pour le nettoyage manuel dudit pistolet de pulvérisation.
- Dispositif selon la revendication 1, caractérisé en ce que le dispositif permet la récupération du solvant usagé (48) et son recyclage pour le nettoyage du pistolet de pulvérisation (2 ou 3) avec du solvant recyclé (48) et permet la fourniture de solvant propre (53) pour le nettoyage ultérieur du pistolet de pulvérisation (2 ou 3) à l'aide de ce solvant.
- Dispositif selon la revendication 1 ou 2, caractérisé en ce que des buses (51) pour le nettoyage automatique du pistolet de pulvérisation (2 ou 3) éjectent du solvant (48 ou 53) de telle façon dans l'espace (9) qu'un nuage turbulent se forme, constitué de solvant en suspension dans autour du pistolet de pulvérisation (2 ou 3), de sorte que le solvant (48 ou 53) peut se déposer sur les surfaces du pistolet de pulvérisation situées à l'opposé desdites buses (51).
- Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que l'espace (9) est relié à un dispositif de ventilation (77) qui est prévu pour ventiler ledit espace (9) pendant et/ou après le processus de nettoyage.
- Dispositif selon la revendication 4, caractérisé en ce que le dispositif de ventilation (77) comprend un filtre (81) pour séparer le solvant (48 ou 53) de l'air qui s'écoule au travers et en ce que le filtre (81) est avantageusement équipé de sorte que le solvant (48 ou 53) qui y est séparé ou une partie de celui-ci puisse retourner dans l'espace (9).
- Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la buse (58) pour le nettoyage manuel du pistolet de pulvérisation (2 ou 3) est disposée dans un espace supérieur situé au-dessus de l'espace pouvant être fermé hermétiquement (9), ladite buse (58) étant avantageusement dirigée vers le bas en direction de l'espace pouvant être fermé hermétiquement (9).
- Dispositif selon la revendication 6, caractérisé en ce que l'espace supérieur contenant la buse (58) pour le nettoyage manuel du pistolet de pulvérisation (2 ou 3) est délimité par une hotte à demi ouverte (11) et en ce que ledit espace supérieur est relié à un dispositif de ventilation (77) pour la ventilation dudit espace.
- Dispositif selon l'une quelconque des revendication 1 à 5, caractérisé en ce que la buse (58) pour le nettoyage manuel du pistolet de pulvérisation (2 ou 3) est située dans l'espace pouvant être fermé hermétiquement (9) de telle façon que ladite buse devient accessible quand l'espace pouvant être fermé hermétiquement (9) est ouvert.
- Dispositif selon l'une quelconque des revendications 1 à 5 ou 8, caractérisé en ce que la buse (58) pour le nettoyage manuel du pistolet de pulvérisation (2 ou 3) est située sous un couvercle (78) qui est monté de façon pivotante pour fermer ou ouvrir l'espace pouvant être fermé hermétiquement (9), ladite buse (58) étant directement ou indirectement reliée audit couvercle (78) de façon telle que ladite buse éjecte de l'air pressurisé contenant du solvant dans une direction vers le bas en direction de l'espace pouvant être fermé hermétiquement (9) quand ledit couvercle (78) est placé dans une position dirigée vers le haut (U) maintenant l'espace pouvant être fermé hermétiquement (9) ouvert, et en ce que ledit couvercle (78) présente avantageusement un écran (79) formant barrière pour ladite buse (58) dans une direction vers le haut et avantageusement aussi dans des directions latérales.
- Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins une desdites buses (51) comporte un éjecteur (23) pour le solvant usagé (48) et un autre éjecteur (24) pour le solvant propre (53), les passages d'éjection des solvants usagé et propre (48, 53), respectivement, s'étendant parallèlement l'un à l'autre.
- Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un dispositif de commande avec programmation du temps (28) est prévu pour permettre le nettoyage des pistolets de pulvérisation (2 ou 3) pendant une certaine période de temps avec du solvant usagé (48) et ensuite avec du solvant propre (53) pendant une certaine période de temps.
- Dispositif selon la revendication 11, caractérisé en ce que le dispositif de commande avec programmation du temps (28) comprend une valve de minuterie (20 ou 21) comportant une valve à siège (36) qui est située dans le système à air pressurisé (13) et destinée à ouvrir et fermer ledit système, en ce que la valve à siège (36) coopère avec un diaphragme (35) dans une chambre de pression (20a, 21a) qui est placée sous pression en la mettant en contact avec le système à air pressurisé (13) pour ouvrir la valve à siège (36) à l'encontre de l'action d'un ressort de rappel, et ensuite ventiler ladite chambre de pression (20a, 21a) par l'intermédiaire d'un moyen de restriction (42) pour obtenir la pression atmosphérique dans ladite chambre de pression et ainsi permettre au ressort de rappel de fermer la valve à siège (36) en coopération avec la chute de pression dans ladite valve.
- Dispositif selon la revendication 12, caractérisé en ce que le moyen de restriction est un tube capillaire (42), la durée d'ouverture de la valve à siège étant fonction de la longueur et/ou de la section d'écoulement du tube capillaire (42), et en ce que la durée d'ouverture de la valve à siège (36) peut être déterminée en utilisant un tube capillaire (42) d'une certaine longueur et/ou d'une certaine section d'écoulement et modifiée en remplaçant ce tube par un autre tube capillaire (42) de longueur et/ou section d'écoulement différente(s).
- Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un dispositif de récupération et de recyclage (47) pour récupérer et recycler le solvant comprend un dispositif de sédimentation (71) comportant des moyens de guidage (72) pour guider le solvant (48) qui s'écoule vers le bas afin qu'il s'écoule dans un intervalle (73) s'étendant autour d'eux, et ensuite lentement vers l'intérieur sous des parties des moyens de guidage (72) orientées vers l'intérieur, pendant le dépôt de polluants (75) dans la région de fond (76) de l'espace (8), au moins un conduit d'aspiration (49) faisant partie du système à solvant (14) étant prévu pour déboucher au-dessus des parties (74) desdits moyens de guidage (72) orientées vers l'intérieur pour aspirer le solvant (48) à partir d'une zone au-dessus de la région de fond (76).
- Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le pistolet de pulvérisation (2 ou 3) peut être disposé de façon à être couché dans l'espace (8) qui y est adapté.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9000579A SE500681C2 (sv) | 1990-02-19 | 1990-02-19 | Anordning för rengöring av sprutpistoler |
SE9000579 | 1990-02-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0443421A1 EP0443421A1 (fr) | 1991-08-28 |
EP0443421B1 true EP0443421B1 (fr) | 1994-07-06 |
Family
ID=20378601
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91101977A Expired - Lifetime EP0443421B1 (fr) | 1990-02-19 | 1991-02-13 | Dispositif pour nettoyer des pistolets de peinture commandés à la main |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0443421B1 (fr) |
JP (1) | JP3256552B2 (fr) |
DE (1) | DE69102714T2 (fr) |
SE (1) | SE500681C2 (fr) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07504118A (ja) * | 1991-12-03 | 1995-05-11 | ロボウオッシュ ピー・ティー・ワイ エル・ティー・ディー | 洗浄装置 |
DE4225848A1 (de) * | 1992-08-05 | 1994-02-10 | Duerr Gmbh & Co | Spülvorrichtung |
GB9606528D0 (en) * | 1996-03-28 | 1996-06-05 | Trisk Edwin Systems Ltd | Equipment for cleaning spray guns |
FR2746679B1 (fr) * | 1996-04-01 | 1998-05-15 | Fillon Pichon Sa | Installation de nettoyage d'objets divers |
SE507611C2 (sv) * | 1997-07-03 | 1998-06-29 | Drester Ab | Förfarande och anordning för tvättning av sprutpistoler |
FR2771662B1 (fr) * | 1997-12-01 | 2000-01-28 | Eurocopter France | Poste manuel de degraissage |
SE515840C3 (sv) | 2000-09-01 | 2001-10-30 | Hedson Technologies Ab | Anordning för att tvätta sprutpistoler med lösningsmedel |
ITMI20041118A1 (it) | 2004-06-03 | 2004-09-03 | Rosauto Srl | Dispositivo di lavaggio dotato di zone di lavaggio automatico e manuale separate per pistole e spruzzo e loro componenti |
FR2900073B1 (fr) * | 2006-04-20 | 2008-07-04 | Aerosec Ind Sarl | Procede et dispositif de nettoyage de produits souilles. |
ITMI20070450A1 (it) * | 2007-03-07 | 2008-09-08 | Rosauto Srl | Dispositivo di lavaggio intensivo combinato per pistole a spruzzo e loro componenti |
DE102008027910B4 (de) * | 2008-03-11 | 2024-06-06 | B-TEC GmbH Geräte- und Anlagentechnik | Vorrichtung zum Reinigen von Lackier- und/oder Klebepistolen |
FR3052988A1 (fr) * | 2016-06-28 | 2017-12-29 | Exel Ind | Procede de nettoyage automatique, poste de sechage et systeme de nettoyage comprenant un tel poste de sechage |
CN106362898B (zh) * | 2016-11-14 | 2019-01-04 | 青岛金光鸿智能机械电子有限公司 | 自动喷涂喷头清洗及废料收集装置 |
DE102019135118A1 (de) * | 2019-12-19 | 2021-06-24 | Heinrich Kunz | Reinigungsvorrichtung für Airless-Farbspritzgeräte und Verfahren dazu |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56135435A (en) * | 1980-03-27 | 1981-10-22 | Asahi Chem Ind Co Ltd | Selective ortho-methylation of phenol compound |
JPS59188069A (ja) * | 1983-04-08 | 1984-10-25 | Hitachi Zosen Corp | デイ−ゼル機関用燃料噴射方法ならびにその装置 |
US4793369B1 (en) * | 1986-09-05 | 1994-05-03 | Hercules Equipment Corp | Spray gun and associate parts washer and recycler |
US4785836A (en) * | 1987-07-17 | 1988-11-22 | Soichiro Yamamoto | Spray washer |
JPH0211467A (ja) * | 1988-06-27 | 1990-01-16 | Matsushita Electric Works Ltd | 電動ショッピングカー |
US4923522A (en) * | 1989-01-19 | 1990-05-08 | Bsd Enterprises, Inc. | Method and device for cleaning a spray gun assembly |
-
1990
- 1990-02-19 SE SE9000579A patent/SE500681C2/sv unknown
-
1991
- 1991-02-13 EP EP91101977A patent/EP0443421B1/fr not_active Expired - Lifetime
- 1991-02-13 DE DE69102714T patent/DE69102714T2/de not_active Expired - Fee Related
- 1991-02-19 JP JP02440691A patent/JP3256552B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0443421A1 (fr) | 1991-08-28 |
DE69102714D1 (de) | 1994-08-11 |
DE69102714T2 (de) | 1994-12-01 |
JPH04219165A (ja) | 1992-08-10 |
SE9000579L (sv) | 1991-08-20 |
JP3256552B2 (ja) | 2002-02-12 |
SE500681C2 (sv) | 1994-08-08 |
SE9000579D0 (sv) | 1990-02-19 |
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