EP1386671B1 - Verbesserte Reinigungsvorrichtung für eine Sprühpistole mit Schwerkraftbehälter - Google Patents

Verbesserte Reinigungsvorrichtung für eine Sprühpistole mit Schwerkraftbehälter Download PDF

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Publication number
EP1386671B1
EP1386671B1 EP03077394A EP03077394A EP1386671B1 EP 1386671 B1 EP1386671 B1 EP 1386671B1 EP 03077394 A EP03077394 A EP 03077394A EP 03077394 A EP03077394 A EP 03077394A EP 1386671 B1 EP1386671 B1 EP 1386671B1
Authority
EP
European Patent Office
Prior art keywords
washing
washing device
gun
spray gun
channel
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
Application number
EP03077394A
Other languages
English (en)
French (fr)
Other versions
EP1386671A1 (de
Inventor
Giuseppe Rosa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rosauto Srl
Original Assignee
Rosauto Srl
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rosauto Srl filed Critical Rosauto Srl
Publication of EP1386671A1 publication Critical patent/EP1386671A1/de
Application granted granted Critical
Publication of EP1386671B1 publication Critical patent/EP1386671B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • B08B3/02—Cleaning by the force of jets or sprays

Definitions

  • the present invention refers to an improved washing device for a spray gun with a gravity bowl.
  • a spray gun mixes compressed air with a paint fed from a container, or bowl to be precise, through gravity.
  • the jet of compressed air allows nebulized paint to be sprayed externally.
  • the airflow is controlled by a lever on a grip on the gun.
  • the post-use washing step is particularly important, in order to ensure optimal operation the next time they are used.
  • a known technique which is currently widely used is that of using a washing device comprising a tank, equipped with a cover, in which the gun to be washed is placed.
  • a washing device comprising a tank, equipped with a cover, in which the gun to be washed is placed.
  • nozzles are foreseen which spray washing liquid from all sides of the gun itself.
  • conical nozzles the flow of which is directed upwards.
  • the spray gun is positioned upside down and a washing nozzle is inserted in a paint supply channel which connects the gun with the gravity bowl.
  • a washing nozzle is inserted in a paint supply channel which connects the gun with the gravity bowl.
  • the gravity bowl is removed prior to the positioning of the gun in the washing device.
  • washing nozzle also acts as a support for the gun itself.
  • an apparatus for cleaning a sprayer having a material inlet, comprising a housing, a rack within the housing for supporting the sprayer, an adapter having one end adapted to connect to the material inlet of the sprayer, a tube within the housing having one end connected to the other end of the adapter, a solvent supply, and means for circulating solvent connecting the solvent supply to the tube, for circulating solvent from said solvent supply, through the tube and the adapter, and into the sprayer.
  • the apparatus includes a sprayer trigger holder, comprising a unitary, resilient, spring wire clip, having at one end a C-shaped portion for holding the trigger in a retracted position, and the other end of the wire clip having a hook-shaped portion for hanging the sprayer.
  • a sprayer trigger holder comprising a unitary, resilient, spring wire clip, having at one end a C-shaped portion for holding the trigger in a retracted position, and the other end of the wire clip having a hook-shaped portion for hanging the sprayer.
  • washing liquid normally used is a diluent: especially during spraying, it is an extremely volatile product, which generates polluting and flammable gases.
  • blowing air in such a channel involves continuous emission into the atmosphere of the harmful gases which form, with consequent problems of pollution and also of safety for the personnel carrying out the washing operations.
  • the general purpose of the present invention is that of overcoming the aforementioned drawbacks of the prior art and in particular is that of realising an improved washing device for a spray gun with a gravity bowl which allows effective cleaning of the gun itself without involving pollution of the environment.
  • Another purpose is that of realising an improved washing device for a spray gun with a gravity bowl in an extremely simple, cost-effective and particularly functional manner.
  • an improved washing device is wholly indicated with 10, and in the illustrated example, according to the present invention, comprises a washing tank 12 in which washing nozzles 14 are arranged.
  • the tank 12 has an opening, able to be closed with a closing element 16. Through such an opening a spray gun 20, represented in section in figure 1, is entered into the tank 12.
  • the spray gun 20 has at least one paint supply channel 22, which connects it to a gravity bowl, not shown in the figures, which is arranged above the gun 20 itself and where paint is poured to be sprayed.
  • the paint supply channel 22 terminates in a front zone of the gun 20. Still in such a front zone at least one compressed air channel 24 terminates.
  • Such a channel 24 crosses the gun 20, terminating at a base of a grip 26 of the gun 20.
  • the compressed air channel 24 is L-shaped.
  • FIG 2 it can be seen how inside the tank 12 a support 18 for the gun 20 is foreseen, which is arranged in a position similar to that taken up during spraying operations, i.e. with a paint supply hole facing upwards and with a compressed air entry hole facing downwards.
  • washing liquid is sprayed in the paint supply channel 22, through insertion of a further washing nozzle 15, for example having a conical end.
  • a portion of the piping 19 comprises flexible piping 17, suitable for allowing easy insertion of the further washing nozzle 15, arranged for example at one end of the piping 19, in the paint supply channel 22.
  • washing device 10 The operation of the washing device 10 according to the invention is clear from that which has been described above with reference to figures 1 and 2, and in brief is the following.
  • the trigger 27 of the gun is pulled and held, through a catch 28, in pulled position, so as to keep the free end of the paint channel 22 open.
  • the tank 12 After having positioned the gun 20 (with the trigger 27 pulled) on the support 18 and after having inserted the further washing nozzle 15 in the paint supply channel 22, the tank 12 is closed with the closing element 16.
  • the washing liquid is introduced into the piping 19.
  • the piping 19 feeds the washing nozzles 14 and the further nozzle 15.
  • the latter manages to wash the paint supply channel 22 extremely well, whereas the washing liquid does not enter into the compressed air channel 24 through gravity, since the vertex of the "L" of channel 24 itself faces upwards.
  • FIG 3 illustrates a further possible practical embodiment of the invention, where the components which are the same as/equivalent to those illustrated in figures 1 and 2 carry the same reference numerals increased by 100.
  • An improved washing device is wholly indicated with 110, and comprises a washing tank 112 in which washing nozzles 114 are arranged.
  • the tank 112 has an opening, which can be closed with a closing element 116. Through such an opening a spray gun 120 is introduced into the tank 112.
  • a support like the support 18 of figure 2 is not foreseen, since the gun 120 is arranged, still in a position like the one taken up during spraying operations, through for example insertion with interference of a conical end of the further washing nozzle 115 in the paint supply channel 122.
  • washing device 110 The operation of the washing device 110 according to the invention is clear from that which has been described above and is totally analogous to that of the washing device 10 of figure 2. Also in this position (totally similar to that of figure 2), the liquid does not enter into the air channel 24, thus avoiding the drawbacks of the prior art.
  • the shapes of the improved washing device for a spray gun with a gravity bowl of the invention can be different from the one shown only as a non-limiting example in the drawings, just as the materials can also be different.

Landscapes

  • Nozzles (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)

Claims (11)

  1. Verbesserte Reinigungsvorrichtung (10, 110) für eine Spraypistole (20, 120) mit einem Schwerkraftbehälter von dem Typ, welcher einen Reinigungstank (12, 112) umfasst, in welchem Reinigungsdüsen (14, 114) für die Spraypistole (20, 120) angeordnet sind, wobei die Spraypistole (20, 120) mindestens einen Farbenzufuhrkanal (22) aufweist, welcher in einem vorderen Bereich der Pistole (20, 120) endet, wobei mindestens ein Kanal (24) für komprimierte Luft in den vorderen Bereich mündet, wobei der Kanal (24) für komprimierte Luft L-förmig ist und die Pistole (20) durchzieht und an einer Basis eines Griffes (26) der Pistole (20) endet, dadurch gekennzeichnet, dass die Spraypistole (20, 120) mit einem Farbenzufuhrloch des Farbenzufuhrkanals (22), welches nach oben weist, und mit einem Eintrittsloch für komprimierte Luft des Kanals (24) für komprimierte Luft, welches nach unten weist, angeordnet ist, wobei eine Reinigungsflüssigkeit in den Farbenzufuhrkanal (22) eingeführt ist, und dass die Ecke des "L"s des Kanals (24) selbst nach oben weist, wodurch die Reinigungsflüssigkeit aufgrund der Schwerkraft nicht in den Kanal (24) von komprimierter Luft eindringen kann.
  2. Reinigungsvorrichtung (10, 110) nach Anspruch 1, dadurch gekennzeichnet, dass die Reinigungsflüssigkeit in den Farbenzufuhrkanal (22, 122) durch die Einführung einer weiteren Reinigungsdüse (15, 115) gesprayt wird.
  3. Reinigungsvorrichtung (10, 110) nach Anspruch 2, dadurch gekennzeichnet, dass die weitere Reinigungsdüse (15, 115) ein konisches Ende aufweist.
  4. Reinigungsvorrichtung (10, 110) nach Anspruch 2, dadurch gekennzeichnet, dass die Reinigungsdüsen (14, 114) und die weitere Reinigungsdüse (15, 115) durch eine Rohrleitung (19, 119) verbunden sind, in welche die Reinigungsflüssigkeit eingeführt ist.
  5. Reinigungsvorrichtung (10,110) nach Anspruch 4, dadurch gekennzeichnet, dass ein Abschnitt der Rohrleitung (19) eine flexible Rohrleitung (17) umfasst, welche derart geeignet ist, dass sie eine Einführung der weiteren Reinigungsdüse (15), welche an einem Ende der Rohrleitung (19) angeordnet ist, in den Farbenzufuhrkanal (22) ermöglicht.
  6. Reinigungsvorrichtung (10, 110) nach Anspruch 1, dadurch gekennzeichnet, dass die Sprühpistole auf einer Stütze (18), welche innerhalb des Tanks (12) angeordnet ist, ruht.
  7. Reinigungsvorrichtung (10, 110) nach Anspruch 2, dadurch gekennzeichnet, dass ein konisches Ende der weiteren Reinigungsdüse (115) mit einem Eingriff in den Farbenzufuhrkanal (122) eingeführt ist.
  8. Reinigungsvorrichtung (10, 110) nach Anspruch 1, dadurch gekennzeichnet, dass der Tank (12, 112) eine Öffnung aufweist, welche mit einem Verschlusselement (16, 116) verschlossen werden kann.
  9. Reinigungsvorrichtung (10, 110) nach Anspruch 6, dadurch gekennzeichnet, dass eine Mehrzahl der Reinigungsdüsen (14) um die Stütze (18) herum vorgesehen ist.
  10. Reinigungsvorrichtung (10, 110) nach Anspruch 1, dadurch gekennzeichnet, dass das freie Ende des Kanals (22) offen gehalten wird, indem ein Abzug (27) der Pistole gezogen wird, wobei Mittel vorgesehen sind, den Abzug (27) in der gezogenen Position zu halten.
  11. Reinigungsvorrichtung (10, 110) nach Anspruch 10, dadurch gekennzeichnet, dass die Mittel aus einer Sperrvorrichtung (28) bestehen.
EP03077394A 2002-07-31 2003-07-30 Verbesserte Reinigungsvorrichtung für eine Sprühpistole mit Schwerkraftbehälter Expired - Lifetime EP1386671B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT001707A ITMI20021707A1 (it) 2002-07-31 2002-07-31 Dispositivo di lavaggio migliorato per una pistola a spruzzo
ITMI20021707 2002-07-31

Publications (2)

Publication Number Publication Date
EP1386671A1 EP1386671A1 (de) 2004-02-04
EP1386671B1 true EP1386671B1 (de) 2005-09-07

Family

ID=30012517

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Application Number Title Priority Date Filing Date
EP03077394A Expired - Lifetime EP1386671B1 (de) 2002-07-31 2003-07-30 Verbesserte Reinigungsvorrichtung für eine Sprühpistole mit Schwerkraftbehälter

Country Status (4)

Country Link
EP (1) EP1386671B1 (de)
DE (1) DE60301525T2 (de)
ES (1) ES2249679T3 (de)
IT (1) ITMI20021707A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7785420B2 (en) * 2006-08-01 2010-08-31 Hedson Technologies Ab Method for cleaning a spray gun
FR2915117B1 (fr) * 2007-04-18 2009-06-05 Fillon Technologies Soc Par Ac Installation et dispositif de nettoyage d'objet equipe d'un circuit de circulation de fluide
SE534559C2 (sv) 2010-02-24 2011-10-04 Hedson Technologies Ab Sprutpistoltvättanordning och metod för att anordna en sprutpistol däri, samt pistolhållare därför
GB2505692B (en) * 2012-09-07 2018-07-11 Ui Equipment Ltd Spray gun washing apparatus and method
CN108906443A (zh) * 2018-09-07 2018-11-30 攀钢集团攀枝花钢钒有限公司 喷嘴清洗装置和自动喷涂的喷嘴清洗方法
CN112547393B (zh) * 2020-11-30 2022-03-11 浙江瑞丰五福气动工具有限公司 气动喷枪喷漆工作台

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5174317A (en) * 1986-09-05 1992-12-29 Herkules Equipment Corporation Spray gun and associate parts washer and recycler
US5937875A (en) * 1996-09-30 1999-08-17 Nygren; Richard Apparatus and method for cleaning sprayers
SE9702566L (sv) * 1997-07-03 1998-06-29 Drester Ab Förfarande och anordning för tvättning av sprutpistoler

Also Published As

Publication number Publication date
EP1386671A1 (de) 2004-02-04
ES2249679T3 (es) 2006-04-01
ITMI20021707A1 (it) 2004-02-01
DE60301525D1 (de) 2005-10-13
DE60301525T2 (de) 2006-06-22

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