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    Airless dual component spray gun
    3.
    发明授权
    Airless dual component spray gun 失效
    无气双组份喷枪

    公开(公告)号：US3488004A

    公开(公告)日：1970-01-06

    申请号：US3488004D

    申请日：1968-04-08

    Applicant: DEVILBISS CO

    Inventor： PEEPS DONALD J

    IPC: B05B7/04 ,  B05B7/12 ,  B05B15/02 ,  B29B7/74 ,  B05B11/00

    CPC classification number: B29B7/7438 ,  B05B7/0408 ,  B05B7/1209 ,  B05B15/025

    Abstract: 1,182,520. Spray producers; mixing flowing liquids. DEVILBISS CO. 19 Nov., 1968 [8 April, 1968], No. 54837/68. Headings B1C and B2F. A spray gun comprises a body 12 having one solvent 66 and two fluid component passages 1, 2, a spray head 22 attached to the body, and a spray nozzle 24 attached to the spray head, the spray head comprising a replaceable valve plate 92 having a solvent check valve covering the solvent passage and two fluid check valves covering the two fluid passages, a mixing head 94 (see also Figs. 6-8, not shown) attached to the body and lying against the valve plate, said mixing head having a solvent chamber (102) adapted to receive solvent through the solvent check valve 92 and two fluid component chambers (104, 106) adapted to receive fluid components through the fluid check valves, means in the mixing head for mixing the fluid components and delivering the mixture to the spray nozzle, and means for cleaning said fluid component chambers, mixing means, delivery means and nozzle with pressurized solvent. The valve plate may be a sheet of resilient plastic, e.g. polytetrafluoroethylene, with three flexible flaps cut in it, and holes co-operating with dowels 90 to ensure correct alignment. The chambers may be formed by three blind bores in the head, the fluid chambers being connected by a milled channel (108) which is perpendicularly bisected by a further milled channel (114) connecting with the outlet (112). The solvent chamber may communicate with one of the fluid chambers by a further milled channel (116), whereby the fluid chambers and spray head may be flushed with solvent. Mixing is effected by turbulence.

    Spray booth
    8.
    发明授权
    Spray booth 失效
    喷雾机

    公开(公告)号：US3424129A

    公开(公告)日：1969-01-28

    申请号：US3424129D

    申请日：1967-04-20

    Applicant: DEVILBISS CO

    Inventor： PEEPS DONALD J ,  OWEN LEWIS M

    IPC: B05B15/02 ,  B05B15/12 ,  B05C11/16 ,  B05C5/00

    CPC classification number: B05B15/1288 ,  B05B15/02 ,  B05B15/1222 ,  B05B15/1262 ,  Y10S55/46

    Abstract: 1,149,335. Coating apparatus. DE VILBISS CO. 21 Feb., 1968 [20 April, 1967], No. 8433/68. Heading B2L. A spray booth comprises a coating chamber containing a support for an article to be coated, an air supply chamber, an inlet opening between said chambers for directing air from the supply chamber to the coating chamber, a spray head located near the inlet opening for directing coating spray towards the article, and means for exhausting air from the coating chamber at a location remote from the inlet opening. The arrangement is designed to effect a reduction in the volume of the air as usually circulated. As shown in Fig. 3, a coating chamber 12, for articles A suspended from an overhead conveyor, is defined by walls 38 and extends from respective inlet and outlet end openings 18, 20, the width of which is controlled by sliding doors in accordance with the width of the articles 16. Openings in walls 38 are bounded by plates 50 disposed perpendicularly thereto. On each side of chamber 12 is a closed air supply chamber 36 provided with access doors 70. At each opening in wall 38 is positioned a vertical .row of spray guns 24 vertically reciprocable by means 28 on a carriage 30 mounted on rails 34 for movement towards and away from chamber 12. Rigid with and surrounding carriage 30 is a shroud of inwardly-directed plates 54, the outer peripheral edges 56 of which extend close to the plates 50, whereby restricted openings 48 are provided between the chambers 36 and the chamber 12. Fresh air is forced by a fan through ducts communicating with the chambers 36 and passes therefrom through the openings 48 into chamber 12. The air is exhausted from the latter through a floor grating 60, and after passing through a lower chamber or water tank is drawn upwardly through ducts 64, containing water sprays and baffles, by respective exhaust fans having a capacity slightly less than than that of the supply fan for maintaining a slight positive pressure in chamber 12 to prevent the ingress of dust through the end openings 18, 20. In a modification two vertical Tows of spray guns are mounted on each carriage 30. In Fig. 5 the spray booth apparatus is located in an existing room 78 from which air passes through restricted openings 88 in walls 82 into coating chambers 84, and leaves the latter through baffles 90 before being exhausted through ducts 91. Spray guns 74 are positioned at the openings 88, and the walls 82 are provided with louvres 92 for regulating the supply of air to chambers 84.

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