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    • 1. 发明授权
    • Powder coating system for difficult to handle powders
    • 粉末涂料系统难以处理粉末
    • US5654042A
    • 1997-08-05
    • US481292
    • 1995-06-07
    • Takashi WatanabeKenichi MasudaShigeki KasaharaMasashi Sakurazawa
    • Takashi WatanabeKenichi MasudaShigeki KasaharaMasashi Sakurazawa
    • B05B5/16B05B7/14B05B15/00B05D1/06B05C11/10B05C13/02
    • B05B15/003B05B5/1683B05B7/1404Y10S118/05
    • A powder coating system for difficult to handle powders includes a powder hopper containing fluidized powder particles, a pump body connected to the hopper and having an inlet in communication with the hopper, an ejector nozzle mounted to the pump body and aimed at an outlet thereof, a second nozzle mounted to the pump body and aimed at the inlet thereof and a powder application device for receiving powder particles from the outlet of the pump body and spraying them onto an article to be coated. The ejector nozzle sprays pressurized air toward the outlet to transport powder particles along a flow path which extends from the powder hopper into the pump body via the inlet and then out of the pump body via the outlet. The second nozzle sprays air pulses at the inlet in a direction opposite the particle flow along the flow path caused by the ejector nozzle. This spray from the second nozzle creates microvibrations in the inlet of the pump body to eliminate powder particle adherence and cohesion thereat. The pump body may have separate, spaced intake and ejector portions, with the ejector nozzle mounted in the ejection portion and the second nozzle mounted on the intake portion.
    • PCT No.PCT / US93 / 12391 Sec。 371日期:1995年6月7日 102(e)日期1995年6月7日PCT提交1993年12月16日PCT公布。 出版物WO94 / 13405 日期1994年6月23日粉末涂料系统,其难以处理的粉末包括含有流化粉末颗粒的粉末料斗,与料斗连接并具有与料斗连通的入口的泵体,安装在泵体上的喷射器喷嘴, 在其出口处,安装到泵体并针对其入口的第二喷嘴和用于从泵体的出口接收粉末颗粒并将其喷涂到待涂覆的制品上的粉末施加装置。 喷射器喷嘴将压缩空气朝向出口喷射,以沿着从粉末料斗经由入口延伸到泵体中的流动路径输送粉末颗粒,然后经由出口离开泵体。 第二喷嘴在入口处沿着由喷射器喷嘴引起的流动路径的颗粒流相反的方向喷射空气脉冲。 来自第二喷嘴的喷雾在泵体的入口处产生微振动,以消除粉末颗粒的附着力和内聚力。 泵体可以具有分离的,间隔开的进气和喷射器部分,喷射器喷嘴安装在喷射部分中,第二喷嘴安装在进气部分上。