1493637 Electrostatic spray booth GEMA AG APPARATEBAU 12 Nov 1975 [14 Nov 1974 23 July 1975] 46791/75 Heading B2L In an electrostatic spray booth 10 of the type wherein excess powder from a spray gun 17 is removed therefrom through a moving filter strip 23 by suction of a blower 34, the filtered powder is removed from the upper run 22 of the strip outside the booth by a suction nozzle 44, the removed powder then being drawn by suction blower 49 via line 47 through a cyclone separator 48 wherein most of the powder removed from the air stream and passed via sieve 54 to supply container 19. Powder not separated at 48 is recycled to the booth via line 58 and discharge tube 59. Fresh powder is added to the system from container 41 onto filter strip 23 upstream of the suction nozzle 44 and downstream of corona discharge electrode 37. The suction nozzle 44 may be provided with a device illustrated in Figs. 2 and 3 (not shown) for pulsating the air in suction duct 47 so as to prevent powder deposition therein. The suction blower 49 is preferably of the injector type [Fig. 4 (not shown)] and comprises two parts (71), (72) defining an annular gap (76) therebetween through which compressed air is blown into a constriction (82) thereby drawing-in air from line 50.
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机译：1493637静电喷漆房GEMA AG APPARATEBAU 1975年11月12日[1974年11月14日1975年7月23日]税号B2L在这种类型的静电喷漆房10中，通过移动的滤纸条23从喷枪17中除去多余的粉末。在通过鼓风机34的抽吸之后，过滤后的粉末通过吸嘴44从小室外部的带材的上部运行22中去除，去除的粉末然后通过管线47通过旋风分离器48由抽吸鼓风机49抽吸，其中大部分从空气流中除去的粉末，并通过筛网54传递到供应容器19。在48处未分离的粉末通过管线58和排放管59循环到小室中。新鲜的粉末从容器41添加到系统中，到达位于上游的过滤带23上吸嘴44可以设置有如图1和图2所示的装置。 2和3（未示出）用于使吸气管道47中的空气脉动，以防止粉末在其中沉积。抽吸鼓风机49优选地是喷射器类型的。图4中未示出），并且包括两个部分（71），（72），在它们之间限定了环形间隙（76），压缩空气通过环形间隙（76）吹入缩颈（82），从而从管线50吸入空气。
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