| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for preventing contamination of drug dusts when a segmenting valve is segmented. SOLUTION: This device comprises a plurality of hollow housing suction containers 32 having a fan-shaped concave part 34 and forming an inner circumference of a shape copying an outer circumference of a flange of a segmenting valve by being integrated in a ring shape, a hook fitting 36 which is lock means projected toward the concave part 34 at a top end of the housing, a suction hole 42 opposed to a spacing formed by segmenting the segmenting valve at the concave part 34, an exhaust hole 44 formed on the housing, an exhaust duct whose one end is connected with the exhaust hole 44, a dust collecting device which is duct collecting means connected with the other end of the exhaust duct, and a dust concentration meter arranged to the exhaust duct. COPYRIGHT: (C)2009,JPO&INPIT
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