| 摘要 |
<p>A method for recovering the luminescent material from a mercury vapour electric discharge lamp, or like lamps, in which the ends of the lamp bulb or tube are separated from the intermediate bulb part (22) subsequent to equalizing the pressure in the lamp. The luminescent material (30) is loosened from the inner wall surface of the bulb part (22) with the aid of a stripping device (27) which is arranged to be inserted into the bulb part (22) from one end (26) thereof, and in which the loosened material is collected with the aid of a suction device (25) connected to the other end (23) of the bulb part. The invention also relates to an arrangement for removing and collecting the luminescent material, this arrangement comprising the aforementioned stripping device (27) in the form of a stripping head (29) mounted on one end of a rod (28), and the aforementioned suction device (25) is capable of being connected to one end of the bulb part (22). The rod (28) is arranged to move the stripping head (29) backwards and forwards in the bulb part (22), the stripping head (29) being guided in a manner to form an annular gap between the head and the wall of the bulb part. The luminescent material is loosened by the amplified air stream passing through the gap.</p> |
