| 摘要 |
<p>The outer surface of the tumbler (1) has an opening closed by at least one door (15) which can be moved selectively between a closed position and an open position by a translatory movement substantially parallel to the principal axis (X1) of rotation of the tumbler. The door or doors (15) in question are moved by an opening device (21) which is located in a fixed position on the frame which supports the drum-like rotary body of the tumbler. The opening device (21) includes one or more slides (23) which have grooves (25) through which external pins (20) on the doors (15) are intended to pass so that the doors (15) can be opened and closed as a result of corresponding movements of the slides (23) towards and away from each other. The products can thus be discharged even when the tumbler is rotating. For this purpose, the portion of the tumbler which faces downwardly at any particular time is surrounded by an apron-like structure (12) with an outlet at its bottom. The control unit (5) of the tumbler is configured so that, whilst the products are being discharged, it imparts a general swinging motion to the tumbler, with its outlet opening facing downwards. The preferred application is for processing food and pharmaceutical products, for example, for coating products with layers of chocolate. <IMAGE></p> |
