MATERIAL SCEENING APPARATUS WITH MULTI-MODE SCREEN BOX

摘要

A material screening apparatus is adaptable between a reduced-bearing mode and an additional-bearing mode. The apparatus comprises a screen box coupled to a frame and comprising at least one screen deck. A rotatable shaft is coupled to the screen box for imparting vibrational and/or oscillatory motion to the screen deck(s). Drive means imparts rotational motion to the shaft and a first set of bearings couples the shaft to the screen box. In the additional-bearing mode only, a second set of bearings couples the shaft to the frame. Changing between modes allows the screening characteristics of the apparatus to be adjusted.

主权项

1. A material screening apparatus adaptable between a reduced-bearing mode and an additional-bearing mode, the apparatus comprising:
a screen box comprising at least one screen deck; a frame, the screen box being coupled to the frame; a rotatable shaft coupled to the screen box for imparting vibrational and/or oscillatory motion to said at least one screen deck; drive means operable to impart rotational motion to the shaft; and a first set of at least one bearings coupling said shaft to said screen box, wherein, in the additional-bearing mode only, a second set of at least one bearings couples the shaft to the frame.