| 摘要 |
<p>The shaft (11) of the screw is overhung mounted in tapered roller bearings. The turns (12) of the screw conveyor advance the material fed through a hopper (5), through a drying channel (4). Downstream the last turn (12) means (13) are provided to break up the material. The presence of the turns is lmited to a predetermined distance between one end of the hopper input and an area a little beyond the downstream opposite end thereof. Openings (6, 6 min ) for expulsion of water are provided all around the casing of the channel (4). A collar (CR) contains heated liquid to facilitate the evaporation of particular materials to be dried. Back pressure elastically registrable means (7), are provided at the outlet of the channel (4) to restrain the advancing material to be dried. Shaft's (11) cooling means (23) are provided inside the channel (4). A blade (8) is fixed to the shaft (11) downstream means (7) to break up the outcoming material.
<??>Considerable savings in power requirements and consumption of electricity and fuel are achieved with respect to tunnel driers, as well as a higher quality product in terms of subsequent treatment. </p> |
