PURPOSE: To adjust the moisture content by forming a screw wing near the final end of a screw external cylinder and adjusting the length of the region without forming the screw wing inside the screw external cylinder.
CONSTITUTION: The external diameter of a screw shaft 1 is expanded toward the final end of a screw external cylinder 3 and it is not expanded at a cake dehydrating part 5. In the cake dehydrating part 5, several pieces of dehydrating rings 51 are tightened with bolts to the final flange of the screw external cylinder 3. In this screw press type dehydrator, a slurry is supplied in a space between the screw external cylinder 3 and the screw shaft 1, it is carried to a cake discharging port 4 with the rotation of the screw wing 2, the slurry is compressed and the moisture is squeezed out caused by reducing the volume. In the cake dehydrating part 5, the moisture content is reduced with a large pressure and the cake is discharged from the discharging port. The moisture content can be adjusted corresponding to the property of the slurry by adjusting the number of dehydrating ring 51.
SUGIHARA TETSUO
HASEGAWA KAORU
YOSHIKAWA HIDEO
YANAGAWA GIKEN KK