Patent ID: 6658997
Filing Date: 2003-12-09
Classification: B30B

Abstract:
An apparatus for producing a waste compressed solid comprising:a hopper comprising an opening for receiving a waste in an upper side thereof and a discharge port in a bottom side; a feed screw conveyor for feeding said waste in said hopper to said discharge port; a first draw screw conveyor and a second draw screw conveyor, each comprising a spiral-shaped draw blade drawing said waste in said hopper to a neighbor of said feed screw conveyor; a compression chamber comprising a supply port communicated with said discharge port of said hopper and a take-out port for said waste; and a movable piston compressing said waste in said compression chamber, wherein shafts of said first and second draw screw conveyors substantially vertically cross to a shaft of said feed screw conveyor in a close manner, and spiral-shaped draw blades of said first and second draw screw conveyors are symmetrical to the shaft of said feed screw conveyor.