Material e.g. straw, volume reducing and compacting and/or slurry separating device for e.g. food industry, has mobile rings moved along fixed rings` opening so that inner perimeter of mobile rings is tangent to that of fixed rings

摘要

#CMT# #/CMT# The device has mobile rings (17) presenting a central opening (17a) interposed between adjacent fixed rings (15), and movable with respect to the fixed rings. Each screw (11) of a screw conveyor is rotating mounted around an axis of rotation across central openings (15a, 17a) of the fixed and mobile rings. A screw driving device has driving units to drive the rings (17) to move each mobile ring along the periphery of the opening (15a), so that a portion of an inner perimeter of each mobile ring is tangent to a portion of that of each fixed ring, under the control of the driving units. #CMT# : #/CMT# An independent claim is also included for a method for movably driving the mobile rings with respect to the fixed rings around the screw conveyor. #CMT#USE : #/CMT# Used for reducing, and compacting the volume of a material e.g. vegetable cut residue, shattered plastic bottle, and straw, and for separating water from a loaded slurry, for food industry, slurry treatment or paper preparation. #CMT#ADVANTAGE : #/CMT# The portion of the inner perimeter of each mobile ring is tangent to the portion of that of each fixed ring, thus permitting the movement of mobile rings i.e. backblowing of spaces between the fixed rings. The movement acts as a scraper which constantly brings the solids inside, in a conveying space where the screw is located, thus limiting the leaks of solid material. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows an enlarged partial view of parts of a solid and liquid separating device. 11 : Screws 15 : Fixed rings 15a, 17a : Central openings 17 : Mobile rings 21b : Driving unit.