SCREW TYPE DEWATERING APPARATUS FOR IMPROVING DEWATERING EFFICIENCY BY SEPARATION MEANS INCLUDING FIXING RINGS AND CIRCULAR SWING RINGS, DRIVING PLATES INSTALLED ON SEPARATION MEANS AND SUPPORTING BARS FIXED TO DRIVING PLATES

摘要

PURPOSE: To provide a screw type dewatering apparatus which shakes swing rings well to improve dewatering efficiency, and in which a swing ring driving means is hardly worn out so that life of the swing ring driving means is substantially extended. CONSTITUTION: The screw type dewatering apparatus comprises a separation tank(10) on both sides of which a sludge supply part and a solid discharge part are formed; a separation means(20) comprising a plurality of fixing rings(21) fixed perpendicularly to an inner part of the separation tank with being distanced from each other in a certain gap, and a plurality of swing rings(22) disposed between the fixing rings with being spaced apart from the fixing rings in a small gap; a separation plate for dividing the separation means into a concentration zone at the sludge supply part side of a space part(S) and a dewatering zone at the solid discharge part side; a screw(30) which is installed in the space part formed in the separation means, and in which an inclined part(32') is formed on an end of the solid discharge part side in such a way that a blade(32) is more inclined to the sludge supply part side as it goes from the center to the outer circumferential surface of the screw; and a swing ring driving means(40) driven with being interlocked with the screw, the swing ring driving means comprising cams(41,41') fixed to both ends of screw shaft, driving plates(44,44') for supporting the center of the cams such that the driving plates are shaken along the contour of the cams at the outside of the cams, and at least three or more supporting bars(45) which fix the swing rings, and both ends of which are fixed to the driving plates so that the swing rings are shaken along the contour of the cams, wherein the supporting bars are closely adhered to the outer circumferential surface of the swing rings such that the supporting rings support the swing rings by controlling the swing rings, and reinforcement rings are installed on an outer surface part of the supporting bars closely adhered to the swing rings to prevent deformation of the supporting bars.