초록 ▼

An improved underwater pelletizer adapted to prevent extruded material from agglomerating in an pelletizing assembly, which pelletizer includes a cutting assembly having (1) a shroud fixedly mounted to the surface of the recess in the center of the die ring thereby preventing pellets from being trap

An improved underwater pelletizer adapted to prevent extruded material from agglomerating in an pelletizing assembly, which pelletizer includes a cutting assembly having (1) a shroud fixedly mounted to the surface of the recess in the center of the die ring thereby preventing pellets from being trapped between the die face and the cutting assembly; and (2) novel knives contoured to conform in their angular positions to the curvature of the shroud.

대표청구항 ▼

A pelletizing assembly for pelletizing an extruded material, said pelletizing assembly comprising: an extrusion die plate comprising: a die face at downstream side of the die plate; a die ring formed on the downstream side of the die face having a wear surface projecting outwardly from the die face

A pelletizing assembly for pelletizing an extruded material, said pelletizing assembly comprising: an extrusion die plate comprising: a die face at downstream side of the die plate; a die ring formed on the downstream side of the die face having a wear surface projecting outwardly from the die face to form a recess in center of die ring; and a channel means extending from upstream side of the die plate and the die ring to the die face adapted to deliver the extruded material from the upstream side of the die plate to the die face for extrusion, and said channel means forming an orifice in the die ring for extruded material to exit the die plate; a cutting assembly mounted for rotation adjacent the die face, said cutting assembly comprising: a hub attachable to a driving shaft for rotation in spaced relation with the die face; and a cutting element mounted on the hub for rotation therewith, said cutting element having a cutting edge for movement adjacent a downstream surface of the die ring; and a shroud element fixedly mounted to said die face, said shroud having a surface corresponding to a surface on said cutting assembly such that an interface is established between the cutting assembly and the extrusion die which permits free rotation of the cutting assembly and forms a barrier to prevent pellet from migrating (i) into said recess in center of die ring and between the die face and the hub.