Patent ID: 8636492

Claim:
A device for granulating thermoplastic material emerging from nozzles in a perforated plate comprising: a. a motor-driven cutter arrangement that has at least one blade located opposite the perforated plate, so that the at least one blade passes over the nozzles in the perforated plate and cuts pellets of the emerging thermoplastic material; b. a housing adjoining the perforated plate and enclosing the at least one blade of the motor-driven cutter arrangement, wherein the housing comprises: (i) an inlet apparatus for coolant comprising: 1. a separate inlet chamber circumferentially enclosing the housing in an area of rotation of the at least one blade, wherein a discharge opening for the coolant is formed through a portion of the separate inlet chamber, and wherein a cross-section of the separate inlet chamber decreases over its circumference in the direction of rotation of the at least one blade starting from the discharge opening, wherein the separate inlet chamber is configured so that the coolant flows essentially radially inward from outside into the housing from all sides, and continues to flow through the area of rotation of the at least one blade in at least a substantially centripetal direction; and 2. an inlet nozzle arrangement circumferentially extending between the separate inlet chamber and the housing; and (ii) an outlet for the coolant and the pellets located therein.