IMPROVEMENTS IN OR RELATING TO GRANULATORS

摘要

A granulator by which relatively large pieces of waste plastics material are reduced to granules by the cutting action of blades mounted on a horizontal rotor, against fixed blades 34, 35 (not shown) mounted on the surrounding housing 20. The working space of the granulator is in two horizontally-separated parts: raw material enters the first part vertically and is there subjected to a relatively coarse cutting action, after which it passes into the second part in which it is subjected to a relatively fine cutting action against fixed blades 39. Finished granules then leave the second part through an area of the surrounding housing wall which is formed as a screen 41. Part of the housing wall surrounding the first part of the space may also be formed as a screen to act as an additional outlet for finished granules, and the rotor blades may be arranged in a screw pattern to hel convey the material from the first to the second part of the space as well as to cut it. Fig. 3 shows the granulator with the rotor removed.