Patent ID: 9662808
Date: 2017-05-30
CPC Classifications: B29B,B29C,B29K,Y02E,Y02W

Claim:
1. A system for pelletizing Solid Refuse Fuel (SRF), the system comprising: a first crusher that primarily crushes plastic waste introduced manually or by a conveyer belt; a vibration sieve plate-conveyer that transports the primarily crushed plastic waste discharged from the first crusher; a hopper that stores the primarily crushed plastic waste discharged from the vibration sieve plate-conveyer; a second crusher that is disposed under the hopper and secondarily crushes the primarily crushed plastic waste discharged from the hopper; a first rotational shaft that is disposed under the second crusher and is equipped with a first screw that fuses and transports the secondarily crushed plastic waste discharged from the second crusher; a filter unit that is combined with the first rotational shaft and removes impurities by filtering the secondarily crushed plastic waste that is fused and transported by the first screw; a second rotational shaft equipped with a second screw that transports impurity-free plastic waste that is filtered by the filter unit; and a molding machine that molds the impurity-free plastic waste transported by the second screw, wherein the first rotational shaft has a structure in which a hot wire is installed in the first rotational shaft and the first screw is installed on an outer surface of the first rotational shaft, thereby simultaneously fusing and transporting the secondarily crushed plastic waste processed by the second crusher, and wherein the second rotational shaft has a structure in which a cooling water pipe is installed in a portion of the second rotational shaft, thereby simultaneously transporting and cooling down the fused plastic waste transported by the first screw so that the fused plastic waste becomes gelled, and wherein: the filter unit is encased in a filter housing; the filter housing is provided with hollow protrusions; the hollow protrusions have respective fixing holes; and the filter unit is fixed to the first rotational shaft and second rotational shaft by bolts inserted in the fixing holes.