At present, waste plastic is recycled to a waste plastic treatment plant for crushing, and then granulated through a plastic granulator. The crushing noise is loud and there is a lot of dust, resulting in poor working environment. However, plastic granulators melt waste plastic through friction and electric heating, and then extrude it into granules.

The design principle of a plastic granulator is based on the fact that the material preparation chamber is connected to the upper melting chamber through a door, and the mixing rod device on the mixing shaft is driven by a rotating device. The upper and lower melting chambers are separated by a grid, and the lower part of the mixing shaft is equipped with spiral blades. The spacer in the lower melting chamber allows the heated exhaust gas to enter the inlet of the circulating gas, which is connected to the inlet of the fan. The outlet of the fan is connected to the heating chamber, and heating elements are installed in the heating chamber, The outlet of the heating chamber is connected to the melting chamber through an intake pipe, and the transmission unit is chain driven. It is driven by an electric motor through chain drive to reduce the speed and drive the grid separation mixing shaft.

The waste plastic is heated and melted by hot air, and the melted plastic is extruded and granulated through screws. The recycled waste plastic does not need to be crushed again, thus avoiding noise and dust flying and improving the working conditions of workers. By controlling the temperature of the hot air, the degradation of plastic during the melting process can be avoided due to excessive temperature. The hot air can be recycled, reducing the energy consumption of the plastic granulator.

Plastics play an important role in various fields of economic construction due to their excellent properties such as high strength, corrosion resistance, and ease of processing. However, with the widespread use of plastics, the treatment of waste plastics has become a challenge. Waste plastics are difficult to degrade naturally, causing environmental pollution and resource waste, especially packaging plastics, which account for a large proportion of waste plastics. The recycling and utilization of plastic waste is an important measure to turn waste into treasure, and plastic granulators are a powerful assistant in solving ecological and environmental pollution.