Low-temperature granulator and thin film plastic recovery system

Abstract

The invention discloses a low-temperature granulator comprising a barrel, an extrusion S screw, an extrusion disc and a first driving device. One end of the barrel is provided with a feed inlet. An inclined rib is arranged on the inner wall of the barrel. The extrusion S screw is arranged in the barrel. The axis of the extrusion S screw coincides with the axis of the barrel. A corner is arranged at the edge of a cut-off blade knife of the extrusion S screw. The extrusion disc is arranged at the bottom of the barrel and is provided with an extrusion screen net. A grain cutting blade knife is movably arranged on the outer side of the extrusion disc. The first driving device is in transmission connection with the extrusion S screw and the grain cutting blade knife. When the extrusion S screw is driven by the first driving device to run at a high speed, waste plastic located in the gap between the extrusion S screw and the inner wall of the barrel is subjected to friction of the cut-off blade knife constantly, a large amount of heat is generated, and thus the effect that the waste plastic can also be melted for grain extrusion without the need for additional arrangement of a heat source is achieved. The invention further provides a thin film plastic recovery system comprising the low-temperature granulator.

Description

technical field [0001] The invention relates to the field of plastic recycling, in particular to a low-temperature granulator and a film plastic recycling system. Background technique [0002] The low temperature granulator is a device used to make plastic raw materials into plastic granules. The basic working principle of the plastic extruding equipment is the same, that is, the plastic raw material is added into the barrel of the extrusion S screw, and the plastic raw material is melted by extrusion heating, and then extruded by the feeding S screw extrusion plate, and the melted plastic is extruded. It is extruded from the barrel and cut into plastic granule raw materials under the rotation of the cutting blade knife, so as to realize the recycling of plastic raw materials. [0003] The problem is that waste plastics need to be heated when they are recycled and extruded. If the setting of the heat source is used, the volume of the low-temperature granulator will be incre...

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Problems solved by technology

[0003] The problem is that waste plastics need to be heated when they are recycled and extruded. If the setting of the heat source is used, the volume of the low-temperature granulator will be increased, which is not convenient for the movement and placement of the equipment, which limits the scope of application; The heat source is prone to hidden dangers, which increases the safety

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