High-efficiency stirring screw for hollow blow molding machine, characterized by comprising a body, on which a feeding section, a stirring section and an extrusion section are formed. Double-sided bidirectional threads are respectively formed on the outer walls of the feeding section, the stirring section and the extrusion section. The pitch between the double-sided bidirectional threads of the feeding section and the extrusion section is the same, and the pitch ratio of the double-sided bidirectional threads between the feeding section, the extrusion section and the stirring section is 1:1:0.4 to 1:1:1.5. The upper and lower ends of the double-sided bidirectional threads are provided with cutting surfaces with different inclination angles. The pitch between the double-sided bidirectional threads of the feeding section and the extrusion section is the same, while that of the stirring section is different. The double-sided bidirectional threads enable fast and efficient processing of plastic raw materials, and can repeatedly stir and cut the plastic raw materials. The unequal-pitch threads can process plastic raw materials with different particle sizes, making the stirring more uniform and the processing more complete and sufficient, so that the stirred plastic raw materials have fewer impurities and good gloss.
Country Code: CN
Application Number: CN201620163712.X
