Equidirectional parallel three-screw extruder

Abstract

The invention discloses a co-rotating parallel three-screw extruder, and belongs to the technical field of extruder equipment. Comprising a base, a three-screw extruder and a feeding device, the three-screw extruder is installed at the top end of the base, the feeding device is installed at the top end of the three-screw extruder, and the feeding device comprises a feeding support, a feeding barrel, a sealing cover, a feeding pipe, a servo motor, a rotating shaft, a stirring rod, a scraping plate, a stirring plate, a correlation switch and a vibration feeding device. The feeding barrel is fixedly welded to the feeding support and provided with an observation window, a vibration feeding device is arranged at the bottom end of the feeding barrel, the top end and the bottom end of the feeding barrel are each provided with a set of correlation switches, the feeding barrel is covered with the sealing cover, a feeding pipe is arranged on one side of the sealing cover, and a servo motor is arranged in the center of the feeding pipe. A driving shaft of the servo motor is provided with a rotating shaft in the feeding barrel, a stirring rod and a stirring plate are arranged on the rotating shaft, and a scraping plate is arranged at the bottom end of the stirring rod. The material mixing device is good in material mixing effect and capable of automatically supplementing materials.

Description

technical field [0001] The invention relates to the technical field of extruder equipment, in particular to a co-rotating parallel three-screw extruder. Background technique [0002] According to the flow direction of the head and the angle between the centerline of the screw, the extruder can divide the head into a right-angle head and an oblique head. Extruders are divided into screw extruders and plunger extruders. The screw extruder relies on the pressure and shear force generated by the rotation of the screw, so that the material can be fully plasticized and evenly mixed, and then formed through the die. Plastic extruders can be basically classified into twin-screw extruders, single-screw extruders, and rare multi-screw extruders and non-screw extruders. [0003] At present, most of the twin-screw extruders in the market are twin-screw extruders. To achieve a certain mixing and mixing effect, twin-screw extruders often need a larger length-to-diameter ratio to achieve...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the twin-screw extruders in the market are twin-screw extruders. To achieve a certain mixing and mixing effect, twin-screw extruders often need a larger length-to-diameter ratio to achieve, so their output is relatively low and energy consumption is relatively high. Before feeding, due to the adhesion between the masterbatches, the masterbatches may be blocked during the mixing process and affect the rotation of the screw. Usually, the raw materials are buffered by the buffer device and then added to the screw extruder for granulation. The device includes a discharge box, and the mixed raw materials are first discharged into the discharge box for storage, and then transported to the feed port of the screw extruder by the motor, but the structure of the existing buffer device for the screw extruder is complicated, and after Multiple processes, inconvenient operation, is not conducive to the improvement of production efficiency, and the feed material is directly discharged into the screw rod, the screw rotates periodically, and the input raw material is unstable, which is not conducive to the twin-screw extruder to produce high-quality products

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