Twin-screw granulator for producing biodegradable films

Abstract

The invention discloses a twin-screw granulator for producing biodegradable films. The twin-screw granulator comprises a first driving motor, a reduction gearbox, a forced feeding device, a feeder, conical screws, a granulating device, a rack and a feeding device, wherein the first driving motor is installed above one end of the rack, the reduction gearbox is arranged on one side of the first driving motor, one end, which is far from the first driving motor, of the reduction gearbox is connected with the feeding device, a hopper is arranged above the horizontal section of the forced feeding device, the conical screws are movably connected to the other end of the feeder, and one end, which is far from the feeder, of each conical screw is led into the granulating device. The twin-screw granulator has the advantage of simple structure; the structural design of the two conical screws is adopted, so that the tip stress concentration of the two conical screws is greatly reduced, the effect and efficiency of the granulator are increased, and the service life of the granulator is prolonged; and the two conical screws rotate at high speed in the same direction, so that the twin-screw granulator has the advantages of low energy consumption, simplicity in operation and the like, and the granulation quality is guaranteed.

Description

technical field [0001] The invention relates to the technical field of granulators, in particular to a twin-screw granulator for biodegradable film production. Background technique [0002] Screw granulator is a molding machine that can make materials into specific shapes. At present, screw granulator can be divided into single-screw granulator and twin-screw granulator. Single-screw granulator is the most important part of extruder. Components, which are directly related to the application range and productivity of the extruder, are made of high-strength and corrosion-resistant alloy steel; while the twin-screw granulator is mainly used for filling, blending, modifying, increasing , chlorination, polypropylene and superabsorbent resin processing, currently the twin-screw granulator for plastic granulation production mainly includes parallel twin-screw granulator and conical twin-screw granulator; due to the current conical twin-screw granulator The length-to-diameter ratio...

AI Technical Summary

Problems solved by technology

[0002] Screw granulator is a molding machine that can make materials into specific shapes. At present, screw granulator can be divided into single-screw granulator and twin-screw granulator. Single-screw granulator is the most important part of extruder. Components, which are directly related to the application range and productivity of the extruder, are made of high-strength and corrosion-resistant alloy steel; while the twin-screw granulator is mainly used for filling, blending, modifying, increasing , chlorination, polypropylene and superabsorbent resin processing, currently the twin-screw granulator for plastic granulation production mainly includes parallel twin-screw granulator and conical twin-screw granulator; due to the current conical twin-screw granulator The length-to-diameter ratio of the granulator is relatively small, and the taper of the screw is relatively large, so the speed of the screw cannot be too high, otherwise the screw will be broken, thus reducing the output per unit time and increasing the energy consumption per unit output. The twin-screw granulator used in the production of biodegradable film has disadvantages such as poor plasticizing performance, low output, and high energy consumption.

Images