Non-meshing double-mixing rotor for continuous internal mixer

Abstract

The invention relates to a non-meshing double-mixing rotor for a continuous internal mixer. The rotor comprises a pair of rotor bodies rotating relatively, wherein each rotor body is provided with a material discharging section, a material conveying section and an additive adding section respectively; a first internal mixing section used for dispersing and preheating materials is arranged on the material conveying section and the additive adding section respectively; a second internal mixing section used for melting and mixing the materials is arranged between the material discharging section and the additive adding section; both the first internal mixing section and the second internal mixing section are provided with double-ended positive and negative direction threads; and the additive adding section and the material conveying section have threaded shapes. The rotor is a non-meshing rotor which increases promotes the dispersion and preheating of the materials to ensure that the materials difficult to disperse are uniformly mixed, have capacities of forcible conveying and plasticizing and strong mixing; the rotor is suitable for high-devolatilization components and particularly suitable for mixing the materials which are difficult to disperse; the non-meshing double-mixing rotor and an evolved type rotor thereof can be used for mixing a material which has a high shearing rate and a high temperature, and can also be used for mixing a material which has a low shearing rate and is more sensitive to temperature.

Description

technical field [0001] The invention relates to a rotor structure, in particular to a material double-mixing rotor for a continuous internal mixer. Background technique [0002] Internal mixer is one of the main equipment for plastic compounding, which can be divided into batch type and continuous type according to the working principle. It consists of a mixing chamber, a rotor, an upper top bolt (pressing device), a lower top bolt (unloading device), a heating and cooling device, and a transmission system. Its working principle is: the mixed material enters the mixing chamber from the hopper, and is subject to constant shearing and kneading in the gap between two relatively rotating rotors, the gap between the rotor and the inner wall of the mixing chamber, and the gap between the rotor and the upper and lower top bolts. Refining and friction make the plastic heat and plasticize, and mix evenly. [0003] The main structural parameters of the internal mixer are the rotor s...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that it is difficult to disperse and mix materials with high mixing shear rate and temperature, the purpose of the present invention is to provide a non-meshing continuous internal mixer with uniform mixing, forced conveying plasticizing ability and strong mixing ability. Double mixing rotors, suitable for high devolatilization, especially suitable for mixing materials that are difficult to disperse

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