Double-conical-rotor continuous mixing unit

Abstract

The invention provides a double-conical-rotor continuous mixing unit. The mixing unit mainly comprises a mixing part and a discharging part and can adopt a single-band or dual-band mode; wherein the mixing part mainly comprises a charging device, a cylinder, conical rotors, heating and cooling devices and a transmission device; the two mixing rotors are conical and the center lines of the two rotors form a certain angle when the two rotors are installed; the outer diameter outline of each mixing rotor is gradually reduced and is conical; the mixing rotors are provided with charging segments and mixing segments; the rotors on the charging segments adopt screw conveying structure; seen from the angle vertical to the conical surfaces of the outer outlines of the rotors, the structures of the mixing segments have the typical rotor characteristics such as cam shape, S shape or four-wing shape; when the mixing unit adopts the single-band mode, the tail ends of the rotors adopt the screw structure and pressure is created to convey the materials to the head; and when the mixing unit adopts the dual-band mode, the mixed materials enter into next band of screw extruder via a valve and pressure is created to convey the materials to the head; the mixing unit in any one of the two modes adopts the head fit for the cavity for pelleting or forming; a melt pump can be connected in front of the head; and two rotors can rotate at the same speed or different speed and form a plurality of shearing, drawing and kneading zones during rotation, and exchange of materials among the rotors is more frequent, thus effectively improving the plasticating, melting and dispersing properties of equipment, shortening the processing time and improving the yield. The mixing unit can be used in such processes as mixing, pelleting and the like during processing rubbers, coatings, propellants, explosives, paper pulp, plastics, food, medicaments, feeds and the like.

Description

technical field [0001] The invention relates to a conical double-rotor continuous mixing unit, which can be used in the mixing and granulation process of rubber, paint, propellant, explosive, paper pulp, plastic, food, pharmacy, feed and the like. Background technique [0002] Mixing is a key process link that determines the performance of polymer products, especially for high viscoelastic materials such as rubber. The uniformity and stability of material mixing is the key to ensure the quality of polymer products. The realization of uniform mixing mainly depends on mixing technical equipment, including open mixer, internal mixer, double-rotor continuous mixer and screw extruder. Industrially, screw extruders are mainly used for plasticizing plastics, food and thermoplastic elastomers, while the other three are mainly used for mixing complex materials such as rubber, coatings, explosives and propellants. Open mills and internal mixers are batch mixing equipment, which are ...

AI Technical Summary

Problems solved by technology

Open mixer and internal mixer are batch mixing equipment, not only low in efficiency, but also difficult to achieve the same mixing quality of different batches of materials

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