Extruder unit

Abstract

The invention relates to an extruder unit. The extruder unit comprises a first extruder, wherein a heating area, a melting area, a mixing area, a screen exchanger and a static mixer are sequentially arranged in the first extruder; an outlet of the static mixer is communicated with an inlet of a melt pump through a pipeline; an outlet of the melt pump is communicated with a feeding opening of a second extruder through a pipeline. The extruder unit has the advantages that the first extruder is connected with the second extruder through the melt pump, so that mixing extrusion force transiting from the first extruder to the second extruder can be effectively reduced, and the working efficiency is correspondingly improved; a back-leakage prevention sealing device is arranged in front of the feeding opening of the second extruder, so that the sealing performance of the feeding opening of the second extruder is improved; meanwhile, the extruder unit is capable of preventing back-leakage air from flowing out of a rotary gap when a screw rod rotates and extrudes, and thus the quality of products is guaranteed, the pressure leakage of the extruder is avoided and a power device can save certain power energy.

Description

technical field [0001] The invention relates to the technical field of extruders, in particular to an extruder unit. Background technique [0002] Among the current traditional extruders, the most basic and common one is the single-screw extruder, which mainly includes five parts: transmission, feeding device, barrel, screw, head and die. The transmission part is usually composed of a motor, a gearbox and a bearing to drive the screw to work. During the extrusion process, the screw speed must be stable and cannot change with the change of the screw load, so that the quality of the obtained product can be kept uniform; Generally, pellets are mostly used for feeding, but strip materials or powder materials can also be used. The feeding equipment usually uses a conical feeding hopper, and its volume is required to provide at least one hour's dosage; the screw is the heart of the extruder and is the The performance of the screw, the key component of the extruder, determines the...

AI Technical Summary

Problems solved by technology

[0003] The traditional extruder unit usually directly connects the static mixer of the first extruder with the feed port of the second extruder. Although this connection method can effectively mix the extrusion effect, but its own The required extrusion pressure is higher, and more kinetic energy is needed to supplement the consumed energy, and the work efficiency is relatively low, and the quality of the product is relatively poor.

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