System for separating plastic from city garbage

Abstract

The invention discloses a system for separating plastic from city garbage. The system comprises a magnetic separation device, a drying device, a screening device, a smashing device, a wind power shaking table separation device and an electrostatic separation device in sequence. The processes of household garbage, magnetic separation, drying, screening, smashing, wind power shaking table separation, electrostatic separation and waste plastic are implemented. 95% or above of plastic in the household garbage is separated, the separated plastic has higher purity, the content of impurities in the plastic is very low, the waste garbage is recycled more conveniently in the future, the recycle cost is saved, and the problem caused by impure raw materials in the reprocessing process is solved.

Description

technical field [0001] The invention belongs to the field of garbage recycling, in particular to the field of plastic recycling, in particular to a system for sorting plastics from urban garbage. Background technique [0002] The composition of urban domestic waste is complex, and a large amount of waste plastics are contained in domestic waste. If the waste plastics in these domestic wastes can be recycled, waste can be turned into treasure. At present, domestic recycling methods mostly adopt vibrating screen sorting, a single drum screen and manual sorting methods. The sorting efficiency is low, and the operating environment for workers is poor, which affects the utilization of recyclables. The waste plastics in domestic garbage have not been fully utilized. . [0003] Moreover, because the composition of the garbage is extremely complex, which contains a large amount of materials with a density similar to that of plastic or paper, and is often mixed with plastic or paper...

AI Technical Summary

Problems solved by technology

At present, domestic recycling methods mostly adopt vibrating screen sorting, a single drum screen and manual sorting methods. The sorting efficiency is low, and the operating environment for workers is poor, which affects the utilization of recyclables. The waste plastics in domestic garbage have not been fully utilized.

[0003] Moreover, because the composition of the garbage is extremely complex, which contains a large amount of materials with a density similar to that of plastic or paper, and is often mixed with plastic or paper, the simple air separation method has low separation efficiency. Contains a lot of sundries, such as twigs, cigarette butts, etc., must be equipped with impurity removal process or mechanical removal of sundries in the follow-up process, resulting in numerous processes, high manual operation intensity, poor effect, low efficiency, and increased operating costs cost

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