Prewashing device for plastic recycling

Abstract

The invention belongs to the field of flotation devices, and particularly relates to a prewashing device for plastic recycling. The device comprises a water tank, a spiral piece A, a washing mechanism, a collecting mechanism, and the like, wherein an inner cavity of the water tank is divided into a mounting groove and four continuous flotation grooves in the length direction of the water tank, andtransmission grooves communicating with the mounting groove and the four flotation grooves are formed in the bottom in the water tank. According to the prewashing device for plastic recycling, a flotation liquid medium is single, the problem of mutual pollution and dilution of the liquid medium does not exist, the flotation effect of the prewashing device is obvious, the flotation efficiency is high, and the cost of the single flotation liquid medium is low.

Description

technical field [0001] The invention belongs to the field of flotation devices, in particular to a pre-cleaning device for recycling plastics. Background technique [0002] As the consumption of plastic products continues to increase, waste plastics also continue to increase; if these waste plastics are not properly stored, transported, and processed, they will inevitably damage the environment and endanger the health of the people. There are many types of waste plastics that often appear in the form of mixing together and have different uses. At this time, it is necessary to classify and recycle these mixed plastic mixtures so that the plastics can be fully recycled and reused, reducing the impact of waste plastics on the environment. pollution. [0003] In the prior art, the plastic mixture is reclassified and recycled by means of multi-stage flotation separation. Liquid media with different densities must be selected for each flotation process, and the density of the liq...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the plastic mixture is reclassified and recycled by means of multi-stage flotation separation. Liquid media with different densities must be selected for each flotation process, and the density of the liquid media selected in turn is getting higher and higher. Plastics in different density ranges are separated; after each flotation process is completed, the unseparated plastic mixture must be manually transferred to the flotation equipment in the next process. This flotation separation method has a low degree of automation and flotation efficiency Lower; when the unseparated plastic mixture transfers from a less dense liquid medium to a higher density liquid medium, the unseparated plastic mixture will carry the less dense liquid medium to the higher density liquid medium , after repeated long-term use, the higher-density liquid medium will be gradually diluted, resulting in a decrease in the density of the higher-density liquid medium, increasing the frequency of liquid medium replacement, and increasing the cost of flotation

[0004] In addition, liquid media of different densities need to be used in the multi-stage flotation separation method, resulting in higher cost of liquid media; in addition, the above-mentioned density separation technology is generally applied to the separation of plastics with a density higher than water. When applied to low-density plastics When sorting, that is, for the sorting of plastics with a density lower than water, the density of water is reduced by adding substances to the water. Because a solvent with a density lower than water needs to be used, the cost is higher than that of sorting high-density plastics

At the same time, the separated plastics are mainly collected manually, with low collection efficiency and low collection automation

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