Plastic cleaning floatation device

Abstract

The invention belongs to the field of floatation devices, and particularly relates to a plastic cleaning floatation device. The plastic cleaning floatation device comprises a floatation base, a spiralblade A, a spiral blade B and the like, wherein the upper surface of the floatation base is provided with four continuous flotation tanks, and the bottoms of the four floatation tanks are provided with a delivery tank communicating with the four floatation tanks. By means of the plastic cleaning floatation device, waste plastic can be pre-cleaned before being floated, the pre-cleaned waste plastic mixture enters the floatation tanks to be floated, it is guaranteed that the floated plastic is cleaner, rapid recovery of the plastic is facilitated, the additional process of cleaning the plasticindependently is omitted, and the efficiency of plastic recovery is improved. After the pre-cleaned plastic mixture enters a liquid medium, large-area contamination caused by the plastic mixture to the liquid medium can be reduced, it is avoided that the density of the liquid medium changes as the liquid medium is contaminated by silt, the efficiency of plastic separation and recovery is improved,the replacement frequency of the floatation liquid medium is reduced, and thus the cost of the floatation liquid medium is reduced.

Description

technical field [0001] The invention belongs to the field of flotation devices, in particular to a plastic cleaning flotation device. Background technique [0002] In the prior art, the multi-stage flotation separation method for plastic mixtures is widely used, and liquid media of different densities need to be used in the multi-stage flotation separation process; the plastic mixture is sequentially subjected to flotation of low-density to high-density liquid media Finally, the separation and recycling of different density plastics in waste plastics is achieved. The problem with this method is that the flotation of waste plastics requires the participation of a variety of liquid media of different densities, the process is cumbersome, the flotation efficiency is low, and the cost of the liquid medium is high; When transferring from a liquid medium of lower density to a liquid medium of higher density, the unseparated plastic will partially bring the liquid medium of lower ...

AI Technical Summary

Problems solved by technology

The problem with this method is that the flotation of waste plastics requires the participation of a variety of liquid media with different densities, the process is cumbersome, the flotation efficiency is low, and the cost of liquid media is high; at the same time, when the unseparated plastics from When transferring from a lower-density liquid medium to a higher-density liquid medium, the unseparated plastic will partially carry the lower-density liquid medium into the higher-density liquid medium, resulting in the loss of the higher-density liquid medium. The density is reduced due to the dilution of the low-density liquid medium gradually brought in, which reduces the effect of the high-density liquid medium on the flotation separation of plastics; in order to avoid the unsatisfactory flotation effect caused by the dilution of the liquid medium, the liquid medium must be carried out frequently The replacement of the liquid medium leads to a further increase in the cost of the liquid medium

In addition, the above-mentioned density sorting technology is generally applied to the sorting of plastics with a density higher than water. When it is applied to the sorting of low-density plastics, 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. Density, because you need to use a solvent with a density lower than water, so the cost is higher than sorting high-density plastics

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