Material separation device on basis of friction static electricity

Abstract

The invention relates to a material separation device on the basis of the friction static electricity, which comprises a rack, a drive mechanism, a static generating device, a high voltage electric field separation system and a receiving device. The drive mechanism is arranged on the rack and is connected with the static generating device to drive the static generating device to rotate; the static generating device is arranged above the drive mechanism; the high voltage electric field separation system is arranged below the static generating device; and the receiving device is arranged below the high voltage electric field separation system. According to the invention, by utilizing a principle that different materials have different dielectric constants, the materials are rubbed mutually to respectively generate and carry positive and negative charges and then the positive and negative charges are separated after passing through a high voltage electric field. The material separation device on the basis of the friction static electricity has the advantages of high separating efficiency, low production cost, low labor intensity, no pollution and low energy consumption and can be used for separation operation of various materials, particularly plastics.

Description

Technical field [0001] The invention relates to a material separation device, in particular to a material separation device based on friction static electricity, and belongs to the technical field of material processing. Background technique [0002] China has become a major producer and consumer of household appliances and automobiles. According to a survey conducted by the National Bureau of Statistics, there are currently about 350 million TV sets in my country, 170 million washing machines, 130 million refrigerators, and 100 million motor vehicles. Now, on average, more than 5 million TV sets, about 5 million washing machines, and 4 million refrigerators are required to be scrapped across the country every year. In short, my country will eliminate more than 15 million used home appliances and more than 2 million used cars every year. Due to the large amount of plastic used in home appliances and automobile parts, a large amount of waste plastic will be generated from scrappe...

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Problems solved by technology

However, the vast majority of waste plastic processing enterprises in my country are in a low-level, small, scattered, and chaotic state. Generally, they still stay in the backward operation mode of a three-in-one family workshop integrating production, housing, and warehouses. Most of them use manual sorting. There are problems such as slow sorting speed, high labor intensity, and small production scale; a small number of production enterprises that use the sink-float method for sorting, because many plastic products use a large number of additives, the density of waste is compared with pure plastic raw materials. Therefore, in the sorting process, different waste plastics will still overlap and mix due to similar densities, so it is difficult to separate these plastics using the sink-float method, resulting in the lack of high sorting accuracy. waste water

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