Extrusion filter

Abstract

The invention belongs to the technical field of plastic granulation and relates to an extrusion filter. The extrusion filter comprises a casing, a feeding connector arranged on the casing, a heating temperature control device and a material extrusion device; a discharging port of the material extrusion device is connected with an impurity filter with a filter screen; an impurity scraping and discharging device for scraping impurities on the filter screen into an impurity storage cavity and discharging the impurities to the outside of the impurity filter is arranged in an inner cavity of the impurity filter; the filter screen formed by a plurality of radially-arranged filtering holes is arranged on the side wall of the inner cavity of the impurity filter; and a discharging connector communicated with a discharging cavity at the outer side of the filter screen is arranged on the outer wall of the impurity filter. The extrusion filter has the benefits that the impurities generated in the granulation and the production of the extrusion filter can be cleared without machine halt; and the extrusion filter has the advantages of easiness in structure manufacture, high strength, uneasiness in blockage, long service life, high production efficiency and low production cost and is suitable for the granulation of waste plastics.

Description

technical field [0001] The invention belongs to the technical field of plastic granulators, in particular to an extrusion filter. Background technique [0002] At present, waste plastic bags, waste plastic sheets and other waste plastics are generally used as raw materials for granulation by extrusion filters. Since the waste plastics are not cleaned before being put into equipment, during the process of granulation, Some impurities mixed with lime sand isosceles to block the filter screen, so that the equipment cannot work normally. The solution is to stop the machine to remove the impurities and continue production. Every time the impurities are removed, a large amount of them needs to be burned (wasted) and remain in the inner cavity of the equipment. The plastic raw materials in the process are labor-intensive, time-consuming and labor-intensive, with low production efficiency and high production costs. Contents of the invention [0003] The purpose of the present inv...

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Problems solved by technology

[0002] At present, waste plastic bags, waste plastic sheets and other waste plastics are generally used as raw materials for granulation by extrusion filters. Since the waste plastics are not cleaned before being put into equipment, during the process of granulation, Some impurities mixed with lime sand isosceles to block the filter screen, so that the equipment cannot work normally. The solution is to stop the machine to remove the impurities and continue production. Every time the impurities are removed, a large amount of them needs to be burned (wasted) and remain in the inner cavity of the equipment. The plastic raw materials in it are labor-intensive, time-consuming and labor-intensive, with low production efficiency and high production cost

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