Nonstop self-cleaning long-acting filter for extruding machine

Abstract

The invention relates to a nonstop self-cleaning long-acting for an extruding machine, which comprises a filtering cartridge casing and a filtering device, wherein the filtering cartridge casing is provided with a feed opening and a discharge hole; two sets of standby filtering devices which can work in turn are arranged in an inner cavity of a filter screen casing in parallel; an outlet reversing valve is arranged at the discharge end; an outlet of the outlet reversing valve is communicated with the discharge hole; a plug is arranged at one end of the filtering device and is detachably arranged in the filtering cartridge casing; an inlet reversing valve and the outlet reversing valve respectively comprise a reversing valve core and a mounting base body; the mounting base bodies are arranged on the filtering cartridge casing; the extending end of each reversing valve core penetrates through each mounting base body and extends out of the filtering cartridge casing; a distributing opening is arranged on the outlet reversing valve; discharge openings are arranged on cavities of the filtering cartridge casing, which correspond to the two sets of filtering devices; and plugs are correspondingly arranged on the discharge openings. According to the nonstop self-cleaning long-acting disclosed by the invention, two parallel filtering devices are adopted to realize the nonstop net replacing operation, realize the function of automatic cleaning and meet the requirement for continuous production.

Description

technical field [0001] The invention relates to the technical field of filters for plastic machinery, in particular to a self-cleaning non-stop long-term filter for extruders. Background technique [0002] In plastic machinery, the filter is also a key component. The plastic raw material is extruded by the heating screw of the extruder and then enters the filter screen device. Since most of the plastic raw materials cannot be used to produce products from brand new materials, it is necessary to add various Auxiliary raw materials, such as color materials, modifiers, etc., will also add a certain proportion of recycled materials to recyclable plastics. Since these auxiliary materials contain more impurities, impurities in extruded products will affect the post-processing of the product And use, the filter can filter the material and improve the mixing effect of the material, so the filter has become an indispensable part. A traditional long-term filter includes a filter cart...

AI Technical Summary

Problems solved by technology

It has an impact on the subsequent process of continuous production. After the shutdown is replaced and the filter is repaired, it needs to be heated again and re-enter the subsequent process, which wastes energy, produces defective products, and causes waste.

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