A backwash automatic slag discharge filter without wire mesh

Abstract

The invention belongs to the technical field of a filter of plastic machinery, and particularly relates to an automatic backwash screen-mesh-free slag discharging filter. The automatic backwash screen-mesh-free slag discharging filter comprises a filter box body, wherein the filter box body comprises a feeding box body and a discharging box body, a feeding cavity is formed on the inner wall of the feeding box body, a material inlet is formed in the feeding cavity, a discharging cavity is formed in the inner wall of the discharging box body, and a material outlet is formed in the discharging cavity; the feeding box body and the discharging box body are in butt joint with each other to form a slide cavity, a filter screen plate which makes left-right movement relative to the slide cavity is arranged in the slide cavity, the feeding cavity and the discharging cavity are separated by the filter screen plate, and two filter screen plate drive mechanisms respectively for driving the filter screen plate to move leftwards or rightwards are arranged below the filter box body; and a backwash apparatus for washing the filter screen plate is respectively arranged at two sides of the discharging cavity inside the discharging box body; and a slag removal mechanism for scraping filter slag on the surface of the filter screen plate is arranged inside the feeding box body.

Description

technical field [0001] The invention belongs to the technical field of plastic machinery filters, in particular to a backwash automatic slag discharge filter without wire mesh. Background technique [0002] In plastic machinery, the filter is a key component. The plastic raw material enters the filter device after being extruded by the heating screw of the extruder. Since most of the plastic raw materials cannot be made of brand new materials, various auxiliary materials need to be added during the production process. 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 and processing of products. The use of the filter allows the material to be filtered and can improve the mixing effect of the material, so the filter becomes an indispensable part. At present, the filter o...

AI Technical Summary

Problems solved by technology

At present, the filter on the extruder uses a lot of filters. During a long period of use, the impurities on it will accumulate and affect the filtration performance. Therefore, when the filter is blocked, the filter should be replaced in time, and the machine must be shut down when replacing the filter. , when replacing the clogged filter screen, it will affect the subsequent process of continuous production. After the machine is shut down to replace the filter screen and repaired, it needs to re-heat and re-enter the subsequent process, which wastes energy, produces defective products, and causes waste.

Images