Wire mesh-free filter

Abstract

The present invention discloses a wire mesh-free filter, which comprises a filtration portion and an impurity removal portion, wherein the filtration portion comprises a motor and a box, wherein the output shaft of the motor extends into the box, the upper portion of the motor is sequentially assembled with a scrape cutter, a filtration screen plate and a bottom net, the filtration screen plate is uniformly distributed with a plurality of virtual rounds, a plurality of filtration holes are uniformly distributed in the virtual rounds, a plurality of meshes having the same number as the virtual rounds on the filtration screen plate are arranged on the bottom net, the meshes and the virtual rounds are correspondingly arranged, and the cross section diameter of the mesh and the diameter of the virtual round are the same. According to the present invention, the filtration holes on the filtration screen plate are uniformly distributed on the plurality of the virtual rounds, and the diameter of the virtual round and the cross section diameter of the bottom net on the lower portion of the filtration screen plate are the same, such that the fine material filtered from the filtration holes can completely pass through the meshes and enter the first chamber, and then flows out, the filtration efficiency is high, and the phenomenon that the adverse filtration effect exists when the filtration hole contacts the hole-free space of the bottom net can not be produced.

Description

technical field [0001] The invention relates to a filter device, in particular to a filter without a wire mesh, and belongs to the technical field of plastic granulation filter devices. Background technique [0002] At present, in the plastic processing and granulation industry, it is necessary to filter the molten material before it enters the first screw extruder for granulation, so as to filter out the impurities in the molten material. The front end of the first screw extruder is filtered with a filter, which mainly has the following defects: 1. The wire mesh or screen is limited by its own structure, and its mesh is easily deformed under the extrusion of raw materials. , which in turn leads to a decline in the uniformity of the filtered particles, which seriously affects the later use of plastic particles; 2. After a period of use, the surface of the filter screen will become more dirty, and the filter screen needs to be replaced. Basically, it needs to be replaced ever...

AI Technical Summary

Problems solved by technology

[0002] At present, in the plastic processing and granulation industry, it is necessary to filter the molten material before it enters the first screw extruder for granulation, so as to filter out the impurities in the molten material. The front end of the first screw extruder is filtered with a filter, which mainly has the following defects: 1. The wire mesh or screen is limited by its own structure, and its mesh is easily deformed under the extrusion of raw materials. , which in turn leads to a decline in the uniformity of the filtered particles, which seriously affects the later use of plastic particles; 2. After a period of use, the surface of the filter screen will become more dirty, and the filter screen needs to be replaced. Basically, it needs to be replaced every 3 minutes, that is Frequent replacement of the filter screen is required, which increases the labor intensity of the staff, reduces work efficiency, and increases the cost of the filter screen. Even if the filter screen is to be reused, the filter screen needs to be sintered at high temperature, otherwise it will pollute Seriously, this not only increases the production process, but also increases the difficulty of operation

In addition, when the transmission shaft is in contact with the filter plate and the support plate during the rotation, iron filings will be generated due to friction, and the iron filings will stick to each other due to heat generation, which is prone to lock-up and cause filter failure. Increased maintenance costs

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