Spinning dope filter

Abstract

The invention relates to a spinning dope filter, which comprises a filtering device and a switching device connected with each other through a flange. The spinning dope filter is characterized in that the filtering device comprises a body (1) and two filter cylinders (2), the body (1) in a jacket structure is provided with two parallel through cavities in the center, the two filter cylinders (2) are arranged in the two through cavities respectively, a jacket is welded outside the cavities, an electric heating tube and a heating medium are arranged in the jacket, an insulation material is arranged between the outer side of the jacket and the peripheral frame, the filter cylinders (2) are connected to an independent dope inlet tube and an independent dope outlet tube respectively, the dope inlet tube above the dope outlet tube are respectively connected with the body (1), and one end of the dope inlet tube and one end of the dope outlet tube outside the body (1) are connected with independent flanges respectively. When in need of cleaning, the spinning dope filter can be independently demounted into a plurality of parts and no cleaning dead area exists in a whole dope duct, so that cleanness and smoothness of the dope duct in reuse are guaranteed.

Description

technical field [0001] The invention relates to a slurry filter, in particular to a slurry filter for spinning whose slurry pipeline can be disassembled and cleaned, and belongs to the field of textile machinery. Background technique [0002] In the spinning process of polymers, filters are often used to filter out impurities or gel particles in the melt or slurry, so as to improve the spinning performance of the melt or slurry, prolong equipment life, increase production and ensure product quality . In order to improve efficiency, the general filter is designed as a switchable structure, such as in the production of aramid 1414 fiber, it is one of the essential equipment. The structure of the melt filter currently on the market is not very suitable for the production of aramid 1414 fiber polymerization and spinning. The main reason is that the current mainstream aramid 1414 fiber spinning process basically uses concentrated sulfuric acid as a solvent for spinning, and the...

AI Technical Summary

Problems solved by technology

When the filter element is clogged and needs to be switched or shut down, the slurry staying in the pipeline is not easy to discharge cleanly, and it is easy to cause the slurry to agglomerate after the concentrated sulfuric acid absorbs water due to entering the air.

However, this type of filter is generally of an integral structure, and the internal melt pipeline arrangement is very complicated, which is not easy to clean. Once the slurry is agglomerated, the slurry pipeline is often blocked, which affects production and may even affect the service life of the equipment.

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