High-temperature and high-pressure valve type combined melt filter strip

Abstract

The invention relates to the technical fields of granulation and spinning, and discloses a high-temperature and high-pressure valve type combined melt filter strip. The high-temperature and high-pressure valve type combined melt filter strip comprises a thick-wall filter element pipe, a filter screen sleeve and a locking nut, wherein the filter screen sleeve is arranged on the outer side of the thick-wall filter element pipe in a sleeving mode, and sealing connecting pieces are arranged at end openings in the two ends of the filter screen sleeve respectively; the right side of the thick-wall filter element pipe is connected with the locking nut; the thick-wall filter element pipe is connected with a port in the right end of the filter screen sleeve through the locking nut on the right side; melt valve structures are arranged at the joints of the outer edge of the left end of the thick-wall filter element pipe and the left side of the locking nut respectively; and the thick-wall filterelement pipe and the locking nut are respectively connected with the sealing connecting pieces at the two ends of the filter screen sleeve through the melt valves to form a forced sealing structure. According to the high-temperature and high-pressure valve type combined melt filter strip, the filter screen sleeve is connected with a valve type sealing element of the thick-wall filter element pipe,and a high-temperature and high-pressure melt is forcibly sealed by adopting the valve type forcible sealing element, so that no leakage point in a true sense is realized.

Description

technical field [0001] The invention relates to the technical field of granulation and spinning, in particular to a high-temperature and high-pressure valve-type combined melt filter bar. Background technique [0002] Melt filter strip is a part of melt filter, which is an important equipment for high-speed spinning and fine-denier spinning. It is used for continuous filtration of polymer melt to remove impurities and unmelted particles in the melt. Particles to improve the spinning performance of the melt and ensure the spinning quality. [0003] The high-temperature and high-pressure melt filter strips on the existing market generally have the following defects: [0004] The combined filter bar is sealed and connected with the end face of the core tube by the mesh sleeve, the leakage point is obvious, the spinning cycle of the spinning assembly is not more than 3 days, and the inner core tube (wall thickness is less than 5mm), the inner diameter is large, the nest materia...

AI Technical Summary

Problems solved by technology

[0007] The invention provides a high-temperature and high-pressure valve-type combined melt filter bar, which has the advantage of no leakage point, and solves the problems of the existing filter bar such as easy leakage, serious viscosity degradation, large residues, and large waste of raw materials.

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