Hollow fiber membrane stretching device

Abstract

The invention discloses a hollow fiber membrane stretching device which comprises a tension roller group, a setting component, a yarn unreeling roller, a rolling roller and a pressing roller, wherein the tension roller group comprises an upper roller and a lower roller; a hollow fiber membrane is wound between the upper roller and the lower roller in an S shape; the setting component comprises a setting device used for heating the hollow fiber membrane; at least two tension roller groups are arranged on the setting component; the upper roller and the lower roller are arranged on two sides of the setting component opposite to each other and are vertically arranged; the wire uncoiling roller is arranged at the front end of the tension roller group; the rolling roller is arranged at the rear end of the tension roller group; the rolling speed is consistent with that of the tension roller in a setting area; a gap used for allowing the hollow fiber membrane to pass is formed between the pressing roller and the upper roller; multiple tension groups are arranged, a speed ratio is formed, and the aim of stretching the fiber membrane to form a hole is fulfilled; and the passing speed of the fiber membrane is consistent with that of the last stretched roller in the setting area, and the stressed tension is kept consistent during passing. Therefore, the efficiency and the product quality are improved.

Description

technical field [0001] The invention relates to the technical field of filter membrane production and manufacturing, and more specifically relates to a hollow fiber membrane stretching device. Background technique [0002] Hollow fiber membrane is a separation membrane of selectively permeable hollow fiber with micropores in the fiber wall, and its micropore size is on the order of nanometers to micrometers. [0003] At present, in the manufacturing process of hollow fiber membranes on the market, stretching step by step is mainly used. In this way, there are the following technical problems: the stretching length of a single membrane filament is limited, the later processing is difficult, the material waste is large, the efficiency is low, the energy consumption is large, and the stretching thickness of the membrane filament is uneven. [0004] To sum up, how to solve the problem of low product quality caused by the uneven tensile strength existing in the fiber film stretc...

AI Technical Summary

Problems solved by technology

In this way, there are the following technical problems: limited stretching length of a single membrane filament, difficult post-processing, large material waste, low efficiency, high energy consumption, and uneven stretching thickness of the membrane filament.

[0004] In summary, how to solve the problem of low product quality caused by the uneven tensile strength existing in the fiber film stretching process has become an urgent problem to be solved by those skilled in the art.

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