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Twisting device for preparing hollow fiber membrane

A fiber membrane and twisting technology, which is applied in the field of hollow fiber membrane manufacturing equipment, can solve the problems of easy distortion and affecting the quality of hole hollow fiber membranes.

Inactive Publication Date: 2012-07-18
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the tubular raw silk is unwound to make skein, the hollow fiber will produce twist, and the hollow fiber with twist is easy to twist when stretched, which will affect the quality of the hollow fiber membrane caused by stretching.

Method used

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  • Twisting device for preparing hollow fiber membrane

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Embodiment Construction

[0008] Further describe the present invention below in conjunction with embodiment and accompanying drawing thereof. The specific examples are only for further clearly illustrating the skeining device of the present invention for producing hollow fiber membranes by stretching and pore formation, and do not constitute limitations on the claims of the present invention.

[0009] The skeining device of the present invention for preparing hollow fiber membranes by stretching holes is composed of an untwisting system 1 and a skein winding system 2 when the precursor is unwound (see figure 1 ). Unwinding system 1 is made up of frame 11, transmission pulley 12,12 ', variable frequency speed regulating motor 13, guide wire hook 14,14 ';

[0010] During skeining processing, firstly hang the polypropylene hollow fiber precursor filament tube to be post-stretched-heat-setting on the frame of the unwinding device 1, and the precursor filament bundle passes through the guide wire hooks 14...

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Abstract

The invention relates to a twisting device for preparing a hollow fiber membrane by drawing and hole forming. The device comprises an untwisting system for untwisting strands, a reeled silk twisting system and a PLC (Programmable Logic Controller). The device is characterized in that the untwisting system is composed of a rotary rack, a variable-frequency and variable-speed motor and a filament guide hook; the reeled silk twisting system is composed of a rectangular twisting frame and a variable-frequency and variable-speed motor; and the two variable-frequency and variable-speed motors of the untwisting system and the twisting system are connected with the PLC respectively. The device is capable of preparing the reeled silk without twist and is beneficial to the preparation of high-quality hollow fiber microfiltration membrane.

Description

technical field [0001] The invention relates to a manufacturing equipment technology of a hollow fiber membrane, in particular to a manufacturing technology of a twisting device for preparing a stretch-caused hollow fiber membrane. The international patent main classification number is proposed to be Int.CI7.BOID.71 / 00. Background technique [0002] Hollow fiber membrane is one of the important types of separation membranes. It has been widely used in the field of membrane separation technology because of its high packing density, no support material, simple production process, and device miniaturization. [0003] The stretching porogenation method is one of the important methods for preparing separation membrane materials. Generally, the hollow fiber membranes prepared from polyolefin materials adopt the uniaxial stretching porogenation method. If the polypropylene hollow fiber is stretched and heat-set at a temperature lower than the melting temperature of the polymer and...

Claims

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Application Information

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IPC IPC(8): B01D67/00B01D69/08
Inventor 安树林肖长发张宇峰马三妮
Owner TIANJIN POLYTECHNIC UNIV
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