Membrane filament leak detection device in PVDF hollow fiber membrane production

A technology of fiber membranes and membrane filaments, which is applied in the field of membrane filament leak detection devices in the production of PVDF hollow fiber membranes, can solve the problems of detection water pollution, reduce the practicality of the device, and inconvenience, and achieve the advantages of accelerating evaporation, avoiding pollution, and good preservation Effect

Pending Publication Date: 2021-05-28
陈晓坤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, when the membrane filaments in the production of hollow fiber membranes are leak tested, it is usually necessary to put each section of the hollow fiber membrane filaments into the water, and inject gas into the hollow fiber membrane filaments to detect the leakage of the hollow fiber membrane filaments, but It is often necessary to manually pass the hollow fiber membranes through the guide wheels in the pool so that each section of the hollow fiber membranes can always be in the water. When replacing a new set of untested hollow fibe

Method used

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  • Membrane filament leak detection device in PVDF hollow fiber membrane production
  • Membrane filament leak detection device in PVDF hollow fiber membrane production
  • Membrane filament leak detection device in PVDF hollow fiber membrane production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1, such as Figure 1-7 As shown, when new hollow fiber membrane filaments need to be replaced, the electric pneumatic cylinder 306 is first controlled to raise the connecting plate 303 and the second U-shaped frame 304 so that they leave the inside of the pool 7, and then the hollow fiber membranes can be directly One end of the membrane wire is passed from one side of the pool 7 to the other side, and then the second electric lifting rod 211 is controlled to drive the U-shaped top plate 206 to rise, so that the U-shaped top plate 206 and the dewatering bin 208 are separated, and then each group of hollow The fiber membranes are clamped into the corresponding semicircular through holes 210, and the hollow fiber membranes are also clamped into the corresponding annular grooves on the outside of the fourth guide roller 207, and then the heads of multiple groups of hollow fiber membranes are fixed on the package. the inner side of the drum 105, and clamp and seal t...

Embodiment 2

[0045] Example 2, such as Figure 1-7 As shown, when it is necessary to dry the surface of the hollow fiber membrane, the hollow fiber membrane is pulled by the drum 105 to move the hollow fiber membrane. The air pump 203 blows air into the inside of the trapezoidal warehouse 205, and the electric heating rod 202 inside the trapezoidal warehouse 205 is energized to generate heat, so that hot air is ejected from the top of the trapezoidal warehouse 205, and passes between the fourth guide roller 207 and the fifth guide roller 209. The hollow fiber membranes are dried with hot air.

[0046]Working principle: connect the device to the power supply before use, first put the rolled hollow fiber membrane reel on the outside of the first rotating rod 4, then control the electric pneumatic cylinder 306 to lift the connecting plate 303 and the second U-shaped frame 304 High, so that it leaves the inside of the pool 7, at this time, one end of the hollow fiber membrane can be directly ...

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Abstract

The invention discloses a membrane filament leak detection device in PVDF hollow fiber membrane production. The device comprises a mounting table, wherein a U-shaped bin is mounted on one side of the top of the mounting table, injection needles communicated with the interior of the U-shaped bin are uniformly mounted on one side of the U-shaped bin, a nitrogen cylinder is mounted on one side, close to the U-shaped bin, of the bottom of the mounting table, the output end of the nitrogen cylinder communicates with the interior of the U-shaped bin, and a first rotating rod is arranged on the side, close to the U-shaped bin, of the top of the mounting table. According to the invention, through cooperative use of the auxiliary filament pressing assembly and the mounting table, an electric pneumatic cylinder is controlled to be shortened, so that each group of hollow fiber membrane filaments are clamped into corresponding annular grooves in two groups of second guide rollers respectively, the two groups of second guide rollers press the multiple groups of hollow fiber membrane filaments into maintenance water in a water tank, an operator does not need to stretch into water manually to place the hollow fiber membrane filaments at the bottom in the water tank, the operator can replace new hollow fiber membrane filaments conveniently, and the detection water in the water tank can be prevented from being polluted.

Description

technical field [0001] The invention relates to the technical field of hollow fiber membrane leak detection, in particular to a membrane thread leak detection device for PVDF hollow fiber membrane production. Background technique [0002] PVDF (polyvinylidene fluoride) has good resistance to chemical solvents and oxidants. It has been used as a production base material for the production of hollow fiber membranes. As a liquid separation membrane product, PVDF hollow fiber membranes can be used in water treatment, chemical industry In industries such as electronics, pharmaceuticals, etc., PVDF hollow fiber membranes used for filtration require not only certain mechanical properties and filtration flux, but also good integrity of the membrane filaments, that is, no defects and defects on the surface of the membrane filaments. Large pores, otherwise the filtration effect of the membrane module will be seriously affected. [0003] At present, when the membrane filaments in the ...

Claims

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Application Information

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IPC IPC(8): B01D65/10B01D69/08B01D71/34F26B21/00
CPCB01D65/102B01D69/08B01D71/34F26B21/001
Inventor 不公告发明人
Owner 陈晓坤
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