Device for preparing fiber-reinforced hollow fiber membrane

A technology of fiber reinforcement and preparation device, which is applied in membrane technology, semi-permeable membrane separation, chemical instruments and methods, etc., can solve problems such as difficulty in controlling the uniformity of the wall thickness of hollow fiber membranes, and achieve the improvement of product quality, reliability and wall thickness. Evenly distributed effect

Inactive Publication Date: 2013-08-28
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are certain difficulties in adding the core liquid evenly in the hollow part and controlling the uniformity of the hollow fiber membrane wall thickness.

Method used

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  • Device for preparing fiber-reinforced hollow fiber membrane
  • Device for preparing fiber-reinforced hollow fiber membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The technological process of the fiber-reinforced hollow fiber membrane preparation device designed by the present invention is as follows figure 1 As shown, the device includes a reinforced fiber feeding roller 1, a core solution dipping tank 2, a guide roller 3, a casting solution coating die 4, a coagulation bath 5, a winding machine 6, a dissolution kettle 7, a filter 8, and a metering pump 9. figure 2 It is a schematic cross-sectional structure diagram of the casting solution coating die head 4, the coating die head 4 is composed of parts 41 and 42, 411 is the fiber braided tube channel, 421 is the casting solution inlet, and the cylindrical shape made of parts 41 and 42 The cavity 43 is a dynamic storage area for the casting solution. The first section of the annular slit 44 is equal in diameter, and then the annular slit gradually converges; the cross-sectional area of ​​the cavity 43 is 3 times the maximum cross-sectional area of ​​the annular slit 44. times. ...

Embodiment 2

[0017] With the same device and process as in Example 1, the reinforcing fiber of the present invention is a polyester low-elastic yarn, which is made into a cylindrical mesh tubule with a diameter of 2mm through a braiding machine with a setting device; the casting solution is made of polyester It is composed of vinylidene fluoride, polyvinylpyrrolidone and dimethylacetamide; the core liquid is composed of dimethylacetamide aqueous solution; the coagulation bath is water.

[0018] What is not mentioned in the present invention is applicable to the prior art.

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Abstract

The invention discloses a device for preparing a fiber-reinforced hollow fiber membrane. The device for preparing the fiber-reinforced hollow fiber membrane comprises a feeding roller of a fiber-reinforced weaving pipe, a core liquid dipping tank, a guide roller, a cast membrane liquid preparation system, a coating die head, a coagulating bath tank and a winding roller. The device for preparing the fiber-reinforced hollow fiber membrane is characterized in that the surface of the fiber weaving pipe passing through a dipping core liquid is covered with a cast membrane liquid fully and uniformly by virtue of the coating die head, then the fiber weaving pipe is formed after entering the coagulating bath, and finally is wound, thereby obtaining a fiber-reinforced hollow fiber separating membrane with uniform degree of hollowness and wall thickness.

Description

technical field [0001] The invention relates to a hollow fiber membrane preparation device, in particular to a device for preparing a fiber-reinforced high-strength hollow fiber separation membrane. Background technique [0002] Hollow fiber membranes are one type of separation membranes. It has been widely used in the field of membrane separation technology due to its many advantages such as high packing density, no need for support materials, simple production process, and miniaturized preparation equipment. [0003] In the preparation of hollow fiber membranes, many methods such as dry-wet spinning, dry spinning, and melt spinning-stretching are usually used. Hollow fiber membranes with different separation properties obtained by these preparation methods can meet the requirements for membrane strength in the fields of general chemical separation, enrichment, purification and pure water production. However, in the field of sewage treatment with harsh environment, especi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/08B01D67/00
Inventor 安树林肖长发张宇峰李万春
Owner TIANJIN POLYTECHNIC UNIV
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