Novel multihole spinning nozzle for producing braided-tube internally-strengthened hollow fiber membrane
A technology of braided tubes and fiber membranes, applied in the field of membrane separation, can solve the problems of incapable of large-scale mass production and low production efficiency, and achieve the effect of improving inflow uniformity, good uniformity, and uniformity
Inactive Publication Date: 2016-07-06
SHANGHAI TRUSTECH TECH DEV CO LTD
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[0003] At present, the market for reinforced hollow fiber membranes in braided tubes is mainly occupied by GE of the United States and Mitsubishi Rayon of Japan, etc., but in recent years, China has only begun to pay attention to the production of reinforced hollow fiber membranes in braided tubes, and most of them use single-hole spinnerets. This kind of single-hole spinneret can only produce one filament at a time, the production efficiency is extremely low, it cannot be mass-produced on a large scale, and it is far from meeting the needs of the domestic market
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[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0018] Such as figure 1 and figure 2 A new porous spinneret for producing reinforced hollow fiber membranes in braided tubes is shown, including braided tube guide plate 1, nozzle body 2, high-strength stainless steel needle tube 3 and nozzle cover 4, said braided tube guide plate 1, nozzle body 2 and the nozzle cover 4 are sequentially locked and fixed by screws from top to bottom. An open cylindrical material liquid cavity 41 is arranged on the upper part of the nozzle cover 4 and a cylindrical material liquid chamber 41 is arranged laterally on the side of the nozzle cover 4 . The feed liquid...
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The invention discloses a novel multihole spinning nozzle for producing a braided-tube internally-strengthened hollow fiber membrane.The spinning nozzle comprises a braided-tube guide plate, a nozzle body, high-strength stainless steel needles and a nozzle cover; the upper portion of the nozzle cover is provided with an open-type cylindrical material liquid cavity, a material liquid injection opening communicated with the cylindrical material liquid cavity is transversely formed in the side face of the nozzle cover, multiple spinning forming holes communicated to the bottom of the nozzle cover are formed in the bottom of the cylindrical material liquid cavity in a circumferential mode, the upper portion of each spinning forming hole is provided with a cylindrical buffer groove, the braided-tube guide plate and the nozzle body are provided with braided-tube guide inlets and needle installation holes which correspond to the positions of the spinning forming holes and are in a penetrating state respectively, one end of each high-strength stainless steel needle is fixed in the corresponding needle installation hole in a penetrating and inserted mode, and the other end of the high-strength stainless steel needle is arranged in the corresponding spinning forming hole in a penetrating mode.According to the novel multihole spinning nozzle for producing the braided-tube internally-strengthened hollow fiber membrane, inflow uniformity of material liquid in the spinning holes can be well improved, the spinning yield is high, and the spinning quality is stable.
Description
technical field [0001] The invention relates to the technical field of membrane separation, in particular to a novel porous spinneret for producing reinforced hollow fiber membranes in braided tubes. Background technique [0002] Hollow fiber membrane is an important new material used in reverse osmosis membrane, microfiltration membrane, nanofiltration membrane and ultrafiltration membrane in membrane separation technology, and has gradually been more and more widely used in environmental protection water treatment and other fields. With the rapid development of environmentally friendly water treatment, the quality and performance requirements of hollow fiber membranes are also getting higher and higher. At present, the manufacturing forms of hollow fiber membranes mainly include homogeneous hollow fiber membranes, reinforced hollow fiber membranes in braided tubes and long fiber reinforced hollow fiber membranes. Compared with the traditional homogeneous hollow fiber memb...
Claims
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IPC IPC(8): B01D69/08D01D5/24
CPCB01D69/085D01D5/24
Inventor 王立峰伍春兰舒建存
Owner SHANGHAI TRUSTECH TECH DEV CO LTD