Spinneret for preparing enhanced hollow fiber membrane, membrane preparation method and hollow fiber membrane

Abstract

The invention discloses a spinneret for preparing an enhanced hollow fiber membrane and a membrane preparation method. The spinneret comprises a primary coating spinneret. A pre-coating device is arranged on the baffle of the primary coating spinneret; the pre-coating device comprises a cover plate and a pre-coating cavity arranged below the cover plate; the bottom of the cavity wall of the pre-coating cavity is arranged on the baffle; an air inlet hole is arranged in the cover plate; an atomizing hole is arranged in the surface in contact with the cover plate of the pre-coating cavity; the atomizing hole is communicated with the air inlet hole; a liquid inlet hole is arranged in the cavity wall of the pre-coating cavity; a gas-liquid discharge hole is arranged in the lower part of the pre-coating cavity; a liquefied droplet leakage-proof table is arranged at the bottom of the pre-coating cavity on the baffle, a positioning hole and a fixing hole are arranged in the cover plate and thewall of the pre-coating cavity in the thickness direction respectively, a rope penetrating hole is arranged in the middle of the cover plate and in the top of the leakage-proof table respectively, and the positioning hole, the fixing hole and the rope penetrating hole correspond to the positioning hole, the fixing hole and the rope penetrating hole respectively of the primary coating spinneret. The enhanced hollow fiber membrane with super-strong falling resistance and high bursting strength can be prepared.

Description

technical field [0001] The invention relates to the technical field of hollow fiber membrane preparation, in particular to a spinneret for preparing a reinforced hollow fiber membrane, a membrane making method and the membrane. Background technique [0002] With the continuous innovation of science and technology, the continuous improvement of the level of industrialization, the acceleration of urbanization, and the continuous improvement of people's living standards, the pollution of China's water environment has become increasingly serious. Therefore, membrane filtration technology with simple operation and energy saving is gradually occupying an important position in the field of water treatment. At present, the traditional biological treatment method with poor effluent quality, large floor area, long treatment period, and low impact load can no longer meet the high standard requirements of water treatment. The membrane technology combined with activated sludge treatment ...

AI Technical Summary

Problems solved by technology

However, the introduction of liquid feed liquid in the pretreatment area by this method cannot completely avoid the problem of seepage. At the same time, for the gaseous pretreatment liquid, the pretreatment liquid needs to be vaporized in advance, which makes the operation difficult and the equipment cost is high.

[0006] In summary, in the prior art, it is difficult to control the seepage of the pre-coating solution for the pre-treatment of the braided pipe coated with dilute solution, and there are problems such as complex equipment, high cost, and difficult operation

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