Hollow fiber ultrafiltration membrane filter device

Abstract

The invention discloses a hollow fiber ultrafiltration membrane filter device which is characterized in that the hollow fiber ultrafiltration membrane filter device comprises a main body (7) of a membrane part, outer cylinders (6) are sheathed at the upper end and the lower end of the main body (7) of the membrane part, a hollow fiber (11) is arranged in the main body (7) of the membrane part, a water distributor (9) is arranged at the upper end of the hollow fiber (11), a membrane sub-grid supporting part (5) is arranged at the lower end, pore diameters of water distribution holes of the water distributor (9) are gradually increased along with the increase of the distance to a water inlet (10), the water distribution holes are annularly arranged, the upper part of the outer cylinder (6) at the upper end of the main body (7) of the membrane part is connected with an upper terminal (8), the lower part of the outer cylinder (6) at the lower end of the main body (7) of the membrane part is connected with a lower terminal (2), and a port (1) is formed at the lower end of the lower terminal (2). The hollow fiber ultrafiltration membrane filter device has the advantages of beautiful appearance, convenient manufacture and assembly, large flux, good sealing performance and small occupied space, thereby being particularly applicable to industrial water purification.

Description

technical field [0001] The invention relates to an ultrafiltration device in the field of water treatment, in particular to a hollow fiber ultrafiltration membrane filtration device. Background technique [0002] At present, the ultrafiltration membrane modules used in the field of water treatment generally use plexiglass tubes for their membrane shells, which are easily broken, and the resin is not evenly distributed during casting, making installation difficult and low flux. Some ultrafiltration membrane modules use UPVC tubes for their membrane shells and ABS engineering plastics for their outer cylinders. When two different materials are cemented together, they are prone to poor bonding, which leads to water leakage, and the tensile strength and toughness of UPVC tubes are relatively low. Poor, often manifested as brittleness, low elongation and easy fracture. When the sealing structure is connected to the outside, it is generally threaded or directly pressed with a gas...

AI Technical Summary

Problems solved by technology

[0002] At present, the ultrafiltration membrane modules used in the field of water treatment generally use plexiglass tubes for their membrane shells, which are easily broken, and the resin is not evenly distributed during casting, making installation difficult and low flux

Some ultrafiltration membrane modules use UPVC tubes for the membrane shell and ABS engineering plastics for the outer cylinder. When two different materials are bonded together, it is easy to appear that the bond is not strong, which will lead to water leakage, and the tensile strength and toughness of the UPVC tube are relatively low. Poor, often manifested as brittle, low elongation and easy to break

When the sealing structure is connected to the outside, it is usually threaded or directly pressed on the gasket. The sealing is not good and it is easy to leak

The water flow direction of the water distributor adopts a large-area open-hole cross-flow type, which increases the impact on the membrane filaments. With the increase of water intake, the membrane filaments will be prematurely fatigued and broken

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