Novel hollow fiber membrane filter core and manufacturing method thereof

Abstract

The invention relates to a novel hollow fiber membrane filter core and a manufacturing method of the novel hollow fiber membrane filter core. The novel hollow fiber membrane filter core comprises a sealing body (1), a hollow fiber membrane (2), a filter core end cover (3), a water producing pipe (6) and a purified water outlet (5), wherein the sealing body (1) is in a three-dimensional structure, and the open end of a hollow fiber membrane filament penetrates through a sealing layer from the outer surface of the sealing body (1) to the inner surface of the sealing body (1). The novel hollow fiber membrane filter core is characterized in that the sealing body (1) comprises a protective layer (9), an outer support layer (8), a sealing layer (10) and an inner support layer (7); the protective layer (9), the outer support layer (8), the sealing layer (10) and the inner support layer (7) are closely combined together from outside to inside; the upper edge of the filter core end cover (3), the upper edge of the water producing pipe (6) and the upper edge and lower edge of the sealing body (1) are closely combined together. The manufacturing method of the novel hollow fiber membrane filter core at least comprises the following three steps: moulding; winding the hollow fiber membrane filament; and pouring the sealing layer (10). The novel hollow fiber membrane filter core disclosed by the invention has the characteristics of simple structure, difficulty in hollow fiber membrane filament fracture, high filter core intensity, material conservation and convenience in manufacturing.

Description

Technical field [0001] The invention involves a hollow fiber membrane filter, which specifically involves a hollow fiber membrane filter and its manufacturing method with a new structure. Background technique [0002] Membrane separation technology is a separation technology widely used in solution or gas substances to separate, concentrated and purified.Micro -holes of the membrane wall are densely distributed, and the raw liquid is filtered through the membrane wall through the membrane wall by the side of the membrane under the side of the membrane under a certain pressure.In the water purification industry, the technology of using a hollow fiber membrane into a filter element is widely used. [0003] There are two forms of the hollow fiber film filter element, one is to gather multiple hollow fiber membrane wires and seal the ends of the hollow fiber membrane with sealing materials.Make the hollow fiber film evenly scattered in the sealing material.And keep the inside of the ...

AI Technical Summary

Problems solved by technology

[0005] There are deficiencies in the above-mentioned filter element. First, the structure of the water-producing pipe including guide grooves, water inlet holes, guide posts, and positioning devices is complex.

The second is to use adhesive materials including epoxy resin, polyurethane resin, polyolefin resin, etc. to cure the sealing layer. The sealing layer is not strong enough and is not suitable for larger filter elements.

The third is the hollow membrane filament where the outer wall of the sealing layer is in contact with the hollow fiber membrane. Due to the capillary effect during manufacture, the sealing liquid climbs up to the root of the hollow fiber membrane, causing the hollow fiber membrane filament at the root to become brittle and easy to break

[0007] In the traditional manufacturing method, the casting mold is composed of the end of the cylindrical shell of the filter element and the movable sealing cover. After the processing is completed, the sealing cover must be removed, and the excess sealing layer beyond the end of the shell should be cut off, which not only wastes materials but also takes time. It is laborious; in addition, the hollow fiber membrane tubes of the filter element made by the traditional method are not uniform and irregular on the surface of the water-producing end; and the traditional filter element manufacturing method is not suitable for manufacturing a hollow fiber membrane filter element with a three-dimensional sealing head

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