Hollow fiber membrane element and manufacturing method thereof

Abstract

A disclosed hollow fiber membrane element comprises a central pipe and a hollow fiber membrane arranged around the central pipe, the central pipe is provided with a hollow purified water outlet and flow guide holes in the side wall, and the hollow fiber membrane element is characterized in that the hollow fiber membrane is a hollow fiber membrane sheet formed by bonding a plurality of hollow fibermembrane filaments after the hollow fiber membrane filaments are arranged in parallel, one end of the hollow fiber membrane sheet is closed to form a closed end, the other end of the hollow fiber membrane sheet is opened to form an open end, the open end of the hollow fiber membrane sheet is adhered to the side wall of the central pipe and is sealed, the hollow fiber membrane sheet is wound on the central pipe by taking the central pipe as a central axis, and a waterproof adhesive tape is wound on the outer side of the hollow fiber membrane. The invention also discloses a manufacturing methodof the hollow fiber membrane element. The manufacturing time is greatly shortened; and an end face does not need to be cut, the utilization rate of hollow fibers is increased, manufacturing procedures are reduced, and equipment research, development, manufacturing and production cost is greatly reduced.

Description

technical field [0001] The invention relates to a water filtration membrane module, in particular to a hollow fiber membrane module and a manufacturing method thereof. Background technique [0002] At present, the manufacturing process of most hollow fiber membrane elements in the domestic market is mostly manual, with a low degree of automation and unreasonable manufacturing process, resulting in poor structural consistency, and uneven fiber arrangement on the end surface of the membrane element package and its internal arrangement, resulting in concentration polarization. and low utilization rates. [0003] During the use and operation of most hollow fiber membrane elements, due to the accumulation of impurities in the filtrate and the internal pressure of the water membrane element during use, the hollow fiber filter element membranes become concentrated and dense, and the internal hollow fiber membranes cannot fully contact the water. In turn, concentration polarization...

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Problems solved by technology

[0002] At present, the manufacturing process of most hollow fiber membrane elements in the domestic market is mostly manual, with a low degree of automation and unreasonable manufacturing process, resulting in poor structural consistency, and uneven fiber arrangement on the end surface of the membrane element package and its internal arrangement, resulting in concentration polarization. and low utilization

[0003] During the use and operation of most hollow fiber membrane elements, due to the accumulation of impurities in the filtrate and the internal pressure of the water membrane element during use, the hollow fiber filter element membranes become concentrated and dense, and the internal hollow fiber membranes cannot fully contact the water. In turn, concentration polarization occurs, and the pollutants cannot be removed smoothly, which reduces the performance of the membrane element and ultimately greatly reduces the service life of the hollow fiber filter element membrane element.

[0004] The manufacturing process of most hollow fiber membrane elements requires multiple cutting and finishing of the hollow fiber membrane. After the membrane element is packaged, it needs to be cut again. Such equipment, cutting dust is likely to cause membrane elements and environmental pollution

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