Manufacturing method of hollow fiber membrane module

Abstract

The present invention provides a manufacturing method of a hollow fiber film assembly with short length of a cylindrical housing in an axial direction relative to the hollow fiber film. The manufacturing method comprises the following steps: a step of mounting a cylindrical auxiliary guiding member (13) of which the diameter is approximately same with that of a surrounding wall on the surrounding wall of the cylindrical housing (3), preparing a cylinder (5) which reels elongated fabric of the hollow fiber film with a preset length to a roller around a central pipe (11), inserting the cylinder (5) of the hollow fiber film into the housing (3), and mounting a resin bottle (27) which is filled by resin at the upper end of the central pipe (11); a step of applying a centrifugal force in a bottom surface direction through a centrifugal device for moving the resin in the resin bottle (27) to the part near the bottom surface and solidifying; and a step of cutting off the bottom of the cylindrical housing (3), exposing the hollow fiber film and removing the auxiliary guiding member (13) and the resin bottle (27).

Description

technical field [0001] The present invention relates to a manufacturing method of a hollow fiber membrane module, in particular to a manufacturing method of a hollow fiber membrane module in which the hollow fiber membrane is exposed outside a cylindrical casing. Background technique [0002] Conventionally, as a hollow fiber membrane module for water purifiers, a technique of accommodating hollow fiber membranes in a cylindrical case is known (for example, Patent Document 1). [0003] prior art literature [0004] Patent Document 1: Japanese Patent Laid-Open No. 2008-137005 [0005] Such a hollow fiber membrane module purifies raw water by letting raw water flow in from one end of the opening of the cylindrical case, purifies the raw water with the hollow fiber membranes, and discharges the raw water from the other end of the cylindrical case. [0006] In addition, when the water purifier is used in an environment where raw water contains a large amount of turbidity, sinc...

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Problems solved by technology

[0008] However, there is a problem that a hollow fiber membrane module in which the cylindrical case is short in the axial direction relative to the length of the hollow fiber membrane cannot be produced by the above method.

Specifically, in the above-mentioned method, in the case of manufacturing a hollow fiber membrane module in which the length of the cylindrical casing is short in the axial direction relative to the hollow fiber membrane, since there is no hollow space for supporting the drum shape in the circumferential direction, The cylindrical casing of the fiber membrane, so the resin bottle filled with resin needs to be supported by the hollow fiber membrane and the central tube, and there is a possibility that the resin bottle will fall and overflow the resin

In addition, when there is no cylindrical case around the hollow fiber membranes, it is necessary to continue the manufacturing process with the hollow fiber membranes exposed, which may damage the hollow fiber membranes.

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