Cartridge type hollow fiber membrane module

Patent metadata

Field	Value
Publication number	US-9895664-B2
Application number	US-201414786932-A
Country	US
Kind code	B2
Filing date	Apr 24, 2014
Priority date	Apr 25, 2013
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

A cartridge type hollow-fiber membrane module of the present invention includes: a housing; a plurality of hollow fiber membranes housed in the housing; a first potting part which bundles first ends of the hollow fiber membranes while keeping the first ends open; a second potting part which bundles second ends of the hollow fiber membranes while keeping the second ends sealed; a fixing part which detachably fixes the first potting part to the housing; a sealing part which liquid-tightly seals a space between the first potting part and the housing; and a holding part which holds the second potting part so that the second potting part is detachable from the housing and so that liquids can pass through a space between the second potting part and the housing.

First claim

The invention claimed is:

1. A cartridge type hollow-fiber membrane module comprising:
a housing;
a plurality of hollow fiber membranes housed in the housing;
a first potting part which bundles first ends of the hollow fiber membranes while keeping the first ends open;
a second potting part which bundles second ends of the hollow fiber membranes while keeping the second ends sealed;
a fixing part which detachably fixes the first potting part to the housing;
a sealing part which liquid-tightly seals a space between the first potting part and the housing;
a first holding groove provided to the housing in a position which faces the second potting part outer peripheral surface;
a second holding groove provided to the outer peripheral surface of the second potting part in a position which faces the first holding groove;
a holding part which holds the second potting part so that the second potting part is detachable from the housing and so that liquids can pass through a space between the second potting part and the housing; and
a flow regulation cylinder provided below the first potting part, wherein
gaps are provided between the second potting part and the housing and between a lower end of the flow regulation cylinder and the housing, the gaps having a dimension, in a radial direction of the housing, of 0.5 mm or larger,
the second potting part is movable in the radial direction and an axial direction of the housing,
the holding part restricts a movement of the second potting part in the axial direction of the housing, and
the holding part is either a pin that is inserted into both the first holding groove and the second holding groove or an annular member having separable portions each having at least one notch, the annular member being inserted into both the first holding groove and the second holding groove.

2. The cartridge type hollow-fiber membrane module according to claim 1 , wherein
the holding part is a pin that is inserted into both the first holding groove and the second holding groove.

3. The cartridge type hollow-fiber membrane module according to claim 1 , wherein
the holding part is an annular member having separable portions each having at least one notch, the annular member being inserted into both the first holding groove and the second holding groove.

4. The cartridge type hollow-fiber membrane module according to claim 1 , wherein
at least one holding groove is provided to the housing in a position which faces the outer peripheral surface of the second potting part, or provided to the second potting part in a position which faces an inner peripheral surface of the housing,
if the housing has the holding groove, the holding part is provided to the second potting part in a position which faces the holding groove,
if the second potting part has the holding groove, the holding part is provided to the housing in a position which faces the holding groove, and
the holding part is a pin, and the pin is inserted into the holding groove.

5. The cartridge type hollow-fiber membrane module according to claim 2 , wherein when the second potting part is moved in a direction opposite from the first potting part, the holding part is in line contact with both the first holding groove and the second holding groove to thereby hold the second potting part.

6. The cartridge type hollow-fiber membrane module according to claim 4 , wherein when the second potting part is moved in the direction opposite from the first potting part, the holding part is in line contact with the holding groove to thereby hold the second potting part.

7. The cartridge type hollow-fiber membrane module according to claim 1 , wherein
the housing is equipped with at least one first fastener,
the second potting part is equipped with at least one second fastener, and
the holding part is a stringy member, and the stringy member connects the first fastener and the second fastener to each other.

8. The cartridge type hollow-fiber membrane module according to claim 1 , wherein
the second potting part has one or more through holes which pierce the second potting part in the axial direction of the housing, and
an opening of at least one through hole among the through holes on a surface of the second potting part which faces the first potting part is located in a region which ranges within a height of 3 mm from the lowest portion of said surface.

9. The cartridge type hollow-fiber membrane module according to claim 1 , wherein
the second potting part has one or more through holes which pierce the second potting part in the axial direction of the housing, and
a sum of a channel area of the through holes and a channel area of the gap between the second potting part and the housing is 5 to 30% of a cross-sectional area of the housing.

10. The cartridge type hollow-fiber membrane module according to claim 1 , which is equipped with a flow regulation cylinder below the first potting part, wherein a gap is provided between a lower end of the flow regulation cylinder and the housing.

11. The cartridge type hollow-fiber membrane module according to claim 3 , wherein when the second potting part is moved in a direction opposite from the first potting part, the holding part is in line contact with both the first holding groove and the second holding groove to thereby hold the second potting part.

Assignees

• Toray Industries

Inventors

• Kobayashi Atsushi
• Inuzuka Hayato
• SHIMURA Shun
• Takeuchi Norihiro

Classifications

• B01D63/04 Primary

  comprising multiple hollow fibre assemblies · CPC title

• C02F1/44

  by dialysis, osmosis or reverse osmosis {(general membrane separation processes B01D61/00, membrane modules B01D63/00, electrodialysis C02F1/4693, combination of membrane modules and bioreactors C02F3/1268)} · CPC title

• B01D2313/08

  Flow guidance means within the module or the apparatus · CPC title

• B01D2315/08

  Fully permeating type; Dead-end filtration · CPC title

• B01D2313/02

  Specific tightening or locking mechanisms · CPC title