JP2019177302A - filter - Google Patents

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Publication number
JP2019177302A
JP2019177302A JP2018066575A JP2018066575A JP2019177302A JP 2019177302 A JP2019177302 A JP 2019177302A JP 2018066575 A JP2018066575 A JP 2018066575A JP 2018066575 A JP2018066575 A JP 2018066575A JP 2019177302 A JP2019177302 A JP 2019177302A
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Prior art keywords
filter
pair
filter medium
supports
cylindrical
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JP7193245B2 (en
Inventor
賢治 坂口
Kenji Sakaguchi
賢治 坂口
林　秀樹
Hideki Hayashi
秀樹 林
雅一 備前
Masakazu Bizen
雅一 備前
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Nagase Filter Co Ltd
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Nagase Filter Co Ltd
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Abstract

To provide a low-cost cylindrical filter that neither deteriorates quality of an object to be filtered nor requires a large installation space.SOLUTION: A filter 10 according to the invention includes a cylindrical filter material 11 and a pair of cylindrical support bodies 12a and 12b arranged at both ends in a shaft direction of the filter material 11. The filter material 11 is a non-woven sintered body of metal fiber, where the total of lengths L in a shaft direction of the filter material 11 and the pair of support bodies 12a and 12b are 20 mm-300 mm, and outer diameters D of the filter material 11 and the pair of support bodies 12a and 12b are 4 mm-20 mm.SELECTED DRAWING: Figure 1

Description

本発明は、フィルターに関する。   The present invention relates to a filter.

粗大空孔を持つ筒状の多孔質支持体と、前記支持体の一方の表面上に積層配置される微細粒子の濾過層を備えたフィルターが提案されている（特許文献１）。前記フィルターでは、前記濾過層は、微粉末金属が焼結された焼結成形品である。   A filter including a cylindrical porous support having coarse pores and a fine particle filtration layer arranged on one surface of the support has been proposed (Patent Document 1). In the filter, the filtration layer is a sintered molded product obtained by sintering a fine powder metal.

特開２０１５−９２３５号公報Japanese Patent Laying-Open No. 2015-9235

しかしながら、前述のフィルターでは、前記濾過層から前記微粉末金属が脱落し、被濾過物に混入して、被濾過物の品質を低下させるおそれがある。また、従来の筒状のフィルターは、大型であり、大きな設置スペースを必要とする。さらに、大型のフィルターは、強度維持のために、パンチングパイプ等の粗大空孔を持つ筒状の多孔質支持体を必要とし、コストが高い。   However, in the above-described filter, there is a possibility that the fine powder metal falls off from the filtration layer and is mixed into the object to be filtered, thereby reducing the quality of the object to be filtered. Moreover, the conventional cylindrical filter is large and requires a large installation space. Furthermore, a large filter requires a cylindrical porous support having coarse pores such as punching pipes in order to maintain strength, and is expensive.

そこで、本発明は、被濾過物の品質を低下させることがなく、また、大きな設置スペースを必要とせず、コストの低い筒状のフィルターを提供することを目的とする。   Therefore, an object of the present invention is to provide a low-cost cylindrical filter that does not deteriorate the quality of an object to be filtered and does not require a large installation space.

前記目的を達成するために、本発明のフィルターは、
円筒状の濾材と、
前記濾材の軸方向両端に配置された一対の円筒状の支持体と、
を含み、
前記濾材は、金属繊維の不織布の焼結体であり、
前記濾材及び前記一対の支持体の軸方向の長さの合計が、２０ｍｍ〜３００ｍｍであり、
前記濾材及び前記一対の支持体の外径が、４ｍｍ〜２０ｍｍである、
ことを特徴とする。 In order to achieve the above object, the filter of the present invention comprises:
A cylindrical filter medium;
A pair of cylindrical supports disposed at both axial ends of the filter medium;
Including
The filter medium is a sintered body of a nonwoven fabric of metal fibers,
The total axial length of the filter medium and the pair of supports is 20 mm to 300 mm,
The outer diameter of the filter medium and the pair of supports is 4 mm to 20 mm.
It is characterized by that.

本発明のフィルターは、濾材が金属繊維の不織布の焼結体であるため、フィルターの形成材料の被濾過物への混入により、被濾過物の品質を低下させることがない。また、本発明のフィルターは、小型であり、大きな設置スペースを必要とせず、強度維持のためのパンチングパイプ等による補強の必要がないため、コストが低い。   In the filter of the present invention, since the filter medium is a sintered body of a non-woven fabric of metal fibers, the quality of the material to be filtered is not deteriorated by mixing the filter forming material into the material to be filtered. In addition, the filter of the present invention is small in size, does not require a large installation space, and does not need to be reinforced with a punching pipe or the like for maintaining strength, so that the cost is low.

図１（Ａ）は、本発明のフィルターの一例を示す斜視図であり、図１（Ｂ）は、図１（Ａ）に示すフィルターのＩ−Ｉ方向から見た断面図である。FIG. 1A is a perspective view illustrating an example of the filter of the present invention, and FIG. 1B is a cross-sectional view of the filter illustrated in FIG.

本発明のフィルターにおいて、前記濾材の外径と、前記一対の支持体の外径とは、異なってもよいが、同一であることが好ましい。   In the filter of the present invention, the outer diameter of the filter medium and the outer diameter of the pair of supports may be different, but are preferably the same.

本発明のフィルターにおいて、例えば、前記金属繊維は、ステンレス繊維であってもよい。   In the filter of the present invention, for example, the metal fiber may be a stainless fiber.

本発明のフィルターは、例えば、溶融樹脂の濾過に用いられてもよい。また、本発明のフィルターは、例えば、中空糸の製造に用いられてもよい。   The filter of the present invention may be used, for example, for filtering molten resin. Moreover, the filter of this invention may be used for manufacture of a hollow fiber, for example.

以下、本発明のフィルターについて、図を用いて説明する。本発明は、下記の実施形態によって何ら限定及び制限されない。以下の各図において、同一部分には、同一符号を付している。また、図においては、説明の便宜上、各部の構造は適宜簡略化して示す場合があり、各部の寸法比等は、実際とは異なり、模式的に示す場合がある。   Hereinafter, the filter of the present invention will be described with reference to the drawings. The present invention is not limited or restricted by the following embodiments. In the following drawings, the same parts are denoted by the same reference numerals. In the drawings, for convenience of explanation, the structure of each part may be simplified as appropriate, and the dimensional ratio of each part may be schematically shown, unlike actual ones.

図１（Ａ）は、本発明のフィルターの一例を示す斜視図であり、図１（Ｂ）は、図１（Ａ）に示すフィルターのＩ−Ｉ方向から見た断面図である。   FIG. 1A is a perspective view illustrating an example of the filter of the present invention, and FIG. 1B is a cross-sectional view of the filter illustrated in FIG.

図１（Ａ）及び（Ｂ）に示すように、フィルター１０は、濾材１１と、一対の支持体１２ａ、１２ｂと、含む。   As shown to FIG. 1 (A) and (B), the filter 10 contains the filter medium 11 and a pair of support body 12a, 12b.

濾材１１は、円筒状の金属繊維の不織布の焼結体である。前記金属繊維としては、例えば、ステンレス繊維等があげられる。   The filter medium 11 is a sintered body of a cylindrical metal fiber nonwoven fabric. Examples of the metal fibers include stainless steel fibers.

濾材１１の軸方向の長さは、例えば、１７ｍｍ〜２９７ｍｍ、３０ｍｍ〜２００ｍｍ、４０ｍｍ〜１００ｍｍである。本発明において、濾材１１の軸方向は、濾材１１を構成する円筒の中心軸と平行な方向である。濾材１１の外径は、４ｍｍ〜２０ｍｍである。濾材１１の外径は、例えば、５ｍｍ〜１５ｍｍとしてもよい。濾材１１の外径は、後述の一対の支持体１２ａ、１２ｂの外径Ｄと同じとしてもよい。濾材１１の厚みは、例えば、０．３ｍｍ〜３ｍｍ、０．４ｍｍ〜２ｍｍ、０．５ｍｍ〜１．７ｍｍである。   The length of the filter medium 11 in the axial direction is, for example, 17 mm to 297 mm, 30 mm to 200 mm, or 40 mm to 100 mm. In the present invention, the axial direction of the filter medium 11 is a direction parallel to the central axis of the cylinder constituting the filter medium 11. The outer diameter of the filter medium 11 is 4 mm to 20 mm. The outer diameter of the filter medium 11 may be, for example, 5 mm to 15 mm. The outer diameter of the filter medium 11 may be the same as the outer diameter D of a pair of support bodies 12a and 12b described later. The thickness of the filter medium 11 is, for example, 0.3 mm to 3 mm, 0.4 mm to 2 mm, and 0.5 mm to 1.7 mm.

一対の支持体１２ａ、１２ｂは、それぞれ、濾材１１の軸方向両端に配置される。一対の支持体１２ａ、１２ｂの形状は、異なってもよいが、同一であることが好ましく、軸方向の一端が、外部に露出し、軸方向の他端が、濾材１１の筒内部に収容された円筒状である。本発明において、一対の支持体１２ａ、１２ｂの軸方向は、一対の支持体１２ａ、１２ｂを構成する円筒の中心軸と平行な方向であり、前述の濾材１１の軸方向と同一方向である。   The pair of supports 12a and 12b are respectively disposed at both axial ends of the filter medium 11. The shapes of the pair of supports 12a and 12b may be different, but are preferably the same. One end in the axial direction is exposed to the outside, and the other end in the axial direction is accommodated inside the tube of the filter medium 11. It is cylindrical. In the present invention, the axial direction of the pair of supports 12a and 12b is parallel to the central axis of the cylinder constituting the pair of supports 12a and 12b, and is the same as the axial direction of the filter medium 11 described above.

一対の支持体１２ａ、１２ｂの形成材料としては、例えば、ステンレス等があげられる。   Examples of the material for forming the pair of supports 12a and 12b include stainless steel.

一対の支持体１２ａ、１２ｂにおいて、濾材１１の端部から露出した部分の軸方向の長さは、例えば、３ｍｍ〜１００ｍｍ、４ｍｍ〜７５ｍｍ、５ｍｍ〜５０ｍｍであり、濾材１１の筒内部に収容された部分の軸方向の長さは、例えば、１ｍｍ〜１０ｍｍ、２ｍｍ〜８ｍｍ、３ｍｍ〜６ｍｍである。一対の支持体１２ａ、１２ｂの軸方向の他端が、濾材１１の筒内部に収容された状態において、濾材１１及び一対の支持体１２ａ、１２ｂの軸方向の長さの合計Ｌは、２０ｍｍ〜３００ｍｍである。また、一対の支持体１２ａ、１２ｂの外径Ｄは、例えば、４ｍｍ〜２０ｍｍ、５ｍｍ〜１５ｍｍ、６ｍｍ〜１０ｍｍであり、一対の支持体１２ａ、１２ｂの内径ｄは、例えば、１ｍｍ〜１９ｍｍ、２ｍｍ〜１４ｍｍ、３ｍｍ〜９ｍｍである。そして、一対の支持体１２ａ、１２ｂにおいて、濾材１１の筒内部に収容された部分の厚みは、例えば、０．３ｍｍ〜５ｍｍ、０．４ｍｍ〜４ｍｍ、０．５ｍｍ〜３ｍｍである。   In the pair of supports 12a and 12b, the axial length of the portion exposed from the end of the filter medium 11 is, for example, 3 mm to 100 mm, 4 mm to 75 mm, and 5 mm to 50 mm, and is accommodated inside the cylinder of the filter medium 11. The length in the axial direction of the portion is, for example, 1 mm to 10 mm, 2 mm to 8 mm, 3 mm to 6 mm. In the state where the other axial end of the pair of supports 12a and 12b is housed inside the tube of the filter medium 11, the total length L in the axial direction of the filter medium 11 and the pair of supports 12a and 12b is 20 mm to 300 mm. The outer diameter D of the pair of support bodies 12a and 12b is, for example, 4 mm to 20 mm, 5 mm to 15 mm, and 6 mm to 10 mm. The inner diameter d of the pair of support bodies 12a and 12b is, for example, 1 mm to 19 mm, 2 mm. -14 mm, 3 mm to 9 mm. And in a pair of support body 12a, 12b, the thickness of the part accommodated in the cylinder inside of the filter medium 11 is 0.3 mm-5 mm, 0.4 mm-4 mm, 0.5 mm-3 mm, for example.

一対の支持体１２ａ、１２ｂは、例えば、旋盤加工、プレス加工等により製造できる。また、一対の支持体１２ａ、１２ｂの製造には、金属３Ｄプリンタを用いてもよい。   A pair of support body 12a, 12b can be manufactured by lathe processing, press work, etc., for example. Moreover, you may use a metal 3D printer for manufacture of a pair of support body 12a, 12b.

濾材１１と、一対の支持体１２ａ、１２ｂの接合方法は、特に限定されず、例えば、レーザ溶接、ＴＩＧ（Ｔｕｎｇｓｔｅｎ Ｉｎｅｒｔ Ｇａｓ）溶接、カシメ、ＹＡＧレーザ溶接等により接合できる。   The joining method of the filter medium 11 and the pair of supports 12a and 12b is not particularly limited, and can be joined by, for example, laser welding, TIG (Tungsten Inert Gas) welding, caulking, YAG laser welding, or the like.

本発明のフィルター１０は、一対の支持体１２ａ、１２ｂのうち一方の外部に露出した開口に蓋をし、濾材１１の筒外部から筒内部へと被濾過物を通過させ、一対の支持体１２ａ、１２ｂのうち他方の外部に露出した開口へと前記被濾過物を送ることで、被濾過物を濾過する。前記被濾過物としては、例えば、溶融したポリエチレンテレフタレート、ポリエチレン、ナイロン等の溶融樹脂等があげられる。本発明のフィルター１０は、濾材１１が金属繊維の不織布の焼結体であるため、フィルター１０の形成材料の前記被濾過物への混入により、前記被濾過物の品質を低下させることがない。また、本発明のフィルター１０は、小型であり、大きな設置スペースを必要とせず、強度維持のためのパンチングパイプ等による補強の必要がないため、コストが低い。   The filter 10 of the present invention covers the opening that is exposed to the outside of one of the pair of supports 12a and 12b, passes the material to be filtered from the outside of the cylinder of the filter medium 11 to the inside of the cylinder, and the pair of supports 12a. , 12b, the object to be filtered is filtered by sending the object to be filtered to the other exposed opening. Examples of the material to be filtered include molten resin such as molten polyethylene terephthalate, polyethylene, and nylon. In the filter 10 of the present invention, since the filter medium 11 is a sintered body of a metal fiber nonwoven fabric, the quality of the material to be filtered does not deteriorate due to the mixing of the material for forming the filter 10 into the material to be filtered. In addition, the filter 10 of the present invention is small in size, does not require a large installation space, and does not require reinforcement with a punching pipe or the like for maintaining strength, so that the cost is low.

本発明のフィルター１０の用途は、特に限定されず、例えば、溶融樹脂の濾過、中空糸の製造等に用い得る。   The use of the filter 10 of the present invention is not particularly limited, and can be used for, for example, filtration of molten resin, production of hollow fibers, and the like.

以上のように、本発明のフィルターは、被濾過物の品質を低下させることがなく、また、大きな設置スペースを必要とせず、コストの低いものである。本発明のフィルターは、溶融樹脂の濾過、中空糸の製造をはじめ、各種用途に広く適用可能である。   As described above, the filter of the present invention does not deteriorate the quality of the object to be filtered, does not require a large installation space, and is low in cost. The filter of the present invention can be widely applied to various uses including filtration of molten resin and production of hollow fibers.

１０ フィルター
１１ 濾材
１２ａ、１２ｂ 支持体 10 Filter 11 Filter medium 12a, 12b Support

Claims (5)

円筒状の濾材と、
前記濾材の軸方向両端に配置された一対の円筒状の支持体と、
を含み、
前記濾材は、金属繊維の不織布の焼結体であり、
前記濾材及び前記一対の支持体の軸方向の長さの合計が、２０ｍｍ〜３００ｍｍであり、
前記濾材及び前記一対の支持体の外径が、４ｍｍ〜２０ｍｍである、
ことを特徴とするフィルター。 A cylindrical filter medium;
A pair of cylindrical supports disposed at both axial ends of the filter medium;
Including
The filter medium is a sintered body of a nonwoven fabric of metal fibers,
The total axial length of the filter medium and the pair of supports is 20 mm to 300 mm,
The outer diameter of the filter medium and the pair of supports is 4 mm to 20 mm.
A filter characterized by that. 前記濾材及び前記一対の支持体の外径が、同一である、請求項１記載のフィルター。 The filter according to claim 1, wherein the filter medium and the pair of supports have the same outer diameter. 前記金属繊維が、ステンレス繊維である、請求項１又は２記載のフィルター。 The filter according to claim 1 or 2, wherein the metal fibers are stainless steel fibers. 溶融樹脂の濾過に用いられる、請求項１〜３のいずれか一項に記載のフィルター。 The filter as described in any one of Claims 1-3 used for filtration of molten resin. 中空糸の製造に用いられる、請求項１〜４のいずれか一項に記載のフィルター。 The filter as described in any one of Claims 1-4 used for manufacture of a hollow fiber.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05220360A (en) * 1992-02-07 1993-08-31 Ube Ind Ltd Asymmetric hollow-fiber carbon membrane and its production
JPH06285952A (en) * 1993-04-02 1994-10-11 Mitsubishi Heavy Ind Ltd Molten resin filter
US20020011440A1 (en) * 1998-10-05 2002-01-31 Quick Nathaniel R. Seal for filter element
JP2013091046A (en) * 2011-10-27 2013-05-16 Fuji Filter Kogyo Kk Filtration apparatus
JP2017029871A (en) * 2015-07-28 2017-02-09 宇部興産株式会社 Asymmetric gas separation membrane and method for separating and recovering gas

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05220360A (en) * 1992-02-07 1993-08-31 Ube Ind Ltd Asymmetric hollow-fiber carbon membrane and its production
JPH06285952A (en) * 1993-04-02 1994-10-11 Mitsubishi Heavy Ind Ltd Molten resin filter
US20020011440A1 (en) * 1998-10-05 2002-01-31 Quick Nathaniel R. Seal for filter element
JP2013091046A (en) * 2011-10-27 2013-05-16 Fuji Filter Kogyo Kk Filtration apparatus
JP2017029871A (en) * 2015-07-28 2017-02-09 宇部興産株式会社 Asymmetric gas separation membrane and method for separating and recovering gas

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