JP4384644B2 - Molded filter and manufacturing method thereof - Google Patents

Molded filter and manufacturing method thereof Download PDF

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JP4384644B2
JP4384644B2 JP2006129862A JP2006129862A JP4384644B2 JP 4384644 B2 JP4384644 B2 JP 4384644B2 JP 2006129862 A JP2006129862 A JP 2006129862A JP 2006129862 A JP2006129862 A JP 2006129862A JP 4384644 B2 JP4384644 B2 JP 4384644B2
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filter cloth
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resin
mouth
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JP2007237160A5 (en
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嘉一 斉藤
昌弘 古尾谷
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嘉一 斉藤
昌弘 古尾谷
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Description

この発明は成形フィルタに関し、焼却システムにおける集塵装置に使用し、濾布の耐熱性をその限界まで利用しつつ高い濾過効率を確保することを主として意図したものであるが、焼却システムに限定せず、一般的な集塵用途の成形フィルタとしても実現可能である成形フィルタに関するものである。   The present invention relates to a molded filter, which is intended for use in a dust collector in an incineration system, and mainly intended to ensure high filtration efficiency while utilizing the heat resistance of the filter cloth to its limit, but is limited to the incineration system. The present invention also relates to a molded filter that can be realized as a molded filter for general dust collection applications.

焼却システムにおける集塵装置にはバグフィルタが主として使用されている。この種の集塵装置では、バグフィルタに高温の燃焼ガスを通過せしめる。従って、バグフィルタとしては高温時の耐熱性に加え、寸法安定性が要求され、基布としてガラス繊維のような耐熱性を持ちかつ高温の形態安定性に優れた無機繊維を採用し、この無機繊維基布にポリテトラフルオロエチレン(PTFE)繊維 やポリフェニレンサルファイド(PPS)繊維のような耐熱性でかつ濾過性に優れた有機繊維をニードルパンチなどにより植設することにより濾過層を形成したものが提案されている（特許文献１）。
特開２００４−１６０３８１号公報 Bag filters are mainly used for dust collectors in incineration systems. In this type of dust collector, high-temperature combustion gas is passed through the bag filter. Accordingly, in addition to heat resistance at high temperatures, the bag filter requires dimensional stability, and the base fabric is made of inorganic fibers having heat resistance like glass fiber and excellent high-temperature shape stability. A filter layer is formed by implanting heat-resistant and filterable organic fibers such as polytetrafluoroethylene (PTFE) fibers and polyphenylene sulfide (PPS) fibers on a fiber base fabric with a needle punch or the like. It has been proposed (Patent Document 1).
JP 2004-160381 A

焼却システムにおける集塵装置として濾過性能の向上が要求されることはもとよりであり、そのため、バグフィルタとして濾過面積の増大が必要であり、この要求に対しては大抵は長尺化により対処してきたが、円筒形状のような単純形状では濾過能力は既に限界に達しており、焼却システムにおける集塵装置として耐熱性及び形態安定性は確保しつつ、より一層の濾過能率を増大しうる新規な構造のフィルタが希求されている。他方、濾過能率向上の手段としてはプリーツ等の折り畳み構造として単位体積あたりの濾過面積の増大を図ることはこれまで周知慣用の手段であったが、焼却システムのような高温環境化で耐熱性及び耐久性を確保しつつ所期の濾過性能を得ることができるものはこれまでなかった。即ち、従来はプリーツ成形の場合、口元部及び底部といった両端の処理は樹脂加工に依拠するのが通常であったが、この場合に口元部及び底部に使用可能な樹脂の耐熱温度があまり高くないことから、フィルタとしての耐熱性が２００℃といった低い温度に制限されてしまっていた。そのため、濾布の本来の耐熱限界より大幅に低い温度が耐熱限界となっており、濾布が本来持っている機能を十分利用しているとはいえなかった。   Of course, improvement in filtration performance is required as a dust collector in an incineration system. Therefore, an increase in filtration area is required as a bag filter, and this requirement has been mostly dealt with by increasing the length. However, a simple shape such as a cylindrical shape has already reached its limit, and a novel structure that can further increase the filtration efficiency while ensuring heat resistance and form stability as a dust collector in an incineration system. Filters are sought after. On the other hand, as a means for improving the filtration efficiency, it has been a well-known and commonly used means to increase the filtration area per unit volume as a fold structure such as pleats. Until now, there has been no one that can achieve the desired filtration performance while ensuring durability. That is, conventionally, in the case of pleating, the processing at both ends, such as the mouth and bottom, usually relies on resin processing, but in this case, the heat-resistant temperature of the resin that can be used for the mouth and the bottom is not so high. For this reason, the heat resistance as a filter has been limited to a low temperature of 200 ° C. Therefore, the temperature significantly lower than the original heat resistance limit of the filter cloth is the heat resistance limit, and it cannot be said that the functions inherent to the filter cloth are fully utilized.

この発明はかかる現状に鑑みてなされたものであり、濾布の本来の機能を限界まで利用できるようにすることにあり、かつ焼却システムにおける集塵装置としても適した新規な構造の成形フィルタを提供することを目的とする。   The present invention has been made in view of the present situation, and is intended to make it possible to use the original function of a filter cloth to the limit, and to provide a molded filter having a novel structure suitable as a dust collector in an incineration system. The purpose is to provide.

この発明にあっては、成形フィルタは筒形状の濾布よりなり、濾布の中間部はプリーツ断面形状をなすが、口元部及び底部となる両端部は縫製構造をなしている。濾布のプリーツ断面形状の中間部は熱硬化性の樹脂の含浸・固化構造をなし、口元部及び底部となる両端部は樹脂は非含浸である。即ち、樹脂が非含浸の濾布の一端には当布が縫着されて成形フィルタの底部を構成し、他方、濾布の他端には保持環（スナップリング等）を包囲した口元布が縫着される。   In the present invention, the molded filter is made of a cylindrical filter cloth, and the middle part of the filter cloth has a pleated cross-sectional shape, but both the mouth part and the bottom part have a sewing structure. The middle part of the pleated cross-sectional shape of the filter cloth has a thermosetting resin impregnation / solidification structure, and both the mouth part and the bottom part are non-impregnated with resin. That is, the cloth is sewn to one end of the filter cloth not impregnated with resin to form the bottom of the molded filter, while the other end of the filter cloth has a mouth cloth surrounding a retaining ring (snap ring or the like). Sewn.

この発明において、濾布は、焼却システムなどの耐熱性を要する場合にあっては、無機繊維の織布等よる成る基布層と、基布層の片面におけるニードルパンチングなどによる植設構造のポリテトラフルオロエチレン(PTFE) 繊維やポリフェニレンサルファイド(PPS)繊維等の有機耐熱繊維より成る濾過層とにより構成されることが好ましい。   In the present invention, when heat resistance such as an incineration system is required, the filter cloth is made of a base fabric layer made of a woven fabric of inorganic fibers, etc., and a planted structure made of needle punching or the like on one side of the base fabric layer. It is preferably constituted by a filtration layer made of an organic heat resistant fiber such as tetrafluoroethylene (PTFE) fiber or polyphenylene sulfide (PPS) fiber.

耐熱用途の場合におけるこの発明の成形フィルタの製造方法にあっては、無機繊維の織布などよる成る基布層の片面に有機耐熱繊維より成る濾過層を形成して成る濾布を準備し、筒形状の前記濾布における軸線方向に沿った両端部位を除いた部位にポリテトラフルオロエチレン(PTFE)等の耐熱性及び濾過性に優れた熱硬化樹脂を含浸させ、熱硬化樹脂を含浸させた濾布を所定形状に付与しつつ所定温度に加熱し熱硬化樹脂を硬化させることにより濾布をプリーツ形状などの所定形状に成形し、熱硬化樹脂が含浸されない両端部位については縫製処理により口元部及び底部が形成される。   In the method for producing a molded filter of the present invention in the case of heat-resistant use, a filter cloth is prepared by forming a filter layer made of organic heat-resistant fibers on one side of a base fabric layer made of woven cloth of inorganic fibers, The tubular filter cloth was impregnated with a thermosetting resin excellent in heat resistance and filterability, such as polytetrafluoroethylene (PTFE), in a portion excluding both end portions along the axial direction, and impregnated with the thermosetting resin. The filter cloth is heated to a predetermined temperature while being given a predetermined shape, and the thermosetting resin is cured to form the filter cloth into a predetermined shape such as a pleat shape. And the bottom is formed.

耐熱性を厳しく要求されない一般用途の場合には濾布としてはポリエステルやナイロンやアクリルなどの合成繊維素材の織布若しくは不織布として構成することができ、この場合の熱硬化樹脂としては比較的耐熱性の低いフェノール樹脂や、メラミン樹脂であっても十分使用可能である。耐熱用途でない成形フィルタであっても、その製造方法は基本的には上記と同様であり、ポリエステルやナイロンやアクリルなどの合成繊維素材の織布若しくは不織布としての濾布における軸線方向に沿った両端部位を除いた部位にフェノール樹脂や、メラミン樹脂などの熱硬化性樹脂を含浸させ、熱硬化樹脂を含浸させた濾布に筒形状に持たせつつ所定温度に加熱し樹脂を硬化させることにより濾布をプリーツ形状などの所定形状に成形し、樹脂が含浸されない両端部位については縫製処理により口元部及び底部が形成される。   In general applications where heat resistance is not strictly required, the filter cloth can be configured as a woven or non-woven fabric of synthetic fiber material such as polyester, nylon or acrylic. In this case, the thermosetting resin is relatively heat resistant. Even a low phenol resin or a melamine resin can be used sufficiently. Even for molded filters that are not heat resistant, the manufacturing method is basically the same as described above, and both ends along the axial direction of the filter cloth as a woven fabric or nonwoven fabric of synthetic fiber materials such as polyester, nylon, and acrylic are used. Exclude the part by impregnating it with a thermosetting resin such as phenol resin or melamine resin, and let the filter cloth impregnated with the thermosetting resin have a cylindrical shape and heat it to a predetermined temperature to cure the resin. A cloth is formed into a predetermined shape such as a pleat shape, and a mouth portion and a bottom portion are formed by sewing processing at both end portions not impregnated with resin.

フィルタの口元部及び底部となる両端以外の部位に熱硬化樹脂を含浸させ、プリーツ形状を付しているため、高いろ過性能を得ることができると共に、両端には樹脂を含浸していないため、縫製による口元部及び底部の形成が可能であり、高いろ過性能を確保しつつ低コスト化を実現することができる。   Since the thermosetting resin is impregnated in the part other than both ends which become the mouth and bottom of the filter, and a pleated shape is attached, high filtration performance can be obtained, and both ends are not impregnated with resin. The mouth and bottom can be formed by sewing, and cost reduction can be achieved while ensuring high filtration performance.

プリーツ形状の濾布の両端の口元部及び底部は縫製処理であるため、従来の樹脂加工方式の両端処理のような熱硬化樹脂の耐熱性の限界の影響がないため、濾布を構成するPTFEなどの耐熱性繊維とした場合、その本来の耐熱性を有効活用することができ、３００〜４００℃といった最大温度が実現可能となり、燃焼システム用途として特化適合させることができ、しかもプリーツ形状による濾過性能向上の機能（濾過面積増大機能）は少しも損なわれることがない。   Since the mouth and bottom of both ends of the pleated filter cloth are sewn, there is no influence of the heat resistance limit of the thermosetting resin as in the case of both ends of the conventional resin processing method. When the heat resistant fiber is used, the original heat resistance can be effectively utilized, the maximum temperature of 300 to 400 ° C. can be realized, and it can be specially adapted as a combustion system application, and further, depending on the pleat shape The function of improving the filtration performance (filtering area increasing function) is not impaired at all.

以下、焼却システム用途に適合させた場合についてこの発明になる成形フィルタを詳細に説明すると、成形フィルタを構成する濾布は耐熱性繊維を含む不織布もしくは織布として構成される。耐熱性繊維としては耐熱性有機繊維やガラス繊維などの無機繊維として構成することができる。濾布は、好ましくは、無機繊維よる成る基布層と、基布層の片面における有機耐熱繊維より成る濾過層とにより濾布を構成することができる。基布層に採用する無機繊維としてはガラス繊維やセラミック繊維やカーボン繊維や玄武岩繊維のような高温時の寸法安定性に優れたものが好ましく、また、これらの無機繊維を織製することにより織布（無機繊維と有機繊維の交撚及び交織も含む）とすることが高温時の形態安定性の観点からより好ましい。濾布を構成する有機耐熱性繊維としてはポリテトラフルオロエチレン(PTFE) 繊維やポリフェニレンサルファイド(PPS)繊維やｍアラミド繊維やポリイミド繊維やポリフルオロカーボン繊維を挙げることができる。これらの有機耐熱性繊維は無機繊維基布に植設一体化され、濾布層を形成せしめられる。植設一体化の技術としては周知のニードルパンチを採用することができる。即ち、有機耐熱繊維は所定ステープル長の有機耐熱繊維ウエブとされ、有機耐熱繊維ウエブは基布となる無機繊維織布上に積層されニードルパンチによってガラス繊維織布としての基布に交絡一体化せしめられる。   Hereinafter, the molded filter according to the present invention will be described in detail when it is adapted for incineration system use. The filter cloth constituting the molded filter is configured as a nonwoven fabric or a woven fabric containing heat-resistant fibers. The heat resistant fiber can be configured as an inorganic fiber such as a heat resistant organic fiber or glass fiber. The filter cloth can preferably be constituted by a base cloth layer made of inorganic fibers and a filter layer made of organic heat-resistant fibers on one side of the base cloth layer. Inorganic fibers used for the base fabric layer are preferably those excellent in dimensional stability at high temperatures, such as glass fibers, ceramic fibers, carbon fibers, and basalt fibers, and weaving these inorganic fibers by weaving them. From the viewpoint of form stability at high temperatures, it is more preferable to use a cloth (including woven and woven fabrics of inorganic and organic fibers). Examples of the organic heat resistant fiber constituting the filter cloth include polytetrafluoroethylene (PTFE) fiber, polyphenylene sulfide (PPS) fiber, m-aramid fiber, polyimide fiber, and polyfluorocarbon fiber. These organic heat-resistant fibers are planted and integrated with an inorganic fiber base fabric to form a filter cloth layer. A well-known needle punch can be employed as a technique for implantation integration. That is, the organic heat-resistant fiber is an organic heat-resistant fiber web having a predetermined staple length, and the organic heat-resistant fiber web is laminated on an inorganic fiber woven fabric as a base fabric and entangled with a base fabric as a glass fiber woven fabric by a needle punch. It is done.

濾布は口元部及び底部となる両端以外は耐熱性熱硬化樹脂にて含浸される。耐熱性熱硬化樹脂としてはポリイミド系樹脂が好適であり、含浸方法としてはポリイミド系樹脂の分散液を濾布における有機耐熱繊維層に塗布若しくは浸漬し、乾燥させることで水分を飛ばす方法を採用することができる。ポリイミド系樹脂はプリーツ成形時の高熱によりに熱硬化せしめられ、これにより濾布のプリーツ形状（凹凸形状）を維持することができる。含浸熱硬化樹脂の含浸時にポリテトラフルオロエチレン(PTFE)樹脂などの耐熱性の樹脂を適量混合することができる。周知のように濾材中にPTFEを混入させることにより硫黄酸化物(SOx)成分の効果的な排出対策となる。また、プリーツ形状の補強のためプリーツ先端部のみを無機樹脂により所謂ゾル−ゲル法下で硬化させることも可能である。   The filter cloth is impregnated with a heat-resistant thermosetting resin except for both ends which become the mouth and bottom. As the heat-resistant thermosetting resin, a polyimide resin is suitable, and as the impregnation method, a method is adopted in which a dispersion of the polyimide resin is applied or immersed in an organic heat-resistant fiber layer in a filter cloth and dried to dry the moisture. be able to. The polyimide resin is thermally cured by the high heat at the time of pleat molding, thereby maintaining the pleated shape (uneven shape) of the filter cloth. An appropriate amount of a heat-resistant resin such as polytetrafluoroethylene (PTFE) resin can be mixed during impregnation with the impregnated thermosetting resin. As is well known, mixing PTFE into the filter medium is an effective measure for the emission of sulfur oxide (SOx) components. Moreover, it is also possible to harden only the front-end | tip part of a pleat with an inorganic resin under what is called a sol-gel method for reinforcement of a pleat shape.

口元部及び底部となる両端以外の部分に熱硬化樹脂を含浸させた濾布は、プリーツ成形等の熱成形工程により凹凸形状（波形形状）を付される。プリーツ成形のため濾布はプリーツ加工機を通される。プリーツ加工の温度としては１５０〜１８０℃の範囲であり、プリーツ加工時の高温により濾布における有機耐熱繊維層の部分に含浸された熱硬化樹脂が硬化され、熱成形形状（プリーツ形状）が熱固定される。また、熱硬化樹脂の含浸がされない両端部はプリーツ形状の熱固定はされない。   A filter cloth in which a portion other than both ends serving as a mouth portion and a bottom portion is impregnated with a thermosetting resin is provided with an uneven shape (corrugated shape) by a thermoforming process such as pleating. The filter cloth is passed through a pleating machine for pleating. The temperature of the pleating process is in the range of 150 to 180 ° C. The thermosetting resin impregnated in the organic heat resistant fiber layer portion of the filter cloth is cured by the high temperature during the pleating process, and the thermoformed shape (pleated shape) is heated. Fixed. Moreover, the both ends which are not impregnated with the thermosetting resin are not fixed in a pleated shape.

プリーツ加工された濾布は長手方向に縫製されること等により筒状にされ、口元部及び底部は縫製により処理される。まず、濾布における熱効果樹脂の含浸がされていない端部は円周方向にミシンがけ（縫製）されることで、プリーツ部分が潰され実質的に平坦となる。この平坦化された濾布の端部に口元部及び底部となる端部が形成される。底部の処理について説明すると、筒状の濾布の一端面に当布が当てられ、当布の縁部は濾布側に折り返され、折り返し部分が濾布の対向部にミシン掛け（縫着）され、濾布と当布とは一体化される（筒状に形成された濾布の端部が当布により閉鎖される）。当布の素材としては、セラミックやPTFE等の耐熱繊維の織布や不織布により構成される。また、口元部の処理としては、金属性のスナップリングを当布と同等の素材よりなる口元布によって縫い込み、これを濾布の他端に縫着する口元部及び底部の縫製用の糸としてはPTFEなどの耐熱性繊維のフィラメントを使用することができる。   The pleated filter cloth is formed into a cylindrical shape by sewing in the longitudinal direction, and the mouth and bottom are processed by sewing. First, the end of the filter cloth not impregnated with the heat effect resin is machined (sewn) in the circumferential direction, so that the pleat portion is crushed and becomes substantially flat. At the end portion of the flattened filter cloth, an end portion serving as a mouth portion and a bottom portion is formed. Explaining the processing of the bottom part, the cloth is applied to one end face of the cylindrical filter cloth, the edge of the cloth is folded back to the filter cloth side, and the folded part is sewn on the opposite part of the filter cloth (sewing) Then, the filter cloth and the cloth are integrated (the end of the tubular filter cloth is closed by the cloth). The material of this cloth is composed of a woven or non-woven fabric of heat-resistant fibers such as ceramic and PTFE. Also, as a treatment for the mouth portion, a metal snap ring is sewn with a mouth cloth made of the same material as the cloth, and this is sewn to the other end of the filter cloth as a thread for sewing the mouth portion and the bottom portion. Can use filaments of heat-resistant fiber such as PTFE.

図１はこの発明の成形フィルタの構造の実施形態を模式的に示しており、濾布１０はガラス繊維などの無機繊維よる成る織布として構成された基布層１２と、基布層１２に対してポリテトラフルオロエチレン(PTFE) 等の耐熱有機繊維をニードルパンチにより植毛することにより構成された濾層１４とを備える。濾層１４における口元と底部となる部位を除いた部位には熱硬化樹脂が含浸され、プリーツ加工により熱硬化樹脂が硬化することにより濾布１０はプリーツ状に成形される。   FIG. 1 schematically shows an embodiment of the structure of a molded filter according to the present invention. A filter cloth 10 includes a base cloth layer 12 configured as a woven cloth made of inorganic fibers such as glass fibers, and a base cloth layer 12. On the other hand, it comprises a filter layer 14 formed by implanting heat-resistant organic fibers such as polytetrafluoroethylene (PTFE) with a needle punch. The filter layer 14 is impregnated with a thermosetting resin except for the mouth and bottom parts, and the filter cloth 10 is formed into a pleated shape by curing the thermosetting resin by pleating.

熱成形後の濾布１０は図２及び図３に概略的に示すように円筒状にされ、そのため、図４に示すように断面においては円周方向に波型形状を呈する。排ガスは矢印ａのように波面から濾布１０に導入され、中心から矢印ｂのように排出されるようになっている。そして、図４に示すように、基布層１２が円筒の外側に、濾層１４が円筒の内側に来るようにされる。図３において、口元部及び底部となる長さ方向の端部10-1はプリーツ加工後も波状断面を呈してはいるが、樹脂が含浸されていないため、柔らかくなっている。口元部及び底部の形成のための準備工程として、濾布の端部10-1は図５に示すようにプリーツは平に潰され、Ｌ１のように円周方向に沿ってミシンがけされることにより平坦化される。図６にはこのようにミシンがけにより平坦化された後の濾布の縮径した端部10-1が模式的に図示されている。図６において１８は円形の当布であり、当布１８はバグフィルタの底部となる濾布１０の平坦化された端部（図６の下端）に当接せしめられ、当布１８の外周部は筒状の濾布１０の上面に対して折り返され、当布１８のこの折り返し部分１８Ａ（図８）は濾布１０に対してミシン掛けされ、図８でＬ２はミシン掛けによる縫製部分を示し、これによりバグフィルタの閉じた底部が得られる。他方、バグフィルタの口元となる縫製部分は図７により模式的に示されており、２２は金属性スナップリングであり、弾性鋼材帯片にて形成される。スナップリング２２は口元布２４により包囲され、口元布２４が両端で縫製されることによりスナップリング２２は口元布２４に縫いこまれる（縫着ラインをＬ３にて示す）。このようにして、スナップリング２２を縫着した口元布２４は濾布１０の口元となる端部（図８の上端）に装着され縫着される（縫込み線をＬ４にて示す）。   The filter cloth 10 after the thermoforming is formed into a cylindrical shape as schematically shown in FIGS. 2 and 3, and therefore has a corrugated shape in the circumferential direction in the cross section as shown in FIG. 4. The exhaust gas is introduced into the filter cloth 10 from the wavefront as indicated by an arrow a, and discharged from the center as indicated by an arrow b. Then, as shown in FIG. 4, the base fabric layer 12 is placed outside the cylinder, and the filter layer 14 is placed inside the cylinder. In FIG. 3, the end portion 10-1 in the length direction which becomes the mouth portion and the bottom portion has a wavy cross section even after pleating, but is soft because it is not impregnated with resin. As a preparatory step for forming the mouth and bottom portions, the filter cloth end 10-1 is flattened as shown in FIG. 5 and the pleats are crushed along the circumferential direction as shown in L1. Is flattened. FIG. 6 schematically shows the end portion 10-1 having a reduced diameter of the filter cloth after being flattened by sewing as described above. In FIG. 6, 18 is a circular cloth, and the cloth 18 is brought into contact with the flattened end (lower end in FIG. 6) of the filter cloth 10 which is the bottom of the bag filter, and the outer peripheral portion of the cloth 18. Is folded with respect to the upper surface of the tubular filter cloth 10, and the folded portion 18A (FIG. 8) of the cloth 18 is machined over the filter cloth 10. In FIG. 8, L2 indicates a sewing part by sewing. This gives a closed bottom of the bag filter. On the other hand, the sewing part which becomes the mouth of the bag filter is schematically shown in FIG. 7, and 22 is a metallic snap ring, which is formed of an elastic steel strip. The snap ring 22 is surrounded by the mouth cloth 24, and when the mouth cloth 24 is sewn at both ends, the snap ring 22 is sewn into the mouth cloth 24 (sewing line is indicated by L3). In this manner, the mouth cloth 24 to which the snap ring 22 is sewn is attached and sewn to the end portion (upper end in FIG. 8) of the filter cloth 10 (the sewing line is indicated by L4).

このようにして構成されたフィルタの集塵装置などへの装着は周知のものと同様である。即ち、図８において、２６は集塵装置のセルプレートであり、セルプレート２６に多数形成された開口部２８にフィルタが挿入され、スナップリング２２が開口部２８に表面の溝部を利用して嵌着される。そして、フィルタの内側より動作中のフィルタの形状保持のためのリテーナが挿入される。そして、この発明の好適変形実施形態として濾材のリテーナ側面に消臭機能や、脱水機能や、脱硫機能や、殺菌機能や、ダイオキシン分解機能用の付加的な機能を発揮せしめるための不織布や粒子層（本発明の付加機能層）を配置することができる。   The filter thus constructed is attached to a dust collector or the like in the same manner as a known one. That is, in FIG. 8, reference numeral 26 denotes a cell plate of the dust collector. A filter is inserted into a large number of openings 28 formed in the cell plate 26, and the snap ring 22 is fitted into the opening 28 using a groove on the surface. Worn. A retainer for maintaining the shape of the filter in operation is inserted from the inside of the filter. And as a preferred modified embodiment of the present invention, a non-woven fabric or a particle layer for exerting an additional function for a deodorizing function, a dehydrating function, a desulfurizing function, a sterilizing function, or a dioxin decomposing function on the retainer side of the filter medium (Additional functional layer of the present invention) can be disposed.

以上の説明は焼却システム用途等の耐熱性が必要な成形フィルタについてのものであるが、樹脂含浸濾布の熱硬化成形＋樹脂非含浸の両端縫製構造という本発明の技術的思想は耐熱性を要求されない一般用途にも実施可能であり、繊維素材が耐熱性を要求されないことと熱硬化樹脂として耐熱性が低い一般用途のものが使用可能になること以外は同様であり、冗長を回避するため実施形態につての説明は省略する。   The above explanation is for molded filters that require heat resistance, such as for incineration systems, but the technical idea of the present invention of thermosetting molding of resin-impregnated filter cloth + both-end sewing structure without resin impregnation is heat resistant. To avoid redundancy, it can be applied to general applications that are not required, and is the same except that the fiber material is not required to have heat resistance and that a thermosetting resin with low heat resistance can be used. Description of the embodiment is omitted.

縦糸1040DTEX、横糸1040DTEXのガラス繊維を、縦糸密度１４本／インチ、横糸密度１０本／インチで製織することによりガラス繊維基布（目付け320g/m2）を得た。このようにして得られた基布に、濾材として単糸2.2 DTEX（平均）で繊維長5.0センチメートルのポリフェニレンサルファイド(PPS)繊維（東洋紡株式会社の製品名プロコン）のウエブ（目付け130g/m2）を積層し、２６０℃でカレンダ掛けすることにより基布に圧着し、ニードルパンチングすることにより目付け４５０g/m2の濾布を得た。 Glass fiber base fabric (weighing 320 g / m 2 ) was obtained by weaving glass fibers of warp 1040DTEX and weft 1040DTEX at a warp density of 14 / inch and a weft density of 10 / inch. The base fabric thus obtained was used as a filter medium with a single yarn of 2.2 DTEX (average) and a polyphenylene sulfide (PPS) fiber (product name: Procon of Toyobo Co., Ltd.) with a fiber length of 5.0 centimeters (medium weight 130 g / m 2) ), Calendering at 260 ° C., press-bonding to the base cloth, and needle punching to obtain a filter cloth having a weight per unit area of 450 g / m 2 .

鈴江技研製ポリイミド樹脂混合液（製品名P902）を水と重量比５０：５０にて混合することにより分散液を得て、この分散液を濾布における濾材面における両端部以外の部位に塗布した。160℃で４０〜６０分乾燥させることで、水分の殆どを蒸発せしめた。濾材表面への樹脂固形分の付着量は５０g/m2であった。 Suzue Giken polyimide resin mixture (product name: P902) was mixed with water at a weight ratio of 50:50 to obtain a dispersion, and this dispersion was applied to portions other than both ends of the filter medium surface of the filter cloth. . Most of the water was evaporated by drying at 160 ° C. for 40 to 60 minutes. The amount of resin solids attached to the surface of the filter medium was 50 g / m 2 .

ポリイミド樹脂混合液を含浸乾燥させた後の濾布を畑野産業製の平板プリーツ加工機（プリーツ幅1800mm、プリーツ長25mmに通すことによりプリーツ加工を行った。プリーツ加工温度は180℃であった。   The filter cloth after impregnating and drying the polyimide resin mixed solution was pleated by passing it through a flat plate pleating machine manufactured by Hatano Sangyo (pleat width 1800 mm, pleat length 25 mm. The pleating temperature was 180 ° C.

このように得られた濾布を筒状にし、樹脂が含浸されていない端部におけるプリーツを潰しつつ1320DTEXのPTFE糸でミシン掛けすることで平坦化し、この平坦化された濾布の下端に400DTEXのPTFE不織布よりなる当布を当て、1320DTEXのPTFE糸でミシン掛けすることで、当布を縫着し、底部とした。そして、1.0mmの厚みで156mmの直径の鋼板性のスナップリングを320g/m2のPTFE繊維不織布よりなる口元布で包囲縫着し、筒状濾布の上端に1320DTEXのPTFE糸で縫着し、口元部となし、バグフィルタとした。 The filter cloth obtained in this way is made into a cylinder, flattened by sewing with 1320DTEX PTFE yarn while crushing the pleats at the end not impregnated with resin, and 400DTEX at the lower end of the flattened filter cloth This cloth made of PTFE non-woven fabric was applied, and the cloth was sewn with 1320DTEX PTFE thread to sew the cloth into the bottom. Then, a steel plate snap ring with a thickness of 1.0 mm and a diameter of 156 mm is surrounded and sewn with a mouth cloth made of 320 g / m 2 PTFE non-woven fabric, and is sewn to the upper end of the tubular filter cloth with 1320 DTEX PTFE thread. , Mouth and no, and bug filter.

このようにして得られたフィルタを集塵機（燃焼ガス温度＝１８０℃）を備えた焼却設備において１２０日間テストしたところ、通常の濾材長＝6000mmで径156mmの通常の濾布非プリーツのバグフィルタ（製品名（PSG50BP））との比較で設置本数ベースで従来の２８０本→２００本（濾過面積ベースで従来品の１／３）で同等の処理が可能であった。   When the filter thus obtained was tested for 120 days in an incinerator equipped with a dust collector (combustion gas temperature = 180 ° C.), a normal filter cloth non-pleated bag filter having a normal filter medium length = 6000 mm and a diameter of 156 mm ( Compared with the product name (PSG50BP)), it was possible to perform the same processing on the basis of the number of installations from the conventional 280 to 200 (1/3 of the conventional product on the basis of filtration area).

縦糸1040DTEX、横糸1040DTEXのガラス繊維を、縦糸密度１４本／インチ、横糸密度１０本／インチで製織することによりガラス繊維基布（目付け300g/m2）を得た。このようにして得られた基布に、濾材として単糸2.7DTEX（平均）で繊維長60mmのPTFE繊維（レンチング社（オーストラリア）の製品名プロフィレン）と単糸2.4DTEX（平均）で繊維長50mmのポリイミド繊維（イミテックファイバー社の商品名P84のもの）とを重量比２０：８０で混合したウエブ（目付け150g/m2）を積層し、270℃でカレンダ掛けし、ニードルパンチングすることにより目付け４５０g/m2の濾布を得た。 Glass fiber base fabric (weighing 300 g / m 2 ) was obtained by weaving glass fibers of warp 1040DTEX and weft 1040DTEX at a warp density of 14 / inch and a weft density of 10 / inch. The base fabric thus obtained was filtered with PTFE fibers (product name Profilene of Lenzing Co., Australia) with a single yarn of 2.7DTEX (average) and a single yarn of 2.4DTEX (average) as the filter medium. By laminating a web (weight per unit of 150g / m 2 ) mixed with 50mm polyimide fiber (Imitech Fiber's product name P84) at a weight ratio of 20:80, calendering at 270 ° C, and needle punching A filter cloth having a basis weight of 450 g / m 2 was obtained.

その後、耐熱性樹脂による含浸処理及びプリーツ加工の条件及び口元部及び底部の縫製構造は実施例１と同様であり、プリーツ形状の成形フィルタを得た。   Thereafter, the impregnation treatment with the heat resistant resin and the pleating process conditions and the sewing structure of the mouth portion and the bottom portion were the same as in Example 1, and a pleated shaped filter was obtained.

このように得られたフィルタの集塵機においても実施例１のそれと同等の性能を得ることができた。   In the filter dust collector thus obtained, the same performance as that of Example 1 could be obtained.

図１はこの発明の成形フィルタの濾布構造を模式的に示す断面図である。FIG. 1 is a cross-sectional view schematically showing the filter cloth structure of the molded filter of the present invention. 図２は図１の濾布の筒形状を模式的に示す図である。FIG. 2 is a diagram schematically showing the cylindrical shape of the filter cloth of FIG. 図３は口元部及び底部を形成前の筒形状の濾布の側面図である。FIG. 3 is a side view of a cylindrical filter cloth before the mouth and bottom are formed. 図４は図３のIV−IV線に沿った横断面図である。FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 図５は樹脂非含浸の濾布の端部のプリーツ部分のミシンがけによる平坦化状態を説明する模式的斜視図である。FIG. 5 is a schematic perspective view for explaining a flattened state by sewing of the pleat portion at the end of the filter cloth not impregnated with resin. 図６は樹脂非含浸の濾布の端部の平坦化後の濾布の側面図である。FIG. 6 is a side view of the filter cloth after flattening the end of the filter cloth not impregnated with resin. 図７はスナップリングを縫い込んで形成される口元部を示す断面図である。FIG. 7 is a sectional view showing a mouth portion formed by sewing a snap ring. 図８は縫製による口元部及び底部を備えたフィルタの完成状態を口元部の部位を破断して示す側面図である。FIG. 8 is a side view showing a completed state of a filter having a mouth portion and a bottom portion by sewing, with a portion of the mouth portion broken.

符号の説明Explanation of symbols

１０…濾布
１２…基布層
１４…濾層
１８…当布
２２…スナップリング
２４…口元布






DESCRIPTION OF SYMBOLS 10 ... Filter cloth 12 ... Base cloth layer 14 ... Filter layer 18 ... This cloth 22 ... Snap ring 24 ... Mouth cloth






Claims (4)

筒形状の濾布を具備し、濾布の中間部はプリーツ断面形状をなすが、口元部及び底部となる両端部は縫製により実質的に平坦化された構造であり、濾布のプリーツ断面形状の中間部は熱硬化性の樹脂が含浸・固化され、口元部及び底部となる両端部は樹脂は非含浸である成形フィルタ。   It has a cylindrical filter cloth, and the middle part of the filter cloth has a pleated cross-sectional shape, but the both ends of the mouth part and the bottom part are substantially flattened by sewing, and the pleated cross-sectional shape of the filter cloth An intermediate part of the filter is impregnated and solidified with a thermosetting resin, and the both ends of the mouth part and the bottom part are non-impregnated resin. 請求項１に記載の成形フィルタの製造方法であって、濾布を準備する工程と、濾布における筒形状の両端以外の部位に熱硬化性の樹脂を含浸させる工程と、樹脂を含浸させた濾布をプリーツ加工する工程と、濾布を筒形状に形成する工程と、樹脂が非含浸の濾布両端に縫製作業下にて口元部及び底部を平坦に形成する工程とを具備した成形フィルタの製造方法。   It is the manufacturing method of the shaping | molding filter of Claim 1, Comprising: The process which prepares a filter cloth, The process of impregnating thermosetting resin in parts other than the cylindrical both ends in a filter cloth, and the resin impregnated A molded filter comprising a step of pleating the filter cloth, a step of forming the filter cloth into a cylindrical shape, and a step of flatly forming the mouth portion and the bottom portion under sewing work on both ends of the filter cloth not impregnated with resin. Manufacturing method. 請求項２に記載の発明において、口元部及び底部を形成する前記工程は、樹脂の含浸がされない濾布の両端部を平坦化するため縫製する工程と、濾布の一端における縫製された平坦部に口元部を形成するべく縫製する工程と、濾布の他端における縫製された平坦部に底部を形成するべく縫製する工程とからなる成形フィルタの製造方法。   In the invention according to claim 2, the step of forming the mouth portion and the bottom portion includes a step of sewing to flatten both ends of the filter cloth not impregnated with resin, and a flat portion sewn at one end of the filter cloth. A method for producing a molded filter, comprising: a step of sewing to form a mouth portion at a second portion; and a step of sewing to form a bottom portion at a flat portion sewn at the other end of the filter cloth. 請求項１に記載の発明において、濾布における内側面にダイオキシン分解機能用の付加的な機能を発揮せしめるための不織布若しくは粒子層が具備せしめられている成形フィルタ。   2. The molded filter according to claim 1, wherein the inner surface of the filter cloth is provided with a non-woven fabric or a particle layer for exerting an additional function for dioxin decomposition function.
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WO2019004695A2 (en) * 2017-06-27 2019-01-03 동화 바이텍스 주식회사 Incinerable filter structure and method for manufacturing same
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JP7486179B2 (en) 2020-09-29 2024-05-17 株式会社相模商会 Cylindrical filter body for bag filter and method for manufacturing cylindrical filter body for bag filter

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