JPS63141619A - Production of filter element - Google Patents
Production of filter elementInfo
- Publication number
- JPS63141619A JPS63141619A JP28667686A JP28667686A JPS63141619A JP S63141619 A JPS63141619 A JP S63141619A JP 28667686 A JP28667686 A JP 28667686A JP 28667686 A JP28667686 A JP 28667686A JP S63141619 A JPS63141619 A JP S63141619A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- metal fibers
- liquid
- mat
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 239000000835 fiber Substances 0.000 claims abstract description 108
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 238000005245 sintering Methods 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims description 66
- 229910052751 metal Inorganic materials 0.000 claims description 66
- 238000000034 method Methods 0.000 claims description 16
- 239000002002 slurry Substances 0.000 abstract description 7
- 238000007667 floating Methods 0.000 abstract description 5
- 239000011800 void material Substances 0.000 abstract description 2
- 229920000914 Metallic fiber Polymers 0.000 abstract 6
- 238000013019 agitation Methods 0.000 abstract 1
- 238000001354 calcination Methods 0.000 abstract 1
- 238000004062 sedimentation Methods 0.000 description 14
- 238000007664 blowing Methods 0.000 description 9
- 230000007423 decrease Effects 0.000 description 8
- 239000011148 porous material Substances 0.000 description 8
- 230000005484 gravity Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 235000010413 sodium alginate Nutrition 0.000 description 1
- 229940005550 sodium alginate Drugs 0.000 description 1
- 239000000661 sodium alginate Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2027—Metallic material
- B01D39/2041—Metallic material the material being filamentary or fibrous
- B01D39/2044—Metallic material the material being filamentary or fibrous sintered or bonded by inorganic agents
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、全１ｔｕｔ焼結体からなるフィルタエレメン
トの製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing a filter element made entirely of 1 tut sintered body.
金属繊維焼結体が各種の流体に対するフィルタエレメン
トとして使用され１例えば１合成樹脂フィルムの製造装
置或いは合成繊維の製造装置における溶融樹脂の異物除
去用のフィルタエレメントとして使用されている。従来
、フィルタエレメントとして使用される金属繊維焼結体
は同一径の繊維を使用しており、空隙は全体的に比較的
均一となっている。Metal fiber sintered bodies are used as filter elements for various fluids, for example, for removing foreign matter from molten resin in synthetic resin film manufacturing equipment or synthetic fiber manufacturing equipment. Conventionally, metal fiber sintered bodies used as filter elements use fibers of the same diameter, and the voids are relatively uniform throughout.
上記金属繊維焼結体は三次元の空隙を有しており。 The metal fiber sintered body has three-dimensional voids.
フィルタエレメントとして使用すると、三次元の空隙に
異物を捕捉でき、従ってｒｉＩｉ捉異物量が多く、ろ過
圧をあまり上昇させることなく長期間使用できろものと
考えられていた。ところが２本発明者等が種々なろ過実
験を行った結果、上記フィルタエレメントは三次元空隙
を有しているにもかかわらず、主として表面に異物が堆
積してケーク化現象を止し、内部の空隙があまり有効に
作用しないことが判明した。また、従来より。When used as a filter element, it was thought that foreign matter could be trapped in the three-dimensional voids, so the amount of riIi trapped foreign matter would be large, and it could be used for a long period of time without increasing the filtration pressure too much. However, as a result of various filtration experiments carried out by the inventors of the present invention, it was found that although the filter element has three-dimensional voids, foreign matter mainly accumulates on the surface and prevents the caking phenomenon. It was found that the voids did not work very effectively. Also, more than before.
平均空隙径の異なるフィルタエレメントを、流体の流れ
方向に空隙径が徐々に小さくなるように積層して使用し
、径の大きい異物は上流のフィルタエレメントで捕捉し
、徐々に径の小さい異物を下流側のフィルタエレメント
で捕捉することによって効率良く異物を捕捉できること
が知られている。しかし、この場合にあっても、捕捉さ
れる異物は主として各フィルタエレメントの上流側表面
に、従って積層したフィルタエレメント間に堆積してお
り、内部の空隙があまり有効に使用されていないことが
判明した。Filter elements with different average pore diameters are stacked in such a way that the pore diameters gradually become smaller in the direction of fluid flow. Larger diameter foreign particles are captured by the upstream filter element, and smaller diameter particles are captured by the downstream filter element. It is known that foreign matter can be efficiently captured by capturing it with a filter element on the side. However, even in this case, it was found that the trapped foreign matter was mainly deposited on the upstream surface of each filter element, and thus accumulated between the stacked filter elements, and the internal voids were not used very effectively. did.
このことから、金属ＧｂＸ維焼結体からなるフィルタエ
レメントの内部空隙を有効に使用するには、Ｗ−み方向
に平均空隙径を徐々に小さくすることが考えられる。From this, in order to effectively use the internal voids of the filter element made of the metal GbX fiber sintered body, it is conceivable to gradually reduce the average void diameter in the W-direction.
しかしながら、従来、このように平均空隙径が厚み方向
に徐々に変化した金属繊維焼結体を製造する方法は知ら
れていなかった。However, conventionally, there has been no known method for producing a metal fiber sintered body in which the average pore diameter gradually changes in the thickness direction.
しかして１本発明の目的は、平均空隙径が厚み方向に徐
々に変化した金属繊維焼結体からなるフィルタエレメン
トの製造方法を提供するにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a method for manufacturing a filter element made of a sintered metal fiber body in which the average pore diameter gradually changes in the thickness direction.
上記目的を達成すべく為された本発明は、直径の異なる
少なくとも２種類以上の金属繊維を液中に分散させ、こ
の金属繊維を沈降させてマットを形成し、このマットを
焼結することを特徴とするフィルタエレメントの製造方
法を要旨とする。The present invention, which was made to achieve the above object, involves dispersing at least two types of metal fibers with different diameters in a liquid, allowing the metal fibers to settle to form a mat, and sintering this mat. This article summarizes the manufacturing method of the characteristic filter element.
ここで、金属繊維の沈降中、金属繊維を分散させた液は
そのまま、残してもよいし、金属繊維の沈降と同時に液
を金属繊維で形成されるマットを通して下方に抜いても
よい。Here, while the metal fibers are settling, the liquid in which the metal fibers are dispersed may be left as is, or the liquid may be drained downward through the mat formed of the metal fibers at the same time as the metal fibers are settling.
上記したように、直径の異なる少な（とも２種類以上の
金属繊維を液中に分散させ、この金属繊維を沈降させる
と、金属繊維の沈降速度はその直径に応じて変化し、直
径の大きいものは比較的早く沈降し、直径の小さいもの
は遅く沈降する。このため、金属繊維が堆積して形成し
たマットの下側は比較的直径の大きい金属繊維が多く、
上に行（程小さい直径の金属繊維が多（なる。従って、
このマットを焼結して作ったフィルタエレメントは、Ｗ
−み方向に平均繊維径が徐々に小さくなっており、それ
に応じて平均空隙径も徐々に小さくなっている。As mentioned above, when two or more types of metal fibers with different diameters are dispersed in a liquid and the metal fibers are allowed to settle, the sedimentation speed of the metal fibers changes depending on their diameter; The metal fibers settle relatively quickly, while those with a small diameter settle slowly.For this reason, there are many metal fibers with a relatively large diameter on the underside of the mat formed by the accumulation of metal fibers.
There are many metal fibers with a smaller diameter on the top. Therefore,
The filter element made by sintering this mat is W
The average fiber diameter becomes gradually smaller in the - direction, and the average pore diameter also becomes smaller accordingly.
ここで、複数の直径の金属繊維を用いた沈降工程を１回
行つで、所定厚さのマットを形成してもよいが。Here, a mat of a predetermined thickness may be formed by performing the sedimentation process once using metal fibers of a plurality of diameters.
この代わりに、沈降工程を複数回、金属繊維の平均繊維
径を徐々に小さくして繰り返し、所望厚さのマット°
を形成してもよい。このように沈降工程を繰り返して
金属繊維のマットを形成すると、マットの厚み方向の空
隙径の分布を一層大きくすることができる。なお。Instead, the sedimentation process is repeated multiple times with gradually decreasing average fiber diameter of the metal fibers to achieve the desired thickness of the mat.
may be formed. When a mat of metal fibers is formed by repeating the sedimentation process in this manner, the distribution of pore diameters in the thickness direction of the mat can be further increased. In addition.
沈降工程を複数回繰り返す場合には、全部の沈降工程に
おいて、常に異なる繊維径の金属繊維の組み合わせを使
用する必要はな（、どれかの沈降工程では単一繊維径の
金属繊維を用いてもよい。If the sedimentation process is repeated multiple times, it is not necessary to always use combinations of metal fibers with different fiber diameters in all sedimentation processes (although it is not necessary to use metal fibers with a single fiber diameter in any of the sedimentation processes). good.
以下２本発明の実施例を図面を参照して説明する。 Hereinafter, two embodiments of the present invention will be described with reference to the drawings.
第１図は本発明方法の実施に使用する装置の１例を概略
的に示すもので、１は抄紙槽、２は通水性を有するすの
こであり、この上に金属繊維を堆積させるためのもので
ある。３はすのこ２の上方に出し入れ可能に設けられた
遊心兼空気噴出板であり、上面側にのみ多数の空気噴出
孔４を有し内部に空気噴出孔４に通じる空気通路５を有
している。６は複数個の供給タンクであり、内部に金属
繊維を分散したスラリーを収容している。なお９図示は
省略しているが、同様な供給タンクが更に多数設けられ
ている。供給タンク内の金属繊維は、各供給タンク間で
それぞれ平均繊維径が異なっており、また、少なくとも
幾つかの供給タンクには、異なる繊維径の金属繊維が混
合して入れられている。各供給タンクに収容される金属
繊維の繊維径及び混合割合の１例としては次表の通りで
ある。なお、繊維径の単位はμ、織繊維長さは２．０〜
５０．０ 鰭程度である。FIG. 1 schematically shows an example of the apparatus used to carry out the method of the present invention, in which 1 is a papermaking tank, 2 is a water-permeable drainboard, on which metal fibers are deposited. It is. Reference numeral 3 designates a floating and air blowing plate which is installed above the drainboard 2 so as to be able to be taken in and out, and has a large number of air blowing holes 4 only on the top surface side, and has an air passage 5 communicating with the air blowing holes 4 inside. . Reference numeral 6 denotes a plurality of supply tanks, each of which contains a slurry in which metal fibers are dispersed. Note that although not shown in the figure, a large number of similar supply tanks are provided. The metal fibers in the supply tanks have different average fiber diameters among the supply tanks, and at least some of the supply tanks contain a mixture of metal fibers with different fiber diameters. An example of the fiber diameter and mixing ratio of the metal fibers accommodated in each supply tank is shown in the following table. The unit of fiber diameter is μ, and the woven fiber length is 2.0~
50.0 It is about the size of a fin.
第 １ 表
次に、上記装置を用いたフィルタエレメントの製造方法
を説明する。Table 1 Next, a method for manufacturing a filter element using the above apparatus will be explained.
まず、供給タンクＩより１平均繊維径３０μの金属繊維
を含んだスラリーを抄紙槽１に供給し、必要に応じ、撹
拌翼（図示せず）等によって機械的に攪拌し。First, a slurry containing metal fibers having an average fiber diameter of 30 μm is supplied from the supply tank I to the papermaking tank 1, and is mechanically stirred using a stirring blade (not shown) or the like as necessary.
次いで空気噴出板３より空気を噴出してその上方で金属
繊維を液中に分散させる。金属繊維が液中に適当に分散
した後、空気噴出板３からの空気噴出を停止し。Next, air is ejected from the air ejection plate 3 to disperse the metal fibers in the liquid above it. After the metal fibers are properly dispersed in the liquid, the air jet from the air jet plate 3 is stopped.
この空気噴出板３を引き抜（と、液中に浮遊していた金
蒸繊維はすのこ２上に沈降を始める。同時に抄紙槽１の
下端に通しる弁７を開いて液をすのこ２を通して排出す
る。この動作により、金属繊維がすのこ２上にほぼ水平
に堆積してマットを形成するつなお、この時。When this air blowing plate 3 is pulled out, the gold vapor fibers floating in the liquid begin to settle on the grates 2. At the same time, the valve 7 that passes through the lower end of the papermaking tank 1 is opened and the liquid is discharged through the grates 2. Due to this operation, the metal fibers are deposited almost horizontally on the grates 2 to form a mat.
抄紙槽１内の液は全部族いてもよいし、液面が空気噴出
板３の位置まで低下した後、液排出を停止してもよい。The liquid in the papermaking tank 1 may be completely drained, or the liquid discharge may be stopped after the liquid level has decreased to the position of the air jet plate 3.
次に、空気噴出板３を図示のように元の位置に戻し。Next, return the air blowing plate 3 to its original position as shown.
供給タンク■より、繊維径３０μと繊維径２０μの金属
ｔ６．ｌｉ Ｉｍを２対１の割合で含んだスラリーを供
給し、前回と同様に撹拌後空気噴出板３がら空気を噴出
してその上方で、金属繊維を液中に均一に分散させる。From the supply tank ■, metal t6. with fiber diameter 30μ and fiber diameter 20μ. A slurry containing li Im at a ratio of 2:1 is supplied, and as in the previous step, after stirring, air is blown out from the air blowing plate 3 to uniformly disperse the metal fibers in the liquid above it.
この動作の際、空気噴出板３はすのこ２上に堆積した金
属繊維が乱れるのを防止する。なお、抄紙層１内の液を
抜いた後、供給タンク■からスラリーを供給する場合に
は、空気噴出板３の高さまで、予め液を下方から静かに
充満させておく。金属繊維が液中で分散された後。During this operation, the air blowing plate 3 prevents the metal fibers deposited on the grates 2 from being disturbed. In addition, when supplying slurry from the supply tank (2) after draining the liquid in the papermaking layer 1, the liquid is gently filled from below to the height of the air blowing plate 3 in advance. After the metal fibers are dispersed in the liquid.
空気噴出板３からの空気噴出を停止し、この空気噴出板
３を引き抜くと、液中に浮遊していた金属繊維が沈降を
はじめる。同時に弁７を開いて液を下方に排出すると、
浮遊していた金属繊維は、先にすのこ２上に堆積してい
た金属繊維マット上に堆積し、より厚いマットを形成す
る。この時、金９繊維の沈降速度は繊維径によって変化
し、繊維径の大きいものが早く沈降し。When the air jetting from the air jetting plate 3 is stopped and the air jetting plate 3 is pulled out, the metal fibers floating in the liquid begin to settle. At the same time, open valve 7 and drain the liquid downward.
The floating metal fibers are deposited on the metal fiber mat that was previously deposited on the grates 2, forming a thicker mat. At this time, the settling speed of the gold 9 fibers changes depending on the fiber diameter, and those with larger diameters settle faster.
繊維径の小さいものが遅く沈降する。このため、すのこ
２上に堆積した金属繊維のうち先に沈降した部分即ち下
層の部分は繊維径の大きいもの（繊維径３０／７）が多
く、上になるに従い繊維径の大きい金属繊維の８ｑ合が
減少する。ただし、この場合には金属繊維として上記し
たように繊維径３０μのものと２０μのものを２対１の
割合で混合したものを使用しているので、工「積した金
属繊維の最上部においても繊維径３０μのものがかなり
含まれている。この最上部における混合割合が１対１程
度になるように沈降速度を選定することが好ましい。Fibers with smaller diameters settle more slowly. For this reason, among the metal fibers deposited on the drainboard 2, the part that settled first, that is, the lower layer part, has many large fiber diameters (fiber diameter 30/7), and as you move up, 8q of metal fibers with larger fiber diameters decreases. However, in this case, as mentioned above, the metal fibers used are a mixture of fiber diameters of 30 μm and 20 μm in a ratio of 2:1, so even the top of the piled metal fibers A considerable amount of fibers with a diameter of 30 μm are included. It is preferable to select the sedimentation rate so that the mixing ratio at the top is approximately 1:1.
上記した沈降工程において、ｔａ維径の異なる金属繊維
をマ・ノドの厚み方向に分布させるが、この分布は。In the above-mentioned sedimentation process, metal fibers with different ta fiber diameters are distributed in the thickness direction of the tongue.
金属繊維の沈降速度、沈降距離、沈降時間等によって影
苦を受けるので、これらを適当に設定することにより、
所望の繊維分布を得ることができる。沈降速度は。Since it is affected by the settling speed, settling distance, settling time, etc. of the metal fiber, by setting these appropriately,
A desired fiber distribution can be obtained. What is the sedimentation rate?
金属繊維の比重、繊維径、長さ５液の比重、粘度等の１
４を受けるので、これらを適当に設定する。使用する液
としては、水でもよいが、比重の大きいステンレス線材
に対しては１比重の大きいフレオン、アルギン酸ソーダ
水溶液などが好ましい。沈降時間はすのこ２を通す液の
排出速度の影響を受けるので、この速度を調整すればよ
い。長い沈降時間が必要な場合には、液の排出を止め、
金属繊維の自然沈降のみを利用してずのこ２上に堆積さ
せてもよい。Specific gravity of metal fiber, fiber diameter, length 5 Specific gravity of liquid, viscosity, etc.
4, so set these appropriately. The liquid to be used may be water, but for stainless steel wires with a high specific gravity, Freon, a sodium alginate aqueous solution, etc. having a high specific gravity are preferable. Since the settling time is affected by the rate of discharge of the liquid through the drainboard 2, this rate may be adjusted. If a long settling time is required, stop draining the liquid and
The metal fibers may be deposited on the gridiron 2 using only the natural sedimentation of the metal fibers.
次に、上記と同様の動作を供給タンク■〜■からのスラ
リーを用いて繰り返し行い、すのこ２上に金属繊維マッ
トを形成する。かくして、第２図に示すように金属繊維
８をほぼ水平に堆積させたマット９が形成され、そのマ
ットの最下層は繊維径３０μの金属繊維で構成され、上
層になるに従い繊維径３０μの金属繊維の割合が低下し
て繊維径２０μの割合が増加し、その後繊維径２０μの
割合が減少して繊維径１２μが増加し、最上層は殆どが
繊維径１２μの金属繊維となっている。即ち、このマッ
ト９は最下層から上に行くに従い、金属繊維の平均繊維
径が徐々に小さくなっている。Next, the same operation as above is repeated using the slurry from the supply tanks ① to ② to form a metal fiber mat on the drainboard 2. In this way, a mat 9 is formed in which the metal fibers 8 are deposited almost horizontally, as shown in FIG. The proportion of fibers decreases and the proportion of fibers with a diameter of 20μ increases, and then the proportion of fibers with a diameter of 20μ decreases and the proportion of fibers with a diameter of 12μ increases, and the top layer is mostly metal fibers with a fiber diameter of 12μ. That is, in this mat 9, the average fiber diameter of the metal fibers gradually decreases from the bottom layer to the top.
抄紙槽１で形成したマット９を、その後、焼結すること
により、フィルタエレメントが製造される。かくして製
造されたフィルタエレメントは、厚み方向に平均繊維径
が徐々に小さくなっており、それに応じて平均空隙径も
徐々に小さくなっている。The mat 9 formed in the papermaking tank 1 is then sintered to produce a filter element. In the filter element manufactured in this way, the average fiber diameter gradually decreases in the thickness direction, and the average pore diameter also gradually decreases accordingly.
なお、上記実施例では、平均繊維径の異なる金属繊維を
用いて、複数回沈降を行うことにより、一つのマットを
形成したが、この代わりに、所定厚さのマノ１−を形成
するに必要な金属繊維（異なる繊維径のものを含む）を
、抄紙槽で分散させ、１回の沈降工程により所望厚さの
マットを形成してもよい。ただし、実施例のように複数
回に分けて沈降を行う方が、フィルタエレメント内の繊
維径の所望の分布を容易に達成することができる利点が
ある。In the above example, one mat was formed by performing sedimentation multiple times using metal fibers with different average fiber diameters. Metal fibers (including those with different fiber diameters) may be dispersed in a papermaking tank to form a mat of a desired thickness in a single sedimentation step. However, performing the sedimentation in multiple steps as in the example has the advantage that the desired distribution of fiber diameters within the filter element can be easily achieved.
また１、上記実施例では、供給タンクに予め各種金属ｌ
Ａｌ１維のスラリーを収容しておき、これを必要に応じ
抄紙槽に供給したが、この代わりに、抄紙槽内に分散用
の液と必要な金属繊維を投入し、この位置で混合５分散
させるようにしてもよい。更に、抄紙槽内で金属繊維を
浮遊させるために、空気噴出板を利用したが、この代わ
りに他の手段９例えば超音波発振子を利用してもよいこ
とは言うまでもない。In addition, 1. In the above embodiment, various metals are preliminarily placed in the supply tank.
A slurry of Al1 fibers was stored and supplied to the papermaking tank as needed, but instead, a dispersion liquid and the necessary metal fibers were put into the papermaking tank and mixed and dispersed at this position. You can do it like this. Furthermore, although the air blowing plate was used to suspend the metal fibers in the papermaking tank, it goes without saying that other means 9, such as an ultrasonic oscillator, may be used instead.
以上の説明から明らかなように１本発明方法は、異なる
繊維径の金属繊維を液中で沈降させてマットを形成し、
そのマットを焼結してフィルタエレメントを製造するも
のであるので、でき上がったフィルタエレメントでは厚
み方向に平均繊維径が徐々に小さくなっており、それに
応じて平均空隙径も徐々に小さくなっており、きわめて
ろ過特性の良いフィルタエレメントを製造することがで
きるという効果を有している。As is clear from the above explanation, one method of the present invention is to form a mat by sedimenting metal fibers of different fiber diameters in a liquid,
Since the filter element is manufactured by sintering the mat, the average fiber diameter of the finished filter element gradually decreases in the thickness direction, and the average pore diameter also gradually decreases accordingly. This has the effect that a filter element with extremely good filtration characteristics can be manufactured.
第１図は本発明方法の実施に用いる装置の１例を概略的
に示す断面図、第２図はその装置で製造したマットの一
部を概略的に示す断面図である。FIG. 1 is a cross-sectional view schematically showing an example of an apparatus used to carry out the method of the present invention, and FIG. 2 is a cross-sectional view schematically showing a part of a mat manufactured using the apparatus.
Claims (3)
液中に分散させ、この金属繊維を沈降させてマットを形
成し、このマットを焼結することを特徴とするフィルタ
エレメントの製造方法。(1) A method for producing a filter element, which comprises dispersing at least two types of metal fibers with different diameters in a liquid, allowing the metal fibers to settle to form a mat, and sintering the mat.
維で形成されるマットを通して下方に抜くことを特徴と
する特許請求の範囲第１項記載のフィルタエレメントの
製造方法。(2) The method for manufacturing a filter element according to claim 1, characterized in that when the metal fibers are sedimented, the liquid is simultaneously drawn downward through a mat formed of the metal fibers.
属繊維を液中に分散させ、この金属繊維を沈降させる工
程を、金属繊維の平均繊維径を徐々に小さくして複数回
繰り返し、マットを形成することを特徴とする特許請求
の範囲第１項記載のフィルタエレメントの製造方法。(3) The process of dispersing at least two types of metal fibers with different diameters in a liquid and allowing the metal fibers to settle is repeated multiple times while gradually reducing the average fiber diameter of the metal fibers to form a mat. A method for manufacturing a filter element according to claim 1, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28667686A JPS63141619A (en) | 1986-12-03 | 1986-12-03 | Production of filter element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28667686A JPS63141619A (en) | 1986-12-03 | 1986-12-03 | Production of filter element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63141619A true JPS63141619A (en) | 1988-06-14 |
| JPH0360522B2 JPH0360522B2 (en) | 1991-09-17 |
Family
ID=17707521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28667686A Granted JPS63141619A (en) | 1986-12-03 | 1986-12-03 | Production of filter element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63141619A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06277422A (en) * | 1993-03-23 | 1994-10-04 | Fuirutoreeshiyon Kk | Production of filter medium and filter medium produced by the method |
| JP2001517273A (en) * | 1997-03-31 | 2001-10-02 | ファイバーマーク インコーポレイテッド | Sheet of metal fiber and metal powder and method for producing the same |
| JP2006205161A (en) * | 2005-01-28 | 2006-08-10 | Mann & Hummel Gmbh | Oil filter unit |
| JP2009008071A (en) * | 2007-05-22 | 2009-01-15 | Ibs Filtran Kunststoff Metallerzeugnisse Gmbh | Oil filter apparatus |
-
1986
- 1986-12-03 JP JP28667686A patent/JPS63141619A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06277422A (en) * | 1993-03-23 | 1994-10-04 | Fuirutoreeshiyon Kk | Production of filter medium and filter medium produced by the method |
| JP2001517273A (en) * | 1997-03-31 | 2001-10-02 | ファイバーマーク インコーポレイテッド | Sheet of metal fiber and metal powder and method for producing the same |
| JP2006205161A (en) * | 2005-01-28 | 2006-08-10 | Mann & Hummel Gmbh | Oil filter unit |
| JP2009008071A (en) * | 2007-05-22 | 2009-01-15 | Ibs Filtran Kunststoff Metallerzeugnisse Gmbh | Oil filter apparatus |
| US8038877B2 (en) | 2007-05-22 | 2011-10-18 | Ibs Filtran Kunststoff-/Metallerzeugnisse Gmbh | Oil filter apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0360522B2 (en) | 1991-09-17 |
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