JP2014008443A

JP2014008443A - Filter element of cartridge filter element for filtration in industrial dust collector

Info

Publication number: JP2014008443A
Application number: JP2012145754A
Authority: JP
Inventors: Tomoko Yui; 知子油井
Original assignee: AMC KK
Current assignee: AMC KK
Priority date: 2012-06-28
Filing date: 2012-06-28
Publication date: 2014-01-20

Abstract

PROBLEM TO BE SOLVED: To realize a filter element of a cartridge filter element for filtration, which has a wide filtration area and on which collected pulverulent bodies hardly remain.SOLUTION: In a pleated filter element which has continuous folds having an inverted V-shape, a height of the folds is not uniform, and folds P1 and P2 that have a different height are arranged so as to coexist in the filter element.

Description

この発明は、産業用の集塵機に使用される固気分離フィルターエレメントの濾材に関し、特にエレメントの小型化に寄与するとともに、目詰まりし難い濾材に関する。 The present invention relates to a filter medium for a solid-gas separation filter element used in an industrial dust collector, and more particularly to a filter medium that contributes to miniaturization of the element and hardly clogs.

集塵機等において、吸い込んだ空気より塵等の粉体（固形分）を捕集して濾過・分離するためにフィルターエレメントが使用されている。 In a dust collector or the like, a filter element is used to collect powder (solid content) such as dust from inhaled air and to filter and separate it.

図５はこの種のフィルターエレメントを示すものであり、筒状の濾材３２の両端を、エンドプレート３０および３１で支持したものを例示している。 FIG. 5 shows this kind of filter element, and illustrates an example in which both ends of a cylindrical filter medium 32 are supported by end plates 30 and 31.

この種のカートリッジフィルターエレメントにおいては、図６に示すように濾材３２は逆Ｖ字状の襞Ｐを連続させたプリーツ状のものとしていた（特許文献１）。 In this type of cartridge filter element, as shown in FIG. 6, the filter medium 32 has a pleated shape in which inverted V-shaped ridges P are continuous (Patent Document 1).

特許第２７５５５５８号公報Japanese Patent No. 2755558

前記のプリーツ状の濾材は、プリーツを有しない円筒形の濾材に比べ一定体積内での濾過面積を数倍大きくとることができる。例えば、直径１５０mm×長さ３０００mmの円筒形濾材の濾過面積は１．４ｍ²であるが、これに比べ同じ直径１５０mmのプリーツ型濾材の場合は長さが４５０mmで１．４ｍ²にすることができ、実に１／６以下の体積になる。 The pleated filter medium can take a filtration area several times larger within a certain volume than a cylindrical filter medium having no pleats. For example, the filtration area of a cylindrical filter medium having a diameter of 150 mm and a length of 3000 mm is 1.4 m ^{2. In} contrast, in the case of a pleated filter medium having the same diameter of 150 mm, the length may be 450 mm and 1.4 m ^2. The volume is actually 1/6 or less.

このため濾材を小型化できることにより、集塵機全体の体積が少なくてすむのでその価格を安くすることができ、プリーツ状の濾材を採用したカートリッジフィルターエレメントを採用する集塵機が増えている For this reason, the size of the filter medium can be reduced, so the volume of the entire dust collector can be reduced, so that the price can be reduced, and the number of dust collectors that employ cartridge filter elements that employ pleated filter media is increasing.

しかしながら、その反面、濾材を逆Ｖ字状の襞を連続させたプリーツ状とすることにより、底が鋭角な谷部が隣り合う襞同士の間に生じることとなり、逆流洗浄（カウンターブロー）時に捕集粉体を濾材内部からの逆風により剥離して濾材外に捕集しようとする際に、捕集粉体が上記の谷部に残ってしまう現象を生じ、これにより、濾過面積の多くが目詰りしデッドスペースになるという問題を生じた。この現象は特に粘着性のある粉体、米糠、トナー類に生じやすくフィルターの圧損を押し上げる原因となっていた。 However, on the other hand, by making the filter medium into a pleated shape with a series of inverted V-shaped ridges, valleys with sharp bottoms are formed between adjacent ridges, and are captured during backwashing (counter blow). When the powder collection is peeled off by the back wind from the inside of the filter medium and collected outside the filter medium, a phenomenon occurs in which the collected powder remains in the above valleys, which increases the filtration area. The problem of clogging and dead space occurred. This phenomenon is particularly likely to occur in sticky powder, rice bran, and toners, and has been a cause of increasing the pressure loss of the filter.

この発明は上記の従来技術の問題点に鑑みて創作されたものであり、一定体積内での濾過面積をより広くできるとともに、目詰まりしにくい濾過用カートリッジフィルターエレメントの濾材を提供することを目的とする。 The present invention was created in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide a filter medium for a cartridge filter element for filtration that can increase the filtration area within a certain volume and is less likely to clog. And

すなわち、この発明の濾過用カートリッジフィルターエレメントの濾材は、逆Ｖ字状の襞の連続からなるプリーツ状の濾材において、襞の高さを一様にせず、異なる高さの襞をおりまぜて配したことを特徴とする。 That is, the filter medium of the cartridge filter element for filtration according to the present invention is a pleated filter medium composed of a series of inverted V-shaped ridges, and the ridge heights are not made uniform, but the ridges of different heights are mixed and arranged. It is characterized by that.

また、請求項２の発明は前記の濾材において、逆Ｖ字状の襞の山部をＶ字状に折ることにより、異なる高さの襞を配する手段としたことを特徴とする。 The invention of claim 2 is characterized in that, in the above-mentioned filter medium, the inverted V-shaped ridges are folded in a V-shape to provide ridges having different heights.

また、請求項３の発明は前記の濾材において、高さの高い逆Ｖ字状の高襞同士の間に高さの低い逆Ｖ字状の低襞を介在させることにより、異なる高さの襞を配する手段としたことを特徴とする。 According to a third aspect of the present invention, in the above-mentioned filter medium, the ridges having different heights are provided by interposing a low inverted V-shaped ridge between the high inverted V-shaped ridges. It is characterized by being a means of arranging.

図７に示すように逆Ｖ字状の襞の谷同士の間隔Ａと、山の頂部同士の間隔Ｂは等しいが、これを円筒形に丸めた場合、図６に示すように山の頂部同士が開く結果、山の頂部同士の間隔Ｂは谷同士の間隔Ａの約２倍大きくなる。例えば、直径１５０mm、長さが４５０mmのプリーツ型濾材の場合、それぞれ５mmであったＡ、Ｂの寸法は円筒形に丸めることによりＡはそのままであるが、Ｂは１１mmとなる。 As shown in FIG. 7, the interval A between the inverted V-shaped trough valleys is equal to the interval B between the tops of the peaks, but when this is rounded into a cylindrical shape, the tops of the peaks as shown in FIG. As a result, the interval B between the tops of the peaks is approximately twice as large as the interval A between the valleys. For example, in the case of a pleated filter medium having a diameter of 150 mm and a length of 450 mm, the dimensions of A and B, which were 5 mm, are rounded into a cylindrical shape, but A remains unchanged, but B becomes 11 mm.

請求項２に記載の発明は前記の広がった外側間隔を利用して、図１、２、８に示すように逆Ｖ字状の高襞Ｐ１の山部をＶ字状に折ることにより外周側から低襞Ｐ２を追加するものである。これにより濾材面積を６０％増加させることができ、集塵機缶体体積は、更にコンパクトになり安価にすることができる。例えば、直径１５０mm、長さが４５０mmのプリーツ型濾材の場合、１．４ｍ²であった濾過面積は２．２ｍ²となる。 The invention according to claim 2 utilizes the widened outer space to fold the peak portion of the inverted V-shaped high collar P1 into a V shape as shown in FIGS. To low P2 is added. As a result, the area of the filter medium can be increased by 60%, and the dust collector can body volume can be made more compact and inexpensive. For example, in the case of a pleated filter medium having a diameter of 150 mm and a length of 450 mm, the filtration area which was 1.4 m ² is 2.2 m ² .

また、振動で低襞Ｐ２のＰ点が高襞Ｐ１の側面に当たり捕集された粉体を叩き落す効果がみられ、これにより圧力損失の改善が図られる効果も生じる。 In addition, the effect that the point P of the low ridge P2 hits the side surface of the high ridge P1 by vibration and knocks off the collected powder is seen, thereby producing an effect of improving the pressure loss.

請求項３の発明においては、図３、４、９に示すように高さの高い逆Ｖ字状の高襞Ｐ３同士の間に高さの低い逆Ｖ字状の低襞Ｐ４を介在させるものであるが、この場合、高襞Ｐ３の谷同士の間隔Ｃを狭めることにより、低襞Ｐ４を介在させる寸法を確保することにより、濾材面積を増加させることが可能となる。 In the invention of claim 3, as shown in FIGS. 3, 4, and 9, a low inverted V-shaped low ridge P <b> 4 is interposed between high inverted V-shaped high ridges P <b> 3. However, in this case, it is possible to increase the area of the filter medium by reducing the distance C between the valleys of the high ridges P3 to ensure the dimension for interposing the low ridges P4.

また、振動で低襞Ｐ４のＰ点が高襞Ｐ３の側面に当たり捕集された粉体を叩き落す効果がみられ、これにより圧力損失の改善が図られる効果も生じる。 In addition, an effect is seen in which the P point of the low ridge P4 hits the side surface of the high ridge P3 due to vibration, and the collected powder is struck down, thereby producing an effect of improving the pressure loss.

さらに、前記の低襞Ｐ４は、逆流洗浄時に捕集粉体が残留しやすい隣り合う襞高襞Ｐ３同士の底が鋭角な谷部に介在されるので、逆風の流れが効果を発揮し残留粉体が少なくなり圧力損失の改善が図られる効果も生じる。 In addition, the low soot P4 has the bottom of the adjacent soot and soot P3 where collected powder tends to remain at the time of backwashing to be interposed in a sharp valley, so that the flow of backwind is effective and the residual powder There is also an effect that the body is reduced and the pressure loss is improved.

以上の高襞、低襞の寸法組合せは捕集する粉体の特性に合わせて変えることができ、それにより粉体捕集、逆洗払落しの効果が高められ産業用の集塵機の能力を高めることができる。 The above-mentioned high and low dimensional combinations can be changed according to the characteristics of the powder to be collected, thereby increasing the effect of powder collection and backwashing and increasing the capacity of industrial dust collectors. be able to.

この発明の濾過用カートリッジフィルターエレメントの濾材の第１実施例の斜視図。The perspective view of 1st Example of the filter medium of the cartridge filter element for filtration of this invention. 同上、底面図。Same as above, bottom view. この発明の濾過用カートリッジフィルターエレメントの濾材の第２実施例の斜視図。The perspective view of 2nd Example of the filter medium of the cartridge filter element for filtration of this invention. 同上、底面図。Same as above, bottom view. 従来技術の濾過用カートリッジフィルターエレメントの斜視図。The perspective view of the cartridge filter element for filtration of a prior art. 同上、濾材の底面図。Same as above, bottom view of filter medium. 従来技術の濾過用カートリッジフィルターエレメントの濾材の展開状態の拡大図。The enlarged view of the expansion | deployment state of the filter medium of the cartridge filter element for filtration of a prior art. この発明の濾過用カートリッジフィルターエレメントの濾材の第１実施例の展開状態の拡大図。The expanded view of the unfolding state of 1st Example of the filter medium of the cartridge filter element for filtration of this invention. この発明の濾過用カートリッジフィルターエレメントの濾材の第２実施例の展開状態の拡大図。The enlarged view of the expansion | deployment state of 2nd Example of the filter medium of the cartridge filter element for filtration of this invention.

以下、この発明の具体的実施例を添付図面に基づいて説明する。図１、２、８はこの発明の濾過用カートリッジフィルターエレメントの濾材の第１実施例を示す図であり、ここでは断面真円状のエレメントを想定している。この発明の濾材１はプリーツ状のものであり、逆Ｖ字状の高襞Ｐ１の山部をＶ字状に折ることにより、異なる高さの低襞Ｐ２を配した構成としている。 Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings. 1, 2 and 8 are views showing a first embodiment of the filter medium of the cartridge filter element for filtration according to the present invention. Here, an element having a perfect circular section is assumed. The filter medium 1 of the present invention has a pleated shape, and has a configuration in which low ridges P2 having different heights are arranged by folding a peak portion of an inverted V-shaped high ridge P1 into a V shape.

図３、４、９はこの発明の濾過用カートリッジフィルターエレメントの濾材の第２実施例を示す図であり、ここでは断面真円状のエレメントを想定している。この発明の濾材２はプリーツ状のものであり、高さの高い逆Ｖ字状の高襞Ｐ３同士の間に高さの低い逆Ｖ字状の低襞Ｐ４を介在させた構成としている。 3, 4 and 9 are views showing a second embodiment of the filter medium of the cartridge filter element for filtration according to the present invention. Here, an element having a perfect circular section is assumed. The filter medium 2 of the present invention has a pleated shape, and has a structure in which a low inverted V-shaped low ridge P4 is interposed between high inverted V-shaped high ridges P3.

１（第１実施例の）濾材
２（第２実施例の）濾材
Ｐ１（第１実施例の）高襞
Ｐ２（第１実施例の）低襞
Ｐ３（第２実施例の）高襞
Ｐ４（第２実施例の）低襞 1 (first embodiment) filter medium 2 (second embodiment) filter medium P1 (first embodiment) Takatsuki P2 (first embodiment) low kite P3 (second embodiment) Takatsuki P4 ( Low level)

Claims

逆Ｖ字状の襞の連続からなるプリーツ状の濾材において、襞の高さを一様にせず、異なる高さの襞をおりまぜて配したことを特徴とする産業用の集塵機の濾過用カートリッジフィルターエレメントの濾材。 Filter cartridge filter for industrial dust collectors, characterized in that pleated filter media consisting of a series of inverted V-shaped ridges are arranged with ridges of different heights mixed together without making the ridge height uniform Element filter media.

逆Ｖ字状の襞の山部をＶ字状に折ることにより、異なる高さの襞を配する手段とした請求項１記載の産業用の集塵機の濾過用カートリッジフィルターエレメントの濾材。 The filter medium of the filter cartridge filter element for an industrial dust collector according to claim 1, wherein the reverse V-shaped ridges are folded into a V shape to arrange the ridges having different heights.

高さの高い逆Ｖ字状の高襞同士の間に高さの低い逆Ｖ字状の低襞を介在させることにより、異なる高さの襞を配する手段とした請求項１記載の産業用の集塵機の濾過用カートリッジフィルターエレメントの濾材。 2. The industrial use according to claim 1, wherein a high height inverted V-shaped high ridge is interposed between low height inverted V-shaped high ridges, thereby arranging different height ridges. Cartridge filter element filter medium for dust collectors.