JP4125844B2

JP4125844B2 - Filter press filter plate

Info

Publication number: JP4125844B2
Application number: JP20288799A
Authority: JP
Inventors: 棟之宮野
Original assignee: 株式会社栗田機械製作所
Priority date: 1999-07-16
Filing date: 1999-07-16
Publication date: 2008-07-30
Anticipated expiration: 2019-07-16
Also published as: JP2001025613A

Description

【０００１】
【発明の属する技術分野】
本発明は、濾板間に配置される濾布を一枚ずつ簡単に取付けることができるフィルタプレスの濾板に関する。
【０００２】
【従来の技術】
フィルタプレスの濾板に濾布を取付けるため、従来は、例えば、実公昭４３−１４９５１号公報のように、２枚の濾布を中央部の孔部で縫い合わせて一対の濾布を形成し、濾板の貫通孔に上記濾布の一方を挿通して取付けたものがある。
【０００３】
又、実公昭４０−８３０１号公報のように濾板の貫通孔に濾布取付具をネジにて取付け、濾布と一体化した構造のものもある。
【０００４】
【発明が解決しようとする課題】
しかしながら、前者の場合、濾布の一方が損傷した場合であっても、一対の濾布をすべて取替える必要があり、また、取替える際に一方の濾布を円筒状に巻いて濾板の貫通孔から取出さねばらならいという煩雑さがあった。
【０００５】
また、後者の場合、濾布取付具を螺合させる道具を必要とし、煩雑であり、また、原液の圧力による濾板の強度補強のため突子（実公昭４０−８３０１号公報の突子３）を必要とするという問題があった。
【０００６】
本発明は、上記問題を解決することにあって、濾布取付具の取付けが容易であり、濾布の一方が損傷しても一対の濾布全てを取替える必要もなく、また、濾板補強のための突子も必要としないフィルタプレスの濾板を提供することにある。
【０００７】
【課題を解決するための手段】
上記目的を達成するために、本発明は以下のように構成する。
【０００８】
本発明の第１態様によれば、濾板の貫通孔に弾性変形しつつ嵌合係止され、上記濾板の貫通孔の両端部開口の周囲の凹部にそれぞれ密着嵌合する一対の鍔部と、各鍔部に備えられて隣接濾板間に配置される濾布をそれぞれ取付ける濾布取付部とを備える弾性変形可能な濾布取付具を備えたフィルタプレスの濾板であって、
上記濾布取付具はその中間部に嵌合用凸部を有して、該嵌合用凸部が上記濾板の上記貫通孔の嵌合用凹部に嵌合されることにより、上記濾布取付具が上記濾板の上記貫通孔に嵌合係止されるようにしたことを特徴とするフィルタプレスの濾板を提供する。
【００１１】
本発明の第２態様によれば、上記濾布取付具は２分割されかつ弾性材料より形成される分割体より構成され、各分割体は、上記濾板の上記貫通孔内で互いに密着接触する内側端部に嵌合用凸部を有して、該嵌合用凸部が上記濾板の上記貫通孔の嵌合用凹部に嵌合されることにより、上記濾布取付具が上記濾板の上記貫通孔に嵌合係止されるとともに、外側端部に上記鍔部を有するようにした第１態様に記載のフィルタプレスの濾板を提供する。
【００１２】
本発明の第３態様によれば、上記濾布取付具の上記嵌合用凸部を、上記嵌合用凹部の深さ寸法より大きな直径寸法を有する断面円形の円環状凸部より形成するようにした第１又は２態様に記載のフィルタプレスの濾板を提供する。
【００１３】
【発明の実施の形態】
以下に、本発明にかかる実施の形態を図１〜図６に基づいて詳細に説明する。
【００１４】
本発明の第１の実施形態にかかる濾板１は、図１〜図３に示すように、その中央に矩形の濾過床３を有し、外周の額縁２の両側部の上下端部を横方向にそれぞれ突出した耳部４，…，４を有して大略構成される。
【００１５】
各耳部４は貫通孔５を有し、各貫通孔５は通常濾液回収孔として機能するが、圧搾濾板を使用する場合には、４個の貫通孔５のうちの少なくとも１つの貫通孔５は圧搾濾板の圧搾膜を膨張するための圧搾空気の圧搾空気供給孔として使用する。
【００１６】
濾過床３の略中央の貫通孔６は原液供給孔として利用されるとともに、濾布取付けのためにも使用するため、以下のような構造より構成されている。
【００１７】
図４及び図５に示すように、貫通孔６の中央部には貫通孔６の軸方向と直交する方向にへこんだ円環状の凹部７を有するとともに、貫通孔６の両側の端部開口周囲には貫通孔６の軸方向と平行な方向（濾板１の厚み方向）にへこんだ円環状段凹部８を形成する。
【００１８】
図４〜図６に示すように、上記各貫通孔６には、ゴム又は合成樹脂のような弾性体より構成された濾布取付具１０が弾性変形しつつ嵌合可能となっている。各濾布取付具１０は２分割された一対の分割体１０ａ，１０ａより構成される。
【００１９】
図６に示すように、各分割体１０ａは軸方向に貫通した原液供給孔１３を有する大略円筒状より構成され、各分割体１０ａの一端部の外周には、濾板１の円環状の凹部７に嵌合する円環状の凸部１１を有し、他端部の外周には濾板１の円環状段凹部８に嵌合する円環状の鍔部１２を有している。各鍔部１２には、濾布２０を取付ける円環状の凹部よりなる濾布取付部１４をその内側近傍に切り込むように形成するとともに、外側表面には、原液が通過する原液供給孔１３より放射状に延びる多数の原液通路１５，…，１５を有している。
【００２０】
上記濾布取付具１０は、２個の分割体１０ａ，１０ａを、それぞれ、取り付けるべき濾板１の貫通孔６の前後より挿入し、弾性変形させつつ、上記濾板１の凹部７に各分割体１０ａの凸部１１を嵌合させて貫通孔６からの抜け止めを行うとともに、上記濾板１の環状段凹部８に各分割体１０ａの鍔部１２を嵌合させて、上記濾板１を構成する。
【００２１】
このとき、上記濾布取付具１０は、ゴム又は合成樹脂のような弾性体より形成しているので、上記嵌合状態で、２つの分割体１０ａ，１０ａは濾板１の貫通孔６内で互いの内側端部が弾性力で密着して原液が濾板１側に漏れにくいようになっているとともに、濾板１の凹部７と環状段部８に各分割体１０ａの凸部１１と鍔部１２とがそれぞれ密着嵌合して濾板１との間をシールするようになっている。
【００２２】
なお、濾布２０は、通常、上記濾布取付具１０を濾板１に取付ける前に、濾布取付具１０の各分割体１０ａの濾布取付部１４に取付ておくと、上記濾布取付具１０の濾板１への取付けが完了すると、濾布２０，２０が各濾板１の前後両面に取り付けられたことになり、濾布２０，２０の取付け作業が容易となる。
【００２３】
このようにして、上記濾布取付具１０により各濾板１の前後両面にそれぞれ濾布２０を取り付けるので隣接濾板１，１間に一対の濾布２０，２０を配置した状態で、周知のフィルタプレスの可動板により濾板を親板側に締め付けると、図２のような状態となり、濾布取付部１４も押し付けられ、濾布２０は濾布取付具１０の鍔部１２でシールされる。
【００２４】
この状態では、隣接する濾布取付具１０，１０が濾板締付力により互いに押圧接触され、接触部分がほぼ完全にシールされるようになる。
【００２５】
原液は、濾布取付具１０内の原液供給孔１３に向けて図２のように流れ、原液通路１５，…，１５を通って一対の濾布２０、２０間に形成された濾室２１内に導かれて、所定の濾過を行う。濾過終了後は、可動板が後退して隣接濾板１，１間からケークを排出して濾布洗浄などを行ったのち、次の濾過に備える。
【００２６】
上記実施形態によれば、濾板１の貫通孔６に弾性変形しつつ嵌合係止され、上記濾板１の貫通孔６の両端部開口の周囲の凹部８，８にそれぞれ密着嵌合する一対の鍔部１２，１２と、各鍔部１２に備えられて隣接濾板１，１間に配置される濾布２０，２０をそれぞれ取付ける濾布取付部１４，１４とを備える弾性変形可能な濾布取付具１０を備えるようにしている。従って、濾板１に取付けた一対の濾布２０，２０の一方が損傷した場合であっても、損傷した濾布２０のみを濾布取付具１０の濾布取付部１４から取り外して新しい濾布２０に取り替えるだけでよく、一対の濾布２０，２０をすべて取替る必要がなく、また、容易に濾布２０を取替ることができる。
【００２７】
また、上記濾布取付具１０は、弾性変形可能に構成すれば、特別な道具を必要とせず、濾板１に容易に弾性変形させつつ取付けることができる。また、上記濾布取付具１０は、弾性変形可能に構成すれば、濾板１とのシールも、その効果は大なるものとなる。
【００２８】
また、上記濾布取付具１０は、濾板締付時に、隣接する濾布取付具１０，１０同士が濾板締付力により押圧接触しているので、特に従来のように濾板強度補強のための突子を付けなくてもよい。
【００２９】
なお、本発明は上記実施形態に限定されるものではなく、その他種々の態様で実施できる。
【００３０】
例えば、図７は、濾布取付具１０の原液通路１５を、原液が通過する原液供給孔１３より放射状に延びるように形成するのではなく、上下及び左右に平行に設けたものであり、濾布取付具１０の加工が容易となる。
【００３１】
また、図８は濾布取付具１０の凸部１１を、円環状の凸部の代わりに、凹部７の深さ寸法より大きな直径寸法を有する断面円形の円環状凸部３１に形成したものであり、濾板１の凹部７とのシール効果をより向上させることができる。
【００３２】
また、図９に示されるように、濾布取付具を２分割するのではなく、１つの部材より構成した濾布取付具３０としてもよい。この場合、鍔部１２は全体的にその外径を小さくするほうが、濾板１への取付時に一方の鍔部１２を貫通孔６内に通過させるときに便利であるとともに、相乗効果として、濾布２０も濾布取付部１４に取付けしやすくなる。
【００３３】
【発明の効果】
本発明によれば、濾板の貫通孔に弾性変形しつつ嵌合係止され、上記濾板の貫通孔の両端部開口の周囲の凹部にそれぞれ密着嵌合する一対の鍔部と、各鍔部に備えられて隣接濾板間に配置される濾布をそれぞれ取付ける濾布取付部とを備える弾性変形可能な濾布取付具を備えるようにしている。従って、濾板に取付けた一対の濾布の一方が損傷した場合であっても、損傷した濾布のみを濾布取付具の濾布取付部から取り外して新しい濾布に取り替えるだけでよく、一対の濾布をすべて取替る必要がなく、また、容易に濾布を取替ることができる。
【００３４】
また、上記濾布取付具は、弾性変形可能に構成すれば、特別な道具を必要とせず、濾板に容易に弾性変形させつつ取付けることができる。また、上記濾布取付具は、弾性変形可能に構成すれば、濾板とのシールも、その効果は大なるものとなる。
【００３５】
また、上記濾布取付具は、濾板締付時に、隣接する濾布取付具同士が濾板締付力により押圧接触しているので、特に従来のように濾板強度補強のための突子を付けなくてもよい。
【００３６】
また、濾布取付具の凸部を、凹部の深さ寸法より大きな直径寸法を有する断面円形の円環状凸部に形成すれば、濾板の凹部とのシール効果をより向上させることができる。
【図面の簡単な説明】
【図１】本発明の一実施形態にかかるフィルタプレスの濾板の使用状態を示す正面図である。
【図２】本発明の上記実施形態にかかるフィルタプレスの濾板の締め付け状態を示す縦断面図である。
【図３】本発明の上記実施形態にかかるフィルタプレスの濾板において濾布が取り付けられていない状態での濾板を示す正面図である。
【図４】図３の濾板の縦断面図である。
【図５】図４の濾板の濾布取付具の位置を二点鎖線で示した状態での濾板の要部断面図である。
【図６】上記濾板に濾布取付具を取り付けた状態でかつ濾布を一点鎖線で示した状態での濾板を示す断面図である。
【図７】本発明の他の実施形態にかかるフィルタプレスの濾板を示す正面図である。
【図８】本発明のさらに他の実施形態にかかるフィルタプレスの濾板を示す断面図である。
【図９】本発明のさらに他の実施形態にかかるフィルタプレスの濾板に濾布取付具を取り付けた状態でかつ濾布を一点鎖線で示した状態での濾板を示す断面図である。
【符号の説明】
１…濾板、２…額縁、３…濾過床、４…耳部、５…貫通孔、６…貫通孔、７…凹部、８…環状段凹部、１０，３０…濾布取付具、１０ａ…分割体、１１，３１…凸部、１２…鍔部、１３…原液供給孔、１４…濾布取付部、１５…原液通路、２０…濾布、２１…濾室。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a filter plate of a filter press capable of easily attaching filter cloths arranged between filter plates one by one.
[0002]
[Prior art]
In order to attach the filter cloth to the filter plate of the filter press, conventionally, for example, as in Japanese Utility Model Publication No. 43-14951, two filter cloths are stitched together at the hole in the central portion to form a pair of filter cloths, There is one in which one of the filter cloths is inserted into the through hole of the filter plate.
[0003]
Also, there is a structure in which a filter cloth attachment is attached to a through hole of a filter plate with a screw and integrated with the filter cloth as disclosed in Japanese Utility Model Publication No. 40-8301.
[0004]
[Problems to be solved by the invention]
However, in the former case, even if one of the filter cloths is damaged, it is necessary to replace all of the pair of filter cloths. There was a complication that had to be taken out from.
[0005]
In the latter case, a tool for screwing the filter cloth attachment tool is required, which is complicated, and a protrusion (protrusion 3 of Japanese Utility Model Publication No. 40-8301) is provided for reinforcing the strength of the filter plate by the pressure of the stock solution. ) Was required.
[0006]
The present invention solves the above-mentioned problems, and it is easy to attach the filter cloth fixture. If one of the filter cloths is damaged, it is not necessary to replace all the pair of filter cloths. The object of the present invention is to provide a filter plate for a filter press that does not require a protrusion for the purpose.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is configured as follows.
[0008]
According to the first aspect of the present invention, the pair of flanges that are fitted and locked to the through holes of the filter plate while being elastically deformed, and are closely fitted to the recesses around the openings at both ends of the through hole of the filter plate. And a filter plate of a filter press provided with an elastically deformable filter cloth attachment provided with a filter cloth attachment part to which a filter cloth provided on each flange part and disposed between adjacent filter plates is attached ,
The filter cloth fixture has a fitting convex portion in the middle portion thereof, and the fitting convex portion is fitted into the fitting concave portion of the through hole of the filter plate. providing the filtration plate of a filter press, characterized in that the so that locked fit engagement in the through hole of the filter plate.
[0011]
According to the second aspect of the present invention, the filter cloth fixture is divided into two parts and is formed of an elastic material, and each of the divided parts comes into close contact with each other within the through hole of the filter plate. A fitting convex portion is provided on the inner end, and the fitting convex portion is fitted into the fitting concave portion of the through hole of the filter plate, whereby the filter cloth fixture is inserted into the filter plate. together they are locked fitting engagement in the hole to provide a filter plate of the filter press according to the first state like that to have the flange portion to the outer end.
[0012]
According to the third aspect of the present invention, the fitting convex part of the filter cloth fixture is formed from an annular convex part having a circular cross section having a diameter larger than the depth dimension of the fitting concave part. A filter plate for a filter press according to the first or second aspect is provided.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments according to the present invention will be described below in detail with reference to FIGS.
[0014]
As shown in FIGS. 1 to 3, the filter plate 1 according to the first embodiment of the present invention has a rectangular filter bed 3 at the center thereof, and the upper and lower ends of both sides of the outer peripheral frame 2 are horizontally disposed. It is generally configured with ears 4,..., 4 protruding in the direction.
[0015]
Each ear 4 has a through-hole 5, and each through-hole 5 normally functions as a filtrate collecting hole. However, when a squeezed filter plate is used, at least one of the four through-holes 5 is used. 5 is used as a compressed air supply hole for compressed air for expanding the compressed membrane of the compressed filter plate.
[0016]
The through-hole 6 at the approximate center of the filter bed 3 is used as a stock solution supply hole and is also used for attaching a filter cloth, and thus has the following structure.
[0017]
As shown in FIGS. 4 and 5, the through hole 6 has an annular recess 7 that is recessed in a direction orthogonal to the axial direction of the through hole 6, and the periphery of the end openings on both sides of the through hole 6. Is formed with an annular step recess 8 that is recessed in a direction parallel to the axial direction of the through-hole 6 (thickness direction of the filter plate 1).
[0018]
As shown in FIGS. 4 to 6, a filter cloth fixture 10 made of an elastic body such as rubber or synthetic resin can be fitted into each through hole 6 while being elastically deformed. Each filter cloth fixture 10 includes a pair of divided bodies 10a and 10a divided into two.
[0019]
As shown in FIG. 6, each divided body 10a is formed in a substantially cylindrical shape having a stock solution supply hole 13 penetrating in the axial direction, and an annular concave portion of the filter plate 1 is formed on the outer periphery of one end portion of each divided body 10a. 7 has an annular convex part 11 fitted to the outer peripheral part 7 and an annular flange part 12 fitted to the annular stepped concave part 8 of the filter plate 1 on the outer periphery of the other end part. Each flange portion 12 is formed with a filter cloth attachment portion 14 formed of an annular concave portion for attaching the filter cloth 20 so as to be cut in the vicinity of the inside thereof, and radially outward from the stock solution supply hole 13 through which the stock solution passes. Have a number of stock solution passages 15,.
[0020]
The filter cloth attachment 10 is divided into two recesses 7 of the filter plate 1 by inserting the two divided bodies 10a and 10a from the front and rear of the through-hole 6 of the filter plate 1 to be attached, and elastically deforming them. The projections 11 of the body 10a are fitted to prevent the through holes 6 from coming off, and the flanges 12 of the divided bodies 10a are fitted to the annular step recesses 8 of the filter plate 1 so that the filter plate 1 Configure.
[0021]
At this time, since the filter cloth fixture 10 is formed of an elastic body such as rubber or synthetic resin, the two divided bodies 10a and 10a are placed in the through holes 6 of the filter plate 1 in the fitted state. The inner ends of each other are brought into close contact with each other by an elastic force so that the stock solution is less likely to leak to the filter plate 1 side. The parts 12 are in close contact with each other to seal between the filter plate 1.
[0022]
The filter cloth 20 is usually attached to the filter cloth attachment portion 14 of each divided body 10a of the filter cloth attachment 10 before attaching the filter cloth attachment 10 to the filter plate 1. When the attachment of the tool 10 to the filter plate 1 is completed, the filter cloths 20 and 20 are attached to both front and rear surfaces of each filter plate 1, and the attachment work of the filter cloths 20 and 20 becomes easy.
[0023]
Thus, since the filter cloth 20 is attached to both front and rear surfaces of each filter plate 1 by the filter cloth mounting tool 10, a pair of filter cloths 20 and 20 are arranged between the adjacent filter plates 1 and 1, and are well known. When the filter plate is fastened to the parent plate side by the movable plate of the filter press, the state as shown in FIG. 2 is obtained, the filter cloth attaching portion 14 is also pressed, and the filter cloth 20 is sealed by the flange portion 12 of the filter cloth attaching device 10. .
[0024]
In this state, the adjacent filter cloth fixtures 10 and 10 are pressed and contacted with each other by the filter plate clamping force, and the contact portions are almost completely sealed.
[0025]
The stock solution flows as shown in FIG. 2 toward the stock solution supply hole 13 in the filter cloth fixture 10, and passes through the stock solution passages 15,..., 15 in the filter chamber 21 formed between the pair of filter fabrics 20 and 20. To perform predetermined filtration. After completion of the filtration, the movable plate is retracted, the cake is discharged from between the adjacent filter plates 1 and 1, and the filter cloth is washed. Then, it is prepared for the next filtration.
[0026]
According to the above embodiment, the filter plate 1 is fitted and locked to the through hole 6 of the filter plate 1 while being elastically deformed, and is closely fitted to the recesses 8 and 8 around the openings at both ends of the through hole 6 of the filter plate 1. A pair of flange parts 12, 12 and elastically deformable comprising filter cloth attachment parts 14, 14 for attaching filter cloths 20, 20 provided between the adjacent filter plates 1, 1 provided in each flange part 12, respectively. A filter cloth fixture 10 is provided. Therefore, even when one of the pair of filter cloths 20, 20 attached to the filter plate 1 is damaged, only the damaged filter cloth 20 is removed from the filter cloth attachment portion 14 of the filter cloth attachment 10 and a new filter cloth is obtained. It is only necessary to replace the filter cloth 20, and it is not necessary to replace all the pair of filter cloths 20 and 20, and the filter cloth 20 can be easily replaced.
[0027]
Moreover, if the said filter cloth attachment tool 10 is comprised so that elastic deformation is possible, a special tool will not be required but it can be attached to the filter plate 1, being elastically deformed easily. Moreover, if the said filter cloth attachment tool 10 is comprised so that elastic deformation is possible, the effect with the seal with the filter plate 1 will also become large.
[0028]
In addition, since the filter cloth fixtures 10 are in pressure contact with each other by the filter plate fastening force when the filter plates are fastened, the filter cloth strength fixtures 10 are particularly strengthened in the conventional manner. It is not necessary to attach a protrusion for the purpose.
[0029]
In addition, this invention is not limited to the said embodiment, It can implement with another various aspect.
[0030]
For example, in FIG. 7, the stock solution passage 15 of the filter cloth fixture 10 is not formed so as to extend radially from the stock solution supply hole 13 through which the stock solution passes, but is provided in parallel vertically and horizontally. Processing of the cloth fixture 10 is facilitated.
[0031]
Further, FIG. 8 shows that the convex portion 11 of the filter cloth fixture 10 is formed in an annular convex portion 31 having a circular section having a diameter larger than the depth dimension of the concave portion 7 instead of the annular convex portion. Yes, the sealing effect with the concave portion 7 of the filter plate 1 can be further improved.
[0032]
Moreover, as FIG. 9 shows, it is good also as the filter cloth attachment tool 30 comprised from one member instead of dividing a filter cloth attachment tool into two. In this case, it is more convenient to reduce the outer diameter of the flange 12 as a whole when passing the one flange 12 into the through hole 6 when the filter 12 is attached to the filter plate 1. The cloth 20 can be easily attached to the filter cloth attaching portion 14.
[0033]
【The invention's effect】
According to the present invention, a pair of flanges that are fitted and locked in the through holes of the filter plate while being elastically deformed, and are closely fitted in the recesses around the openings at both ends of the through holes of the filter plate, And an elastically deformable filter cloth attachment provided with a filter cloth attachment part attached to each of the filter cloths. Therefore, even when one of the pair of filter cloths attached to the filter plate is damaged, it is only necessary to remove the damaged filter cloth from the filter cloth attachment part of the filter cloth attachment and replace it with a new one. It is not necessary to replace all the filter cloths, and the filter cloth can be easily replaced.
[0034]
Moreover, if the said filter cloth attachment tool is comprised so that elastic deformation is possible, a special tool will not be required and it can attach to a filter plate, elastically deforming easily. Moreover, if the said filter cloth attachment tool is comprised so that elastic deformation is possible, the effect will also become large also with the seal with a filter plate.
[0035]
In addition, the filter cloth fixture is in contact with adjacent filter cloth fixtures by the filter plate clamping force when the filter plate is tightened. It is not necessary to add.
[0036]
Moreover, if the convex part of a filter cloth attachment tool is formed in the annular | circular shaped convex part with a circular cross section which has a larger diameter dimension than the depth dimension of a recessed part, the sealing effect with the recessed part of a filter plate can be improved more.
[Brief description of the drawings]
FIG. 1 is a front view showing a usage state of a filter plate of a filter press according to an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view showing a tightened state of a filter plate of a filter press according to the embodiment of the present invention.
FIG. 3 is a front view showing the filter plate in a state where the filter cloth is not attached to the filter plate of the filter press according to the embodiment of the present invention.
4 is a longitudinal sectional view of the filter plate of FIG. 3. FIG.
5 is a cross-sectional view of the main part of the filter plate in a state where the position of the filter cloth fixture of the filter plate of FIG. 4 is indicated by a two-dot chain line.
FIG. 6 is a cross-sectional view showing the filter plate in a state where the filter cloth fixture is attached to the filter plate and the filter cloth is indicated by a one-dot chain line.
FIG. 7 is a front view showing a filter plate of a filter press according to another embodiment of the present invention.
FIG. 8 is a cross-sectional view showing a filter plate of a filter press according to still another embodiment of the present invention.
FIG. 9 is a cross-sectional view showing a filter plate in a state in which a filter cloth attachment is attached to a filter plate of a filter press according to still another embodiment of the present invention and the filter cloth is indicated by a one-dot chain line.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Filter plate, 2 ... Picture frame, 3 ... Filtration bed, 4 ... Ear part, 5 ... Through-hole, 6 ... Through-hole, 7 ... Recessed part, 8 ... Annular step recessed part, 10, 30 ... Filter cloth fixture, 10a ... Divided bodies, 11, 31 ... convex part, 12 ... collar part, 13 ... stock solution supply hole, 14 ... filter cloth mounting part, 15 ... stock solution passage, 20 ... filter cloth, 21 ... filter chamber.

Claims

While elastically deformed in the through-hole of the filtration plate are sealed fitting engagement, and a pair of flange portions which respectively contact fitting concave portion of the periphery of both end openings of the through hole of the filter plate provided in the flange portion a filter plate for a filter press with an elastically deformable filter cloth fitting and a filter cloth mounting portion for mounting filtration cloth is arranged between adjacent filter plates, respectively,
The filter cloth fixture has a fitting convex portion in the middle portion thereof, and the fitting convex portion is fitted into the fitting concave portion of the through hole of the filter plate. filter plate of a filter press, characterized in that the so that locked fit engagement in the through hole of the filter plate.

The filter cloth fitting consists Ri by dividing body formed from two divided and resilient material, each of the divided body, the fitting convex portion on the inner end in intimate contact with each other in the through hole of the filtration plate has, by convexity fitting is fitted into the fitting concave portion of the through hole of the filtration plate, the filter cloth fitting is locked Hamagogakari in the through hole of the filtration plate In addition, the filter plate of the filter press according to claim 1 , wherein the flange portion is provided at an outer end portion.

The fitting protrusion of the filter cloth fitting, according to claim 1 or 2 so as to form Ri by an annular protrusion of the circular cross section having a larger diameter than the depth dimension of the fitting recess Filter press filter plate.