JP3815433B2 - How to protect filter cloth for filter press - Google Patents

How to protect filter cloth for filter press Download PDF

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Publication number
JP3815433B2
JP3815433B2 JP2002372335A JP2002372335A JP3815433B2 JP 3815433 B2 JP3815433 B2 JP 3815433B2 JP 2002372335 A JP2002372335 A JP 2002372335A JP 2002372335 A JP2002372335 A JP 2002372335A JP 3815433 B2 JP3815433 B2 JP 3815433B2
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Japan
Prior art keywords
cloth
filter
filter cloth
liquid supply
press
Prior art date
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JP2002372335A
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Japanese (ja)
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JP2004202317A (en
Inventor
雅義 片山
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Ishigaki Co Ltd
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Ishigaki Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、単式ろ布走行型のフィルタープレスのろ布保護方法に関し、詳しくは、ろ布に装着する給液板の下端縁が当接する部位を補強する当布の目止めに関する。
【0002】
【従来の技術】
従来の単式フィルタープレスは一般的に原液の供給路をろ板のセンターに開設した、センターフィード方式のものが数多く使用されており、ろ布はろ板に固定して装着しているのが普通であった。従って、従来の単式フィルタープレスには、脱水ケーキが完全に剥離できないという問題、ろ布をろ板から取り外さなければろ布の洗浄が完全に行なえないという問題、ろ布の交換に時間がかかるといった問題があった。
【0003】
上記の問題を解決し、薄い脱水ケーキでも完全に剥離ができ、しかも、ろ布を取り外すことなく、ろ布の洗浄・再生が行なえる単式ろ布走行型のフィルタープレス用ろ布に関する発明が特許文献1に記載されている。そして、この単式ろ布走行型のフィルタープレス用ろ布において、一対のろ布の間に装着した給液板の下端縁が当接する部位に当布を縫い付けて、ろ布の補強をした考案が特許文献2に記載されている。
【0004】
【特許文献1】
特公昭55−38167号公報(特許請求の範囲、第4図)
【特許文献2】
実公昭54−27167号公報(実用新案登録請求の範囲、第3図)
【0005】
【発明が解決しょうとする課題】
しかしながら、上記特許文献1に記載されているろ布をダイアフラム圧搾機構付きの単式ろ布走行型のフィルタープレスに適用する場合、圧搾工程においてダイアフラム膨張時、ろ布は給液板の下端縁に沿って折り曲げられ強圧される。この折曲を繰返すことにより、ろ布は短期間に破損するという課題がある。特に、下水汚泥等のように有機物を多く含む汚泥の場合、圧入ろ過工程終了後の圧搾工程によって薄い脱水ケーキを生成するため、ダイアフラムの膨張率が大きくなり、ろ布の折曲角が大きくなって短期間に破損しやすくなるものである。
【0006】
そして、上記特許文献1の課題を解決するために、特許文献2に記載の改良が考案された。特許文献2に開示の考案は、特許文献1に開示の単式ろ布走行型のフィルタープレス用ろ布において、給液板の下端縁と当接する部位に当布をろ布に縫い付け、該折曲部の補強を行なうことにより、ろ布の短期間の破損を防止するようにしたものである。しかし、ろ布に当布を縫い付けることにより、縫い針による孔がろ布に明けられるため、この孔にろ過が集中して原液中の粒子の通過により、孔部の糸が磨耗による破断を起こしろ布の破損を誘発するという課題がある。この課題を解消するために、ろ布の当布全面に目止め用の樹脂を塗布して縫糸の孔を閉塞する方法が採用されたが、以下のような問題が発生した。1)当布全面に目止め樹脂を塗布することにより、ろ布本来の柔軟性に比べ当布部の柔軟性が阻害されるため、ろ布駆動時において、ろ布がスムーズに走行しない。2)当布全面に目止め樹脂を塗布することにより、ろ布本来の柔軟性に比べ当布部の柔軟性が阻害されるため、ダイアフラム膨張時に当布との境界部に局所的な折曲力がかかり、ろ布破損の原因となる。3)目止め樹脂を塗布した部分はろ過が出来ないため、当布の大きさだけろ過面積が減少する。
【0007】
【課題を解決するための手段】
本発明は上記の従来技術の課題を解決しようとするものであって、その要旨とするところは、水平に設けたガイドレール上に多数のろ板を開閉自在に並列し、これらろ板間に略中央部で二つ折りにした一対のろ布を設け、このろ布の間に給液板を介してスラリーを圧入脱水し、ろ布を上下に走行させてケーキ剥離を行なうフィルタープレスにおいて、前記ろ布の折り曲げ部に上部ろ布芯金挿入用の袋部を縫製し、該ろ布の両端縁部は下部ろ布芯金挿入用の袋部を夫々縫製するとともに、前記上部ろ布芯金挿入用の袋部の下方に原液の通孔を開口し、該通孔の下部で、前記給液板の下端縁に対接する位置の前記ろ布の内面に当布を縫い付け、該当布は前記給液板の下端縁を基準として、前記基準より上方に15〜20mm、下方に55〜60mmの位置に取付け、前記当布の大きさは横方向が前記給液板の横幅+15〜20mm、縦方向が15〜20mm(基準より上方の寸法)+55〜60mm(基準より下方の寸法)+15〜20mm=85〜100mmとし、前記当布を縫い付けた縫い目の部分のみに目止め剤を塗布することによって、前記従来技術の課題を解決するものであり、この目止め剤はウレタン樹脂系やシリコン樹脂系、その他合成ゴム系のものを使用する。
【0008】
そして、使用する当布はろ布厚みが1.5mm以下の場合にはろ布と同じものを使用し、1.5mm以上の場合には厚みが略1mmのものを使用する。又、当布の縫い目の部分の目止め加工は当布面側だけ、あるいは当布面側とろ布面側の両面を施工し、当布を縫い付ける縫糸はろ布と同材質のものを使用するようにしたものである。
【0009】
【発明の実施の形態】
以下、本発明の実施形態を図面に基づいて説明する。図1は本発明に係る方法を実施するための装置の概略図である。図中の符号1はフィルタープレスであり、フレーム15とフレーム16の間に一対のガイドレール2・2を水平に設けこのガイドレール2上に多数のろ板3…を並列させ、これらろ板3…の間に図4のろ布組品17を装着し、油圧シリンダー18を伸長させ、これらろ板3…をフレーム15方向に押圧して多数のろ室を形成した後、原液供給口19より原液を圧入してろ過脱水を行なう。脱水終了後、油圧シリンダー18を収縮して、ろ室を開板する。そして、駆動機20を作動させて、脱水ケーキを排出するようにしたものである。
【0010】
図2はろ布4を装着した状態を表しており、前記駆動機20とスプロケット21とが連動するように構成されており(図示せず)、スプロケット21にはチェーン22を掛け回している。チェーン22の一端は上部ろ布芯金6に連結し、他端は下部ろ布芯金8に連結している。上部ろ布芯金6は図4の袋部7に挿入しており、下部ろ布芯金8は袋部9に挿入しているので、チェーン22とろ布4とはエンドレス状に形成されている。スプロケット21を時計回りに回転させれば、ろ布4は下降を始め、図3の状態のようにろ布4に付着している脱水ケーキ23は、リターンロール24に沿ってろ布4が反転することにより、強制的にろ布から剥離させられる。ろ布4が所定の位置まで下降すると、駆動機20を逆転させ、ろ布4を上昇させるようにしている。符号25は洗浄パイプであって、ろ布4を昇降させることにより、ろ布4の洗浄を行なう。
【0011】
図3はダイアフラム26による圧搾状態を示す給液板5部分を拡大した断面図である。ろ板3…の閉板時では、原液供給口19は連通管を形成しており、圧入された原液は前記連通管から、給液板5に開口している分配口27より矢視Aに示すように、ろ室内に流入して圧入圧力によってろ過・脱水される。処理液はろ布4を通過して機外に排出され、固形物はろ布4によって捕集され脱水ケーキ23が形成される。そして、ダイアフラム26を水又は気体を用いて膨らませることにより、脱水ケーキ23は更に圧搾されて、水分が搾り出され薄くて低含水率のケーキとなる。この際、ダイアフラム26側に張設しているろ布4は図3に示すように、給液板5の下端縁に押付けられて折曲している。この状態を繰返すことにより、ろ布4は短期間で破損してしまうので、前記折曲される部分に当布11を縫付けろ布4の補強を行なっている。
【0012】
図4は当布11を縫付けたろ布組品17の図面であり、ろ布4は一枚の長方形のものを中央付近から二つ折りし、この折曲げ部から所定幅の位置を縫合して袋部7を形成し、該袋部7に上部ろ布芯金6を挿入している。ろ布4の両下端部も同様に袋部9・9を形成し、該袋部9・9にそれぞれ下部ろ布芯金8・8を挿入している。ろ布4上方の中央部には原液の通孔10を開口し、折曲げたろ布4の間に給液板5を差し込み、分配口27が下向きとなる方向で通孔10位置を合わし、止金5a…でろ布4に固着している。ダイアフラム26側のろ布4の内面で、給液板5の下端縁に対接する位置には当布11を縫付けている。
【0013】
【実施例】
図5は当布11の詳細図であって、縫糸14でろ布4に当布11を縫付けている。縫糸14はろ布4と同材質のものを使用し、当布11はろ布4の厚みが1.5mm以下の場合にはろ布4と同じ布を使用し、ろ布4の厚みが1.5mm以上の場合は厚みが略1mmのポリプロピレン製の布を使用するようにしている。ろ布4に当布11を縫付けた時にはミシン針によって縫い目12の孔が明き、原液ろ過・脱水時にはこの縫い目12の孔にろ過が集中し、多くの微細粒子が通過するため、縫い目12周部の繊維が短時間で破損してろ布4が使用不能となる。この縫い目12の孔へのろ過の集中を防ぐために、目止め剤を塗布することにより、縫い目12の孔を閉塞させる。しかし、目止め剤を当布11全面に塗布した場合には、段落番号0006で記載したようにろ布の柔軟性が阻害され、ろ布4の走行に支障があったり、ろ過面積が減少する等の問題がある。このため、目止め剤は図5に示すように縫い目12に沿って塗布するように目止め加工13を施行することにより、ろ布4の柔軟性が保たれ、ろ過面積の減少も最小限に抑えることができる。目止め加工13の幅は縫い目12及び縫糸14を被覆できる程度の施行可能な狭い幅でよい。目止め剤として、ウレタン樹脂やシリコン樹脂をベースとしたものを使用すれば乾燥後も柔軟性が保持される。目止め加工13は使用するろ布4の厚みや材質等により、当布11面側だけでもよく、あるいは、当布11面側とろ布4面側の両面を施行するようにしてもよい。図5のC寸法は給液板5の幅と略同寸法であり、B寸法はC寸法+15〜20mmである。矢視Xは給液板5の下端縁を示しており、E寸法は下端縁から上方に15〜20mmとし、F寸法は下端縁から下方へ55〜60mmとしている。D寸法はE+F+15〜20mmである。
【0014】
【発明の効果】
以上のように、本発明に係るろ布保護方法をダイアフラム圧搾機構付きの単式ろ布走行型のフィルタープレスに適用すれば、圧搾工程時におけるダイアフラムの膨張によって、ろ布は給液板の下端縁に沿って折り曲げられ強圧されることによるろ布の短期間での破損やミシン針によって明けられた縫い目へのろ過の集中による繊維の破損を防止し、また、当布の目止め加工面積も最小限としており、硬化しない目止め剤を使用するので、ろ布本来の柔軟性が阻害されることなく、ろ布走行時における支障も無く、ろ布の寿命が大幅に延長されるという顕著な効果が有る。
【図面の簡単な説明】
【図1】 本発明のフィルタープレスの一例の構造を示す概略図である。
【図2】 本発明のろ布を装着した状態を示す模式図である。
【図3】 本発明のろ布保護方法を示す縦断面図である。
【図4】 本発明のろ布組品を示す斜視図である。
【図5】 本発明のろ布保護方法を示す拡大図である。
【符号の説明】
1 フィルタープレス
2 ガイドレール
3 ろ板
4 ろ布
5 給液板
6 上部ろ布芯金
7 袋部
8 下部ろ布芯金
9 袋部
10 通孔
11 当布
12 縫い目
13 目止め加工
14 縫糸
E 15〜20mm
F 55〜60mm
X 基準
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for protecting a filter cloth of a single-type filter cloth traveling type filter press, and more particularly, to a seal for a cloth that reinforces a portion where a lower end edge of a liquid supply plate attached to the filter cloth contacts.
[0002]
[Prior art]
Conventional single-type filter presses are generally used with a center feed system that has a stock solution supply path opened at the center of the filter plate, and the filter cloth is usually fixed to the filter plate. there were. Therefore, the conventional single-type filter press has a problem that the dehydrated cake cannot be completely peeled off, a problem that the filter cloth cannot be completely washed unless the filter cloth is removed from the filter plate, and a problem that the filter cloth takes time to be replaced. was there.
[0003]
A patent for a filter cloth for a single-type filter cloth traveling type filter press that solves the above problems, can be completely peeled even with a thin dehydrated cake, and can be washed and regenerated without removing the filter cloth. It is described in Document 1. And in this single type filter cloth running type filter press filter cloth, the cloth cloth is sewed on the part where the lower edge of the liquid supply plate mounted between the pair of filter cloths comes into contact, and the filter cloth is reinforced. Is described in Patent Document 2.
[0004]
[Patent Document 1]
Japanese Patent Publication No. 55-38167 (Claims, Fig. 4)
[Patent Document 2]
Japanese Utility Model Publication No. 54-27167 (claim for utility model registration, Fig. 3)
[0005]
[Problems to be solved by the invention]
However, when the filter cloth described in Patent Document 1 is applied to a single-type filter cloth traveling type filter press with a diaphragm pressing mechanism, the filter cloth extends along the lower end edge of the liquid supply plate during diaphragm expansion in the pressing process. Is bent and pressed strongly. By repeating this bending, there is a problem that the filter cloth breaks in a short time. In particular, in the case of sludge containing a large amount of organic matter such as sewage sludge, a thin dehydrated cake is produced by the pressing process after the press-fitting filtration process, so the expansion rate of the diaphragm increases and the folding angle of the filter cloth increases. It is easy to break in a short time.
[0006]
And in order to solve the subject of the said patent document 1, the improvement as described in patent document 2 was devised. The device disclosed in Patent Document 2 is a single-type filter cloth running filter cloth disclosed in Patent Document 1, in which the cloth is sewn to the filter cloth at a portion that contacts the lower edge of the liquid supply plate. By reinforcing the curved portion, the filter cloth is prevented from being damaged in a short period of time. However, by sewing the filter cloth on the filter cloth, the hole by the sewing needle is opened in the filter cloth, so that filtration concentrates on this hole and the thread in the hole breaks due to wear due to the passage of particles in the stock solution. There is a problem of inducing breakage of the raising cloth. In order to solve this problem, a method was adopted in which a sealing resin was applied to the entire surface of the filter cloth to close the holes of the sewing thread. However, the following problems occurred. 1) By applying the sealing resin to the entire surface of the cloth, the flexibility of the cloth part is hindered compared to the original flexibility of the filter cloth, and therefore the filter cloth does not run smoothly when the filter cloth is driven. 2) By applying a sealing resin to the entire surface of the cloth, the flexibility of the cloth part is hindered compared to the original softness of the filter cloth. Therefore, when the diaphragm expands, it is locally bent at the boundary with the cloth. Force is applied, which may cause damage to the filter cloth. 3) Since the portion where the sealing resin is applied cannot be filtered, the filtration area is reduced by the size of the cloth.
[0007]
[Means for Solving the Problems]
The present invention is intended to solve the above-described problems of the prior art, and the gist of the present invention is that a large number of filter plates are juxtaposed in parallel on a guide rail provided horizontally, and between these filter plates. In a filter press that provides a pair of filter cloths that are folded in two at a substantially central portion, press-fit and dehydrate the slurry between the filter cloths via a liquid supply plate, and run the filter cloth up and down to peel the cake. The upper filter cloth cored bar is sewn on the folded part of the filter cloth, and both end edges of the filter cloth are sewn on the lower filter cloth metal core inserted bag parts, respectively. Open a through hole for the stock solution below the bag portion for insertion, and sew this cloth on the inner surface of the filter cloth at a position facing the lower edge of the liquid supply plate at the bottom of the through hole. 15~20mm relative to the lower edge of the liquid supply plate, above said reference, 55~60M downward Mounted in position, the person cloth magnitude width of transverse the liquid supply plate + 15 to 20 mm, (top dimension than the reference) longitudinally 15~20mm + 55~60mm (dimension lower than the reference) + 15 20 mm = 85 to 100 mm, and the problem of the prior art is solved by applying the sealant only to the seam portion where the cloth is sewn. This sealant is a urethane resin or silicone. Use resin or other synthetic rubber.
[0008]
When the thickness of the filter cloth is 1.5 mm or less, the same cloth as the filter cloth is used. When the thickness is 1.5 mm or more, the cloth having a thickness of about 1 mm is used. In addition, the seam part of the cloth is sealed only on the cloth surface side or on both the cloth surface side and the filter cloth surface side, and the sewing thread for sewing the cloth is made of the same material as the filter cloth. It is what I did.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view of an apparatus for carrying out the method according to the present invention. Reference numeral 1 in the figure denotes a filter press, and a pair of guide rails 2 and 2 are horizontally provided between the frame 15 and the frame 16, and a large number of filter plates 3 are juxtaposed on the guide rail 2. 4 is installed, the hydraulic cylinder 18 is extended, and the filter plates 3 are pressed in the direction of the frame 15 to form a large number of filter chambers. The stock solution is press-fitted and filtered. After dehydration, the hydraulic cylinder 18 is contracted to open the filter chamber. And the drive machine 20 is operated and the dehydrated cake is discharged.
[0010]
FIG. 2 shows a state in which the filter cloth 4 is mounted. The drive machine 20 and the sprocket 21 are configured to be interlocked (not shown), and a chain 22 is wound around the sprocket 21. One end of the chain 22 is connected to the upper filter cloth core 6 and the other end is connected to the lower filter cloth core 8. Since the upper filter cloth core 6 is inserted into the bag portion 7 of FIG. 4 and the lower filter cloth core metal 8 is inserted into the bag portion 9, the chain 22 and the filter cloth 4 are formed in an endless shape. . If the sprocket 21 is rotated clockwise, the filter cloth 4 starts to descend, and the dewatered cake 23 attached to the filter cloth 4 as shown in FIG. 3 is inverted along the return roll 24. Forcibly peels off the filter cloth. When the filter cloth 4 is lowered to a predetermined position, the drive machine 20 is reversed to raise the filter cloth 4. Reference numeral 25 denotes a cleaning pipe, and the filter cloth 4 is cleaned by moving the filter cloth 4 up and down.
[0011]
FIG. 3 is an enlarged cross-sectional view of the liquid supply plate 5 portion showing the compressed state by the diaphragm 26. When the filter plate 3 is closed, the stock solution supply port 19 forms a communication pipe, and the press-fitted stock solution is moved from the communication pipe to the arrow A through the distribution port 27 opened in the liquid supply plate 5. As shown, it flows into the filter chamber and is filtered and dehydrated by the press-fitting pressure. The treatment liquid passes through the filter cloth 4 and is discharged outside the apparatus, and the solid matter is collected by the filter cloth 4 to form a dehydrated cake 23. And when the diaphragm 26 is inflated with water or gas, the dewatered cake 23 is further squeezed, the water is squeezed out into a thin cake with a low moisture content. At this time, the filter cloth 4 stretched on the diaphragm 26 side is pressed against the lower edge of the liquid supply plate 5 and bent as shown in FIG. By repeating this state, the filter cloth 4 is damaged in a short period of time. Therefore, the filter cloth 4 is reinforced by sewing the cloth cloth 11 on the bent portion.
[0012]
FIG. 4 is a drawing of a filter cloth assembly 17 in which the cloth 11 is sewn. The filter cloth 4 is a rectangular piece folded in half from the center and stitched at a predetermined width from the bent portion. A bag part 7 is formed, and an upper filter cloth core 6 is inserted into the bag part 7. Similarly, both lower end portions of the filter cloth 4 form bag portions 9 and 9, and lower filter cloth cores 8 and 8 are inserted into the bag portions 9 and 9, respectively. Open the through hole 10 of the undiluted solution in the center above the filter cloth 4, insert the liquid supply plate 5 between the folded filter cloths 4, align the through hole 10 in the direction in which the distribution port 27 faces downward, and stop. It is fixed to the filter cloth 4 with gold 5a. The cloth 11 is sewed on the inner surface of the filter cloth 4 on the diaphragm 26 side at a position in contact with the lower end edge of the liquid supply plate 5.
[0013]
【Example】
FIG. 5 is a detailed view of the cloth 11, and the cloth 11 is sewn to the filter cloth 4 with the sewing thread 14. The sewing thread 14 is made of the same material as the filter cloth 4, and the cloth 11 is the same as the filter cloth 4 when the thickness of the filter cloth 4 is 1.5 mm or less, and the thickness of the filter cloth 4 is 1.5 mm or more. In this case, a polypropylene cloth having a thickness of about 1 mm is used. When the cloth 11 is sewed on the filter cloth 4, the holes of the seam 12 are opened by the sewing needle, and during the filtration and dehydration of the concentrate, the filtration concentrates on the holes of the seam 12, and many fine particles pass through. The peripheral fiber breaks in a short time and the filter cloth 4 becomes unusable. In order to prevent concentration of filtration into the hole of the seam 12, the hole of the seam 12 is closed by applying a sealing agent. However, when the sealing agent is applied to the entire surface of the cloth 11, the flexibility of the filter cloth is hindered as described in Paragraph 0006, the running of the filter cloth 4 is hindered, and the filtration area is reduced. There are problems such as. For this reason, as shown in FIG. 5, the sealing agent 13 is applied so as to be applied along the seam 12, so that the flexibility of the filter cloth 4 is maintained and the reduction of the filtration area is also minimized. Can be suppressed. The width of the seam processing 13 may be a narrow width that can be applied so that the seam 12 and the sewing thread 14 can be covered. If a material based on urethane resin or silicone resin is used as the sealing agent, flexibility is maintained even after drying. Depending on the thickness and material of the filter cloth 4 to be used, the sealing process 13 may be performed only on the surface of the cloth 11 or on both the surface of the cloth 11 and the surface of the filter cloth 4. The C dimension in FIG. 5 is substantially the same as the width of the liquid supply plate 5, and the B dimension is C dimension +15 to 20 mm. The arrow X shows the lower end edge of the liquid supply plate 5, the E dimension is 15-20 mm upward from the lower end edge, and the F dimension is 55-60 mm downward from the lower end edge. D dimension is E + F + 15-20 mm.
[0014]
【The invention's effect】
As described above, when the filter cloth protecting method according to the present invention is applied to a single filter cloth traveling type filter press with a diaphragm pressing mechanism, the filter cloth is expanded at the lower end edge of the liquid supply plate by the expansion of the diaphragm during the pressing process. The filter cloth is prevented from being damaged in a short period of time by being bent along with a strong pressure and fiber damage due to the concentration of filtration on the seams opened by the sewing needle, and the sealing area of the cloth is also minimized. Because it uses a sealant that does not harden, the original flexibility of the filter cloth is not hindered, there is no problem when running the filter cloth, and the service life of the filter cloth is significantly extended. There is.
[Brief description of the drawings]
FIG. 1 is a schematic view showing the structure of an example of a filter press of the present invention.
FIG. 2 is a schematic view showing a state in which the filter cloth of the present invention is mounted.
FIG. 3 is a longitudinal sectional view showing the filter cloth protecting method of the present invention.
FIG. 4 is a perspective view showing a filter cloth assembly of the present invention.
FIG. 5 is an enlarged view showing the filter cloth protecting method of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Filter press 2 Guide rail 3 Filter board 4 Filter cloth 5 Liquid supply board 6 Upper filter cloth core 7 Bag part 8 Lower filter cloth core 9 Bag part 10 Through-hole 11 Cloth 12 Seam 13 Sealing process 14 Sewing thread
E 15-20mm
F 55-60mm
X standard

Claims (5)

水平に設けたガイドレール(2)上に多数のろ板(3…)を開閉自在に並列し、これらろ板(3…)間に略中央部で二つ折りにした一対のろ布(4)を設け、このろ布(4)の間に給液板(5)を介してスラリーを圧入脱水し、ろ布(4)を上下に走行させてケーキ剥離を行なうフィルタープレス(1)において、前記ろ布(4)の折り曲げ部に上部ろ布芯金(6)挿入用の袋部(7)を縫製し、該ろ布(4)の両端縁部は下部ろ布芯金(8)挿入用の袋部(9)を夫々縫製するとともに、前記上部ろ布芯金(6)挿入用の袋部(7)の下方に原液の通孔(10)を開口し、該通孔(10)の下部で、前記給液板(5)の下端縁に対接する位置の前記ろ布(4)の内面に当布(11)を縫い付け、該当布(11)は前記給液板(5)の下端縁を基準(X)として、前記基準(X)より上方に15〜20mm(E)、下方に55〜60mm(F)の位置に取付け、前記当布(11)の大きさは横方向が前記給液板(5)の横幅+15〜20mm、縦方向が15〜20mm(E)+55〜60mm(F)+15〜20mm=85〜100mmとし、前記当布(11)を縫い付けた縫い目(12)の部分のみに目止め剤を塗布することを特徴とするフィルタープレス用ろ布の保護方法。A pair of filter cloths (4) in which a large number of filter plates (3...) Are arranged in a freely openable and closable manner on a horizontal guide rail (2), and are folded in two at a substantially central portion between these filter plates (3...). In the filter press (1) in which the slurry is press-fitted and dehydrated through the liquid supply plate (5) between the filter cloths (4) and the filter cloth (4) is moved up and down to peel the cake. The upper filter cloth core (6) insertion bag (7) is sewn into the bent part of the filter cloth (4), and both edge portions of the filter cloth (4) are for insertion of the lower filter cloth core (8). Each of the bag portions (9) is sewed, and a through hole (10) for the stock solution is opened below the bag portion (7) for inserting the upper filter cloth core (6). At the lower part, the cloth (11) is sewed on the inner surface of the filter cloth (4) at a position in contact with the lower end edge of the liquid supply plate (5), and the cloth (11) corresponds to the liquid supply plate (5). Bottom edge As a reference (X), 15 to 20 mm from the upper said reference (X) (E), attached to the position of 55~60Mm (F) downward, the equivalent fabric (11) the size of the horizontal direction the liquid supply The width of the plate (5) +15 to 20 mm, the vertical direction is 15 to 20 mm (E) +55 to 60 mm (F) +15 to 20 mm = 85 to 100 mm, and the portion of the seam (12) to which the cloth (11) is sewn A method for protecting a filter cloth for a filter press, characterized by applying a sealing agent only to the filter cloth. 上記目止め剤はウレタン樹脂系やシリコン樹脂系、その他合成ゴム系のものを使用することを特徴とする請求項1に記載のフィルタープレス用ろ布の保護方法。  2. The method for protecting a filter cloth for a filter press according to claim 1, wherein the sealing agent is a urethane resin, silicon resin, or other synthetic rubber. 上記当布(11)はろ布厚みが1.5mm以下の場合にはろ布(4)と同じものを使用し、1.5mm以上の場合には厚みが略1mmのものを使用することを特徴とする請求項1及び請求項2に記載のフィルタープレス用ろ布の保護方法。  When the thickness of the filter cloth (11) is 1.5 mm or less, the same cloth as the filter cloth (4) is used. When the thickness is 1.5 mm or more, the cloth (11) is approximately 1 mm thick. A method for protecting a filter cloth for a filter press according to claim 1 and 2. 上記縫い目(12)の部分の目止め加工(13)は当布(11)面側だけ、あるいは当布(11)面側とろ布(4)面側の両面を施工することを特徴とする請求項1〜請求項3に記載のフィルタープレス用ろ布の保護方法。  The seam processing (13) of the seam (12) is performed only on the cloth (11) surface side, or on both the cloth (11) surface side and the filter cloth (4) surface side. The protection method of the filter cloth for filter presses of Claims 1-3. 上記当布(11)を縫い付ける縫糸(14)はろ布(4)と同材質のものを使用することを特徴とする請求項1〜請求項4に記載のフィルタープレス用ろ布の保護方法。  The method for protecting a filter cloth for a filter press according to any one of claims 1 to 4, wherein the sewing thread (14) for sewing the cloth (11) is made of the same material as the filter cloth (4).
JP2002372335A 2002-12-24 2002-12-24 How to protect filter cloth for filter press Expired - Fee Related JP3815433B2 (en)

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JP5344350B2 (en) * 2010-06-29 2013-11-20 東邦チタニウム株式会社 Filter cloth for filter press and method for treating industrial waste using the same
JP6151837B1 (en) * 2016-10-31 2017-06-21 株式会社タカラ工芸社 Filter cloth, method for producing the same, and filter
CN110302569B (en) * 2019-08-01 2023-06-20 广东省金凯地过滤设备有限公司 Filter pressing plate for reinforcing fixation and sealing performance of filter cloth
CN111957082A (en) * 2020-09-15 2020-11-20 江苏天将生物科技有限公司 Vertical filter press

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