JP2011067797A - Diaphragm, filter plate and filter press dehydrator - Google Patents

Diaphragm, filter plate and filter press dehydrator Download PDF

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JP2011067797A
JP2011067797A JP2009223270A JP2009223270A JP2011067797A JP 2011067797 A JP2011067797 A JP 2011067797A JP 2009223270 A JP2009223270 A JP 2009223270A JP 2009223270 A JP2009223270 A JP 2009223270A JP 2011067797 A JP2011067797 A JP 2011067797A
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diaphragm
filter
filter plate
stock solution
thick
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JP5410219B2 (en
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Futoshi Mizutani
太 水谷
Hiroyasu Sugimura
裕康 杉村
Hiroshi Tsujino
博 辻野
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Kubota Corp
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Kubota Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a diaphragm which is almost free from the possibilities of breakage, a filter plate which can be easily fabricated and a filter press dehydrator with a filtration chamber formed of the diaphragm and the filter plate. <P>SOLUTION: The filter press dehydrator is of the following structure: The diaphragm 20 has a thick-walled part 21 which functions as a filter frame and is molded in one piece with the circumference of a thin-walled part 22 for pressing a stock solution. In addition, on one side surface of the filter press dehydrator, a compression part 31 for compressing the diaphragm 20 is formed between the side surface and an adjacent filter plate and on the other side surface, the filtration chamber 8 which can allow insertion of the diaphragm 20, is formed of the filter plate including a rising part 37 formed with a smaller thickness than the thick-walled part 21. Further, a cake can be obtained by pressing/dehydrating the stock solution through the process to expand the diaphragm 20 by supplying the stock solution to the filtration chamber 8. In this case, the thick-walled part 21 of the diaphragm 20 functions as a sealing surface. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、ろ枠とろ板で区画されるろ室に原液を供給して圧搾するフィルタプレス脱水機に組み込まれるダイヤフラムに関する。   The present invention relates to a diaphragm incorporated in a filter press dehydrator that supplies and concentrates a stock solution into a filter chamber partitioned by a filter frame and a filter plate.

従来、カーボン製造、チタン製造等の製品製造工程や、汚泥処理工程における固液分離用脱水機としてフィルタプレス脱水機が広く用いられている。   Conventionally, filter press dehydrators have been widely used as solid-liquid separation dehydrators in product manufacturing processes such as carbon production and titanium production, and sludge treatment processes.

フィルタプレス脱水機は、並列したろ板とダイヤフラム間にろ室を形成し、ろ板と、ダイヤフラムの前面に吊設したろ布で固液分離を行い、ろ室に生成した脱水ケーキをダイヤフラムで圧搾するように構成されている。   A filter press dehydrator forms a filter chamber between parallel filter plates and diaphragms, performs solid-liquid separation with the filter plate and a filter cloth suspended from the front of the diaphragm, and the dehydrated cake generated in the filter chamber is separated by the diaphragm. It is configured to squeeze.

このようなフィルタプレス脱水機に用いられるろ板及びダイヤフラムとして、特許文献1には、図12(a)に示すように、平坦な凹面状の脱水ケーキの支持床61と周縁部62が一体成形されたダイヤフラム60と、凹面状の支持面71と、支持面71の裏面にろ過床75が形成され、支持面71にダイヤフラム60を張設するようにしたろ板70が提案されている。   As a filter plate and diaphragm used in such a filter press dehydrator, in Patent Document 1, as shown in FIG. 12 (a), a support floor 61 and a peripheral edge 62 of a flat concave dewatered cake are integrally formed. A filter plate 70 is proposed in which the diaphragm 60, the concave support surface 71, and the filter bed 75 are formed on the back surface of the support surface 71, and the diaphragm 60 is stretched on the support surface 71 are proposed.

ダイヤフラム60を張設するろ板70の縁部には、凹溝73とその外側に内部を拡開した蟻溝74をそれぞれ無端状に形成してある。ダイヤフラム60の縁部には、ろ板70の凹溝73に挿入するシール用の突条63と、その外側にろ板70の蟻溝74に挿着する先端部を拡大して切欠斜面を有する係止用の係合突部64をそれぞれ無端状に形成してある。   On the edge of the filter plate 70 on which the diaphragm 60 is stretched, a concave groove 73 and a dovetail groove 74 having its inside expanded are formed endlessly. At the edge of the diaphragm 60, a sealing protrusion 63 to be inserted into the concave groove 73 of the filter plate 70, and a front end portion to be inserted into the dovetail groove 74 of the filter plate 70 are expanded to have a notched slope. The engaging protrusions 64 for locking are formed in an endless shape.

図12(b)に示すように、ダイヤフラム60とろ板70を並列させ、ダイヤフラム60とろ板70の間に図示しないろ布を配置して、ダイヤフラム60の突条63と係合突部64をろ板70の凹溝73と蟻溝74にそれぞれ当押し込み、ろ板70にダイヤフラム60を挿着してろ室を形成し、原液供給部材80からろ室に圧搾対象物を供給した後、ダイヤフラム60とろ板70の支持床71の間に加圧水を圧入してダイヤフラム60の支持床61をろ過床75側へ膨らませることで、圧搾対象物を圧搾脱水する。   As shown in FIG. 12B, the diaphragm 60 and the filter plate 70 are juxtaposed, and a filter cloth (not shown) is disposed between the diaphragm 60 and the filter plate 70 so that the protrusions 63 and the engaging protrusions 64 of the diaphragm 60 are filtered. After pressing into the concave groove 73 and the dovetail groove 74 of the plate 70, the diaphragm 60 is inserted into the filter plate 70 to form a filter chamber, and after the compressed material is supplied from the stock solution supply member 80 to the filter chamber, the diaphragm 60 is filtered. Pressurized water is injected between the support floors 71 of the plate 70 to inflate the support floor 61 of the diaphragm 60 toward the filtration bed 75, thereby compressing and dewatering the object to be compressed.

特開2005−144393号公報JP 2005-144393 A

しかし、上述ようなダイヤフラム60では、圧搾工程でダイヤフラム60の膨張・収縮を繰り返すたびに可動部65に繰り返し応力が生じる。この可動部65はろ板70と接触しているため大きな応力が集中したり、圧搾脱水操作のたびに摩耗が生じるので、耐久性が悪化し、破損しやすいという問題があった。   However, in the diaphragm 60 as described above, a stress is repeatedly generated in the movable portion 65 every time the diaphragm 60 is repeatedly expanded and contracted in the pressing process. Since the movable portion 65 is in contact with the filter plate 70, a large stress is concentrated, and wear occurs every time the squeezing and dehydrating operation is performed, so that there is a problem that durability is deteriorated and easily damaged.

また、ダイヤフラム60の突条63,係合突部64と係合するような凹溝73,蟻溝74や、ダイヤフラム60の支持床61と沿うような支持面71を形成するろ板70の加工が煩雑であった。   Further, the processing of the filter plate 70 that forms the concave groove 73 and the dovetail groove 74 that engage with the protrusion 63 and the engagement protrusion 64 of the diaphragm 60 and the support surface 71 that extends along the support floor 61 of the diaphragm 60. Was cumbersome.

そこで、煩雑なろ板の加工を減らすために、図12(c)に示すように、平らなろ板66でダイヤフラム67を挟持することも考えられるが、ろ板66が平らなので、ろ板66とダイヤフラム67の間にろ室を形成する、つまり、ろ板66とダイヤフラム67の間に空間を形成するために、別に製作したろ枠68が必要であり、さらに、ろ枠68とろ板66の接触面を確実にシールするためには、シール部材69を備える必要があった。すると、構成品数が増加し、製作工程が増加するという問題があった。   Therefore, in order to reduce complicated processing of the filter plate, as shown in FIG. 12C, it is conceivable to sandwich the diaphragm 67 with the flat filter plate 66. However, since the filter plate 66 is flat, the filter plate 66 and the diaphragm are arranged. In order to form a filter chamber between the filter plates 67, that is, to form a space between the filter plate 66 and the diaphragm 67, a separately prepared filter frame 68 is required. Further, the contact surface between the filter frame 68 and the filter plate 66 is required. In order to seal securely, it was necessary to provide the seal member 69. Then, there was a problem that the number of components increased and the manufacturing process increased.

本発明は、破損の虞が低減されたダイヤフラムと、加工が容易なろ板と、前記ダイヤフラムと前記ろ板とでろ室が形成されたフィルタプレス脱水機を提供することを目的とする。   An object of the present invention is to provide a diaphragm in which the possibility of breakage is reduced, a filter plate that can be easily processed, and a filter press dehydrator in which a filter chamber is formed by the diaphragm and the filter plate.

上述の目的を達成するため、本発明によるダイヤフラムの特徴構成は、特許請求の範囲の書類の請求項1に記載した通り、ろ枠とろ板で区画されるろ室に原液を供給して圧搾するフィルタプレス脱水機に組み込まれるダイヤフラムであって、ろ枠として機能する厚肉部が、原液を圧搾する薄肉部の周囲に一体に成形され、ろ板で圧縮されることによりシール面が形成される点にある。   In order to achieve the above-mentioned object, the characteristic configuration of the diaphragm according to the present invention is that, as described in claim 1 of the claims, the raw solution is supplied to the filter chamber partitioned by the filter frame and the filter plate and compressed. A diaphragm incorporated in a filter press dehydrator, a thick part that functions as a filter frame is integrally formed around a thin part that squeezes the stock solution, and is compressed by a filter plate to form a sealing surface In the point.

上述の構成によれば、ろ枠として機能する厚肉部と、原液を圧搾する薄肉部を一体成型することで、ろ室を構成するために別に製作したろ枠を用いる必要がなくなり、厚肉部がろ板で圧縮されることによりシール面が形成されることで、シール部材が不要となり、部品点数が低減できる。   According to the above-described configuration, it is not necessary to use a separately manufactured filter frame to form a filter chamber by integrally forming a thick part that functions as a filter frame and a thin part that squeezes the stock solution. By forming the sealing surface by compressing the portion with the filter plate, the sealing member becomes unnecessary and the number of parts can be reduced.

同第二の特徴構成は、同請求項2に記載した通り、上述の第一特徴構成に加えて、前記薄肉部が平板状に形成され、前記薄肉部の縁部が前記厚肉部の内周の厚み方向一端部に連接されている点にある。   In the second feature configuration, as described in claim 2, in addition to the first feature configuration described above, the thin portion is formed in a flat plate shape, and an edge portion of the thin portion is an inner portion of the thick portion. It exists in the point connected with the circumferential direction one end part.

上述の構成によれば、例えば、縁部がろ枠として機能する厚肉部の端面と連なる薄肉部の一面と、前記一面に対向するろ板との間にろ室を形成した場合、薄肉部に働く弾性力をろ室に圧入された原液を圧搾する力として利用できるので、原液を十分に圧搾することができる。さらに、ろ室側の薄肉部の縁部付近に、ろ布の目を抜けた脱水ケーキが付着することを防止できる。   According to the above-described configuration, for example, when a filter chamber is formed between one surface of the thin wall portion that is continuous with the end surface of the thick wall portion whose edge functions as a filter frame, and the filter plate facing the one surface, the thin wall portion Since the elastic force acting on can be used as the force for squeezing the stock solution pressed into the filter chamber, the stock solution can be sufficiently squeezed. Furthermore, it is possible to prevent the dehydrated cake having passed through the filter cloth from adhering to the vicinity of the edge of the thin portion on the filter chamber side.

なお、上述とは逆に、縁部がろ枠として機能する厚肉部の端面と連なる薄肉部の一面の裏面と、前記裏面に対向するろ板との間にろ室を形成してもよい。   Contrary to the above, a filter chamber may be formed between the back surface of one surface of the thin portion that is continuous with the end surface of the thick portion whose edge portion functions as a filter frame and the filter plate facing the back surface. .

同第三の特徴構成は、同請求項3に記載した通り、上述の第二特徴構成に加えて、前記厚肉部の内周面と、前記内周面に連なる前記薄肉部の一面と、前記一面に対向するろ板との間にろ室が形成されるように構成されている点にある。   In addition to the above-described second feature configuration, the third feature configuration is the inner peripheral surface of the thick portion, and one surface of the thin portion connected to the inner peripheral surface, as described in claim 3. The filter chamber is formed between the filter plate facing the one surface.

上述の構成によれば、前記厚肉部の内周面と、前記内周面に連なる前記薄肉部の一面と、前記一面に対向するろ板との間にろ室が形成されているので、前記内周面に連なる前記平板状に形成された薄肉部の一面全体をろ室として有効に利用することができるので、圧入する原液の量を増加させることができる。   According to the above-described configuration, a filter chamber is formed between the inner peripheral surface of the thick wall portion, one surface of the thin wall portion connected to the inner peripheral surface, and the filter plate facing the one surface. Since the entire surface of the thin portion formed in the flat plate shape connected to the inner peripheral surface can be effectively used as a filter chamber, the amount of the stock solution to be press-fitted can be increased.

さらに、原液の圧搾に利用した加圧水を排出する際には、薄肉部に働く弾性力を加圧水を排出する力として利用することができ、平板状に形成された薄肉部が元の位置に戻ることにより、加圧水が完全に排出されるので、開板、脱水ケーキ排出工程でろ過ユニットを開いた際に、加圧水がこぼれ落ち、周囲を汚す虞を低減することができる。   Furthermore, when discharging the pressurized water used to squeeze the stock solution, the elastic force acting on the thin-walled portion can be used as the force for discharging the pressurized water, and the thin-walled portion formed in the flat plate shape returns to the original position. Thus, since the pressurized water is completely discharged, when the filtration unit is opened in the opening plate and dewatered cake discharging step, it is possible to reduce the possibility that the pressurized water spills and stains the surroundings.

同第四の特徴構成は、同請求項4に記載した通り、上述の第一特徴構成に加えて、前記薄肉部が平板状に形成され、前記薄肉部の縁部が前記厚肉部の内周の厚み方向両端部から離隔した位置に連接されている点にある。   In the fourth feature configuration, as described in claim 4, in addition to the first feature configuration described above, the thin portion is formed in a flat plate shape, and an edge portion of the thin portion is an inner portion of the thick portion. It exists in the point connected with the position spaced apart from the thickness direction both ends of the circumference.

ダイヤフラムが膨張・収縮する際に、ダイヤフラムの縁部には繰り返し応力が集中する。上述の構成によれば、当該縁部が厚肉部の内周の厚み方向端部から離隔した位置に連接されているので、ろ板に接することがなくなるので、摩耗の虞がなくなり破損の虞を低減できる。   When the diaphragm expands and contracts, stress repeatedly concentrates on the edge of the diaphragm. According to the above-described configuration, since the edge portion is connected to a position separated from the end portion in the thickness direction of the inner periphery of the thick wall portion, the edge portion is not in contact with the filter plate. Can be reduced.

同第五の特徴構成は、同請求項5に記載した通り、上述の第一、第二または第四の何れかの特徴構成に加えて、前記薄肉部の縁部が、ろ枠として機能する厚肉部の厚み方向一端部側に連接され、前記薄肉部の中央部が、前記厚肉部の厚み方向他端部側に張り出した平坦面に形成され、前記平坦面と前記縁部とが傾斜面で連接されている点にある。   In the fifth feature configuration, as described in claim 5, in addition to any of the first, second, or fourth feature configurations described above, the edge of the thin portion functions as a filter frame. The thick portion is connected to one end side in the thickness direction, the central portion of the thin portion is formed on a flat surface protruding to the other end side in the thickness direction of the thick portion, and the flat surface and the edge portion It is in the point connected by the inclined surface.

上述の構成によれば、ろ室の容積を比較的大きくとりつつも、ろ室を形成する側の薄肉部の縁部付近に、ろ布の目を抜けた脱水ケーキが付着することを防止できる。   According to the above-described configuration, it is possible to prevent the dewatered cake passing through the filter cloth from adhering to the vicinity of the edge of the thin portion on the side forming the filter chamber, while taking a relatively large volume of the filter chamber. .

さらに、原液の圧搾に利用した加圧水を排出する際には、薄肉部に働く弾性力を加圧水を排出する力として利用することができ、薄肉部が元の位置に戻ることにより、加圧水を排出しやすいので、開板、脱水ケーキ排出工程でろ過ユニットを開いた際に、加圧水がこぼれ落ち、周囲を汚す虞を低減することができる。   Furthermore, when discharging the pressurized water used to squeeze the stock solution, the elastic force acting on the thin portion can be used as the force for discharging the pressurized water, and the compressed water is discharged by returning the thin portion to its original position. Since it is easy, when the filtration unit is opened in the opening plate and dehydrated cake discharging step, the possibility of spilling pressurized water and soiling the surroundings can be reduced.

本発明によるろ板の第一特徴構成は、同請求項6に記載した通り、上述の第一から第五の何れかの特徴構成を備えたダイヤフラムで原液を圧搾するフィルタプレス脱水機に組み込まれるろ板であって、他のろ板との間で前記ダイヤフラムを圧縮する圧縮部と、ダイヤフラムの圧縮を所定圧とするための立上り部が形成されている点にある。   The first characteristic configuration of the filter plate according to the present invention is incorporated into a filter press dewatering machine that squeezes the stock solution with the diaphragm having any one of the first to fifth characteristic configurations described above. It is a filter board, Comprising: It exists in the point which the compression part which compresses the said diaphragm between other filter boards, and the rising part for making compression of a diaphragm into a predetermined pressure are formed.

上述の構成によれば、ダイヤフラムの圧縮を所定圧とする立上り部により、ダイヤフラムの厚肉部が圧縮される圧力を所定圧に維持できるので、シール面のシール効果を安定させることができ、厚肉部の締め付けすぎによる破損の虞も回避できる。   According to the above-described configuration, the pressure at which the thick wall portion of the diaphragm is compressed can be maintained at the predetermined pressure by the rising portion where the compression of the diaphragm is a predetermined pressure. The possibility of damage due to excessive tightening of the meat part can also be avoided.

同第二の特徴構成は、請求項7に記載した通り、上述の第一特徴構成に加えて、前記立上り部の厚さは、ダイヤフラムの厚肉部の厚さより小さく設定されている点にある。   As described in claim 7, the second characteristic configuration is that, in addition to the first characteristic configuration described above, the thickness of the rising portion is set smaller than the thickness of the thick portion of the diaphragm. .

上述の構成によれば、立上り部の厚さと厚肉部の厚さの差がダイヤフラムの圧縮代となる。ダイヤフラムが前記圧縮代以上に圧縮されることがなくなるので、シール面のシール効果を安定させることができ、厚肉部の締め付けすぎによる破損の虞も回避できる。   According to the above-described configuration, the difference between the thickness of the rising portion and the thickness of the thick portion becomes the compression allowance of the diaphragm. Since the diaphragm is not compressed more than the compression allowance, the sealing effect of the sealing surface can be stabilized, and the possibility of damage due to excessive tightening of the thick portion can be avoided.

本発明によるフィルタプレス脱水機の特徴構成は、同請求項8に記載した通り、上述の第一から第五の何れかの特徴構成を備えたダイヤフラムと、上述の第一または第二特徴構成を備えたろ板を備えた点にある。   The characteristic configuration of the filter press dehydrator according to the present invention includes the diaphragm having any one of the first to fifth characteristic configurations described above and the first or second characteristic configuration described above. It is in the point provided with the provided filter plate.

上述の構成によれば、隣接するろ板の間にダイヤフラムが所定圧で保持された状態で圧搾を行うことができるので、安定したシール効果を得つつ、ダイヤフラムの締め付けすぎによる破損の虞が回避できる状態での脱水ができる。   According to the above-described configuration, the diaphragm can be squeezed between the adjacent filter plates at a predetermined pressure, so that a stable sealing effect can be obtained and the risk of damage due to overtightening of the diaphragm can be avoided. Can be dehydrated.

以上説明した通り、本発明によれば、破損の虞が低減されたダイヤフラムと、加工が容易なろ板と、前記ダイヤフラムと前記ろ板とでろ室が形成されたフィルタプレス脱水機を提供することができるようになった。   As described above, according to the present invention, it is possible to provide a diaphragm with a reduced risk of breakage, a filter plate that can be easily processed, and a filter press dehydrator in which a filter chamber is formed by the diaphragm and the filter plate. I can do it now.

本発明によるフィルタプレス脱水機の概略図Schematic of filter press dehydrator according to the present invention ダイヤフラムの説明図であって、(a)は正面図のA−A線断面図、(b)は正面図It is explanatory drawing of a diaphragm, Comprising: (a) is the sectional view on the AA line of a front view, (b) is a front view (a)はダイヤフラムの縁部の詳細図、(b)はダイヤフラムの厚さと立上が部の厚さの説明図(A) is a detailed view of the edge of the diaphragm, (b) is an explanatory diagram of the thickness of the diaphragm and the thickness of the rising portion (a)はろ板の正面図、(b)はろ板の側面図(A) Front view of filter plate, (b) Side view of filter plate (a)は原液供給部材の正面図、(b)は原液供給部材の側面図(A) is a front view of a stock solution supply member, (b) is a side view of a stock solution supply member (a)がろ板の平面図、(b)はろ板の裏面図(A) Plan view of filter plate, (b) Back view of filter plate ダイヤフラムをろ板に嵌入した状態の説明図であって、(a)は側断面図、(b)は平面図、(c)は裏面図It is explanatory drawing of the state which inserted the diaphragm in the filter board, (a) is sectional side view, (b) is a top view, (c) is a back view. ろ過ユニットの説明図であって、(a)はろ過ユニットが開いた状態を表す概略図、(b)はろ過ユニットが閉じた状態を表す概略図It is explanatory drawing of a filtration unit, (a) is the schematic showing the state which the filtration unit opened, (b) is the schematic showing the state where the filtration unit was closed (a)は閉板工程の説明図、(b)はろ過工程の説明図、(c)は圧搾工程の説明図、(d)は開板・脱水ケーキ排出工程の説明図(A) is an explanatory view of a closing plate process, (b) is an explanatory view of a filtration step, (c) is an explanatory view of a pressing step, and (d) is an explanatory view of an open plate / dehydrated cake discharging step. (a)は本実施形態によるろ過ユニットの概略図、(b)は別実施形態によるろ過ユニットの概略図、(c)は別実施形態によるダイヤフラムの説明図(A) is the schematic of the filtration unit by this embodiment, (b) is the schematic of the filtration unit by another embodiment, (c) is explanatory drawing of the diaphragm by another embodiment (a)は、別実施形態によるダイヤフラムの説明図、(b)は、別実施形態によるダイヤフラムを備えたろ過ユニットの説明図、(c)は、別実施形態によるダイヤフラムを備えたろ過ユニットの説明図(A) is explanatory drawing of the diaphragm by another embodiment, (b) is explanatory drawing of the filtration unit provided with the diaphragm by another embodiment, (c) is description of the filtration unit provided with the diaphragm by another embodiment. Figure 従来のフィルタプレス脱水機に用いられるダイヤフラムとろ板の概略図であって、(a)はダイヤフラムとろ板の係合部分の概略図、(b)はダイヤフラムとろ板を係合した状態の概略図、(c)はろ板が平らである場合の説明図It is a schematic diagram of a diaphragm and a filter plate used in a conventional filter press dehydrator, (a) is a schematic diagram of the engagement portion of the diaphragm and filter plate, (b) is a schematic diagram of a state in which the diaphragm and the filter plate are engaged, (C) Explanatory drawing when the filter plate is flat

以下に本発明によるダイヤフラム、ろ板及びフィルタプレス脱水機を説明する。   The diaphragm, filter plate and filter press dehydrator according to the present invention will be described below.

図1に示すように、フィルタプレス脱水機100には、左フレーム1、右フレーム2間に一対のガイドレール3が横架してあり、一対のガイドレール3に複数のろ過ユニット4が左フレーム1と右フレーム2方向に摺動可能に載架されている。右フレーム2には押圧シリンダ6が設けられ、押圧シリンダ6のロッド6aの先端には押圧部材5が備えられている。   As shown in FIG. 1, in the filter press dehydrator 100, a pair of guide rails 3 are horizontally mounted between the left frame 1 and the right frame 2, and a plurality of filtration units 4 are mounted on the left frame. 1 and the right frame 2 are slidably mounted. The right frame 2 is provided with a pressing cylinder 6, and a pressing member 5 is provided at the tip of the rod 6 a of the pressing cylinder 6.

複数のろ過ユニット4はそれぞれ隣接するろ過ユニット4とリンク部材(図示せず)で連結され、図1中右端のろ過ユニット4はろ過ユニット駆動装置と連結され、左端のろ過ユニット4は左フレーム1側と連結されている。右端のろ過ユニット4が右方向に移動すると、それにつられて順次ろ過ユニット4が右方向に移動し、リンク部材によってそれぞれのろ過ユニット4が所定間隔で離間するように構成されている。   The plurality of filtration units 4 are connected to adjacent filtration units 4 by link members (not shown), the rightmost filtration unit 4 in FIG. 1 is connected to a filtration unit driving device, and the leftmost filtration unit 4 is a left frame 1. It is connected with the side. When the right end filtration unit 4 moves in the right direction, the filtration unit 4 sequentially moves in the right direction, and the filtration units 4 are separated by a link member at a predetermined interval.

なお、ろ過ユニット4の移動は上述の構成によるものに限らず、左フレーム1と右フレーム2に備えたスプロケット(図示せず)間に配設したチェーン(図示せず)にろ過ユニット4を懸架して、スプロケットを駆動しチェーンを移動させることで、当該チェーンに懸架されたろ過ユニット4を移動させる構成であってもよい。   The movement of the filtration unit 4 is not limited to the above-described configuration, and the filtration unit 4 is suspended on a chain (not shown) disposed between sprockets (not shown) provided in the left frame 1 and the right frame 2. And the structure which moves the filtration unit 4 suspended by the said chain by driving a sprocket and moving a chain may be sufficient.

隣接するろ過ユニット4間には、複数の上部支持部材7aと下部支持部材7bの間に張設された無端状のろ布7cが上下方向に配設されている。   Between the adjacent filtration units 4, an endless filter cloth 7c stretched between a plurality of upper support members 7a and lower support members 7b is disposed in the vertical direction.

押圧部材5を介して押圧シリンダ6によって複数のろ過ユニット4がそれぞれの間にろ布7cを挟んだ状態で、右フレーム2方向から左フレーム1方向に所定圧力で押圧されて閉板されるように構成されている。   The plurality of filtration units 4 are pressed by a predetermined pressure from the right frame 2 direction to the left frame 1 direction with the filter cloth 7c sandwiched therebetween by the pressing cylinder 6 via the pressing member 5 so as to be closed. It is configured.

ろ過ユニット4は、ろ板30とろ板30の片面に支持されたダイヤフラム20で構成され、ろ室8は、ろ枠として機能するダイヤフラム20の厚肉部とろ板30で区画されて構成される。   The filtration unit 4 includes a filter plate 30 and a diaphragm 20 supported on one side of the filter plate 30, and the filter chamber 8 is configured by being divided by a thick portion of the diaphragm 20 that functions as a filter frame and the filter plate 30.

左フレーム1には、ろ室8内に圧搾対象物である原液を供給する原液供給口9と、ろ室8で圧搾されたろ過液が排出されるろ過液排出口10が備えられている。   The left frame 1 is provided with a stock solution supply port 9 for supplying a stock solution that is an object to be squeezed into the filter chamber 8 and a filtrate discharge port 10 through which the filtrate squeezed in the filter chamber 8 is discharged.

原液供給口9から、原液をろ室8内に供給し、ろ過ユニット4で圧搾すると、ろ過液はろ過液排出口10から排出され、ろ過ユニット駆動装置でろ過ユニット4を開板すると、複数のろ過ユニット4間から脱水された脱水ケーキが排出される。   When the stock solution is supplied into the filter chamber 8 from the stock solution supply port 9 and squeezed by the filtration unit 4, the filtrate is discharged from the filtrate discharge port 10, and when the filtration unit 4 is opened by the filtration unit driving device, a plurality of filtrations are performed. The dewatered cake dehydrated from between the units 4 is discharged.

図2(a),(b)に示すように、ダイヤフラム20は、ろ枠として機能する厚肉部21が、原液を圧搾する薄肉部22の周囲に一体に成形されている。厚肉部21は、ろ板30の間で圧縮されることにより、その被圧縮面がシール面として機能する。   As shown in FIGS. 2 (a) and 2 (b), in the diaphragm 20, a thick part 21 that functions as a filter frame is integrally formed around a thin part 22 that squeezes the stock solution. The thick portion 21 is compressed between the filter plates 30 so that the compressed surface functions as a sealing surface.

薄肉部22の縁部は、図3に示すように、厚肉部21の内周の厚み方向一端部側、例えば、厚み方向一端部から距離d離隔した位置に連接され、薄肉部22の中央部は、厚肉部21の厚み方向他端部側に張り出した平坦面に形成され、平坦面と縁部とが傾斜面23で連接されている。薄肉部22のろ室側面22aには複数のろ過液溝25が形成されている。   As shown in FIG. 3, the edge portion of the thin portion 22 is connected to one end in the thickness direction of the inner periphery of the thick portion 21, for example, a position separated by a distance d from one end in the thickness direction. The portion is formed on a flat surface that protrudes toward the other end in the thickness direction of the thick portion 21, and the flat surface and the edge portion are connected by an inclined surface 23. A plurality of filtrate grooves 25 are formed in the filter chamber side surface 22 a of the thin wall portion 22.

薄肉部22の縁部は、ろ室内の原液を圧搾する際に薄肉部22が可動すると、応力集中が生じる部分である。しかし、上述の構成によれば、薄肉部22の縁部が厚肉部21の内周の厚み方向両端部から離隔した位置に連接されているので、応力集中が生じる前記縁部とろ板30との接触を回避できるので、摩擦等による破損の虞を低減し、ダイヤフラム20の寿命を延ばすことができる。   The edge of the thin wall portion 22 is a portion where stress concentration occurs when the thin wall portion 22 moves when the stock solution in the filter chamber is squeezed. However, according to the above-described configuration, the edge portion of the thin portion 22 is connected to the position separated from both end portions in the thickness direction of the inner periphery of the thick portion 21, so that the edge portion and the filter plate 30 where stress concentration occurs Therefore, the possibility of damage due to friction or the like can be reduced, and the life of the diaphragm 20 can be extended.

ダイヤフラム20の左右下部には、厚肉部21の厚み方向に貫通したろ過液排出通路26がろ過液溝25と連通して形成され、ろ過液を通水可能に構成されている。   A filtrate discharge passage 26 penetrating in the thickness direction of the thick wall portion 21 is formed in the left and right lower portions of the diaphragm 20 so as to communicate with the filtrate groove 25 so that the filtrate can be passed through.

このようなダイヤフラム20は、材質は特に問わないが、厚肉部21にはシール面として機能する程度の大きな圧力がかかり、薄肉部22は原液を圧搾するために可動するので、適度な硬さと柔軟さを併せもつものが好ましい。   The diaphragm 20 is not particularly limited in material, but the thick portion 21 is subjected to a large pressure that functions as a sealing surface, and the thin portion 22 is moved to squeeze the stock solution. Those having flexibility are preferred.

例えば、ダイヤフラム20は、熱可塑性エラストマのような高分子化合物を射出成形により厚肉部21及び薄肉部22を一体成形することができる。厚肉部21及び薄肉部22を一体成形することで、別に製作したろ枠のようなろ室空間の形成に必要な構成品数を減らすことができる。なお、厚肉部21は、ろ室内に供給される原液の供給圧力に耐え、シール面として機能する程度の圧力で挟まれる。   For example, the diaphragm 20 can integrally form the thick portion 21 and the thin portion 22 by injection molding a polymer compound such as a thermoplastic elastomer. By integrally molding the thick portion 21 and the thin portion 22, the number of components necessary for forming a filter chamber space such as a separately manufactured filter frame can be reduced. Note that the thick portion 21 is sandwiched by a pressure that can withstand the supply pressure of the stock solution supplied into the filter chamber and functions as a seal surface.

ダイヤフラム20は、シール面としての機能を保ちつつ、原液を圧搾する可動部としての機能を保つ必要があるため、エラストマ樹脂を使用する場合の硬度は、JIS A硬度65〜90程度の範囲が好ましい。   The diaphragm 20 needs to maintain the function as a movable part that squeezes the stock solution while maintaining the function as a sealing surface, and therefore the hardness when using the elastomer resin is preferably in the range of about JIS A hardness 65 to 90. .

厚肉部21は、中実構造であってもよいし、図3に示すように、表裏互い違いになるように複数の凹部24を形成して肉をぬすみ、ダイヤフラム20の各部の厚さの差を減らすことで、射出成形の冷却時の縮みの偏りを防止するように形成してもよい。   The thick wall portion 21 may have a solid structure, and as shown in FIG. 3, the plurality of recesses 24 are formed so as to be alternately front and back, so that the thickness of each portion of the diaphragm 20 is different. By reducing the above, it may be formed so as to prevent a bias in shrinkage during cooling of injection molding.

図4(a)に示すように、ろ板30の一側面には、隣接するダイヤフラムとの間で原液を圧縮する圧縮部31を備え、圧縮部31にろ室8で圧搾されたろ過液を通水する複数の波状のろ過液溝32aが上下方向に形成され、複数のろ過液溝32aは下部の連結溝32bで連結されている。連結溝32bはろ板30の中央から左右側方にかけて下方へ傾斜して形成され、ろ板30の左右下方に形成されたろ過液排出通路33に連通するように構成されている。   As shown in FIG. 4 (a), one side of the filter plate 30 includes a compression unit 31 that compresses the stock solution between adjacent diaphragms, and the filtrate that is compressed in the filter chamber 8 by the compression unit 31. A plurality of wavy filtrate grooves 32a through which water passes are formed in the vertical direction, and the plurality of filtrate grooves 32a are connected by a lower connection groove 32b. The connecting groove 32b is formed to be inclined downward from the center of the filter plate 30 to the left and right sides, and is configured to communicate with a filtrate discharge passage 33 formed at the lower left and right of the filter plate 30.

さらに、ろ過液排出通路33の下方には、ダイヤフラム20をろ板30で挟持した状態でろ過液排出通路26と連通するようにろ過液排出通路34が形成されている。   Further, a filtrate discharge passage 34 is formed below the filtrate discharge passage 33 so as to communicate with the filtrate discharge passage 26 in a state where the diaphragm 20 is sandwiched between the filter plates 30.

ろ板30の左右上方には、前後に貫通する原液供給路35が設けてあり、原液供給路35の周縁部に原液供給部材40が緩挿可能な凹部36が形成され、凹部36にはパッキン36aが備えられている。   A stock solution supply passage 35 penetrating in the front-rear direction is provided at the upper left and right sides of the filter plate 30, and a recess 36 into which the stock solution supply member 40 can be loosely inserted is formed at the periphery of the stock solution supply passage 35. 36a is provided.

ろ板30の左右側方には、一対のガイドレール3に載架するための一対のスライドピース45が取り付けられている。   A pair of slide pieces 45 for mounting on the pair of guide rails 3 are attached to the left and right sides of the filter plate 30.

図5に示すように、原液供給部材40は原液供給路35に挿通可能な原液供給管41と、ろ板30の凹部36に緩挿される原液供給部42で構成され、原液供給部42には原液供給管41から直交して分岐し、原液供給管41から供給される原液をろ室8内へと供給する給液路43が形成してある。   As shown in FIG. 5, the stock solution supply member 40 includes a stock solution supply pipe 41 that can be inserted into the stock solution supply path 35 and a stock solution supply section 42 that is loosely inserted into the recess 36 of the filter plate 30. A liquid supply path 43 is formed which branches perpendicularly from the raw liquid supply pipe 41 and supplies the raw liquid supplied from the raw liquid supply pipe 41 into the filter chamber 8.

原液供給部材40には、当該原液供給部材40が緩挿されるろ板30と、隣接するろ板とが開いた状態で、原液供給部材40が所定の位置に配置されるように位置決めをする一対のリンク部材44a,44bがボルト44cで固定されている。   The stock solution supply member 40 is positioned so that the stock solution supply member 40 is positioned at a predetermined position with the filter plate 30 into which the stock solution supply member 40 is loosely inserted and the adjacent filter plate being opened. Link members 44a and 44b are fixed by bolts 44c.

図8(a)、(b)に示すように、隣接したろ過ユニット4a,4bによる一対のろ布7cの締め付けの際には、原液供給部材40の原液供給部42がダイヤフラム20とろ板30bの間に位置する二重のろ布7cに挟まれる格好となり、ダイヤフラム20の薄肉部22とろ板30の圧縮部31の間に形成されたろ室8内に原液を供給することになる。   As shown in FIGS. 8A and 8B, when the pair of filter cloths 7c are tightened by the adjacent filtration units 4a and 4b, the stock solution supply part 42 of the stock solution supply member 40 is connected to the diaphragm 20 and the filter plate 30b. It becomes the shape sandwiched between the double filter cloths 7c positioned between them, and the stock solution is supplied into the filter chamber 8 formed between the thin portion 22 of the diaphragm 20 and the compression portion 31 of the filter plate 30.

原液供給部材40は、隣接したろ過ユニット4a,4bを押圧し一対のろ布7c間にろ室8を形成した際には、ろ板30の凹部36に緩挿される。原液供給管41は、原液供給路35内に収容され、隣接するろ過ユニット4の原液供給路35と連なるように構成されている。   The stock solution supply member 40 is loosely inserted into the recess 36 of the filter plate 30 when the adjacent filtration units 4a and 4b are pressed to form the filter chamber 8 between the pair of filter cloths 7c. The stock solution supply pipe 41 is accommodated in the stock solution supply path 35 and is configured to be connected to the stock solution supply path 35 of the adjacent filtration unit 4.

原液供給口9から、原液供給路35に原液を供給すると、原液供給部材40を介して、各ろ室8に原液が供給される。   When the stock solution is supplied from the stock solution supply port 9 to the stock solution supply path 35, the stock solution is supplied to each filter chamber 8 via the stock solution supply member 40.

図6(a),(b)に示すように、ろ板30の圧縮部31の裏面の他側面にはダイヤフラム20を嵌入可能な立上り部37及び取付面38が形成されている。立上り部37の厚さは、ダイヤフラム20の厚さよりも小さく設定されている。   As shown in FIGS. 6A and 6B, a rising portion 37 and a mounting surface 38 into which the diaphragm 20 can be fitted are formed on the other side surface of the back surface of the compression portion 31 of the filter plate 30. The thickness of the rising portion 37 is set to be smaller than the thickness of the diaphragm 20.

つまり、ろ板30にダイヤフラム20を嵌入支持した際に、ダイヤフラム20の厚肉部21の厚さは、立上り部37の厚さより大きいため、この厚さの差が隣接するろ板との圧縮代となる。   That is, when the diaphragm 20 is fitted and supported on the filter plate 30, the thickness of the thick portion 21 of the diaphragm 20 is larger than the thickness of the rising portion 37, so that the difference in thickness is a compression allowance between adjacent filter plates. It becomes.

通常、押圧シリンダ6により加えられる押圧力は、ろ室8内の原液が漏れださないような大きさであるが、押圧シリンダ6による押圧力がダイヤフラム20のシールに必要な所定圧力以上に強い場合でも、ダイヤフラム20の厚肉部21はろ板30の立上り部37と面一になった時点で、立上り部37が隣接するろ板30と圧力を支持するので、ダイヤフラム20の厚肉部21には所定圧以上の圧力がかからないので、ダイヤフラム20の締め付けすぎによる破損、ずれ等を回避できる。   Usually, the pressing force applied by the pressing cylinder 6 is large enough to prevent the stock solution in the filter chamber 8 from leaking out, but the pressing force by the pressing cylinder 6 is stronger than a predetermined pressure required for sealing the diaphragm 20. Even in this case, when the thick portion 21 of the diaphragm 20 is flush with the rising portion 37 of the filter plate 30, the rising portion 37 supports pressure with the adjacent filter plate 30, so that the thick portion 21 of the diaphragm 20 Since a pressure higher than a predetermined pressure is not applied, it is possible to avoid damage, displacement, etc. due to excessive tightening of the diaphragm 20.

左右の立上り部37は、取付面38にダイヤフラム20を嵌入支持した状態で、当該取付面38と隣接するろ板30の圧縮部31でダイヤフラム20を圧縮した際に、ダイヤフラム20が所定圧で圧縮されるように構成されている。なお、ダイヤフラム20は、取付面38に適宜ボルト等で固定される。   When the diaphragm 20 is compressed by the compression portion 31 of the filter plate 30 adjacent to the mounting surface 38 in a state where the diaphragm 20 is fitted and supported on the mounting surface 38, the left and right rising portions 37 are compressed at a predetermined pressure. It is configured to be. The diaphragm 20 is fixed to the mounting surface 38 with bolts or the like as appropriate.

ろ板30の取付面38の中央下方には、ダイヤフラム20を隣接するろ板の圧縮部31側へと膨らませるための加圧水を供給する加圧水導入口39a及び加圧水導入路39bが形成されている。   Formed below the center of the mounting surface 38 of the filter plate 30 are a pressurized water introduction port 39a and a pressurized water introduction passage 39b for supplying pressurized water for inflating the diaphragm 20 to the compression portion 31 side of the adjacent filter plate.

図7(a),(b),(c)に示すように、ろ板30にダイヤフラム20を嵌入した際には、加圧水は、ろ板30の下部に取り付けられた加圧水供給管46から加圧水導入路39b、加圧水導入口39aを介して、取付面38とダイヤフラム20の薄肉部22の間に供給され、ダイヤフラム20の薄肉部22が隣接するろ板30の圧縮部31側へと膨張することとなる。   As shown in FIGS. 7A, 7B, and 7C, when the diaphragm 20 is fitted into the filter plate 30, the pressurized water is introduced from the pressurized water supply pipe 46 attached to the lower portion of the filter plate 30. Supplying between the attachment surface 38 and the thin portion 22 of the diaphragm 20 through the passage 39b and the pressurized water inlet 39a, the thin portion 22 of the diaphragm 20 expands toward the compression portion 31 side of the adjacent filter plate 30. Become.

なお、ダイヤフラム20の薄肉部22を隣接するろ板30の圧縮部31側へと膨張させるのは、加圧水に限らず流体であればよく、例えば、加圧気体であってもよい。   In addition, what expand | swells the thin part 22 of the diaphragm 20 to the compression part 31 side of the adjacent filter plate 30 should just be a fluid not only pressurized water, For example, pressurized gas may be sufficient.

ろ板30は、例えばポリプロピレンのような合成樹脂材を押出成形すれば、合性樹脂の特性である軽量性と耐薬品性を生かしながら、強度的にも従来の金属性ろ板に劣ることがない。ろ板30が軽量となり、並列する複数のろ過ユニット4の重量が軽減される。   For example, if a synthetic resin material such as polypropylene is extruded, the filter plate 30 may be inferior to a conventional metal filter plate in strength while taking advantage of the lightness and chemical resistance that are characteristics of the compatible resin. Absent. The filter plate 30 becomes lightweight, and the weight of the plurality of filtration units 4 arranged in parallel is reduced.

ろ布7cについて説明する。ろ布7cは無端状に形成され、ろ過ユニット4間毎に備えられた複数の上部支持部材7aと下部支持部材7b、及び、上フレーム11内に備えられたろ布緊張装置7d、ろ布蛇行防止装置7eによって張力を与えられて状態で、ろ布駆動装置7fによってろ過ユニット4間を駆動するように構成されている。なお、上フレーム11内には洗浄装置7gが備えられ、ろ布7cが目詰まりしたときや脱水ケーキの残滓がろ布7cの表面に残留したときでも、外部から供給される洗浄液を噴射して、ろ布7cの汚れを洗浄できる。   The filter cloth 7c will be described. The filter cloth 7c is formed in an endless shape, and includes a plurality of upper support members 7a and lower support members 7b provided between the filtration units 4, a filter cloth tensioning device 7d provided in the upper frame 11, and filter cloth meandering prevention. In a state where tension is applied by the device 7e, the filter unit 4f is driven by the filter cloth driving device 7f. A cleaning device 7g is provided in the upper frame 11, and even when the filter cloth 7c is clogged or the residue of the dewatered cake remains on the surface of the filter cloth 7c, the cleaning liquid supplied from the outside is sprayed. The dirt of the filter cloth 7c can be washed.

このように、一枚のろ布7で複数のろ室8を覆えば、ろ布駆動装置7fによってろ布7cを循環させることで、全面を効率よく使用できる。なお、ろ布7cは、無端状の一枚のろ布7cを用いて、ろ布駆動装置7fによってろ布7cを循環させる構成でなくてもよい。複数のろ過ユニット4間にそれぞれ一対のろ布を張設して備え、各ろ過ユニット4間の一対のろ布がそれぞれ下方に移動するような構成であってもよい。   In this way, if the plurality of filter chambers 8 are covered with a single filter cloth 7, the entire surface can be efficiently used by circulating the filter cloth 7c by the filter cloth driving device 7f. The filter cloth 7c may not be configured to circulate the filter cloth 7c by the filter cloth driving device 7f using a single endless filter cloth 7c. A configuration in which a pair of filter cloths are stretched between the plurality of filtration units 4 and the pair of filter cloths between the filtration units 4 respectively move downward is also possible.

以上のように構成されたフィルタプレス脱水機100は、閉板工程、ろ過工程、圧搾工程、開板・脱水ケーキ排出工程の順序で運転される。各工程を図9に示す概略図に基づいて説明する。   The filter press dehydrator 100 configured as described above is operated in the order of a closing plate step, a filtration step, a pressing step, and an open plate / dehydrated cake discharging step. Each step will be described based on the schematic diagram shown in FIG.

閉板工程は、押圧シリンダ6のロッド6aを介して押圧部材5を前進させて複数のろ板ユニット4を押圧し、ダイヤフラム20の薄肉部22及びろ板30の圧縮部31の間に複数個のろ室を形成する工程である。図9(a)に示すように、閉板工程は、隣接するろ過ユニット4間にろ布7cが配置された状態で押圧シリンダ6を作動させてロッド6aを介して押圧部材5を前進させ、ろ過ユニット4を左フレーム1方向に押圧して、ろ枠として機能するダイヤフラム20の厚肉部21とろ板30で区画されるろ室8を複数形成する。   In the closing plate process, the pressing member 5 is advanced through the rod 6 a of the pressing cylinder 6 to press the plurality of filter plate units 4, and a plurality of portions are interposed between the thin portion 22 of the diaphragm 20 and the compression portion 31 of the filter plate 30. This is a step of forming a filtration chamber. As shown in FIG. 9A, in the closing plate process, the pressing cylinder 6 is operated in a state where the filter cloth 7c is disposed between the adjacent filtration units 4, and the pressing member 5 is advanced through the rod 6a. The filtration unit 4 is pressed in the direction of the left frame 1 to form a plurality of filter chambers 8 defined by the thick portion 21 and the filter plate 30 of the diaphragm 20 functioning as a filter frame.

ろ過工程は、閉板工程によって形成されたろ室8の一対のろ布7c内に原液を圧入してろ過する工程である。図9(b)に示すように、ろ過工程では閉板工程によって形成されたろ室8に左フレーム1側の原液供給口9から原液を圧入してろ布7cでろ過し、ろ過液は底部のろ過液排出口10から流下し、フィルタプレス脱水機100の外部に排水される。   The filtration step is a step in which the stock solution is pressed into the pair of filter cloths 7c of the filter chamber 8 formed by the closed plate step and filtered. As shown in FIG. 9B, in the filtration step, the stock solution is press-fitted into the filter chamber 8 formed by the closing plate step from the stock solution supply port 9 on the left frame 1 side and filtered through the filter cloth 7c, and the filtrate is filtered at the bottom. The liquid flows down from the liquid discharge port 10 and is drained to the outside of the filter press dehydrator 100.

圧搾工程は、ろ過工程によってろ布7c間に残った水分を含んだ残存物を圧縮して脱水し、脱水ケーキ状にする工程である。図9(c)に示すように、圧搾工程では、加圧水供給管46から加圧水導入口39を通じてダイヤフラム20の裏面に加圧水を供給し、ダイヤフラム20をろ室8の中央側へ膨らませて、ろ布7c間に残留したケーキを他方のろ板30の圧縮部31側へ押圧して圧縮脱水してケーキ状にする。   The squeezing step is a step of compressing and dewatering the residue containing moisture remaining between the filter cloths 7c by the filtration step to form a dehydrated cake. As shown in FIG. 9 (c), in the pressing process, pressurized water is supplied from the pressurized water supply pipe 46 to the back surface of the diaphragm 20 through the pressurized water inlet 39, and the diaphragm 20 is inflated toward the center side of the filter chamber 8, and the filter cloth 7c. The cake remaining in between is pressed to the compression part 31 side of the other filter plate 30 and compressed and dehydrated to form a cake.

開板、脱水ケーキ排出工程は、加圧水の供給を停止し、ダイヤフラム20を収縮させた後、押圧シリンダ6のロッド6aを後退させて、各ろ過ユニット4を開き、脱水ケーキを排出する工程である。図9(d)に示すように、各ろ過ユニット4を開板すると、脱水ケーキはその自重でろ布7cから落下する。粘性のある脱水ケーキがろ布に7c付着し自重で落下しない場合は、ろ布駆動装置7fによりろ布7cを上下に動かすことで剥離させる。なお、原液の圧搾に利用した加圧水を排出する際には、薄肉部に働く弾性力を加圧水を排出する力として利用することができ、薄肉部が元の位置に戻ることにより、加圧水を排出しやすいので、開板、脱水ケーキ排出工程でろ過ユニットを開いた際に、加圧水がこぼれ落ち、周囲を汚す虞を低減することができる。   The plate opening and dewatering cake discharging step is a step of stopping the supply of pressurized water and contracting the diaphragm 20, and then retracting the rod 6a of the pressing cylinder 6 to open each filtration unit 4 and discharge the dewatering cake. As shown in FIG. 9D, when each filtration unit 4 is opened, the dewatered cake falls from the filter cloth 7c by its own weight. When the viscous dehydrated cake adheres to the filter cloth 7c and does not fall under its own weight, the filter cloth drive device 7f moves the filter cloth 7c up and down to separate it. In addition, when discharging the pressurized water used for squeezing the stock solution, the elastic force acting on the thin-walled portion can be used as the force for discharging the pressurized water, and when the thin-walled portion returns to the original position, the pressurized water is discharged. Since it is easy, when the filtration unit is opened in the opening plate and dehydrated cake discharging step, the possibility of spilling pressurized water and soiling the surroundings can be reduced.

以下に本発明によるフィルタプレス脱水機の別実施形態について説明する。上述した実施形態では、図10(a)に示すように、ろ過ユニット4を一対のダイヤフラム20とろ板30で構成し、ダイヤフラム20の薄肉部と、隣接するろ板30の圧縮部でろ室8を構成する場合について説明したが、図10(b)に示すように、一対のダイヤフラム20を対向させてろ室51を構成してもよい。この場合、ろ板50の両面にダイヤフラム20を嵌入支持するように構成することができる。   Hereinafter, another embodiment of the filter press dehydrator according to the present invention will be described. In the embodiment described above, as shown in FIG. 10 (a), the filtration unit 4 is constituted by a pair of diaphragms 20 and a filter plate 30, and the filter chamber 8 is formed by the thin portion of the diaphragm 20 and the compression portion of the adjacent filter plate 30. Although the case where it comprises is demonstrated, as shown in FIG.10 (b), you may comprise the filter chamber 51 by making a pair of diaphragms 20 oppose. In this case, the diaphragm 20 can be configured to be fitted and supported on both surfaces of the filter plate 50.

上述した実施形態では、ダイヤフラム20の薄肉部22の縁部が、厚肉部21の厚み方向一端部側に連接され、薄肉部22の中央部が、厚肉部21の厚み方向他端部側に張り出した平坦面に形成され、平坦面と縁部とが傾斜面23で連接された場合について説明したが、図10(c)に示すように、ダイヤフラム20は、薄肉部22が平板状に形成され、薄肉部22の縁部が、ろ枠として機能する厚肉部21の内周の厚み方向両端部から離隔した位置に連接されている構成であってもよい。   In the embodiment described above, the edge of the thin portion 22 of the diaphragm 20 is connected to one end side in the thickness direction of the thick portion 21, and the central portion of the thin portion 22 is the other end side in the thickness direction of the thick portion 21. The flat surface and the edge portion are connected to each other by the inclined surface 23. However, as shown in FIG. 10C, the diaphragm 20 has a thin-walled portion 22 in a flat plate shape. The edge part of the thin part 22 formed, and the structure connected to the position separated from the thickness direction both ends of the inner periphery of the thick part 21 which functions as a filter frame may be sufficient.

また、図11(a)に示すように、ダイヤフラム20は、薄肉部22が平板状に形成され、薄肉部22の縁部が、ろ枠として機能する厚肉部21の内周の厚み方向一端部に連接された構成であってもよい。この場合、薄肉部22の面22bが、厚肉部21の厚み方向端部と面一に形成され、あるいは、薄肉部22の縁部が、厚肉部21の厚み方向端部からわずかに離隔して連接され、薄肉部22の面22bが、厚肉部21の厚み方向端部と略面一に形成される。   As shown in FIG. 11A, the diaphragm 20 has a thin portion 22 formed in a flat plate shape, and the edge of the thin portion 22 is one end in the thickness direction of the inner periphery of the thick portion 21 that functions as a filter frame. The structure connected with the part may be sufficient. In this case, the surface 22 b of the thin portion 22 is formed flush with the thickness direction end of the thick portion 21, or the edge of the thin portion 22 is slightly spaced from the thickness direction end of the thick portion 21. Thus, the surface 22b of the thin portion 22 is formed so as to be substantially flush with the end of the thick portion 21 in the thickness direction.

薄肉部22の縁部を、厚肉部21の厚み方向端部からわずかに、例えば、厚肉部の厚みに対して3%〜10%程度の距離だけ離隔して連接することで、応力集中が生じる前記縁部とろ板との接触を回避できるので、摩擦等による破損の虞を低減し、ダイヤフラムの寿命を延ばすことができる。   Stress concentration is achieved by connecting the edge of the thin portion 22 slightly away from the thickness direction end of the thick portion 21 by, for example, a distance of about 3% to 10% with respect to the thickness of the thick portion. Since the contact between the edge portion and the filter plate in which the occurrence of the phenomenon occurs can be avoided, the possibility of breakage due to friction or the like can be reduced, and the life of the diaphragm can be extended.

図11(b)に示すように、上述のように構成されたダイヤフラム20の薄肉部22の面22bの裏面22cに排水溝を形成し、当該裏面22cがろ室8に対向するようにダイヤフラム20をろ板30に嵌入して用いた場合、薄肉部22自体が平板状に形成されているため、厚肉部21の内周面に連なる裏面22cの縁部22dまで全体をろ室8として利用することができるので、圧入する原液の量を増加させることができる。   As shown in FIG. 11B, a drainage groove is formed on the back surface 22 c of the surface 22 b of the thin portion 22 of the diaphragm 20 configured as described above, and the diaphragm 20 so that the back surface 22 c faces the filter chamber 8. Since the thin wall portion 22 itself is formed in a flat plate shape when being inserted into the filter plate 30, the entire portion is used as the filter chamber 8 up to the edge portion 22 d of the back surface 22 c connected to the inner peripheral surface of the thick wall portion 21. As a result, the amount of stock solution to be injected can be increased.

さらに、ダイヤフラム20の薄肉部22の面22b側に注入された加圧水を排出する際には、薄肉部22に働く弾性力22kを加圧水を排出する力として利用することができ、薄肉部22の面22bが厚肉部21の厚み方向端部と面一となる位置まで戻ることにより、加圧水が完全に排出され、薄肉部22の面22b側に残ることがないため、開板、脱水ケーキ排出工程でろ過ユニット4を開いた際に、加圧水がこぼれ落ち、周囲を汚す虞を低減することができる。   Furthermore, when the pressurized water injected into the surface 22b side of the thin portion 22 of the diaphragm 20 is discharged, the elastic force 22k acting on the thin portion 22 can be used as a force for discharging the pressurized water. By returning to the position where 22b is flush with the end in the thickness direction of the thick portion 21, the pressurized water is completely discharged and does not remain on the surface 22b side of the thin portion 22. When the filtration unit 4 is opened, it is possible to reduce the possibility that pressurized water spills and stains the surroundings.

逆に、図11(c)に示すように、上述のように構成されたダイヤフラム20の薄肉部22の面22bに排水溝を形成し、当該面22bがろ室8に対向するようにダイヤフラム20をろ板30に嵌入して用いた場合、薄肉部22の面22bが厚肉部21の厚み方向端部と面一の方向に戻ろうとする弾性力22kを原液を圧搾する力として利用することができる。ろ室8内に圧入された原液全体を確実に圧搾することができる。薄肉部22の縁部付近に、ろ布の目を抜けた脱水ケーキが付着することを防止できる。   Conversely, as shown in FIG. 11 (c), a drainage groove is formed on the surface 22 b of the thin wall portion 22 of the diaphragm 20 configured as described above, and the diaphragm 20 so that the surface 22 b faces the filter chamber 8. When the filter plate 30 is used by being inserted into the filter plate 30, the elastic force 22k that the surface 22b of the thin wall portion 22 tries to return to the same direction as the end in the thickness direction of the thick wall portion 21 is used as the force for squeezing the stock solution. Can do. The whole undiluted solution press-fitted into the filter chamber 8 can be reliably squeezed. It is possible to prevent the dehydrated cake having passed through the filter cloth from adhering to the vicinity of the edge of the thin portion 22.

上述した実施形態では、ろ板30の圧縮部31の裏面の他側面の左右にダイヤフラム20を嵌入可能な立上り部37を備える構成について説明したが、立上り部は、ろ板の左右に限らず、上下に備える構成であってもよい。さらに、立上り部を小さな突起で形成し、ダイヤフラムを保持するダイヤフラム保持部を別に備える構成であってもよく、立上り部はダイヤフラムの厚肉部の圧縮を所定圧に維持できればどのような形態であってもよい。   In embodiment mentioned above, although the structure provided with the rising part 37 which can insert the diaphragm 20 in the right and left of the other side of the back surface of the compression part 31 of the filter plate 30 was demonstrated, a rising part is not restricted to right and left of a filter plate, The structure provided in the upper and lower sides may be sufficient. Further, the rising portion may be formed with a small protrusion and a diaphragm holding portion for holding the diaphragm may be provided separately. The rising portion may be in any form as long as the compression of the thick portion of the diaphragm can be maintained at a predetermined pressure. May be.

上述した実施形態は、何れも本発明の一例であり、該記載により本発明が限定されるものではなく、各部の具体的構成は本発明の作用効果が奏される範囲で適宜変更設計可能であることはいうまでもない。   Each of the above-described embodiments is an example of the present invention, and the present invention is not limited by the description. The specific configuration of each part can be appropriately changed and designed within the range where the effects of the present invention are exhibited. Needless to say.

100:フィルタプレス脱水機
1:左フレーム
2:右フレーム
3:ガイドレール
4:ろ過ユニット
5:押圧部材
6:押圧シリンダ
6a:ロッド
7a:上部支持部材
7b:下部支持部材
7c:ろ布
7d:ろ布緊張装置
7e:ろ布蛇行防止装置
7f:ろ布駆動装置
7g:洗浄装置
8:ろ室
9:原液供給口
10:ろ過液排出口
11:上フレーム
20:ダイヤフラム
21:厚肉部
22:薄肉部
23:傾斜面
24:凹部
25:ろ過液溝
26:ろ過液排出通路
30:ろ板
30b:ろ板
31:圧縮部
32a:ろ過液溝
32b:連結溝
33:ろ過液排出通路
34:ろ過液排出通路
35:原液供給路
36:凹部
36a:パッキン
37:立上り部
38:取付面
39a:加圧水導入口
39b:加圧水導入路
40:原液供給部材
41:原液供給管
42:原液供給部
43:給液路
44a,44b:リンク部材
44c:ボルト
45:スライドピース
46:加圧水供給管
50:ろ板
51:ろ室
d:距離
100: Filter press dehydrator 1: Left frame 2: Right frame 3: Guide rail 4: Filtration unit 5: Press member 6: Press cylinder 6a: Rod 7a: Upper support member 7b: Lower support member 7c: Filter cloth 7d: Filter Cloth tension device 7e: Filter cloth meandering prevention device 7f: Filter cloth drive device 7g: Cleaning device 8: Filter chamber 9: Stock solution supply port 10: Filtrate discharge port 11: Upper frame 20: Diaphragm 21: Thick part 22: Thin wall Portion 23: Inclined surface 24: Recess 25: Filtrate groove 26: Filtrate discharge passage 30: Filter plate 30b: Filter plate 31: Compression part 32a: Filtrate groove 32b: Connection groove 33: Filtrate discharge passage 34: Filtrate Discharge passage 35: Stock solution supply path 36: Recess 36a: Packing 37: Rising part 38: Mounting surface 39a: Pressurized water introduction port 39b: Pressurized water introduction path 40: Stock solution supply member 41: Stock solution supply pipe 42: Stock solution supply section 43 Supply fluid channel 44a, 44b: link member 44c: bolt 45: the sliding piece 46: the pressurized water supply pipe 50: filter plate 51: filtrate chamber d: Distance

Claims (8)

ろ枠とろ板で区画されるろ室に原液を供給して圧搾するフィルタプレス脱水機に組み込まれるダイヤフラムであって、
ろ枠として機能する厚肉部が、原液を圧搾する薄肉部の周囲に一体に成形され、ろ板で圧縮されることによりシール面が形成されるダイヤフラム。
A diaphragm built into a filter press dehydrator that supplies and squeezes a stock solution into a filter chamber partitioned by a filter frame and a filter plate,
A diaphragm in which a thick part that functions as a filter frame is integrally formed around a thin part that squeezes the stock solution and is compressed with a filter plate to form a sealing surface.
前記薄肉部が平板状に形成され、前記薄肉部の縁部が前記厚肉部の内周の厚み方向一端部に連接されている請求項1記載のダイヤフラム。   The diaphragm according to claim 1, wherein the thin portion is formed in a flat plate shape, and an edge portion of the thin portion is connected to one end portion in the thickness direction of the inner periphery of the thick portion. 前記厚肉部の内周面と、前記内周面に連なる前記薄肉部の一面と、前記一面に対向するろ板との間にろ室が形成されるように構成されている請求項2記載のダイヤフラム。   The filter chamber is formed between an inner peripheral surface of the thick portion, one surface of the thin portion continuous to the inner peripheral surface, and a filter plate facing the one surface. Diaphragm. 前記薄肉部が平板状に形成され、前記薄肉部の縁部が前記厚肉部の内周の厚み方向両端部から離隔した位置に連接されている請求項1記載のダイヤフラム。   The diaphragm according to claim 1, wherein the thin portion is formed in a flat plate shape, and an edge portion of the thin portion is connected to a position separated from both end portions in the thickness direction of the inner periphery of the thick portion. 前記薄肉部の縁部が、ろ枠として機能する厚肉部の厚み方向一端部側に連接され、前記薄肉部の中央部が、前記厚肉部の厚み方向他端部側に張り出した平坦面に形成され、前記平坦面と前記縁部とが傾斜面で連接されている請求項1、2または4の何れかに記載のダイヤフラム。   A flat surface in which an edge of the thin portion is connected to one end in the thickness direction of the thick portion that functions as a filter frame, and a central portion of the thin portion projects to the other end in the thickness direction of the thick portion The diaphragm according to claim 1, wherein the flat surface and the edge portion are connected by an inclined surface. 請求項1から5の何れかに記載のダイヤフラムで原液を圧搾するフィルタプレス脱水機に組み込まれるろ板であって、
他のろ板との間で前記ダイヤフラムを圧縮する圧縮部と、ダイヤフラムの圧縮を所定圧とするための立上り部が形成されているろ板。
A filter plate incorporated in a filter press dehydrator that squeezes the stock solution with the diaphragm according to any one of claims 1 to 5,
The filter plate in which the compression part which compresses the said diaphragm between other filter plates, and the rising part for making compression of a diaphragm into a predetermined pressure are formed.
前記立上り部の厚さは、ダイヤフラムの厚肉部の厚さより小さく設定されている請求項6記載のろ板。   The thickness of the said rising part is a filter plate of Claim 6 set smaller than the thickness of the thick part of a diaphragm. 請求項1から5の何れかに記載のダイヤフラムと、請求項6または7記載のろ板を備えたフィルタプレス脱水機。   A filter press dehydrator comprising the diaphragm according to any one of claims 1 to 5 and the filter plate according to claim 6 or 7.
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CN102652888A (en) * 2012-04-19 2012-09-05 佛山市金凯地过滤设备有限公司 Filter plate group of horizontal type spring squeezer
WO2012127675A1 (en) * 2011-03-24 2012-09-27 株式会社クボタ Diaphragm, filter plates, and filter press dehydrator
CN117085379A (en) * 2023-10-19 2023-11-21 汕头市黄方生物科技有限公司 Horizontal stacking filter pressing extraction equipment and application thereof in radix puerariae planting extraction production

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CN117085379B (en) * 2023-10-19 2024-03-08 汕头市黄方生物科技有限公司 Horizontal stacking filter pressing extraction equipment and application thereof in radix puerariae planting extraction production

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