JP2005125404A - Screw type filtering/dehydrating device - Google Patents

Screw type filtering/dehydrating device Download PDF

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Publication number
JP2005125404A
JP2005125404A JP2003366491A JP2003366491A JP2005125404A JP 2005125404 A JP2005125404 A JP 2005125404A JP 2003366491 A JP2003366491 A JP 2003366491A JP 2003366491 A JP2003366491 A JP 2003366491A JP 2005125404 A JP2005125404 A JP 2005125404A
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annular
plate
filtration
movable plate
plates
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JP4499397B2 (en
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Hideaki Kanetani
秀明 金谷
Masahiko Fukuda
正彦 福田
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Tsurumi Manufacturing Co Ltd
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Tsurumi Manufacturing Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/12—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
    • B30B9/14—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing operating with only one screw or worm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/26—Permeable casings or strainers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Sludge (AREA)
  • Filtration Of Liquid (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a screw type filtering/hydrating device constituted so as to decrease load to a motor by reducing sliding frictional resistance which is generated between sliding contact surfaces with an annular filtering plate without lowering the mechanism of the annular movable plate. <P>SOLUTION: In the screw type filtering/dehydrating device in which the annular movable plates 8 which are eccentrically revolved with the rotation of a screw conveyer are loosely fit between laminates of the annular filtering plates 2 and each narrow gap formed between each annular filtering plate 2 and an annular movable plate 8 is taken as a filtered water flowing-out groove, the front faces and back faces of the plate surfaces of the annular movable plate 8 are formed into wavy projecting and uneven surfaces 8a, 8b and only the projecting surfaces 8b are brought into sliding contact with the annular filtering plate 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は例えば、オキシデーションディッチ法等に代表される比較的小規模の下水処理作業において発生する懸濁微粒子を含む懸濁液を、濃縮工程を経由しない低濃度の状態により、濾水と懸濁微粒子とに分離するためのスクリュー式濾過脱水装置に関するものである。   In the present invention, for example, a suspension containing suspended fine particles generated in a relatively small-scale sewage treatment operation typified by an oxidation ditch method is suspended from filtrate in a low concentration state without passing through a concentration step. The present invention relates to a screw type filter dehydrator for separating into turbid fine particles.

多数枚の環状濾過プレートを所要の間隔を保持して積層状に定着させて筒状の濾過体に形成し、該濾過体の始端開口部を固液の送り込み口とし終端開口部を脱水固分の送り出し口として、スクリューブレードの外径が環状濾過プレートの内径よりも小さく形成されたスクリューコンベアを前記濾過体の中心孔に嵌装し、該スクリューコンベアの回転に伴い偏心回転する環状可動プレートを前記環状濾過プレートの積層間にそれぞれ遊嵌させ、各環状濾過プレートと環状可動プレートとの間に形成された各細隙を濾水流出溝とするスクリュー式濾過脱水装置は公知である（例えば、特許文献1参照）。   A large number of annular filtration plates are fixed in a stacked manner while maintaining a required interval, and formed into a cylindrical filter body. The starting end opening of the filter body is used as a solid-liquid feed port, and the end opening is used as a dehydrating solid component. A screw conveyor having an outer diameter of the screw blade smaller than the inner diameter of the annular filtration plate is fitted into the center hole of the filter body, and an annular movable plate that rotates eccentrically with the rotation of the screw conveyor A screw type filtration dewatering device that is loosely fitted between the layers of the annular filtration plates and uses each slit formed between each annular filtration plate and the annular movable plate as a drainage groove is known (for example, (See Patent Document 1).

この種の脱水装置の駆動時に問題となるのは、固液の移動作用に伴う下流方向への押圧力によって各環状可動プレートの前面が、隣接する前方の環状濾過プレートの背面へ摺接し、しかもその摺接が広接触面積で行われることに起因する強い摺動摩擦抵抗のため、原動機への負荷が大きくなり、吐出圧調整弁の操作によって脱水汚泥の含水率を下げるときに生じる汚泥負荷とが相俟って原動機が過電流になるということである。このような汚泥の絞り込みによる負荷増大のことをも勘案すれば、プレート間の摺動摩擦抵抗は可及的少なくすることが望ましい。   The problem in driving this type of dehydrator is that the front surface of each annular movable plate is brought into sliding contact with the rear surface of the adjacent annular filtration plate by the pressing force in the downstream direction associated with the moving action of the solid liquid. Due to the strong sliding frictional resistance caused by the sliding contact with a wide contact area, the load on the prime mover increases, and the sludge load generated when the moisture content of the dewatered sludge is reduced by operating the discharge pressure adjustment valve. Together, the prime mover is overcurrent. Considering such an increase in load due to sludge narrowing, it is desirable to reduce the sliding friction resistance between the plates as much as possible.

環状可動プレートは、濾水流出溝の目詰まりを防止し且つ濾水の流出効率を高めるために設けれている。環状可動プレートの直径を小さくすれば、環状濾過プレートとの摺接面積も小さくなって摩擦抵抗を少なくすることができる。しかし、それでは前述した環状可動プレート本来の機構が損われることになる。
特開平５−２２８６９５号公報 （第２図、第４図） The annular movable plate is provided in order to prevent clogging of the drainage outflow groove and increase the drainage efficiency of the filtrate. If the diameter of the annular movable plate is reduced, the sliding contact area with the annular filtration plate can be reduced and the frictional resistance can be reduced. However, the original mechanism of the annular movable plate described above is damaged.
JP-A-5-228695 (FIGS. 2 and 4)

解決しようとする課題は、環状可動プレートの機能を低下させることなく環状濾過プレートとの摺接面間に生じる摺動摩擦抵抗を軽減させて、原動機への負荷を低減するよう構成されたスクリュー式濾過脱水装置を提供することにある。   The problem to be solved is a screw type filtration configured to reduce the load on the prime mover by reducing the sliding frictional resistance generated between the sliding contact surfaces with the annular filtration plate without degrading the function of the annular movable plate. It is to provide a dehydrating apparatus.

本発明スクリュー式濾過脱水装置では、環状濾過プレートの積層間においてスクリューコンベアの回転に伴い偏心回転する環状可動プレートの板面の表裏が波形の凹凸面に形成されていて凸面のみで環状濾過プレートと摺接するよう構成したことを最も主要な特徴とする。   In the screw type filtration dewatering device of the present invention, the front and back surfaces of the annular movable plate that rotates eccentrically with the rotation of the screw conveyor between the laminations of the annular filtration plates are formed on the corrugated uneven surface, and the annular filtration plate and The main feature is that it is configured to be in sliding contact.

本発明濾過脱水装置における環状可動プレートは、板面の表裏が波形の凹凸面に形成されているため肉厚の薄い材料でも強度を十分に確保できるため軽量化が可能であり、また、凸面のみで環状濾過プレートと摺接するよう構成されているため摺接面積が狭く摩擦抵抗も少ないことと相俟って原動機への負荷も軽くなり、その負荷軽減分を吐出圧調整弁の操作によって脱水汚泥の含水率を下げるときに生じる汚泥負荷への負荷配分を増やすことができ、同じ原動機への負荷条件において、従来よりも脱水汚泥の含水率を下げた濾過脱水作業を行わせることが可能となる。そして摩擦抵抗の低減を環状可動プレートの直径縮小に依存する必要がないため、濾水流出溝の目詰まりを防止し且つ濾水の流出効率を高めるという環状可動プレート本来の機能も損われることがない。   The annular movable plate in the filtration and dewatering device of the present invention can be reduced in weight because the front and back of the plate surface are formed with corrugated uneven surfaces, so that sufficient strength can be secured even with thin materials, and only the convex surface Because it is configured to be in sliding contact with the annular filtration plate, the load on the motor is lightened in combination with the small sliding contact area and low frictional resistance, and the load reduction is reduced by operating the discharge pressure adjustment valve. It is possible to increase the load distribution to the sludge load that occurs when reducing the moisture content of the filter, and under the same load conditions to the prime mover, it is possible to perform filtration and dewatering work with a lower moisture content of the dehydrated sludge than before. . In addition, since it is not necessary to reduce the frictional resistance by reducing the diameter of the annular movable plate, the original function of the annular movable plate that prevents clogging of the drainage groove and increases the drainage efficiency of the filtrate may be impaired. Absent.

実施図の図面におけて、１は筒状の濾過体であり、多数枚の環状濾過プレート２・・２を所要の間隔を保持して積層状に定着させ、該濾過体１の始端開口部を固液の送り込み口３とし終端開口部を脱水固分の送り出し口４として、スクリューブレード５の外径が環状濾過プレート２の内径よりも若干小さく形成されたスクリューコンベア６を前記濾過体１の中心孔７に嵌装し、該スクリューコンベア６の回転に伴い偏心回転する環状可動プレート８・・８を前記環状濾過プレート２・・２の積層間にそれぞれ遊嵌させ、各環状濾過プレート２・・２と環状可動プレート８・・８との間に形成された各細隙を濾水流出溝９・・９とする。前記環状可動プレート８は、板面の表裏が凹面８ａと凸面８ｂの隔在する波形に形成されていて、凸面８ｂ・・８ｂのみで環状濾過プレート２と線接触に近い状態により摺接し、凹面８ａ・・８ａは環状濾過プレート２と非接触状態である。前記環状濾過プレート２・・２の外周には例えば各環状可動プレート８・・８の外周偏心回転軌跡よりも大径に形成された座部１１・・１１を有し、該座部１１・・１１に付設された間隔保持具１２・・１２により、各環状濾過プレート２・・２間の間隔が各環状可動プレート８・・８の厚よりも僅かに大きく保持されるよ規制する。１４はスクリューコンベア６を駆動するための原動機、１５は送り出し口４に付設された吐出圧調整弁である。   In the drawings of the embodiments, reference numeral 1 denotes a cylindrical filter body, and a large number of annular filter plates 2... 2 are fixed in a stacked manner while maintaining a predetermined interval. The screw conveyor 6 is formed so that the outer diameter of the screw blade 5 is slightly smaller than the inner diameter of the annular filtration plate 2. Annular movable plates 8... 8 fitted in the center hole 7 and rotating eccentrically with the rotation of the screw conveyor 6 are loosely fitted between the laminated layers of the annular filtration plates 2. Each slit formed between 2 and the annular movable plates 8. The annular movable plate 8 is formed in a corrugated shape in which the front and back surfaces of the plate surface are separated from the concave surface 8a and the convex surface 8b, and is in sliding contact with the annular filtration plate 2 only by the convex surfaces 8b,. 8a... 8a is not in contact with the annular filtration plate 2. On the outer periphery of the annular filtration plates 2.. 2, for example, there are seat portions 11... 11 formed larger in diameter than the outer circumferential eccentric rotation trajectory of each annular movable plate 8. 11 is controlled so that the interval between the annular filtration plates 2.. 2 is held slightly larger than the thickness of each annular movable plate 8. 14 is a prime mover for driving the screw conveyor 6, and 15 is a discharge pressure adjusting valve attached to the delivery port 4.

スクリューコンベア６の駆動により環状可動プレート８・・８は環状濾過プレート２・・２間の間隙に沿って偏心回転運動を行い、送り込み口３から濾過体１内へ送り込まれた固液がスクリューブレード５に沿って旋回しながら軸方向へ前進する過程において、濾過された濾水は濾水流出溝９・・９より流出し、脱水されて含水比の低くなった固分は前方の送り出し口４から順次排出される。前記環状可動プレート８・・８の偏心回転運動によって濾水流出溝９・・９の目詰まりが防止されるのであるが、該環状可動プレート８・・８は前述のように凸面８ｂ・・８ｂのみで環状濾過プレート２・・２と線接触に近い状態により摺接し、凹面８ａ・・８ａは非接触状態であるため、偏心回転時における摩擦抵抗が少なくて原動機への負荷は軽減されることになる。また、凸面８ｂ・・８ｂは環状濾過プレート２・・２間の間隔規制の機構も兼備している。   As the screw conveyor 6 is driven, the annular movable plates 8... 8 move eccentrically along the gap between the annular filtration plates 2... 2, and the solid liquid fed into the filter body 1 from the feed port 3 is screw blades. In the process of moving forward along the axial direction while turning along the line 5, the filtered filtrate flows out from the drainage outflow grooves 9,. Are discharged sequentially. Although the clogging of the drainage outflow grooves 9.. 9 is prevented by the eccentric rotational movement of the annular movable plates 8... 8, the annular movable plates 8. Only the ring filtration plates 2 and 2 are in sliding contact with each other in a state close to line contact, and the concave surfaces 8a and 8a are in a non-contact state, so that the frictional resistance during eccentric rotation is small and the load on the motor is reduced become. Further, the convex surfaces 8b... 8b also have a mechanism for regulating the interval between the annular filtration plates 2.

本発明の実施対象となるスクリュー式濾過脱水装置の構成を略示した縦断側面図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal side view schematically showing a configuration of a screw-type filtration and dehydration apparatus that is an object of the present invention. 本発装置の要部縦断側面図である。It is a principal part vertical side view of this generator. 本発装置における濾過体の縦断正面図である。It is a vertical front view of the filter body in this generator. 本発装置におけるスクリューコンベアの縦断正面図である。It is a vertical front view of the screw conveyor in this generator. 本発装置の一実施例における環状可動プレートの正面図である。It is a front view of the cyclic | annular movable plate in one Example of this generator. 図５における環状可動プレートの側面図である。FIG. 6 is a side view of the annular movable plate in FIG. 5. 本発装置の他の実施例における環状可動プレートの正面図である。It is a front view of the cyclic | annular movable plate in the other Example of this generator. 図７における環状可動プレートの外周面の展開図である。It is an expanded view of the outer peripheral surface of the cyclic | annular movable plate in FIG.

符号の説明Explanation of symbols

１ 筒状の濾過体
２ 環状濾過プレート
３ 送り込み口
４ 送り出し口
５ スクリューブレード
６ スクリューコンベア
７ 中心孔
８ 環状可動プレート
８ａ 凹面
８ｂ 凸面
９ 濾水流出溝 DESCRIPTION OF SYMBOLS 1 Cylindrical filter body 2 Annular filtration plate 3 Inlet port 4 Outlet port 5 Screw blade 6 Screw conveyor 7 Center hole 8 Annular movable plate 8a Concave surface 8b Convex surface 9 Drainage groove

Claims (1)

多数枚の環状濾過プレートを所要の間隔を保持して積層状に定着させて筒状の濾過体に形成し、該濾過体の始端開口部を固液の送り込み口とし終端開口部を脱水固分の送り出し口として、スクリューブレードの外径が環状濾過プレートの内径よりも小さく形成されたスクリューコンベアを前記濾過体の中心孔に嵌装し、該スクリューコンベアの回転に伴い偏心回転する環状可動プレートを前記環状濾過プレートの積層間にそれぞれ遊嵌させ、各環状濾過プレートと環状可動プレートとの間に形成された各細隙を濾水流出溝とするスクリュー式濾過脱水装置において、前記環状可動プレートの板面の表裏が波形の凹凸面に形成されていて凸面のみで環状濾過プレートと摺接するよう構成したことを特徴とするスクリュー式濾過脱水装置。   A large number of annular filtration plates are fixed in a stacked manner while maintaining a required interval, and formed into a cylindrical filter body. The starting end opening of the filter body is used as a solid-liquid feed port, and the end opening is used as a dehydrating solid component. A screw conveyor having an outer diameter of the screw blade smaller than the inner diameter of the annular filtration plate is fitted into the center hole of the filter body, and an annular movable plate that rotates eccentrically with the rotation of the screw conveyor In the screw type filtration dewatering device, in which each slit formed between each annular filtration plate and the annular movable plate is used as a drainage groove, and is loosely fitted between the annular filtration plates. A screw type filtration dewatering device characterized in that the front and back surfaces of a plate are formed in a corrugated uneven surface and are in sliding contact with an annular filtration plate only on a convex surface.
JP2003366491A 2003-10-27 2003-10-27 Screw type filter dehydrator Expired - Fee Related JP4499397B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111875078A (en) * 2020-07-20 2020-11-03 杨立新 Industrial processing waste treatment equipment

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111558246B (en) * 2020-05-28 2021-11-09 林汉斌 Refining frame with high-precision screening function for medical reagent processing

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001224914A (en) * 2000-02-15 2001-08-21 Seputo:Kk Solid-liquid separator and method for the same
JP2002045997A (en) * 2000-08-07 2002-02-12 Tsurumi Mfg Co Ltd Screw type filtering-dehydrating device, and annular movable plate thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001224914A (en) * 2000-02-15 2001-08-21 Seputo:Kk Solid-liquid separator and method for the same
JP2002045997A (en) * 2000-08-07 2002-02-12 Tsurumi Mfg Co Ltd Screw type filtering-dehydrating device, and annular movable plate thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111875078A (en) * 2020-07-20 2020-11-03 杨立新 Industrial processing waste treatment equipment

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