JP4362346B2 - Screw type filter dehydrator - Google Patents

Screw type filter dehydrator Download PDF

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Publication number
JP4362346B2
JP4362346B2 JP2003366493A JP2003366493A JP4362346B2 JP 4362346 B2 JP4362346 B2 JP 4362346B2 JP 2003366493 A JP2003366493 A JP 2003366493A JP 2003366493 A JP2003366493 A JP 2003366493A JP 4362346 B2 JP4362346 B2 JP 4362346B2
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Prior art keywords
annular
movable plate
screw
annular movable
filter body
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JP2005125288A (en
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秀明 金谷
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
    • B30B9/26—Permeable casings or strainers
    • 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
    • B30B9/121—Screw constructions

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

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 to form a tubular filter body. A screw conveyor having a screw blade outer diameter smaller than the inner diameter of the annular filter plate is fitted into the center hole of the filter body, and an annular movable plate that rotates eccentrically as the screw conveyor rotates 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、金属製の環状可動プレートの内周縁の全周がスクリューブレードの外縁と連続的に摺接することによる摺動摩擦抵抗のため、原動機への負荷が増大し原動機が過電流になるということである。
特開平５−２２８６９５号公報 （第２図、第４図） The problem when driving this type of dehydrator is that the entire circumference of the inner peripheral edge of the metal annular movable plate is in sliding contact with the outer edge of the screw blade. That is, the prime mover becomes overcurrent.
JP-A-5-228695 (FIGS. 2 and 4)

解決しようとする課題は、スクリューブレードの外縁と環状可動プレートの内周縁との摺接面間に生じる摺動摩擦抵抗を軽減させて、摺接部の摩耗および原動機への負荷を低減するよう構成された耐久性に富む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 configured to reduce the sliding frictional resistance generated between the sliding contact surfaces of the outer edge of the screw blade and the inner peripheral edge of the annular movable plate, thereby reducing the wear of the sliding contact portion and the load on the motor. Another object of the present invention is to provide a screw-type filter dehydrator having high durability.

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各環状可動プレートの内周縁の後記介装材がスクリューブレードの外周縁に斜交状に摺接して偏心回転する環状可動プレートは、スクリューブレードの外縁と摺接する内周部分に潤滑質物製の介装材を嵌着した該環状可動プレートの内径が、前記スクリューブレードの外径よりも小さく形成されていることを最も主要な特徴とする。 In the screw type filter dewatering device of the present invention, the postscript of the inner peripheral edge of each annular movable plate is slidably contacted with the outer peripheral edge of the screw blade in an eccentric manner in accordance with the rotation of the screw conveyor between the layers of the annular filtration plates. The annular movable plate is formed such that the inner diameter of the annular movable plate, in which an intercalation material made of a lubricating material is fitted on the inner peripheral portion that is in sliding contact with the outer edge of the screw blade, is smaller than the outer diameter of the screw blade . Is the most important feature.

本発明濾過脱水装置における環状可動プレートは、スクリューブレードの外縁と摺接する内周部分に潤滑質物製の介装材が嵌着されいるので、耐久性に優れると共に、スクリューブレードの外縁と環状可動プレートの内周部分との摺接面間に生じる摺動摩擦抵抗が少なくなって摺接部の摩耗および原動機への負荷が軽減されるという利点がある。 The annular movable plate in the filtration dewatering device of the present invention is excellent in durability because an intercalation material made of a lubricating material is fitted to the inner peripheral portion that is in sliding contact with the outer edge of the screw blade, and the outer edge of the screw blade and the annular movable plate There is an advantage that the sliding frictional resistance generated between the sliding contact surfaces with the inner peripheral portion of the shaft is reduced, and the wear of the sliding contact portion and the load on the prime mover are reduced.

実施例の図面におけて、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の外径が該スクリューブレード５の外縁と摺接する環状可動プレート８の内周部分に潤滑質物製の介装材８ｂを嵌着した該環状可動プレート８の内径よりも大きく環状濾過プレート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の回転に伴い環状可動プレート８・・８の内周縁の介装材８ｂがスクリューブレード６の外周縁に斜交状に摺接して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はスクリューブレード５の外縁と摺接する内周部分に例えば樹脂や砲金など潤滑性の高い材料で作られた介装材８ｂが嵌着されいる。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の肉厚よりも僅かに大きく保持されるよう規制する。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 laminated form while maintaining a predetermined interval. Is made of a lubricating material on the inner peripheral portion of the annular movable plate 8 in which the outer diameter of the screw blade 5 is in sliding contact with the outer edge of the screw blade 5. A screw conveyor 6 formed to be larger than the inner diameter of the annular movable plate 8 fitted with the interposing material 8b and slightly smaller than the inner diameter of the annular filtration plate 2 is fitted into the center hole 7 of the filter body 1, and the screw As the conveyor 6 rotates, the annular movable plates 8... 8 that rotate eccentrically while the interposing material 8 b on the inner peripheral edge of the annular movable plates 8. Plate 2 ... Is loosely fitted between the laminated respectively, and drainage outflow groove 9 · 9 each slit formed between each annular filtration plate 2 · 2 and the annular movable plate 8 ... 8. The annular movable plate 8 is fitted with an intervening material 8b made of a material having high lubricity, such as resin or gun metal, on an inner peripheral portion that is in sliding contact with the outer edge of the screw blade 5. 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、スクリューブレード５の外周縁が各環状可動プレート８・・８の内周縁の介装材８ｂに摺接して偏心回転運動を各環状可動プレート８・・８に生じさせ、送り込み口３から濾過体１内に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は前述のように潤滑質物製の介装材８ｂがスクリューブレード５の外縁と斜交状に接触するので、耐久性に優れると共に、摩擦抵抗が少なくて摺接部の摩耗および原動機１４への負荷は軽減されることになる。 By driving the screw conveyor 6, the outer peripheral edge of the screw blade 5 is brought into sliding contact with the interposing material 8 b on the inner peripheral edge of each annular movable plate 8. In the process in which the solid liquid fed into the filter body 1 from the feed port 3 advances in the axial direction while turning along the screw blade 5, the filtered filtrate flows out from the filtrate outflow grooves 9,. Solids that have been dehydrated and have a low moisture content are sequentially discharged from the front delivery port 4. Clogging of the drainage outflow grooves 9.. 9 is prevented by the eccentric rotational movement of the annular movable plates 8... 8, but the annular movable plates 8. Since the dressing 8b contacts the outer edge of the screw blade 5 in an oblique manner, the durability is excellent, and the frictional resistance is small and the wear on the sliding contact portion and the load on the prime mover 14 are reduced.

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 the configuration of a screw-type filtration and dehydration apparatus that is an object of the present invention. 本発明装置の要部縦断側面図である。It is a principal part vertical side view of this invention apparatus. 本発明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 invention apparatus. 本発明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 invention apparatus. 本発明装置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 this invention apparatus. 本発明装置における環状可動プレートの縦断側面図である。It is a vertical side view of the cyclic | annular movable plate in this invention apparatus.

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
８ｂ 介装材
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 8b Interstitial material 9 Drainage 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該スクリューブレードの外縁と摺接する環状可動プレートの内周部分に潤滑質物製の介装材を嵌着した該環状可動プレートの内径よりも大きく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各環状可動プレートの内周縁の前記介装材がスクリューブレードの外周縁に斜交状に摺接して偏心回転する該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よう構成されている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. An annular filtration plate having an outer diameter of the screw blade larger than an inner diameter of the annular movable plate in which an intermediate material made of a lubricating material is fitted to an inner peripheral portion of the annular movable plate that is in sliding contact with the outer edge of the screw blade. A screw conveyor formed smaller than the inner diameter of the filter body is fitted in the center hole of the filter body, and the interposing material on the inner peripheral edge of each annular movable plate is obliquely crossed on the outer peripheral edge of the screw blade as the screw conveyor rotates. the annular movable plate rotates eccentrically in sliding contact with the Jo is loosely fitted between lamination of the annular filter plates, each formed between each annular filtration plate and the annular movable plate Screw filtering and dewatering apparatus characterized by being configured to the gap between drainage outlet groove.
JP2003366493A 2003-10-27 2003-10-27 Screw type filter dehydrator Expired - Fee Related JP4362346B2 (en)

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JP4362346B2 true JP4362346B2 (en) 2009-11-11

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WO2019161522A1 (en) * 2018-02-22 2019-08-29 吴云萍 Dual movable ring-stacked solid-liquid separation device

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