JP4372512B2 - Screw type filter dehydrator - Google Patents

Screw type filter dehydrator Download PDF

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Publication number
JP4372512B2
JP4372512B2 JP2003366492A JP2003366492A JP4372512B2 JP 4372512 B2 JP4372512 B2 JP 4372512B2 JP 2003366492 A JP2003366492 A JP 2003366492A JP 2003366492 A JP2003366492 A JP 2003366492A JP 4372512 B2 JP4372512 B2 JP 4372512B2
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annular
screw
diameter portion
movable plate
filter body
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JP2005125287A (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
    • B30B9/14—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

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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真円形の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. As a delivery port, a screw conveyor in which the outer diameter of the screw blade is smaller than the inner diameter of the annular filter plate is fitted into the center hole of the filter body, and a true circular ring that rotates eccentrically with the rotation of the screw conveyor. A screw type filtration dewatering device is known in which a movable plate is loosely fitted between the annular filtration plates and each slit formed between the annular filtration plate and the annular movable plate is used as a drainage groove. (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、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 annular movable plate continuously slides on the outer edge of the screw blade, which increases the load on the prime mover and increases the prime mover. Is 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、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 filter dehydrator 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 load on the prime mover. Is to provide.

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全内周縁に大径部と小径部とを所要間隔でほぼ等開度に隔在させた態様に形成され、スクリューコンベアの駆動時には小径部のみがスクリューブレードの外縁と非連続的に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 large diameter portion and the small diameter portion are separated at substantially equal openings at a required interval on the entire inner peripheral edge of the annular movable plate that rotates eccentrically with the rotation of the screw conveyor between the layers of the annular filtration plates. formed in Zaisa allowed manner, at the time of driving of the screw conveyor is the most important feature that only a small diameter portion is configured to contact an outer edge and a non-continuous sliding of the screw blade.

本発明濾過脱水装置における環状可動プレートは、全内周縁に大径部と小径部とを所要間隔でほぼ等開度に隔在させた態様に形成され、軽量に構成されると共に、スクリューコンベアの駆動時には小径部のみがスクリューブレードの外縁と非連続的に摺接するため、従来よりも摺動摩擦抵抗が少なくなって原動機への負荷が軽減されることになる。 The annular movable plate in the filtration and dewatering device of the present invention is formed in a mode in which the large diameter portion and the small diameter portion are spaced apart at substantially the same opening at a required interval on the entire inner periphery , and is configured to be lightweight, since only the small diameter portion at the time of driving contact outer edge and a non-continuous sliding of the screw blade, so that the load on the prime mover becomes less sliding frictional resistance than conventionally can be 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の全内周縁に大径部８ａと小径部８ｂを所要間隔でほぼ等開度に隔在させた態様で、例えば歯輪状、波形状或いは多角形状等に形成され、スクリューコンベア６の駆動時には小径部８ｂのみがスクリューブレード５の外縁と非連続的に摺接し、大径部８ａは常に非摺接状態に保たれるよう構成されている。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. 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. In a mode in which the large-diameter portion 8a and the small-diameter portion 8b are spaced apart at substantially the same opening at a required interval on the entire inner peripheral edge of the annular movable plate 8, it is formed in, for example, a tooth ring shape, a wave shape, a polygonal shape, etc. only a small diameter portion 8b is at the time of driving the 6 contacts the outer edge and the non-continuous sliding of the screw blades 5, and the large-diameter portion 8a is configured always to be kept Hisuri contact state. 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の内周縁の小径部８ｂ・・８ｂへ斜交状に且つ非連続的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は前述のように小径部８ｂ・・８ｂのみがスクリューブレード５の外縁と非連続的に接触し、大径部８ａ・・８ａは常に非接触状態に保たれるため、摩擦抵抗が少なくて原動機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 slides obliquely and discontinuously to the small diameter portions 8 b... 8 b of the inner peripheral edge of each annular movable plate 8. In the process in which the solid liquid generated in the annular movable plates 8 and 8 and fed into the filter body 1 from the feed port 3 advances along the screw blade 5 in the axial direction, the filtered filtrate is filtered. The solids that have flowed out of the water outflow grooves 9 and 9 and have been dehydrated and have a low water content ratio are sequentially discharged from the front outlet 4. Wherein at clogging drainage outflow groove 9 · 9 by eccentric rotation of the annular movable plate 8 ... 8 is being prevented, the annular movable plate 8 ... 8 small diameter portion 8b · as described above・ Only 8b is in non-continuous contact with the outer edge of the screw blade 5, and the large diameter portions 8a and 8a are always kept in a non-contact state, so that the frictional resistance is low and the load on the prime mover 14 is reduced. become.

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って、内周縁を歯輪状に形成した事例を示す。It is a front view of the cyclic | annular movable plate in this invention apparatus, Comprising: The example which formed the inner periphery in the shape of a tooth ring is shown. 本発明装置における環状可動プレートの正面図であって、内周縁を波形状に形成した事例を示す。It is a front view of the cyclic | annular movable plate in this invention apparatus, Comprising: The example which formed the inner periphery in the waveform is shown. 本発明装置における環状可動プレートの正面図であって、内周縁を多角形状に形成した事例を示す。It is a front view of the cyclic | annular movable plate in this invention apparatus, Comprising: The example which formed the inner periphery in polygonal shape is shown.

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 大径部
８ｂ 小径部
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 Large diameter part 8b Small diameter part 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全内周縁に大径部と小径部とを所要間隔でほぼ等開度に隔在させた態様に形成され、スクリューコンベアの駆動時には小径部のみがスクリューブレードの外縁と非連続的に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 filter plate is fitted in 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 the annular filtration plates and the annular movable plate is freely fitted between the laminated layers of the annular filtration plates, and the drainage groove is used as the drainage groove, is formed to the embodiments is隔在substantially HitoshiHiraku degree a large diameter portion and a small diameter portion at required intervals to all the periphery, only a small diameter portion at the time of driving of the screw conveyor screw blade Screw filtering and dewatering apparatus characterized by being configured outer edge discontinuously sliding contact as.
JP2003366492A 2003-10-27 2003-10-27 Screw type filter dehydrator Expired - Fee Related JP4372512B2 (en)

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JP2003366492A JP4372512B2 (en) 2003-10-27 2003-10-27 Screw type filter dehydrator

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JP2005125287A JP2005125287A (en) 2005-05-19
JP4372512B2 true JP4372512B2 (en) 2009-11-25

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