JP3630806B2

JP3630806B2 - Solid-liquid separator

Info

Publication number: JP3630806B2
Application number: JP31955795A
Authority: JP
Inventors: 慶治石井
Original assignee: Tsurumi Manufacturing Co Ltd
Current assignee: Tsurumi Manufacturing Co Ltd
Priority date: 1995-11-13
Filing date: 1995-11-13
Publication date: 2005-03-23
Anticipated expiration: 2015-11-13
Also published as: JPH09136006A

Description

【０００１】
【産業上の利用分野】
本発明は、液体中に含まれている固形物、特に懸濁固形物（ＳＳ）を分離すると共に、分離した固分と液分を各別に取り出すための装置に関する。
【０００２】
【従来技術とその問題点】
直径を均しくする多数の回転プレートを回転軸に嵌着して各プレート間に細隙溝を保有させると共に各プレートに送液用透孔を配設してなる積層状濾過素子の複数を、隣接するもの同士互いにプレートを相手の細隙溝に嵌入させて交接状態に配設した型式の固液分離装置は公知である。
【０００３】
そしてこの型式の固液分離装置では、細隙溝への回転プレートの嵌入を深くすれば送液用透孔が塞がれることになるため、プレート周辺部のみが細隙溝へ嵌入するよう軸間間隔を広く取った濾過素子の配設態様としているが、その結果、プレート同士の重なり部分の面積が小さくなって固液分離作用が不十分となり、送液用透孔からの濾液の誘出作用も微弱であり、また、プレートの届かない細隙溝および送液用透孔に固形物が詰まり易く且つその除去機能も働かないという欠点がある。
【０００４】
【発明の目的】
本発明の目的は、固液分離装置に関し、自浄作用によって細隙溝および送液路への固形物の進入が阻止し得られると共に円滑な濾液の誘出作用が行われて、十分な固液分離効果を発揮させることにある。
【０００５】
【発明の構成】
本発明に係る固液分離装置においては、円形側板で挟持された間板の外周に環状細隙溝を保有させるよう側板と間板に直径差を付してなる大径濾過素子と、上記濾過素子と同じ構成でそれよりも小径に作られ且つ環状細隙溝に後記遊環板を嵌装させた小径濾過素子とを、同一回転軸に交互に複数組嵌着して積層状回転体となし、該積層状回転体に軸方向の送液路が貫通されるよう各間板および側板に同心状の透孔を設け、これら透孔のうち小径濾過素子における間板に穿設された透孔のみ円板外周縁に環状細隙溝へ通ずる切欠部を開口させ、小径濾過素子における環状細隙溝と嵌合する遊環板の外径は側板の外径よりも大径で、内径は短径部で間板の外径と同径ないし僅かに大径となり長径部で間板の外径よりも大径となるよう楕円形等非真円形に形成されており、原液供給口および固分排出口を有する処理槽内に前記積層状回転体複数個を順次隣接させ、大径濾過素子における側板の外周部側面同士が重なり合い且つ小径濾過素子の遊環板の外周部を大径濾過素子の環状細隙溝内へ介挿し、積層状回転体の送液路と対向する液分取出孔を処理槽の側壁に穿設した。
【０００６】
【実施例】
以下実施例の図面により説明をする。
【０００７】
１ａは後記積層回転体２の一部を構成する大径濾過素子であって、円形側板３ａ，３ａで挟持された間板４ａの外周に環状細隙溝５ａを保有させるよう側板３ａと間板４ａに直径差が付せられている。１ｂは上記大径濾過素子１ａと同じ構成でそれよりも小径に作られた小径濾過素子であって、円形側板３ｂ，３ｂで挟持された間板４ｂの外周に形成された環状細隙溝５ｂには後記遊環板６が嵌装されている。そしてこれらの大径濾過素子１ａと小径濾過素子１ｂとを、回転軸７へ交互に複数組嵌着してなる積層状回転体２に、軸方向の送液路８が貫通されるよう、各側板３ａ，３ｂおよび間板４ａ，４ｂに同心状の透孔９‥‥９を配設するが、これら透孔９‥‥９のうち小径濾過素子１ｂにおける間板４ｂに穿設された透孔９のみ円板外周縁に環状細隙溝５ｂへ通ずる切欠部１０が開口されている。小径濾過素子１ｂにおける環状細隙溝５ｂと嵌合する遊環板６の外径は側板３ｂの外径よりも大径で、内径は短径部Ａで間板４ｂの外径と同径ないし僅かに大径となり長径部Ｂで間板４ｂの外径よりも大径となるよう、例えば楕円形等非真円形に形成されている。
【０００８】
１１は処理槽であって、その上壁には原液の供給口１２が開設され、後端壁には固分排出口１３が開設されている。処理槽１１内には複数の前記積層状回転体２‥‥２を順次隣接させ、大径濾過素子１ａ，１ａにおける側板３ａ，３ａの外周部側面同士が重なり合い且つ小径濾過素子１ｂ，１ｂの遊環板６，６の外周部が大径濾過素子１ａ，１ａの環状細隙溝５ａ，５ａ内へ介挿した状態で、例えば固分排出口１３を上下から挟むよう二列に配列されるよう、積層状回転体２‥‥２の回転軸７‥‥７を処理槽１１の両側壁に支承させるのである。なお、図示はされていないが、処理槽１１の一方の外側には濾液室が付設されており、各回転軸７‥‥７の支承部の周辺に穿設された流通孔を介して前記送液路８と濾液室とが導通するようになっている。また、処理槽１１の他方の外側には各回転軸７‥‥７の先端部が導出せられ、その導出先端部にはスプロケットホイールがそれぞれ嵌着されている。そして供給口１２より供給された原液を固分排出口１３の開口方向へ移動させるため、上列の積層状回転体群２‥‥２と下列の積層状回転体群２‥‥２とが互いに反対方向へ回転するように、原動機軸を各スプロケットホイールにチェーン伝動させるのである。
【０００９】
【作用】
原動機の駆動によって積層状回転体２‥‥２を所定方向へ低速回転させ、原液供給口１２から処理槽１１内へ原液を供給する。積層状回転体２‥‥２の回転に伴い環状細隙溝５内の切欠部１０から液分が送液路８‥‥８を通って濾液室内へ移送せられ、原液は固分排出口１３の開口方向へ移送させるに従い濃縮され、次第に脱水されて含水率の低い固分が固液は排出口１３から排出せられ、濾液室内の液分は下底部の液分排出口から外部へ排出される。そして積層状回転体２‥‥２の回転中、遊環板６‥‥６は偏心状態で停止し、または上記回転体２‥‥２と速度差を有して偏心回転するため、上記固液分離過程において環状細隙溝５ａ，５ｂの溝壁面にはセルフクリーニング効果が働くと共に濾過微粒子の移動強制作用が生じることになる。
【００１０】
【発明の効果】
本発明固液分離装置によれば、内周縁を非真円形に形成させた遊環板６が積層状回転体２‥‥２と偏心状に交接するため、環状細隙溝５ａ，５ｂの深部にまでセルフクリーニング効果が及んで固形物の詰まりを防止し得られ、また、小径濾過素子１ｂにおける間板４ｂの透孔９には環状細隙溝５ｂから送液路へ通ずる切欠部１０が開口されているので、送液路８への濾液の誘導が円滑となり、各板体の重なり面積が実質上増大されていることと相まって有効な固液分離作業が行われるのである。
【図面の簡単な説明】
【図１】本発明固液分離装置の縦断正面図である。
【図２】本発明固液分離装置における複数の積層状回転体の隣接態様を示した横断平面図である。
【図３】本発明固液分離装置における複数の積層状回転体の隣接態様を示した縦断側面図である。
【図４】本発明固液分離装置における積層状回転体を構成する大径濾過素子の横断平面図である。
【図５】本発明固液分離装置における積層状回転体を構成する小径濾過素子の横断平面図である。
【図６】本発明固液分離装置における大径濾過素子を構成する円形側板の側面図である。
【図７】本発明固液分離装置における大径濾過素子を構成する間板の側面図である。
【図８】本発明固液分離装置における小径濾過素子を構成する円形側板の側面図である。
【図９】本発明固液分離装置における小径濾過素子を構成する間板の側面図である。
【図１０】本発明固液分離装置における遊環板の側面図である。
【符号の説明】
１ａ大径濾過素子
１ｂ小径濾過素子
２積層状回転体
３ａ大径濾過素子の円形側板
３ｂ小径濾過素子の円形側板
４ａ大径濾過素子の間板
４ｂ小径濾過素子の間板
５ａ大径濾過素子の環状細隙溝
５ｂ小径濾過素子の環状細隙溝
６遊環板
７回転軸
８送液路
９透孔
１０切欠部
１１処理槽
１２原液供給口
１３固分排出口
Ａ遊環板の内周短径部
Ｂ遊環板の内周長径部[0001]
[Industrial application fields]
The present invention relates to an apparatus for separating solids, particularly suspended solids (SS), contained in a liquid and taking out the separated solid and liquid separately.
[0002]
[Prior art and its problems]
A plurality of laminated filter elements in which a large number of rotating plates having uniform diameters are fitted to the rotating shaft to hold slit grooves between the plates and liquid-feeding through holes are arranged in each plate, A solid-liquid separation device of a type in which adjacent plates are placed in a mating state with their plates inserted into each other's narrow groove is known.
[0003]
In this type of solid-liquid separator, if the rotary plate is deeply inserted into the slit groove, the liquid feed through hole is blocked, so that only the periphery of the plate is inserted into the slit groove. Although the filter element is arranged with a wide space, the area of the overlapping portion between the plates is reduced, resulting in insufficient solid-liquid separation, and the filtrate is drawn out from the liquid-feeding through-hole. The action is also weak, and there is a drawback that the solid material is easily clogged and the removal function does not work in the slit groove and the liquid feed through hole which cannot reach the plate.
[0004]
OBJECT OF THE INVENTION
The object of the present invention relates to a solid-liquid separation device, and it is possible to prevent solids from entering into the slit groove and the liquid feed path by self-cleaning action, and a smooth liquid drawing-out action is performed. The purpose is to exert a separation effect.
[0005]
[Structure of the invention]
In the solid-liquid separation device according to the present invention, the large-diameter filter element having a diameter difference between the side plate and the intermediate plate so as to hold an annular slit groove on the outer periphery of the intermediate plate sandwiched between the circular side plates, and the filtration A laminated rotating body in which a plurality of small-diameter filtering elements having the same configuration as the element and having a smaller diameter than that of the element and having a circular ring groove fitted with a post-circular ring plate are alternately mounted on the same rotation shaft. None, concentric through holes are provided in each of the interplates and the side plates so that the axial direction of the liquid feed passage is penetrated through the laminated rotating body, and among these through holes, the through holes formed in the intermediary plate in the small-diameter filter element are provided. Open the notch that leads to the annular slit groove only on the outer peripheral edge of the disc, and the outer diameter of the free ring plate that fits into the annular slit groove in the small-diameter filter element is larger than the outer diameter of the side plate. Ellipse or other non-true so that the short diameter part is the same diameter or slightly larger than the outer diameter of the intermediate plate and the longer diameter part is larger than the outer diameter of the intermediate plate A plurality of the laminated rotating bodies are sequentially adjacent to each other in a processing tank having a stock solution supply port and a solid content discharge port, and the outer peripheral side surfaces of the side plates in the large-diameter filter element overlap each other and the small-diameter filter element is formed. The outer peripheral part of the idle ring plate was inserted into the annular slit groove of the large-diameter filter element, and a liquid extraction hole facing the liquid feeding path of the laminated rotating body was formed in the side wall of the treatment tank.
[0006]
【Example】
Hereinafter, description will be made with reference to the drawings of the embodiments.
[0007]
1a is a large-diameter filter element that constitutes a part of the laminated rotating body 2 to be described later, and the side plate 3a and the intermediate plate are provided so that an annular slit groove 5a is held on the outer periphery of the intermediate plate 4a sandwiched between the circular side plates 3a and 3a. A diameter difference is given to 4a. 1b is a small-diameter filter element having the same configuration as that of the large-diameter filter element 1a and having a smaller diameter than the large-diameter filter element 1a, and an annular slit groove 5b formed on the outer periphery of the intermediate plate 4b sandwiched between the circular side plates 3b and 3b. A free ring plate 6 to be described later is fitted in the. Each of the large-diameter filter elements 1a and the small-diameter filter elements 1b is inserted into the rotary shaft 7 alternately in such a manner that the axially directed liquid supply path 8 passes through the laminated rotary body 2. Concentric through holes 9... 9 are provided in the side plates 3 a and 3 b and the intermediate plates 4 a and 4 b, and the through holes formed in the intermediate plate 4 b in the small-diameter filter element 1 b of these through holes 9. Only 9 has a notch 10 that opens to the annular slit groove 5b at the outer periphery of the disk. In the small-diameter filter element 1b, the outer diameter of the free ring plate 6 fitted to the annular slit groove 5b is larger than the outer diameter of the side plate 3b, and the inner diameter is the same as the outer diameter of the intermediate plate 4b at the short diameter portion A. It is formed in a non-circular shape such as an ellipse so that it has a slightly larger diameter and a larger diameter than the outer diameter of the intermediate plate 4b at the long diameter portion B.
[0008]
Reference numeral 11 denotes a processing tank, which has a stock solution supply port 12 on its upper wall and a solid content discharge port 13 on its rear end wall. A plurality of the laminated rotators 2... 2 are sequentially adjacent to each other in the treatment tank 11, the side surfaces of the side plates 3a and 3a of the large-diameter filter elements 1a and 1a are overlapped, and the small-diameter filter elements 1b and 1b are idle. With the outer peripheral portions of the annular plates 6 and 6 being inserted into the annular slit grooves 5a and 5a of the large-diameter filter elements 1a and 1a, for example, the solid content outlets 13 are arranged in two rows so as to sandwich the upper and lower sides. The rotating shafts 7 of the laminated rotating bodies 2... 2 are supported on both side walls of the treatment tank 11. Although not shown in the figure, a filtrate chamber is attached to one outer side of the treatment tank 11, and the above-mentioned feed is made through a flow hole formed around the support portion of each rotary shaft 7. The liquid path 8 and the filtrate chamber are electrically connected. Moreover, the front-end | tip part of each rotating shaft 7 ... 7 is derived | led-out by the other outer side of the processing tank 11, and the sprocket wheel is each fitted by the derived | lead-out front-end | tip part. In order to move the undiluted solution supplied from the supply port 12 in the opening direction of the solid content discharge port 13, the upper row of the rotary rotor groups 2 ... 2 and the lower row of the rotary rotor groups 2 ... 2 are mutually connected. The motor shaft is chain-transmitted to each sprocket wheel so that it rotates in the opposite direction.
[0009]
[Action]
The laminated rotator 2... 2 is rotated at a low speed in a predetermined direction by driving the prime mover, and the stock solution is supplied into the treatment tank 11 from the stock solution supply port 12. As the laminated rotating body 2... 2 rotates, the liquid component is transferred from the notch 10 in the annular slit groove 5 through the liquid supply path 8... 8 into the filtrate chamber. Concentrated as it is moved in the direction of opening of the liquid, gradually dehydrated, and the solid content having a low water content is discharged from the outlet 13, and the liquid in the filtrate chamber is discharged to the outside through the liquid outlet at the bottom. The During rotation of the laminated rotator 2... 2, the idler plates 6... 6 stop in an eccentric state or rotate eccentrically with a speed difference from the rotator 2. In the separation process, the self-cleaning effect acts on the groove wall surfaces of the annular slit grooves 5a and 5b, and the forced movement of the filtered fine particles occurs.
[0010]
【The invention's effect】
According to the solid-liquid separation device of the present invention, the idler plate 6 having the inner peripheral edge formed in a non-circular shape is eccentrically contacted with the laminated rotator 2... 2, so that the deep portions of the annular slit grooves 5 a and 5 b The clogging of the solid matter can be prevented by the self-cleaning effect, and the through hole 9 of the intermediate plate 4b in the small-diameter filter element 1b has a notch 10 that opens from the annular slit groove 5b to the liquid feeding path. Therefore, the guidance of the filtrate to the liquid feeding path 8 is smooth, and an effective solid-liquid separation operation is performed in combination with the fact that the overlapping area of each plate is substantially increased.
[Brief description of the drawings]
FIG. 1 is a longitudinal front view of a solid-liquid separator of the present invention.
FIG. 2 is a cross-sectional plan view showing an adjacent aspect of a plurality of laminated rotating bodies in the solid-liquid separation device of the present invention.
FIG. 3 is a longitudinal side view showing an adjacent aspect of a plurality of laminated rotating bodies in the solid-liquid separator of the present invention.
FIG. 4 is a cross-sectional plan view of a large-diameter filter element constituting a laminated rotator in the solid-liquid separator of the present invention.
FIG. 5 is a cross-sectional plan view of a small-diameter filter element constituting a laminated rotator in the solid-liquid separator of the present invention.
FIG. 6 is a side view of a circular side plate constituting a large-diameter filter element in the solid-liquid separation device of the present invention.
FIG. 7 is a side view of an intermediate plate constituting a large-diameter filter element in the solid-liquid separator of the present invention.
FIG. 8 is a side view of a circular side plate constituting a small-diameter filter element in the solid-liquid separator of the present invention.
FIG. 9 is a side view of an intermediate plate constituting a small-diameter filter element in the solid-liquid separator of the present invention.
FIG. 10 is a side view of an idler plate in the solid-liquid separator of the present invention.
[Explanation of symbols]
1a Large-diameter filter element 1b Small-diameter filter element 2 Laminated rotating body 3a Large-diameter filter element circular side plate 3b Small-diameter filter element circular side plate 4a Large-diameter filter element intermediate plate 4b Small-diameter filter element intermediate plate 5a Large-diameter filter element Annular slit groove 5b Annular slit groove 6 of small-diameter filter element Ring plate 7 Rotating shaft 8 Liquid feed path 9 Through hole 10 Notch portion 11 Treatment tank 12 Stock solution supply port 13 Solid content discharge port A Short inner circumference of the ring plate Diameter B The inner circumference long diameter of the idler plate

Claims

円形側板で挟持された間板の外周に環状細隙溝を保有させるよう側板と間板に直径差を付してなる大径濾過素子と、上記濾過素子と同じ構成でそれよりも小径に作られ且つ環状細隙溝に後記遊環板を嵌装させた小径濾過素子とを、同一回転軸に交互に複数組嵌着して積層状回転体となし、該積層状回転体に軸方向の送液路が貫通されるよう各間板および側板に同心状の透孔を設け、これら透孔のうち小径濾過素子における間板に穿設された透孔のみ円板外周縁に環状細隙溝へ通ずる切欠部を開口させ、小径濾過素子における環状細隙溝と嵌合する遊環板の外径は側板の外径よりも大径で、内径は短径部で間板の外径と同径ないし僅かに大径となり長径部で間板の外径よりも大径となるよう楕円形等非真円形に形成されており、原液供給口および固分排出口を有する処理槽内に前記積層状回転体複数個を順次隣接させ、大径濾過素子における側板の外周部側面同士が重なり合い且つ小径濾過素子の遊環板の外周部を大径濾過素子の環状細隙溝内へ介挿し、積層状回転体の送液路と対向する液分取出孔を処理槽の側壁に穿設したことを特徴とする固液分離装置。A large-diameter filter element with a difference in diameter between the side plate and the inter-plate so that an annular slit groove is held on the outer periphery of the inter-plate sandwiched between the circular side plates, and a smaller diameter than that with the same configuration as the above-described filter element. And a plurality of small-diameter filter elements in which a circular ring plate, which will be described later, is fitted in the annular slit groove, are alternately assembled on the same rotational shaft to form a laminated rotator, and the laminated rotator has an axial direction. Concentric through holes are provided in each of the interplates and the side plates so that the liquid feeding path is penetrated, and only the through holes formed in the interplates of the small-diameter filter element among these through holes are annular slit grooves on the outer periphery of the disc. The outer diameter of the free ring plate that fits into the annular slit groove in the small-diameter filter element is larger than the outer diameter of the side plate, and the inner diameter is the short diameter portion, which is the same as the outer diameter of the intermediate plate. It is formed in a non-circular shape such as an ellipse so that it has a diameter or slightly larger diameter and a larger diameter than the outer diameter of the intermediate plate at the long diameter portion. A plurality of the laminated rotating bodies are sequentially adjacent to each other in a treatment tank having a solid content discharge port, the outer peripheral side surfaces of the side plates of the large-diameter filter element are overlapped, and the outer peripheral portion of the idler plate of the small-diameter filter element is filtered through the large diameter. A solid-liquid separation device, characterized in that a liquid extraction hole that is inserted into an annular slit groove of an element and faces a liquid feeding path of a laminated rotator is formed in a side wall of a processing tank.