JP2010284689A - Back pressure plate structure of multi-spindle screw press - Google Patents

Back pressure plate structure of multi-spindle screw press Download PDF

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JP2010284689A
JP2010284689A JP2009140632A JP2009140632A JP2010284689A JP 2010284689 A JP2010284689 A JP 2010284689A JP 2009140632 A JP2009140632 A JP 2009140632A JP 2009140632 A JP2009140632 A JP 2009140632A JP 2010284689 A JP2010284689 A JP 2010284689A
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screw
back pressure
pressure plate
screen
discharge side
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Hiroyuki Matsui
寛幸 松井
Masaaki Hoshino
正明 星野
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Kubota Corp
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Kubota Corp
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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
    • B30B9/18—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 with means for adjusting the outlet for the solid

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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 back pressure plate structure of a multi-spindle screw press in which the back pressure plate is driven with one actuator. <P>SOLUTION: The multi-spindle screw press includes: two or more screw spindles 31 and 32 arranged by making spindle centers be mutually in parallel; screw blades 4 formed in the screw spindles 31 and 32, respectively; a screen 2 in which a filter chamber is formed in an inside around the screw blades 4; a back pressure plate 5 movably arranged along directions of the spindle centers of the screw spindles 31 and 32 guided by the respective screw spindles 31 and 32, by opposed to an opening in a sludge discharge side of the screen 2; and one pneumatic cylinder unit 6 for pressing the back pressure plate 5 toward the opening in the sludge discharge side of the screen 2. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は多軸スクリュープレスの背圧板構造に関し、例えば下水汚泥や工業廃水汚泥等の有機性汚泥を脱水する技術に係るものである。   The present invention relates to a back pressure plate structure of a multi-axis screw press, and relates to a technique for dewatering organic sludge such as sewage sludge and industrial wastewater sludge.

従来のスクリュープレスには、例えば特許文献１に記載するものなどがあり、この種のスクリュープレスでは、図３に示すように、本体ケーシング１０１の外周部がスクリーン１０２をなし、本体ケーシング１０１を軸心方向に挿通してスクリュー軸１０３を配置し、スクリュー軸１０３にスクリュー羽根１０４を形成している。スクリュー羽根１０４は汚泥供給側から汚泥排出側へ行くほどにピッチが狭くなる形状をなし、あるいはスクリュー軸１０３の軸径が汚泥排出側ほど太くなる形状をなす。   Conventional screw presses include, for example, those described in Patent Document 1. In this type of screw press, as shown in FIG. 3, the outer periphery of the main body casing 101 forms a screen 102, and the main body casing 101 is pivoted. A screw shaft 103 is arranged in the center direction, and screw blades 104 are formed on the screw shaft 103. The screw blade 104 has a shape in which the pitch becomes narrower as it goes from the sludge supply side to the sludge discharge side, or the shaft diameter of the screw shaft 103 becomes thicker toward the sludge discharge side.

本体ケーシング１０１の汚泥排出側には開口に対向して背圧板１０５を配置しており、背圧板１０５はシリンダー装置１０６によって開口に向けて出退自在であり、開口に向けて作用させる圧力を調整することにより脱水力（圧搾力）を制御する。   A back pressure plate 105 is disposed on the sludge discharge side of the main body casing 101 so as to face the opening, and the back pressure plate 105 can be moved back and forth toward the opening by a cylinder device 106, and the pressure applied to the opening is adjusted. By controlling the dehydrating power (squeezing power).

本体ケーシング１０１に投入した脱水対象汚泥は、スクリーン１０２でろ過されながらスクリュー軸１０３およびスクリュー羽根１０４の回転によって汚泥排出側へ搬送される。この際に、スクリュー羽根１０４のピッチが汚泥排出側ほど狭くなり、あるいはスクリュー軸１０３の軸径が汚泥排出側ほど太くなることで、本体ケーシング１０１におけるスクリュー羽根１０４の１ピッチ当たりのろ室容積が減少して行く。汚泥はろ室容積の減少による圧密力および背圧板１０５による背圧の作用により脱水されて、汚泥排出側の開口から本体ケーシング１０１の外部へ脱水汚泥（ケーキ）として排出される。   The sludge to be dehydrated put into the main body casing 101 is conveyed to the sludge discharge side by the rotation of the screw shaft 103 and the screw blades 104 while being filtered by the screen 102. At this time, the pitch of the screw blades 104 becomes narrower toward the sludge discharge side, or the shaft diameter of the screw shaft 103 becomes thicker toward the sludge discharge side, so that the volume of the filter chamber per pitch of the screw blades 104 in the main body casing 101 is increased. Go down. The sludge is dehydrated by the action of the compaction force due to the reduction of the filter chamber volume and the back pressure by the back pressure plate 105, and is discharged as dehydrated sludge (cake) from the opening on the sludge discharge side to the outside of the main body casing 101.

スクリュー羽根を多条に設ける多軸スクリュープレスとしては、例えば特許文献１に記載するものがある。これは、濃縮用ケーシングの内部に一対の多条螺旋翼を水平方向に所定間隔で平行に配列したもので、双方の多条螺旋翼は自身の螺旋翼が相手の螺旋翼間に入り込むように配置しており、双方の多条螺旋翼が相互に逆方向へ回転する。   An example of a multi-axis screw press provided with multiple screw blades is disclosed in Patent Document 1. This is a pair of multi-spiral spiral blades arranged in parallel in the horizontal direction at a predetermined interval inside the casing for concentration so that both multi-spiral spiral blades enter between the spiral blades of their counterparts. It is arranged, and both multi-spiral spiral wings rotate in opposite directions.

また、特許文献２に記載するものは、スクリーン篭の内部に一対のアルキメデス・スクリューを水平方向に所定間隔で平行に配列してあり、各アルキメデス・スクリューは主ネジ山の間に主ネジ山よりも高さの低い補助ネジ山を設けてある。一対のアルキメデス・スクリューは一方のアルキメデス・スクリューの補助ネジ山が他方のアルキメデス・スクリューの主ネジ山の近くに位置するように配置してある。   Further, in Patent Document 2, a pair of Archimedes screws are arranged in parallel at a predetermined interval in the horizontal direction inside the screen cage, and each Archimedes screw is between the main threads and between the main threads. There is also a low auxiliary thread. The pair of Archimedes screws are arranged so that the auxiliary thread of one Archimedes screw is located near the main thread of the other Archimedes screw.

特開２００３−３３８９６号公報Japanese Patent Laid-Open No. 2003-33896

ところで、スクリュー軸１０３が単軸である場合には、一対のシリンダー装置（空気圧）１０６がスクリュー軸１０３を介する背圧板１０５の両側位置のそれぞれを押出している。このような場合、双方のシリンダー装置１０６の動作速度が一致しない場合には、双方のシリンダー装置１０６により背圧板１０５に作用させる推力のバランスが崩れて背圧板１０５が傾き、背圧板１０５がスクリュー軸１０３に沿って円滑に移動しなくなる。   By the way, when the screw shaft 103 is a single shaft, a pair of cylinder devices (air pressure) 106 pushes out the respective positions on both sides of the back pressure plate 105 via the screw shaft 103. In such a case, if the operating speeds of both cylinder devices 106 do not match, the thrust force applied to the back pressure plate 105 by both cylinder devices 106 is lost, the back pressure plate 105 is tilted, and the back pressure plate 105 is screw shaft. 103 does not move smoothly.

また、スクリーン１０２の開口から背圧板１０５の周囲へ押出す汚泥が、スクリュー軸１０３の上方に位置するシリンダー装置１０６のロッド上に堆積し、シリンダー装置１０６の動作を阻害する要因となる。   Further, sludge pushed out from the opening of the screen 102 to the periphery of the back pressure plate 105 accumulates on the rod of the cylinder device 106 positioned above the screw shaft 103, and becomes a factor that hinders the operation of the cylinder device 106.

本発明は上記した課題を解決するものであり、アクチュエータによって本体ケーシングの内部の汚泥に対して均一に背圧を与える多軸スクリュープレスの背圧板構造を提供することを目的とする。   The present invention solves the above-described problems, and an object of the present invention is to provide a back pressure plate structure of a multi-axis screw press that uniformly applies back pressure to sludge inside a main body casing by an actuator.

上記課題を解決するために、本発明の多軸スクリュープレスの背圧板構造は、軸心を相互に平行にして配置する複数のスクリュー軸と、各スクリュー軸に形成するスクリュー羽根と、スクリュー羽根を囲んで内部にろ室を形成するスクリーンと、スクリーンの汚泥排出側の開口に対向し、各スクリュー軸をガイドとしてスクリュー軸の軸心方向に沿って移動自在に配置する背圧板と、背圧板をスクリーンの汚泥排出側の開口に向けて押圧するアクチュエータとを備えることを特徴とする。   In order to solve the above problems, a back pressure plate structure of a multi-axis screw press according to the present invention includes a plurality of screw shafts arranged so that their shaft centers are parallel to each other, screw blades formed on each screw shaft, and screw blades. A screen that surrounds and forms a filter chamber, a back pressure plate that opposes the opening on the sludge discharge side of the screen, and that is movably disposed along the axial direction of the screw shaft with each screw shaft as a guide, and a back pressure plate And an actuator for pressing toward the opening on the sludge discharge side of the screen.

また、本発明の多軸スクリュープレスの背圧板構造において、複数のスクリュー軸は一対のスクリュー軸からなり、１台のアクチュエータにより双方のスクリュー軸の軸心間の中間位置において背圧板を押圧することを特徴とする。   Further, in the back pressure plate structure of the multi-axis screw press of the present invention, the plurality of screw shafts consist of a pair of screw shafts, and the back pressure plate is pressed at an intermediate position between the shaft centers of both screw shafts by one actuator. It is characterized by.

また、本発明の多軸スクリュープレスの背圧板構造において、複数のスクリュー軸は上下方向の位置が異なる複数のスクリュー軸からなり、アクチュエータは一つのスクリュー軸の直下において背圧板を押圧することを特徴とする。   Further, in the back pressure plate structure of the multi-axis screw press according to the present invention, the plurality of screw shafts are composed of a plurality of screw shafts having different vertical positions, and the actuator presses the back pressure plate directly under one screw shaft. And

本発明では、背圧板が複数のスクリュー軸をガイドとして移動するので、背圧板はスクリュー軸の軸心方向に沿って、かつスクリーンの汚泥排出側の開口に向けてその姿勢を保った状態で円滑に移動する。   In the present invention, since the back pressure plate moves using a plurality of screw shafts as a guide, the back pressure plate moves smoothly along the axial direction of the screw shaft and toward the opening on the sludge discharge side of the screen. Move to.

このため、スクリーン内の汚泥に対して１台のアクチュエータによって押圧しても背圧板の全体で均一に背圧を与えることができ、脱水汚泥の性状の安定化に貢献できるとともに、コストの低減を図ることができる。   For this reason, even if the sludge in the screen is pressed by one actuator, the back pressure plate can be uniformly applied with the entire back pressure plate, contributing to the stabilization of the properties of the dewatered sludge and reducing the cost. Can be planned.

背圧板は複数のスクリュー軸をガイドとしてその姿勢を保つので、アクチュエータが背圧板を押圧する位置は必ずしも限定的なものではないが、背圧板に作用する力のバランス等を考慮すると、１台のアクチュエータが一対のスクリュー軸の軸心間の中間位置において背圧板を押圧するのが好ましい。背圧板はスクリーンの汚泥排出側の開口から離間する場合にも複数のスクリュー軸をガイドとして円滑に移動する。   Since the back pressure plate maintains its posture with a plurality of screw shafts as a guide, the position where the actuator presses the back pressure plate is not necessarily limited, but considering the balance of the forces acting on the back pressure plate, etc. It is preferable that the actuator presses the back pressure plate at an intermediate position between the shaft centers of the pair of screw shafts. Even when the back pressure plate is separated from the opening on the sludge discharge side of the screen, the back pressure plate smoothly moves using a plurality of screw shafts as a guide.

また、アクチュエータが一つのスクリュー軸の直下において背圧板を押圧する構成をなし、スクリュー軸がガードの役目を果すことで、スクリーンの汚泥排出側の開口から開口縁と背圧板との間を通って排出される脱水汚泥がアクチュエータに付着して堆積するようなことはなく、アクチュエータの動作を阻害する要因を排除することができる。   In addition, the actuator is configured to press the back pressure plate directly under one screw shaft, and the screw shaft serves as a guard so that it passes from the opening on the sludge discharge side of the screen between the opening edge and the back pressure plate. The discharged dewatered sludge does not adhere to and accumulate on the actuator, and a factor that hinders the operation of the actuator can be eliminated.

本発明の実施の形態における多軸スクリュープレスを示す一部破断正面図The partially broken front view which shows the multi-axis screw press in embodiment of this invention 同実施の形態における背圧板を示す正面図Front view showing a back pressure plate in the same embodiment 従来のスクリュープレスを示す一部破断正面図Partially broken front view showing a conventional screw press

以下、本発明の実施の形態を図面に基づいて説明する。図１および２において、本実施の形態に係る多軸スクリュープレスの基本的な構成は概略的に以下のものである。
図１において、汚泥脱水機としての多軸スクリュープレスは、本体１によりスクリーン２を支持しており、スクリーン２は軸心方向で複数に分割し、かつ上下に分割した複数のセグメントからなり、スクリーン２にはパンチングメタルやウェッジワイヤ等の種々の形態のろ材を適用可能である。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2, the basic configuration of the multi-axis screw press according to the present embodiment is schematically as follows.
In FIG. 1, a multi-axis screw press as a sludge dewatering machine supports a screen 2 by a main body 1, and the screen 2 is divided into a plurality of segments in the axial direction and divided into upper and lower segments. Various types of filter media such as punching metal and wedge wire can be applied to 2.

スクリーン２は内部にろ室を形成しており、ろ室には軸心方向に挿通して多数のスクリュー軸３、およびスクリュー軸３の軸心廻りに形成した多条のスクリュー羽根４を挿通し、本体１の汚泥排出側にはスクリーン２の開口に対向して背圧板５を配置している。   The screen 2 has a filter chamber formed therein, and the filter chamber is inserted in the axial direction with a number of screw shafts 3 and a plurality of screw blades 4 formed around the axis of the screw shaft 3. The back pressure plate 5 is disposed on the sludge discharge side of the main body 1 so as to face the opening of the screen 2.

背圧板５はポリエチレン、ナイロン等の樹脂からなるが、スクリュー軸３との摩擦係数が低いものなら他の材質の材料も適用可能である。背圧板５とスクリュー軸３との間には僅かなクリアランスを設けている。背圧板５とスクリュー軸３との間には、例えばブッシュタイプのすべり軸受を介装することも可能である。   The back pressure plate 5 is made of a resin such as polyethylene or nylon, but other materials can be used as long as the coefficient of friction with the screw shaft 3 is low. A slight clearance is provided between the back pressure plate 5 and the screw shaft 3. For example, a bush type slide bearing can be interposed between the back pressure plate 5 and the screw shaft 3.

本実施の形態では一対のスクリュー軸３のそれぞれに多条のスクリュー羽根４を設けているが、本発明においてスクリュー軸３の数およびスクリュー羽根４の条数は任意に設けることができる。   In the present embodiment, the multiple screw blades 4 are provided on each of the pair of screw shafts 3. However, in the present invention, the number of screw shafts 3 and the number of screw blades 4 can be arbitrarily provided.

一対のスクリュー軸３は軸心を相互に平行に、かつ上下方向の位置を異ならせて配置しており、本実施の形態ではスクリーン２のろ室上部に配置する上位のスクリュー軸３１と、スクリーン２のろ室下部に配置する下位のスクリュー軸３２からなる。上位のスクリュー軸３１には上位のスクリュー羽根４１を形成し、下位のスクリュー軸３２には下位のスクリュー羽根４２を形成している。   The pair of screw shafts 3 are arranged such that the shaft centers are parallel to each other and the positions in the vertical direction are different. In this embodiment, the upper screw shaft 31 disposed at the upper portion of the filter chamber of the screen 2 and the screen The lower screw shaft 32 is arranged at the lower part of the two filter chambers. A higher screw blade 41 is formed on the upper screw shaft 31, and a lower screw blade 42 is formed on the lower screw shaft 32.

上位のスクリュー羽根４１および下位のスクリュー羽根４２は、羽根ピッチが汚泥排出側ほど狭くなっており、羽根の１ピッチ当たりのろ室容積が減少して行く。あるいはスクリュー軸３１、３２の軸径を汚泥排出側ほど太くすることでスクリュー羽根の１ピッチ当たりのろ室容積を減少させることも可能である。   In the upper screw blade 41 and the lower screw blade 42, the blade pitch becomes narrower toward the sludge discharge side, and the volume of the filter chamber per pitch of the blade decreases. Alternatively, the volume of the filter chamber per pitch of the screw blades can be reduced by increasing the shaft diameters of the screw shafts 31 and 32 toward the sludge discharge side.

背圧板５はスクリーン２の汚泥排出側の開口に対向しており、各スクリュー軸３１、３２をガイドとしてスクリュー軸３１、３２の軸心方向に沿って移動自在に設けている。アクチュエータをなす１台の空気圧シリンダー装置６は本体１に装着しており、ロッドが上位のスクリュー軸３１の直下においてスクリュー軸３１、３２の軸心方向に出退する。空気圧シリンダー装置６はロッド６１の先端側が双方のスクリュー軸３１、３２の軸心間の中間位置において背圧板５に連結してあり、この中間位置において背圧板５をスクリーン２の汚泥排出側の開口に向けて押圧する。アクチュエータとしては油圧シリンダー装置、電動シリンダー装置等を使用することも可能である。   The back pressure plate 5 faces the opening on the sludge discharge side of the screen 2 and is provided so as to be movable along the axial direction of the screw shafts 31 and 32 with the screw shafts 31 and 32 as guides. One pneumatic cylinder device 6 that constitutes an actuator is attached to the main body 1, and the rod is retracted in the axial direction of the screw shafts 31 and 32 immediately below the upper screw shaft 31. In the pneumatic cylinder device 6, the tip side of the rod 61 is connected to the back pressure plate 5 at an intermediate position between the shaft centers of both screw shafts 31, 32, and the back pressure plate 5 is opened at the sludge discharge side of the screen 2 at this intermediate position. Press toward. As the actuator, a hydraulic cylinder device, an electric cylinder device, or the like can be used.

上記した構成により、運転時には、左右のスクリュー羽根４を回転させつつ、汚泥供給側からスクリーン２の内部に脱水対象汚泥を投入する。脱水対象汚泥はスクリーン２でろ過されながらスクリュー軸３およびスクリュー羽根４の回転によって汚泥排出側へ搬送される。この際に、スクリュー羽根４の各羽根のピッチが汚泥排出側ほど狭くなり、各羽根の１ピッチ当たりのろ室容積が減少して行くことで、汚泥はろ室容積の減少による圧密力および背圧板５による背圧の作用により脱水され、汚泥排出側の開口から開口縁と背圧板５との間を通ってスクリーン２の外部へ排出される。この際に空気圧シリンダー装置６により加える背圧を制御することで汚泥排出側の開口と背圧板５との間隙の大きさを調整して排出汚泥の含水率を調整する。   With the configuration described above, during operation, the left and right screw blades 4 are rotated, and the sludge to be dehydrated is introduced into the screen 2 from the sludge supply side. The sludge to be dewatered is conveyed to the sludge discharge side by the rotation of the screw shaft 3 and the screw blade 4 while being filtered by the screen 2. At this time, the pitch of each blade of the screw blade 4 becomes narrower toward the sludge discharge side, and the filtration chamber volume per pitch of each blade decreases, so that the sludge is compressed by the reduction of the filtration chamber volume and the back pressure plate. 5 is dehydrated by the action of the back pressure by 5 and discharged from the opening on the sludge discharge side to the outside of the screen 2 through between the opening edge and the back pressure plate 5. At this time, by controlling the back pressure applied by the pneumatic cylinder device 6, the size of the gap between the sludge discharge side opening and the back pressure plate 5 is adjusted to adjust the moisture content of the discharged sludge.

本実施の形態では、背圧板５が複数のスクリュー軸３１、３２をガイドとして移動するので、１台の空気圧シリンダー装置６によって背圧板５を押圧しても背圧板５はスクリュー軸３１、３２の軸心方向に沿って、かつスクリーン２の汚泥排出側の開口に向けてその姿勢を保った状態で円滑に移動する。   In the present embodiment, the back pressure plate 5 moves using the plurality of screw shafts 31 and 32 as guides. Therefore, even if the back pressure plate 5 is pressed by a single pneumatic cylinder device 6, the back pressure plate 5 remains on the screw shafts 31 and 32. It moves smoothly along the axial direction while maintaining its posture toward the opening on the sludge discharge side of the screen 2.

このため、スクリーン２の内部の汚泥に対して１台の空気圧シリンダー装置６によって背圧板５の全体で均一に背圧を与えることができ、脱水汚泥の性状の安定化に貢献できる。また、背圧板およびアクチュエータをシンプルな構造にできるので、コストの低減を図ることができる。   For this reason, the back pressure plate 5 can uniformly apply back pressure to the sludge inside the screen 2 by the single pneumatic cylinder device 6, which can contribute to stabilization of the properties of the dewatered sludge. Moreover, since the back pressure plate and the actuator can be made simple, the cost can be reduced.

背圧板は複数のスクリュー軸をガイドとしてその姿勢を保つので、空気圧シリンダー装置６が背圧板５を押圧する位置は、必ずしも限定的なものではないが、背圧板５に作用する力のバランス等を考慮すると、空気圧シリンダー装置６が一対のスクリュー軸３１、３２の軸心間の中間位置において背圧板５を押圧するのが好ましい。背圧板５はスクリーン２の汚泥排出側の開口から離間する場合にも複数のスクリュー軸３１、３２をガイドとして円滑に移動する。     Since the back pressure plate maintains its posture with a plurality of screw shafts as a guide, the position where the pneumatic cylinder device 6 presses the back pressure plate 5 is not necessarily limited, but the balance of the force acting on the back pressure plate 5 can be adjusted. Considering this, it is preferable that the pneumatic cylinder device 6 presses the back pressure plate 5 at an intermediate position between the shaft centers of the pair of screw shafts 31 and 32. Even when the back pressure plate 5 is separated from the opening on the sludge discharge side of the screen 2, the back pressure plate 5 moves smoothly using the plurality of screw shafts 31 and 32 as guides.

また、上述したように本実施の形態では、一対のスクリュー軸３は軸心を相互に平行に、かつ上下方向の位置を異ならせて配置し、空気圧シリンダー装置６が一つのスクリュー軸３１の直下において背圧板５を押圧する構成であり、スクリュー軸３１が空気圧シリンダー装置６のロッド６１の上方位置でガードの役目を果すことで、スクリーン２３の汚泥排出側の開口から開口縁と背圧板５との間を通って排出される脱水汚泥が空気圧シリンダー装置６のロッド６１に付着して堆積するようなことはなく、空気圧シリンダー装置６の動作を阻害する要因を排除することができる。   Further, as described above, in the present embodiment, the pair of screw shafts 3 are arranged so that the shaft centers are parallel to each other and the vertical positions are different, and the pneumatic cylinder device 6 is directly below one screw shaft 31. In this configuration, the screw shaft 31 serves as a guard above the rod 61 of the pneumatic cylinder device 6 so that the opening edge and the back pressure plate 5 The dewatered sludge discharged through the gap does not adhere to and accumulate on the rod 61 of the pneumatic cylinder device 6, and the factors that hinder the operation of the pneumatic cylinder device 6 can be eliminated.

１ 本体
２ スクリーン
３ スクリュー軸
４ スクリュー羽根
５ 背圧板
６ 空気圧シリンダー装置
３１ 上位のスクリュー軸
３２ 下位のスクリュー軸
４１ 上位のスクリュー羽根
４２ 下位のスクリュー羽根
６１ ロッド DESCRIPTION OF SYMBOLS 1 Main body 2 Screen 3 Screw shaft 4 Screw blade 5 Back pressure plate 6 Pneumatic cylinder device 31 Upper screw shaft 32 Lower screw shaft 41 Upper screw blade 42 Lower screw blade 61 Rod

Claims (3)

軸心を相互に平行にして配置する複数のスクリュー軸と、各スクリュー軸に形成するスクリュー羽根と、スクリュー羽根を囲んで内部にろ室を形成するスクリーンと、スクリーンの汚泥排出側の開口に対向し、各スクリュー軸をガイドとしてスクリュー軸の軸心方向に沿って移動自在に配置する背圧板と、背圧板をスクリーンの汚泥排出側の開口に向けて押圧するアクチュエータとを備えることを特徴とする多軸スクリュープレスの背圧板構造。   A plurality of screw shafts arranged in parallel to each other, screw blades formed on each screw shaft, a screen surrounding the screw blades to form a filter chamber inside, and opposed to the opening on the sludge discharge side of the screen And a back pressure plate that is movably disposed along the axial direction of the screw shaft with each screw shaft as a guide, and an actuator that presses the back pressure plate toward the sludge discharge side opening of the screen. Back pressure plate structure of multi-axis screw press. 複数のスクリュー軸は一対のスクリュー軸からなり、１台のアクチュエータにより双方のスクリュー軸の軸心間の中間位置において背圧板を押圧することを特徴とする請求項１に記載の多軸スクリュープレスの背圧板構造。   2. The multi-screw drive press according to claim 1, wherein the plurality of screw shafts includes a pair of screw shafts, and the back pressure plate is pressed at an intermediate position between the shaft centers of the two screw shafts by one actuator. Back pressure plate structure. 複数のスクリュー軸は上下方向の位置が異なる複数のスクリュー軸からなり、アクチュエータは一つのスクリュー軸の直下において背圧板を押圧することを特徴とする請求項１または２に記載の多軸スクリュープレスの背圧板構造。   The multi-screw drive press according to claim 1 or 2, wherein the plurality of screw shafts comprises a plurality of screw shafts having different positions in the vertical direction, and the actuator presses the back pressure plate directly under one screw shaft. Back pressure plate structure.
JP2009140632A 2009-06-12 2009-06-12 Back pressure plate structure of multi-spindle screw press Pending JP2010284689A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014193437A (en) * 2013-03-29 2014-10-09 Kubota Corp Sludge dehydration machine
CN108908990A (en) * 2018-08-06 2018-11-30 安尼康（福建）环保设备有限公司 Solid slag squeezes output mechanism and the solid-liquid separating equipment with the mechanism

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0570786U (en) * 1992-02-24 1993-09-24 丸井工業株式会社 Screw dehydrator
JPH08173996A (en) * 1994-12-19 1996-07-09 Kin Eidai Filth dehydrator
JP2007245224A (en) * 2006-03-20 2007-09-27 Kubota Corp Sludge dehydrator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0570786U (en) * 1992-02-24 1993-09-24 丸井工業株式会社 Screw dehydrator
JPH08173996A (en) * 1994-12-19 1996-07-09 Kin Eidai Filth dehydrator
JP2007245224A (en) * 2006-03-20 2007-09-27 Kubota Corp Sludge dehydrator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014193437A (en) * 2013-03-29 2014-10-09 Kubota Corp Sludge dehydration machine
CN108908990A (en) * 2018-08-06 2018-11-30 安尼康（福建）环保设备有限公司 Solid slag squeezes output mechanism and the solid-liquid separating equipment with the mechanism

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