JP2014117918A - Dehydrator for twin screw extruder - Google Patents

Dehydrator for twin screw extruder Download PDF

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JP2014117918A
JP2014117918A JP2012276406A JP2012276406A JP2014117918A JP 2014117918 A JP2014117918 A JP 2014117918A JP 2012276406 A JP2012276406 A JP 2012276406A JP 2012276406 A JP2012276406 A JP 2012276406A JP 2014117918 A JP2014117918 A JP 2014117918A
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cylinder
screw
dehydrating
screw extruder
blade members
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JP5896892B2 (en
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Hiroyuki Okuma
博幸 大熊
Yoshinori Iwasaki
嘉則 岩崎
Yuki Asano
友希 浅野
Naoaki Kobayashi
尚彰 小林
Masamichi Ishibashi
正通 石橋
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Japan Steel Works Ltd
Tokyo Printing Ink Mfg Co Ltd
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Japan Steel Works Ltd
Tokyo Printing Ink Mfg Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To discharge moisture to the outside by means of a clearance between respective blade members by aligning the plurality of blade members, which are rotatably provided in an opening of a dewatering cylinder, along rotation of a screw.SOLUTION: In a configuration and a method for a dehydrator for a twin screw extruder, a plurality of rotatable blade members (31) overlap each other via clearances (40) in openings (32) on both sides of a dewatering cylinder (1), and moisture from a synthetic resin material (50) is removed via the clearances (40).

Description

本発明は、二軸押出機用脱水装置に関し、特に、脱水シリンダの開口に回転自在に設けられた複数の羽根部材をスクリュの回転方向に沿って整列させ、各羽根部材間の隙間から水分を外部に排出するための新規な改良に関する。   The present invention relates to a dehydrating apparatus for a twin-screw extruder, and in particular, aligns a plurality of blade members rotatably provided at the opening of a dehydrating cylinder along the rotation direction of a screw, and removes moisture from gaps between the blade members. It relates to a new improvement for discharging to the outside.

従来、用いられていたこの種の二軸押出機用脱水装置としては、特許文献１に開示された構成を、図３から図９として挙げることができる。
すなわち、図３はスクリュ式二軸押出機２０を示し、このスクリュ式二軸押出機２０のシリンダ２１は、上流側からホッパシリンダ１Ａ、脱水シリンダ１及びベントシリンダ１Ｂ等から構成され、前記脱水シリンダ１には脱水用のスクリーン３が設けられている。 Conventionally, as this type of dehydrating apparatus for a twin-screw extruder, the configuration disclosed in Patent Document 1 can be cited as FIGS. 3 to 9.
That is, FIG. 3 shows a screw type twin screw extruder 20, and a cylinder 21 of the screw type twin screw extruder 20 is composed of a hopper cylinder 1A, a dehydrating cylinder 1, a vent cylinder 1B and the like from the upstream side, and the dehydrating cylinder. 1, a screen 3 for dehydration is provided.

図４は図３における脱水シリンダ１の正面図であり、図４において符号１で示されるものは、図３のスクリュ式二軸押出機２０に用いられる脱水シリンダであり、この脱水シリンダ１の両端にはタイロッド用孔８を有する一対のフランジ７が設けられている。前記脱水シリンダ１の側部にはスクリーン３が固定部材４及びボルト９を介して固定されており、図５に示されるように、このスクリーン３は薄い板部材のパンチメタル３Ａで構成され、水分を排出可能な小径の排水孔３Ａａが無数に穿孔して構成されている。前記スクリーン３は、図６に示される前記脱水シリンダ１の排水口６を覆い、前記固定部材４により排水口６の周囲に沿って押付けられ、複数個の前記ボルト９により締付け固定されている。   4 is a front view of the dehydrating cylinder 1 in FIG. 3, and what is indicated by reference numeral 1 in FIG. 4 is a dehydrating cylinder used in the screw-type twin-screw extruder 20 in FIG. Is provided with a pair of flanges 7 having tie rod holes 8. A screen 3 is fixed to a side portion of the dewatering cylinder 1 via a fixing member 4 and a bolt 9. As shown in FIG. 5, the screen 3 is made of a thin plate member punch metal 3 </ b> A, and has a moisture content. A small-diameter drainage hole 3Aa that can discharge the water is innumerably perforated. The screen 3 covers the drain port 6 of the dewatering cylinder 1 shown in FIG. 6, is pressed along the periphery of the drain port 6 by the fixing member 4, and is fastened and fixed by a plurality of bolts 9.

図６は図５のスクリーン３の脱水状態を示す説明図であり、排水孔３Ａａから排水面３Ａｂを経て水分と合成樹脂原料５０が外部に排出される。
また、図７から図９で示される特許文献１の従来例として開示された構成においては、脱水シリンダ１がシリンダ部２に設けられたスクリーン３及び固定部材４により構成されている。 FIG. 6 is an explanatory view showing the dehydrated state of the screen 3 of FIG. 5, and the moisture and the synthetic resin raw material 50 are discharged from the drain hole 3Aa to the outside through the drain surface 3Ab.
Further, in the configuration disclosed as the conventional example of Patent Document 1 shown in FIGS. 7 to 9, the dehydrating cylinder 1 is configured by the screen 3 and the fixing member 4 provided in the cylinder portion 2.

前記脱水シリンダ１は、図７から図８で示されるように直方体ブロック形状よりなり、長尺軸方向に二軸スクリュを回転自在に挿入可能なスクリュ孔５が貫通して形成されている。このスクリュ孔５の両側部には、排水口６が外部へ開口して形成されている。また、前記脱水シリンダ１の長尺軸方向両端部にはフランジ７が形成され、このフランジ７の四隅部には前記シリンダ２１の途中に一体化して接続するためのタイロッド用孔８が軸方向に貫通して形成されている。   The dehydrating cylinder 1 has a rectangular parallelepiped block shape as shown in FIGS. 7 to 8, and is formed with a screw hole 5 through which a biaxial screw can be rotatably inserted in the long axis direction. On both sides of the screw hole 5, drainage ports 6 are formed to open to the outside. Further, flanges 7 are formed at both ends of the dewatering cylinder 1 in the longitudinal axial direction, and tie rod holes 8 for connecting to the four corners of the flange 7 in the middle of the cylinder 21 in the axial direction. It is formed through.

前記シリンダ部２の排水口６は前記スクリュ孔５の外周に沿って断面円弧状の前記スクリーン３によって覆われ、このスクリーン３は前記固定部材４により前記排水口６の周囲に沿って押付けられ、複数個のボルト９により締付け固定されている。前記スクリーン３は、前記シリンダ部２の前記排水口６の周囲に沿って設けられた枠状の固定部材４によって設けられている。このスクリーン３は、シリンダ２１の長尺軸方向に並べられた多数本のウエッジワイヤ３Ａにより構成されている。   The drain port 6 of the cylinder part 2 is covered by the screen 3 having a circular arc cross section along the outer periphery of the screw hole 5, and the screen 3 is pressed along the periphery of the drain port 6 by the fixing member 4, It is fastened and fixed by a plurality of bolts 9. The screen 3 is provided by a frame-shaped fixing member 4 provided along the periphery of the drain port 6 of the cylinder portion 2. The screen 3 is composed of a large number of wedge wires 3A arranged in the longitudinal axis direction of the cylinder 21.

なお、多数本の前記ウエッジワイヤ３Ａは、前記スクリュ孔５の外周に沿って円弧状に並べて配置されると共に、水分を排出可能な隙間すなわちスリット１１が平行に配置されている。さらに、前記ウエッジワイヤ３Ａは、図９で示されるように断面が略二等辺三角形のテーパ形状に構成され、その二等辺三角形の底辺を前記スクリュ孔５の外周に沿わせて配置されている。その結果、このスリット１１は内側（スリット孔５）から外側へ排水断面を徐々に拡大して排水を容易にするように構成されている。
尚、前述の図７から図９に示される構成と類似の構成を示すものは特許文献２に開示されている。 The multiple wedge wires 3 </ b> A are arranged in an arc along the outer periphery of the screw hole 5, and gaps or slits 11 that can discharge moisture are arranged in parallel. Further, as shown in FIG. 9, the wedge wire 3 </ b> A is configured in a tapered shape having a substantially isosceles triangle cross section, and the bottom of the isosceles triangle is arranged along the outer periphery of the screw hole 5. As a result, the slit 11 is configured to facilitate the drainage by gradually expanding the drainage cross section from the inside (slit hole 5) to the outside.
Note that a configuration similar to the configuration shown in FIGS. 7 to 9 is disclosed in Patent Document 2.

特開２００３−３９５３０号公報JP 2003-39530 A 特開平１０−２１７３１１号公報JP-A-10-217311

従来の二軸押出機用脱水シリンダは、以上のように構成されていたため、次のような課題が存在していた。
すなわち、前述の図３から図９に開示された二軸押出機用脱水装置におけるスクリーンとしては、図３から図６に示されたパンチメタルを用いた構成の場合、孔の径を大径とすると水分は良好に排出されるが、樹脂自体も必要以上に排出されることになり、孔の径を小とすると詰まりやすく、実用上、課題発生となっていた。
また、図７から図９に示されるウエッジワイヤを用いた構成の場合、溶融樹脂圧力によってウエッジワイヤが目開きして樹脂漏れが多くなることがあった。また、樹脂原料によっては、排水部の目が完全に詰まるまでの時間が短く、長時間の稼動においては、スクリーンの交換頻度が多くなると云う課題が存在していた。 Since the conventional dehydrating cylinder for a twin-screw extruder is configured as described above, the following problems exist.
That is, in the case of the configuration using the punch metal shown in FIGS. 3 to 6 as the screen in the above-described dehydrating apparatus for the twin screw extruder disclosed in FIGS. 3 to 9, the diameter of the hole is set to a large diameter. Then, moisture is discharged well, but the resin itself is discharged more than necessary, and if the diameter of the hole is made small, clogging is likely to occur, causing problems in practice.
Further, in the case of the configuration using the wedge wire shown in FIG. 7 to FIG. 9, the wedge wire may be opened due to the molten resin pressure, and the resin leakage may increase. Also, depending on the resin raw material, there is a problem that the time until the drainage section is completely clogged is short, and the frequency of screen replacement increases during long-time operation.

本発明は、以上のような課題を解決するためになされたもので、特に、従来構成のパンチメタルやウエッジワイヤを用いたスクリーンの代りに、互いに回転動作する複数の羽根部材間に形成される隙間を用いて安定的に脱水することである。   The present invention has been made in order to solve the above-described problems. In particular, the present invention is formed between a plurality of blade members that rotate relative to each other, instead of a screen using punch metal or wedge wires having a conventional configuration. It is dehydrating stably using a gap.

本発明による二軸押出機用脱水装置は、両側部に開口を有する脱水シリンダと、前記脱水シリンダ内に設けられ一対のスクリュを回転自在に保持するためのシリンダ孔と、前記各開口の外側に軸支して設けられると共に互いに重なり合う状態で配設された複数の羽根部材と、を備え、前記各スクリュが回転して水分を含んだ合成樹脂原料を下流側へ搬送する際に、前記各羽根部材は前記各スクリュの回転方向に沿って整列し、前記各羽根部材の間の隙間を経て前記水分が外部へ排出される構成であり、また、前記羽根部材は、横断面四角状の長手部材よりなる構成であり、また、前記各羽根部材を軸支するための軸支部は、前記脱水シリンダの軸方向からみて前記スクリュの外周に沿って弧状に配設されている構成である。   A dehydrating apparatus for a twin-screw extruder according to the present invention includes a dehydrating cylinder having openings on both sides, a cylinder hole provided in the dehydrating cylinder for rotatably holding a pair of screws, and outside each opening. A plurality of blade members provided to be pivotally supported and arranged to overlap each other, and when each of the screws rotates to convey the synthetic resin raw material containing moisture to the downstream side, each of the blades The members are arranged along the rotational direction of the screws, and the moisture is discharged to the outside through a gap between the blade members. The blade member is a longitudinal member having a square cross section. The shaft support portion for supporting the blade members is arranged in an arc along the outer periphery of the screw as viewed from the axial direction of the dehydrating cylinder.

本発明による二軸押出機用脱水装置は、以上のように構成されているため、次のような効果を得ることができる。
すなわち、両側部に開口を有する脱水シリンダと、前記脱水シリンダ内に設けられ一対のスクリュを回転自在に保持するためのシリンダ孔と、前記各開口の外側に軸支して設けられると共に互いに重なり合う状態で配設された複数の羽根部材と、を備え、前記各スクリュが回転して水分を含んだ合成樹脂原料を下流側へ搬送する際に、前記各羽根部材は前記各スクリュの回転方向に沿って整列し、前記各羽根部材の間の隙間を経て前記水分が外部へ排出される構成としたことにより、スクリュ及び樹脂原料の動きによって各羽根部材が動くため、各羽根部材間の隙間は常に隙間が狭まる方向に動き、水分の排水が確実に行われると共に、隙間内での樹脂の目詰まりが防止され、交換時間を大幅に延長することができる。
また、前記羽根部材は、横断面四角状の長手部材をなすことにより、スクリュの回転方向に沿って整列かつ重なり合い、予め決められた隙間を保つことができる。
また、前記各羽根部材を軸支するための軸支部は、前記脱水シリンダの軸方向からみて前記スクリュの外周に沿って弧状に配設されていることにより、各羽根部材の各先端部をスクリュ及び樹脂材料の外周面に接する状態で整列させることができ、水分の排水が容易となる。
また、スクリュの回転及び樹脂材料の搬送時に、各羽根部材が軸支部を中心としてわずかに回動するため、搬送時の合成樹脂原料の樹脂圧が各羽根部材にかかると隙間が狭まるため、従来のような目詰まりが起こりにくくなる。また、隙間に入り込んだ樹脂材料は、各羽根部材がスクリュの回転方向にならっているため、一旦隙間に入っても元に戻りやすく、目詰まり防止に効果的である。 Since the dehydrating apparatus for a twin-screw extruder according to the present invention is configured as described above, the following effects can be obtained.
That is, a dewatering cylinder having openings on both sides, a cylinder hole provided in the dewatering cylinder for rotatably holding a pair of screws, and a state where the dewatering cylinder is pivotally supported outside each opening and overlaps each other A plurality of blade members disposed at the time when each screw rotates and conveys moisture-containing synthetic resin raw material to the downstream side, each blade member follows the rotation direction of each screw. Since the moisture is discharged to the outside through the gaps between the blade members, the blade members move due to the movement of the screw and the resin raw material. The gap moves in a narrowing direction, and water is drained reliably, and clogging of the resin in the gap is prevented, and the replacement time can be greatly extended.
Moreover, the said blade member can align and overlap along the rotation direction of a screw, and can maintain the predetermined clearance gap by making a cross-sectional square-shaped longitudinal member.
Further, the shaft support portion for supporting each blade member is arranged in an arc shape along the outer periphery of the screw as viewed from the axial direction of the dehydrating cylinder, so that each tip portion of each blade member is screwed. And it can align in the state which touches the outer peripheral surface of a resin material, and drainage of a water | moisture content becomes easy.
In addition, since each blade member rotates slightly around the shaft support during screw rotation and resin material conveyance, the gap is narrowed when the resin pressure of the synthetic resin material during conveyance is applied to each blade member. Such clogging is less likely to occur. Further, the resin material that has entered the gap is easy to return to the original state even if it has entered the gap because each blade member is aligned with the direction of rotation of the screw, which is effective in preventing clogging.

本発明による二軸押出機用脱水装置を示す横断面図である。It is a cross-sectional view showing a dehydrating apparatus for a twin screw extruder according to the present invention. 図１の各スクリュが異方向内回り回転の場合を示す構成図である。It is a block diagram which shows the case where each screw of FIG. 従来及び本発明で用いるスクリュ式二軸押出機を示す構成図である。It is a block diagram which shows the screw type twin-screw extruder used by the past and this invention. 図３の脱水シリンダを示す拡大詳細図である。FIG. 4 is an enlarged detail view showing the dewatering cylinder of FIG. 3. 図４のスクリーン部分を示す拡大図である。It is an enlarged view which shows the screen part of FIG. 図５のパンチメタルにおける水分と合成樹脂原料の排出状況を示す説明図である。It is explanatory drawing which shows the discharge | emission condition of the water | moisture content in the punch metal of FIG. 5, and a synthetic resin raw material. 脱水シリンダの他の従来例を示す側面図である。It is a side view which shows the other conventional example of a dehydration cylinder. 図７の軸方向からみた正面図である。It is the front view seen from the axial direction of FIG. 図７のスクリーンの一部を示す拡大図である。It is an enlarged view which shows a part of screen of FIG.

本発明は、脱水シリンダの開口の外側に回動自在に設けられた複数の羽根部材をスクリュの回転方向に沿って整列させ、各羽根部材間の隙間から水分を外部に排出するようにした二軸押出機用脱水装置を提供することを目的とする。   According to the present invention, a plurality of blade members provided rotatably outside the opening of the dehydrating cylinder are aligned along the rotational direction of the screw, and moisture is discharged to the outside through a gap between the blade members. An object of the present invention is to provide a dehydrator for a shaft extruder.

以下、図面と共に本発明による二軸押出機用脱水装置の好適な実施の形態について説明する。
尚、従来例と同一又は同等部分については、同一符号を用いて説明すると共に、図３のスクリュ式二軸押出機２０の構成を本発明にて援用するものとする。
図１において符号１で示されるものは、図３のスクリュ式二軸押出機２０のシリンダ２１の一部を構成する脱水シリンダであり、この脱水シリンダ１のシリンダ孔５内には二軸を構成するために二軸のスクリュ３０が互いに並列状態で回転自在に配設されている。 Hereinafter, preferred embodiments of a dehydrating apparatus for a twin-screw extruder according to the present invention will be described with reference to the drawings.
In addition, while using the same code | symbol as it demonstrates about the part which is the same as that of a prior art example, the structure of the screw type twin-screw extruder 20 of FIG. 3 shall be used by this invention.
What is indicated by reference numeral 1 in FIG. 1 is a dewatering cylinder constituting a part of the cylinder 21 of the screw type twin screw extruder 20 of FIG. 3. For this purpose, the biaxial screws 30 are rotatably arranged in parallel with each other.

前記脱水シリンダ１の両側部に設けられた各開口３２の外側には、保持部材３３が配設され、前記各保持部材３３の外部側には前記開口３２と連通する出口孔３５が形成されている。   A holding member 33 is disposed outside each opening 32 provided on both sides of the dehydrating cylinder 1, and an outlet hole 35 communicating with the opening 32 is formed on the outside of each holding member 33. Yes.

前記各出口孔３５側には、前記出口孔３５を塞ぐような位置に脱水シリンダ１の軸方向に沿って軸を揃えた状態で複数の軸支部３６が設けられ、各軸支部３６は所定間隔でかつ上下方向に沿って配設されている。   On each outlet hole 35 side, a plurality of shaft support portions 36 are provided in a state where the shafts are aligned along the axial direction of the dehydrating cylinder 1 at positions where the outlet holes 35 are closed. And arranged in the vertical direction.

前記各軸支部３６は、前記脱水シリンダ１の軸方向（Ａ）（図３）からみて前記スクリュ３０の外周に沿って弧状に配設され、各軸支部３６には、羽根部材３１が各軸支部３６によって左右方向へ回動自在に軸支されている。
前記各羽根部材３１は、前記軸方向Ａからみて横断面四角状の長手部材をなし、その一部には鋭角部３１ａが少なくとも１個形成されている。
前記鋭角部３１ａは、図１の軸方向Ａ（図３）に沿って板状に延長され前記脱水シリンダ１の開口３２が閉じるように形成されている。
前記各羽根部材３１は、前記脱水シリンダ１の各開口３２に各々４枚ずつ設けられている。 Each of the shaft support portions 36 is disposed in an arc shape along the outer periphery of the screw 30 as viewed from the axial direction (A) of the dehydrating cylinder 1 (FIG. 3). The support portion 36 is pivotally supported so as to be rotatable in the left-right direction.
Each blade member 31 is a longitudinal member having a square cross section when viewed from the axial direction A, and at least one acute angle portion 31a is formed in a part thereof.
The acute angle portion 31a is formed in a plate shape along the axial direction A (FIG. 3) of FIG. 1 so that the opening 32 of the dehydrating cylinder 1 is closed.
Four blade members 31 are provided in each opening 32 of the dehydrating cylinder 1.

前記脱水シリンダ１の各スクリュ３０の回転方向Ｂは、図１内の矢印で示されるように、左回転に沿って同方向に回転する二軸構成であるため、図１でみて、右側に位置する各羽根部材３１は、スクリュ３０の回転方向Ｂに沿って整列すると共に回転するスクリュ３０の外周及び下流へ搬送される合成樹脂原料５０の外周に接触するように構成されている。   The rotation direction B of each screw 30 of the dehydrating cylinder 1 is a biaxial configuration that rotates in the same direction along the left rotation as indicated by the arrow in FIG. Each of the blade members 31 that are aligned with each other along the rotational direction B of the screw 30 is configured to contact the outer periphery of the rotating screw 30 and the outer periphery of the synthetic resin raw material 50 that is conveyed downstream.

また、前述の各羽根部材３１間の隙間４０は水分は通すが各隙間４０に入り込んだ合成樹脂原料は外部に漏れることのないようにするためのシールの役目をなしている。   In addition, the gap 40 between the blade members 31 described above serves as a seal to prevent moisture from passing through but the synthetic resin material that has entered the gap 40 from leaking outside.

また、図１の前記脱水シリンダ１の左側に位置する各羽根部材３１の向きは、前述の右側の各羽根部材３１の配列と異なり、隙間４０の方向が逆となるように回転方向Ｂに沿って整列すると共に、各羽根部材３１は回転するスクリュ３０の外周及び下流へ搬送される合成樹脂原料５０の外周に接触するように構成されている。   Also, the direction of each blade member 31 located on the left side of the dehydrating cylinder 1 in FIG. 1 is different from the arrangement of each blade member 31 on the right side, and the rotation direction B is such that the direction of the gap 40 is reversed. The blade members 31 are configured to come into contact with the outer periphery of the rotating screw 30 and the outer periphery of the synthetic resin raw material 50 conveyed downstream.

前記各羽根部材３１は、各軸支部３６を介して軸支されているため、各スクリュ３０が回転すると共に合成樹脂原料５０が軸方向に沿って搬送される際に、各羽根部材３１がスクリュ３０及び合成樹脂原料５０の外周に接触して各羽根部材３１が左右にわずかずつカタカタと回動するため、各羽根部材３１間の隙間４０の状態が閉状態又は開状態のようにわずかに変化するように構成されている。   Since each blade member 31 is pivotally supported via each shaft support portion 36, each blade member 31 is screwed when each screw 30 rotates and the synthetic resin material 50 is conveyed along the axial direction. 30 and the outer periphery of the synthetic resin raw material 50, each blade member 31 is slightly rotated to the left and right, and the state of the gap 40 between the blade members 31 changes slightly as in a closed state or an open state. Is configured to do.

次に、前述の図１で示される本発明の第１形態において、前述の図３で示されるホッパシリンダ１Ａに供給された合成樹脂原料５０は、シリンダ２１内で混練・溶融されつつ下流側へ搬送され、前記脱水シリンダ１に達した状態となると、図１に示される脱水シリンダ１において、同方向に回転する各スクリュ３０の外周及び搬送される合成樹脂原料５０の外周に各羽根部材３１が接触しているため、溶融した合成樹脂原料５０中に含まれる水分は、図１の矢印Ｃで示されるように、各羽根部材３１間の隙間４０を経て出口孔３５から外部に排出される。   Next, in the first embodiment of the present invention shown in FIG. 1 described above, the synthetic resin raw material 50 supplied to the hopper cylinder 1A shown in FIG. 3 is mixed and melted in the cylinder 21 to the downstream side. In the dewatering cylinder 1 shown in FIG. 1, each blade member 31 is placed on the outer periphery of each screw 30 that rotates in the same direction and the outer periphery of the synthetic resin raw material 50 that is conveyed. Since they are in contact with each other, the moisture contained in the molten synthetic resin raw material 50 is discharged to the outside from the outlet holes 35 through the gaps 40 between the blade members 31 as indicated by an arrow C in FIG.

前述の隙間４０を介して水分を排出する際に、前記隙間４０の形状が各羽根部材３１の回動によってわずかに変化するため、この隙間４０を経て水分が外部に排出されるが、この合成樹脂原料５０及びその細片は各羽根部材３１の隙間４０から外部への漏れは防止される。
また、前述の場合、各羽根部材３１がスクリュ３０の回転方向Ｂに沿って整列しているため、スクリュ３０の回転に応じて各羽根部材３１の隙間４０が狭まることになり、稼動中における合成樹脂原料の隙間４０への目詰まりを防止することができる。 When the moisture is discharged through the gap 40, the shape of the gap 40 slightly changes due to the rotation of each blade member 31, so that the moisture is discharged to the outside through the gap 40. The resin raw material 50 and its strips are prevented from leaking from the gaps 40 of the blade members 31 to the outside.
In the above-described case, since the blade members 31 are aligned along the rotation direction B of the screw 30, the gap 40 between the blade members 31 is narrowed according to the rotation of the screw 30. The clogging of the resin raw material into the gap 40 can be prevented.

また、前述の図１の構成は、各スクリュ３０が共に同方向に回転するように構成されていたが、図２に示される構成は、各スクリュ３０が互いに異なる回転方向Ｂで互いに内側に向けて回転する異方向内回り回転の構成における各羽根部材３１の配設状態を示しているが、脱水シリンダ１の左右一対の各羽根部材３１は全て上向きとなっていると共に、前記シリンダ孔５の中心Ｐからみると左右対象状態に構成されている。
従って、図２の構成の脱水シリンダ１において各スクリュ３０を互いに逆方向に回転させた状態で、合成樹脂原料５０を溶融・混練して脱水する場合、前述の図１の脱水シリンダ１と同様の脱水動作を行うことができる。 1 is configured such that each screw 30 rotates in the same direction. However, the configuration illustrated in FIG. 2 is configured such that each screw 30 faces inward in different rotation directions B. Although the arrangement state of each blade member 31 in the configuration of inward rotation rotating in a different direction is shown, the pair of left and right blade members 31 of the dehydrating cylinder 1 are all facing upward, and the center of the cylinder hole 5 From the viewpoint of P, the left and right target states are configured.
Therefore, when the synthetic resin raw material 50 is melted and kneaded and dehydrated in the dewatering cylinder 1 having the configuration shown in FIG. Dehydration can be performed.

本発明による二軸押出機用脱水装置は、脱水シリンダの開口に設けられたフランジ部材の各羽根部材の間の隙間を経て合成樹脂原料の水分を脱水すると共に、各羽根部材間の隙間が狭まることにより、合成樹脂原料の隙間での詰まりを防止することができ連続運転が可能となる。   The dehydrating apparatus for a twin-screw extruder according to the present invention dehydrates the moisture of the synthetic resin raw material through the gap between the blade members of the flange member provided at the opening of the dewatering cylinder, and the gap between the blade members is narrowed. Thus, clogging in the gap between the synthetic resin raw materials can be prevented, and continuous operation is possible.

１ 脱水シリンダ
１Ａ ホッパシリンダ
２１ シリンダ
３０ スクリュ
３１ 羽根部材
３１ａ 鋭角部
３２ 開口
３３ 保持部材
３５ 出口孔
３６ 軸支部
４０ 隙間
５０ 樹脂原料 DESCRIPTION OF SYMBOLS 1 Dehydration cylinder 1A Hopper cylinder 21 Cylinder 30 Screw 31 Blade member 31a Acute angle part 32 Opening 33 Holding member 35 Outlet hole 36 Shaft support part 40 Crevice 50 Resin raw material

Claims (3)

両側部に開口(32)を有する脱水シリンダ(1)と、前記脱水シリンダ(1)内に設けられ一対のスクリュ(30)を回転自在に保持するためのシリンダ孔(5)と、前記各開口(32)の外側に軸支して設けられると共に互いに重なり合う状態で配設された複数の羽根部材(31)と、を備え、
前記各スクリュ(30)が回転して水分を含んだ合成樹脂原料(50)を下流側へ搬送する際に、前記各羽根部材(31)は前記各スクリュ(30)の回転方向(B)に沿って整列し、前記各羽根部材(31)の間の隙間(40)を経て前記水分が外部へ排出される構成としたことを特徴とする二軸押出機用脱水装置。 A dehydrating cylinder (1) having openings (32) on both sides, a cylinder hole (5) provided in the dehydrating cylinder (1) for rotatably holding a pair of screws (30), and each opening A plurality of blade members (31) provided to be pivotally supported on the outside of (32) and arranged to overlap each other, and
When each screw (30) rotates and transports moisture-containing synthetic resin material (50) to the downstream side, each blade member (31) is moved in the rotational direction (B) of each screw (30). A dehydrating apparatus for a twin-screw extruder, characterized in that the moisture is discharged to the outside through a gap (40) between the blade members (31). 前記羽根部材(31)は、横断面四角状の長手部材よりなることを特徴とする請求項１記載の二軸押出機用脱水装置。   The dehydrating apparatus for a twin-screw extruder according to claim 1, wherein the blade member (31) is a longitudinal member having a square cross section. 前記各羽根部材(31)を軸支するための軸支部(36)は、前記脱水シリンダ(1)の軸方向(A)からみて前記スクリュ(30)の外周に沿って弧状に配設されていることを特徴とする請求項１又は２に記載の二軸押出機用脱水装置。   A shaft support portion (36) for supporting each blade member (31) is disposed in an arc along the outer periphery of the screw (30) as viewed from the axial direction (A) of the dewatering cylinder (1). The dehydrating apparatus for a twin-screw extruder according to claim 1 or 2.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014180765A (en) * 2013-03-18 2014-09-29 Tokyo Printing Ink Mfg Co Ltd Dehydrator in twin-screw extruder

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JPS60223698A (en) * 1984-04-20 1985-11-08 Mitsubishi Kakoki Kaisha Ltd Screw press type dehydrator for sludge
JPH09277256A (en) * 1996-04-08 1997-10-28 Japan Synthetic Rubber Co Ltd Rubber dehydration apparatus
JPH10217311A (en) * 1997-02-07 1998-08-18 Toshiba Mach Co Ltd Assembly type dewatering barrel
JP2002086444A (en) * 2000-09-19 2002-03-26 Nippon Zeon Co Ltd Elastomer dehydration device and dehydration method
JP2003039530A (en) * 2001-07-30 2003-02-13 Japan Steel Works Ltd:The Dewatering cylinder for extruder
JP2003039529A (en) * 2001-07-30 2003-02-13 Japan Steel Works Ltd:The Dewatering cylinder for extruder
WO2011142434A1 (en) * 2010-05-14 2011-11-17 株式会社日本製鋼所 Granulation method and granulation device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60223698A (en) * 1984-04-20 1985-11-08 Mitsubishi Kakoki Kaisha Ltd Screw press type dehydrator for sludge
JPH09277256A (en) * 1996-04-08 1997-10-28 Japan Synthetic Rubber Co Ltd Rubber dehydration apparatus
JPH10217311A (en) * 1997-02-07 1998-08-18 Toshiba Mach Co Ltd Assembly type dewatering barrel
JP2002086444A (en) * 2000-09-19 2002-03-26 Nippon Zeon Co Ltd Elastomer dehydration device and dehydration method
JP2003039530A (en) * 2001-07-30 2003-02-13 Japan Steel Works Ltd:The Dewatering cylinder for extruder
JP2003039529A (en) * 2001-07-30 2003-02-13 Japan Steel Works Ltd:The Dewatering cylinder for extruder
WO2011142434A1 (en) * 2010-05-14 2011-11-17 株式会社日本製鋼所 Granulation method and granulation device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014180765A (en) * 2013-03-18 2014-09-29 Tokyo Printing Ink Mfg Co Ltd Dehydrator in twin-screw extruder

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