JPH0357621A - Vented stuffing device - Google Patents

Abstract

PURPOSE:To reduce the deflection of shafts and consequently the leakage of sealing liquid and prevent the sealing properties of the device concerned due to the intrusion of polymer and the like from deteriorating by a method wherein collar-like gas barrier discs, labyrinth packagings, two mechanical seals, which are provided so as to be axially shifted to each other, and bearings, which support each mechanical seal in front and in rear, are provided.. CONSTITUTION:On respective shaftings 31b and 32b, gas barrier discs 33 and 34, labyrinth packings 35 and 36 and mechanical seals 37 and 38 are mounted. Screws 31 and 32 are supported by bearings 39 and 40 at two positions before and after the mechanical seals 37 and 38. The gas barrier discs 33 and 34 are collars in shape and make it hard for gas and polymer to enter the mechanical seals 37 and 38 and the labyrinth packings 35 and 36. In the labyrinth packings 35 and 36, water jackets for introducing cooling water are respectively provided on their outside surface and labyrinth grooves 43 and 44, the directions of rota tion of which are opposite to those of the screws, are provided on their inner surfaces so as to liquefy gasified solvent by cooling and, at the same time, to push back polymer by means of the labyrinth grooves 43 and 44.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、同方向回転の２軸ベントスタッファ装置に関
する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a co-rotating two-axis vent stuffer device.

く従来装置〉 第２図によシこの種の装置について説明すると、ペント
スタッファ１１は押出機１２の材料供給口１３の下流に
設けられ、材料供給口１３から供給された材料を加熱、
溶融し、先端の開口部１４から吐出するｌ７ 過程において、材料中に含まれる溶剤を配管縛から脱気
するとともに、溶剤と一緒に押出機１２円から上昇して
来た材料を強制的に押出機１２内へ押戻すものである。Conventional Apparatus> To explain this type of apparatus as shown in FIG.
In the process of melting and discharging from the opening 14 at the tip, the solvent contained in the material is degassed from the pipe tie, and the material that has risen from the extruder 12 together with the solvent is forcibly extruded. This is to push it back into the machine 12.

従って、前記ペントスタッファ１１は常に押出機１２内
に確実に材料を押戻すため、同方向回転の２軸スクリエ
１５釦よび１６を用いた装置が広く使用されている。Therefore, in order for the pen stuffer 11 to always reliably push the material back into the extruder 12, a device using two screw scriers 15 and 16 that rotate in the same direction is widely used.

そして、配管１７からの溶剤の脱気に当っては、効率良
く脱気が行われるよう、スクリュ１５および１６の支承
部には夫々ウィルソンシール又はオイルシール１８釦よ
び１９が設けてペントスタッファ１１内部の気密性を良
くしでいる。In order to efficiently degas the solvent from the pipe 17, Wilson seals or oil seals 18 and 19 are provided at the support portions of the screws 15 and 16, respectively. Good internal airtightness.

１た、第３図のようにベントスタッファ２１の気密をよ
り良くするため、前述のウィルソンシール等を用いた装
置よシシールが充分行われるメカニカルシール２２およ
び２３を使用した装置が有る。In addition, as shown in FIG. 3, in order to improve the airtightness of the vent stuffer 21, there are devices that use the aforementioned Wilson seal and the like, as well as devices that use mechanical seals 22 and 23 that provide sufficient sealing.

この装置はスクリュ２４および２５の軸間Ｃが狭く、メ
カニカルシール２２および２３を両スクリュ２４および
２５の同位置に取付ると外径寸法が大きく、互いに干渉
するため、互いに前後させて取付てある。In this device, the distance C between the shafts of the screws 24 and 25 is narrow, and if the mechanical seals 22 and 23 are installed at the same position on both screws 24 and 25, the outer diameter size is large and they interfere with each other, so they are installed in front and behind each other. .

く発明が解決しようとする課題〉 しかしながら、従来装置は、前者にあってはシール性が
不充分であること、後者にあっては２個のメカニカルシ
ールを互いに前後させて取付るため、軸部２４ａおよび
２５ａが長〈なシ、スクリュの支承部である軸受２６お
よび２７もねじ部２４ｂ　＆よび２５ｂから隔れるため
、スクリュ２４釦よび２５の振れが大きくなりメカニカ
ルシール２２釦よび２３が壊れ、シール液が洩れやすく
なる。−１た成形機側から溶剤と一緒に出て来たボリマ
もメカニカルシール内に入シ込み、シール性を悪くして
いた。Problems to be Solved by the Invention> However, in the former case, the conventional device has insufficient sealing performance, and in the latter case, two mechanical seals are installed one behind the other, so the shaft part Since 24a and 25a are long, the bearings 26 and 27, which are the supporting parts of the screws, are also separated from the threaded parts 24b and 25b, so the swing of the screws 24 and 25 becomes large, and the mechanical seals 22 and 23 are broken. Seal fluid leaks easily. -1 The volima that came out of the molding machine along with the solvent also entered the mechanical seal, worsening the sealing performance.

本発明の目的は、シール性の良いメカニカルシールを用
い、しかも軸の振れが々く、メカニカルシールのシール
液が洩れないような同方向回転の２軸ベントスタノファ
装置を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a two-shaft vent stanofer device that uses a mechanical seal with good sealing performance, and that rotates in the same direction so that the shaft does not run out easily and the sealing liquid of the mechanical seal does not leak.

〈課題を解決するための手段〉 前述の目的を達成するため、本発明はねじ部とその後部
の軸部から或るスクリュを用いた溶剤を含んだポリマの
押出或形に用いる同方向回転の２軸ペントスタッファ装
置にお・いて、前記２軸スクリュの軸部の夫々にねじ部
側から順に、軸に沿ってねじ部側から出て来たガス等の
方向を変えるカラー状のガス遮断用円盤と、外周部にガ
ス等を液化するための冷却水導入用のジャケノトを有し
、内径部にポリマ排出用のラビリンスを設けたラビリン
スハノキン＼軸方向に互いに前後させて設けを ルシールを前後で支える軸受を設けたことを特徴とする
２軸ペントスタノファ装置とした。<Means for Solving the Problems> In order to achieve the above-mentioned object, the present invention provides a co-rotating motor for extruding a polymer containing a solvent using a certain screw from a threaded part and a rear shaft part thereof. In a two-shaft pen stuffer device, a collar-shaped gas cutoff is installed in each of the shaft parts of the two-shaft screw in order from the threaded part side to change the direction of gas etc. coming out from the threaded part side along the shaft. Labyrinth Hanokin has a cooling disk on the outer periphery, a jacket for introducing cooling water to liquefy gas, etc., and a labyrinth for discharging polymer on the inner diameter. This is a two-shaft pentostanofer device characterized by the provision of bearings for support at the front and rear.

く作　用〉 成形機側から出て来る溶剤やポリマーはガス遮断用円盤
と、ラビリンスパッキンによシメカニカルシールヘ入り
込！ない。さらに、スクリュはメカニカルシールの前後
の２個所で軸受により支承されているので軸の振れが防
止される。Function: Solvents and polymers coming out of the molding machine enter the mechanical seal through the gas-blocking disc and labyrinth packing! do not have. Furthermore, since the screw is supported by bearings at two locations, before and after the mechanical seal, vibration of the shaft is prevented.

く実施例〉 次に第１図によｂ本発明の１実施例を説明すると、ペン
トスタッ７ア装置３ｏは同方向回転の２軸スクリ：Ｌ３
１および３２が図示してない駆動装置により回転駆動す
るようになっている。前記スクリュ３１および３２の夫
々は、ねじ部３１ａ，３２ａおよび軸部３ｌｂ，３２ｂ
から構成されておシ、軸部３ｌｂおよび３２ｂはねじ部
から順にガス遮断用゜円盤３３．３４、次いでラぐリン
スパッキン３５．３６　＆よびメカニカルパッキン３７
．３８が取付られて釦ｂ１軸受３９＄−よび４０が前記
メカニカルシール３７釦よび３８の前後の２個所で前記
スクリュ３１シよび３２を支承している。Embodiment> Next, an embodiment of the present invention will be described with reference to FIG.
1 and 32 are rotated by a drive device (not shown). The screws 31 and 32 each have threaded portions 31a, 32a and shaft portions 3lb, 32b.
The shaft parts 3lb and 32b are, in order from the threaded part, gas-blocking disks 33, 34, lug rinse packings 35, 36 & mechanical packings 37.
．． 38 is attached, and button b1 bearings 39 and 40 support the screws 31 and 32 at two locations before and after the mechanical seals 37 and 38, respectively.

前記ガス遮断用円盤３３および３４はカラー状でねピリ
ンスパッキン３５　．　３６にガスやポリマーが入り憎
いようにしている。前記ラピリンスバッキ／３５および
３６は外側面に冷却水の導入用のジャケットが、軸部３
ｌｂ，３２ｂに接する内径面にはスクリュ回に干渉しな
いよう前後して取付であり、そのため軸部３ｌｂ，３２
ｂは比較的長くなるが、前記ガス遮断用円盤３３．３４
とラビリンスパノキン３５，３６によシガスやポリマの
侵入が防止される。The gas cutoff disks 33 and 34 are collar-shaped and have a pilin packing 35. Gas and polymer get into 36 and make it unpleasant. The lapirin bags/35 and 36 have a jacket for introducing cooling water on the outer surface of the shaft portion 3.
The inner diameter surface in contact with lb and 32b is installed back and forth so as not to interfere with the screw rotation, so the shaft parts 3lb and 32
b is relatively long, but the gas cutoff disk 33.34
The labyrinth spanokins 35 and 36 prevent the intrusion of gas and polymer.

は前述のようにスクリュ回転と反対の溝で侵入するボリ
マーをスクリュ部側へ押戻しても良いが、スクリュ回転
と同方向のラピリンス溝により、ラビリンスパッキンを
通過させ、同パッキンの後側で外部に排出するように成
すことも可能である。As mentioned above, the invading polymer may be pushed back to the screw side by the groove opposite to the screw rotation, but the lapirin groove in the same direction as the screw rotation allows it to pass through the labyrinth packing, and the polymer is pushed back to the outside at the rear side of the packing. It is also possible to discharge it to

４１シよび４２は溶剤のガスを排出する配管である。41 and 42 are pipes for discharging solvent gas.

く発明の効果〉 前述のようにメカニカルシールは、ガス遮断用円盤フ−
よびラビリンスパノキンによりガスやボリマーの侵入を
防止され、メカ　ニカルシールの前後位置で軸受がスク
リュを支承しているのでスクリュの振れが少く、当初に
掲げた振れによる封止液の洩れという欠点、ポリマー等
の侵入によるシール性の劣化等が防止出来る。Effects of the Invention> As mentioned above, the mechanical seal
The screw and labyrinth spanokin prevent gas and polymer from entering, and since the bearings support the screw at the front and back positions of the mechanical seal, there is little runout of the screw. It is possible to prevent deterioration of sealing performance due to the intrusion of foreign substances.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明による１実施例を示す２軸ベントスタッ
ファ装置の図。第２図は従来装置の図でシールにウィル
ソンシールを使用した例を示す図。 第３図はその他の従来装置の図で、シールにメカニカル
シールを用いた例を示す図。 ３１．３２−・・スクリュ、３１ａ．３２ａ−・・ねじ
部、３１ｂ，３２ｂ・・・軸部、３３　．３４・・・ガ
ス遮断用円盤、３５．３６・・・ラビリンスハノキン、
３７．３８・・・メカニカルシール、３９．４０・・・
軸受。FIG. 1 is a diagram of a two-shaft vent stuffer device showing one embodiment of the present invention. FIG. 2 is a diagram of a conventional device, showing an example in which a Wilson seal is used as a seal. FIG. 3 is a diagram of another conventional device, showing an example in which a mechanical seal is used for the seal. 31.32-...screw, 31a. 32a--screw part, 31b, 32b...shaft part, 33. 34... Gas cutoff disk, 35.36... Labyrinth Hanokin,
37.38...Mechanical seal, 39.40...
bearing.

Claims (1)

【特許請求の範囲】[Claims] ねじ部とその後部の軸部から成るスクリュを用いた溶剤
を含んだポリマの押出成形に用いる同方向回転の２軸ベ
ントスタッファ装置において、前記２軸スクリュの軸部
の夫々にねじ部側から順に、軸に沿ってねじ部側から出
て来たガス等の方向を変えるカラー状のガス遮断用円盤
と、外周部にガス等を液化する冷却水導入用のジャケッ
トを有し、内径部にポリマ排出用のラビリンス溝を設け
たラビリンスパッキンと、軸方向に互いに前後させて設
けた２個のメカニカルシールと、前記２個のメカニカル
シールを前後で支える軸受とを設けたことを特徴とする
２軸ベントスタッファ装置。In a co-rotating twin-screw vent stuffer device used for extrusion molding of a polymer containing a solvent using a screw consisting of a threaded portion and a shaft portion at the rear thereof, a screw is inserted into each of the shaft portions of the twin screw from the threaded portion side. In order, it has a collar-shaped gas cutoff disk that changes the direction of gas etc. coming out from the threaded part side along the axis, a jacket for introducing cooling water to liquefy gas etc. on the outer periphery, and a A labyrinth packing provided with a labyrinth groove for discharging polymer, two mechanical seals arranged one behind the other in the axial direction, and a bearing supporting the two mechanical seals front and rear. Axial vent stuffer device.