JP3680887B2 - Assembled dewatering barrel - Google Patents

Assembled dewatering barrel Download PDF

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Publication number
JP3680887B2
JP3680887B2 JP03996297A JP3996297A JP3680887B2 JP 3680887 B2 JP3680887 B2 JP 3680887B2 JP 03996297 A JP03996297 A JP 03996297A JP 3996297 A JP3996297 A JP 3996297A JP 3680887 B2 JP3680887 B2 JP 3680887B2
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Japan
Prior art keywords
barrel
dewatering
screen
dewatering barrel
barrel member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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JP03996297A
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Japanese (ja)
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JPH10217311A (en
Inventor
三十司 長谷川
昭美 小林
秀典 長房
▲ヤスオ▼ 土屋
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Shibaura Machine Co Ltd
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Toshiba Machine Co Ltd
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Priority to JP03996297A priority Critical patent/JP3680887B2/en
Publication of JPH10217311A publication Critical patent/JPH10217311A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/76—Venting, drying means; Degassing means
    • B29C48/761—Venting, drying means; Degassing means the vented material being in liquid form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/535—Screws with thread pitch varying along the longitudinal axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/55—Screws having reverse-feeding elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/57—Screws provided with kneading disc-like elements, e.g. with oval-shaped elements

Description

【産業上の利用分野】
【０００１】
本発明は、２軸押出機の複数個の分割バレルを一体的に連結したバレルに係わり、特に同バレルの構成部材である脱水バレルに関する。
【０００２】
【従来技術】
例えば図３および図４に示すような複数個の分割されたバレル用の構成部材である各種バレル部材を一体的に連結したバレルを有する２軸押出機により水分を多量に含んだポリマを押出す方法は良く知られており、その方法について説明する。１は２軸押出機であって、供給口２を有するフィードバレル３と、同フィードバレル３の下流にあって前記供給口２から供給された高含水ポリマから水を排出する排出口４を塞ぐとともに含水ポリマから漉された水分を主な排出物として機体外へ排出するスクリーン１４を設けた脱水バレル５と、を備えている。さらに同脱水バレル５の下流にあり、脱水バレル５で脱水しきれなかった水分および揮発分等（以下これらの水分および揮発分等を合せて水分等という）を抜くためベント口６を設けたベントバレル７と、複数個の標準バレル８とを一体的に連結したバレル９と、を備えている。さらにまた、前記供給口２付近はネジリードが大きく、排水口４とベント口６の間には上流から送られてくる材料に抵抗を与え、材料からの水分等を搾出するためのニーディングデスク１０の動作およびベンチレイションをより効果的にするための逆リードのスクリュエレメント１１を設けた互いに噛合う２軸スクリュー１２が回転自在に挿入されており、２軸押出機１のバレルは、この２軸スクリュー１２と、上述の分割された各種バレルを一体的に連結して組立てて長くしたバレルと、を有して構成される。
【０００３】
従って、供給口２から２軸押出機に供給された高含水ポリマはスクリュ１２の回転による剪断熱および図示してないバレル９の外側面に設けたヒータ等の加熱装置からの熱により溶融されながら前方（図中左方向）へ送られるとともに、脱水バレル５のスクリーン１４を介して脱水されるとともに、ベント口６からは脱水バレル５で脱水し切れなかった水分等が抜かれて最終的に低含水ポリマとして吐出口１３から押出される。
【０００４】
【発明が解決しょうとする課題】
しかしながら、脱水バレル５は水分等で排出口４やスクリーン１４が錆たり腐食したりすると脱水バレル５はバレル自身を交換しなければならなかったので、非常に高価なものとなるばかりでなく作業も面倒であった。またスクリーン１４の場合は脱水バレル５の排出口４にスクリーン１４の取付けのための位置決めがなく、スクリュの挿入されたバレル５内径面とスクリーン１４内径面の接合部（”イ”部）に喰違いができ、不都合であった。
【０００５】
本発明の目的は前述のような脱水バレルを交換の際は、構成部材の交換で済むように安価で、しかも作業が容易にできる組立式とするとともに、組立の際にスクリンの位置決めがなく、スクリュの挿入されたバレル内径面とスクリーン内径面が喰違うという不都合さを取除くことを目的とした脱水バレルを提供することにある。
【０００６】
【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、高含水ポリマを受け入れるフィードバレル部材と、前記フィードバレル部材で受入れた高含水ポリマから脱水した水を排水する排水口を設けた脱水バレル部材と、前記フィードバレル部材と前記脱水バレル部材の他、複数個の分割されている各種のバレル部材を一体的に連結して組み立て、高含水ポリマを供給し溶融して低含水ポリマとして押出す２軸押出機の組立式脱水バレルにおいて、前記脱水バレル部材は、前記排水口を塞ぎ、かつ溶融された高含水ポリマから水分および揮発分を漉して機体外へ排出するスクリーンと、このスクリーンの位置決め用の段付部を設けた脱水バレル本体と、同脱水バレル本体の軸方向の両端部から前記脱水バレル本体を挟むようにスペーサを介して前記脱水バレル本体越しにボルトで取付けた２枚の板と、を有して構成したことを特徴とする２軸押出機の組立式脱水バレル、とした。
【０００７】
【発明の実施の形態】
従来一体であった脱水バレルをバレル本体と、同バレル本体の軸方向の両端面にバレル本体を挟むようにして設けた２枚の板と、スペーサを介してバレル越しに前記２枚の板を連結したボルトと、バレル本体に設けた排出口にスクリーンの位置決め用段付部を設けた脱水バレルとした。
【０００８】
図１および図２により本発明の一実施形態例を説明すると、２０は、各種の分割されたバレル部材のうちの一種である脱水バレルでバレル本体２１とその軸方向の両端部に対峙して設けた２枚の板２２および２３は、四角のスペーサ２４を隔ててバレル本体２１越しにボルト２５により連結されている。前記バレル本体２１の排水口２６にはスクリーン２７が設けてあり、高含水ポリマより搾出された水分等をポリマを残して、水分等だけ機体外に出すようにしている。また、前記バレル本体２１の排水溝２６には図１の矢印Ｂで示すように、スクリーン２７の取付用の位置決めのための段付部が設けてある。この矢印Ｂで示した段付部は、図２のスクリーン２７に示される幅で左右方向に設けられ、このスクリーン２７は、同図に示されるスクリーン２７の４箇所のコーナー部の取付用の穴を使用し、バレル本体２１の排水口２６の空間でこの排水口２６を塞ぐように段付け部を利用して設置される。このような構成をとることにより、排水口２６の空間においてスクリーン２７の内側にある含水ポリマに存在する水分等のうち、水分は液体として、揮発分は気体として、このスクリーン２７を介して、このスクリーンを構成している狭量な隙間を通して漉しとられ、脱水バレル２０の外へ排出できる。
【０００９】
【発明の効果】
以上説明したような構成となっており、従来一体であった脱水バレルをバレル本体と、同バレル本体の両端面にバレル本体を挟むようにして設けた２枚の板と、スペーサを介してバレル越しに前記２枚の板を連結したボルトと、バレル本体に設けた排出口にスクリーンの位置決め用段付部を設けた脱水バレルとしたので、脱水バレルの損傷等で交換の際は，バレル本体だけ、或いは両端部の板等のように損傷した部材のみを交換すれば良く、簡単でしかも安価で交換が可能である。またスクリーンの取付用の位置決めに段付部が設けてあるので、スクリュの挿入されたバレル内径面とスクリーン内径面が喰違うという不都合さを取除くことができる。
【図面の簡単な説明】
【図１】本発明の１実施例を示す脱水バレルの正面図。
【図２】本発明の１実施例を示す図で、図１の側面図。
【図３】従来の複数個の分割バレルを一体的に連結したバレルを有する２軸押出機の説明図。
【図４】従来の説明図で、図３のＡ−Ａ断面拡大図。
【符号の説明】
２０ 脱水バレル
２１ バレル本体
２２、２３ 板
２４ スペーサ
２５ ボルト
２６ 排水口
２７ スクリーン[Industrial application fields]
[0001]
The present invention relates to a barrel integrally connected a plurality of divided barrels of twin-screw extruder, about the dewatering barrel in particular components of the barrel.
[0002]
[Prior art]
Extruding the moisture large amount inclusive polymer by a twin-screw extruder having a barrel integrally connected to various barrel member is a plurality components for split barrel, such as shown in FIG. 3 and FIG. 4, for example The method is well known and will be described. Reference numeral 1 denotes a twin-screw extruder, which closes a feed barrel 3 having a supply port 2 and a discharge port 4 which is downstream of the feed barrel 3 and discharges water from a high water content polymer supplied from the supply port 2. And a dehydrating barrel 5 provided with a screen 14 for discharging the moisture dripped from the water-containing polymer as a main discharge to the outside of the machine body . Further, a vent provided in the downstream of the dewatering barrel 5 and provided with a vent port 6 for removing moisture and volatile components that could not be dehydrated by the dewatering barrel 5 (hereinafter, these moisture and volatile components are combined). A barrel 7 and a barrel 9 integrally connecting a plurality of standard barrels 8 are provided. Furthermore, a screw lead is large in the vicinity of the supply port 2, and a kneading desk for resisting the material sent from the upstream between the drain port 4 and the vent port 6 and squeezing out moisture etc. from the material. A twin-screw 12 that meshes with each other and is provided with a reverse-lead screw element 11 for making the operation and ventilation more effective is inserted into the barrel of the twin-screw extruder 1. The shaft screw 12 is configured to have a long barrel that is assembled by integrally connecting the various barrels described above.
[0003]
Accordingly, the high water content polymer supplied from the supply port 2 to the twin-screw extruder is melted by shearing heat generated by the rotation of the screw 12 and heat from a heating device such as a heater provided on the outer surface of the barrel 9 (not shown). In addition to being sent forward (to the left in the figure) and dehydrated through the screen 14 of the dewatering barrel 5, moisture that has not been dehydrated by the dewatering barrel 5 is removed from the vent port 6, and finally the water content is low. It is extruded from the discharge port 13 as a polymer.
[0004]
[Problems to be solved by the invention]
However, if the dewatering barrel 5 is rusted or corroded due to moisture or the like, the dewatering barrel 5 has to be replaced. It was troublesome. Further, in the case of the screen 14, there is no positioning for attaching the screen 14 to the discharge port 4 of the dewatering barrel 5, and it bites into the joint portion (“A” portion) between the inner diameter surface of the barrel 5 into which the screw is inserted and the inner diameter surface of the screen 14. There was a difference and it was inconvenient.
[0005]
The object of the present invention is to replace the dehydrating barrel as described above with an assembly type that is inexpensive so that only the components need to be replaced and can be easily operated, and there is no positioning of the screen during assembly. An object of the present invention is to provide a dewatering barrel intended to eliminate the inconvenience that a barrel inner surface into which a screw is inserted is different from a screen inner surface.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention includes a feed barrel member that receives a high water content polymer, a dewatering barrel member that has a drain outlet for draining water dehydrated from the high water content polymer received by the feed barrel member, and the feed. In addition to the barrel member and the dewatering barrel member, a plurality of divided barrel members are integrally connected and assembled, a high water content polymer is supplied, melted and extruded as a low water content polymer. In the assembly-type dewatering barrel, the dewatering barrel member includes a screen that closes the drain and removes moisture and volatile components from the molten high water content polymer and discharges it outside the machine body, and a stepped portion for positioning the screen. A dehydrating barrel main body provided with a dewatering barrel main body through a spacer so as to sandwich the dehydrating barrel main body from both axial ends of the dehydrating barrel main body. And two and a plate mounted with bolts, prefabricated dehydration barrel of a twin-screw extruder, characterized by being configured with a, and the come.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The dehydrating barrel that was integrated in the past was connected to the barrel main body, two plates provided so as to sandwich the barrel main body between both end surfaces of the barrel main body in the axial direction, and the two plates were connected through the barrel via a spacer. A dewatering barrel having a bolt and a stepped portion for positioning the screen at a discharge port provided in the barrel body was obtained.
[0008]
Referring to FIGS. 1 and 2, one embodiment of the present invention will be described. Reference numeral 20 denotes a dewatering barrel which is a kind of various divided barrel members , facing the barrel body 21 and both axial ends thereof. The two plates 22 and 23 provided are connected by a bolt 25 across the barrel body 21 with a square spacer 24 therebetween. A screen 27 is provided at the drain outlet 26 of the barrel main body 21 so that the moisture extracted from the highly water-containing polymer is left out of the machine body while leaving the polymer. Further, the drainage groove 26 of the barrel body 21 is provided with a stepped portion for positioning for attaching the screen 27 as shown by an arrow B in FIG. The stepped portion indicated by the arrow B is provided in the left-right direction with the width shown in the screen 27 of FIG. 2, and the screen 27 has holes for mounting at the four corners of the screen 27 shown in FIG. Is installed using a stepped portion so as to block the drainage port 26 in the space of the drainage port 26 of the barrel main body 21. By adopting such a configuration, of the moisture present in the water-containing polymer inside the screen 27 in the space of the drain outlet 26, the moisture is liquid and the volatile matter is gas. It is picked up through a narrow gap constituting the screen and can be discharged out of the dewatering barrel 20.
[0009]
【The invention's effect】
It has a configuration as described above, and the conventional dewatering barrel is a barrel body, two plates provided so that the barrel body is sandwiched between both end surfaces of the barrel body, and the barrel through the spacer. Since it is a dewatering barrel in which a stepped portion for positioning the screen is provided at the outlet provided in the barrel body and the bolt connecting the two plates, when replacing due to damage of the dewatering barrel, only the barrel body, Alternatively, it is only necessary to replace a damaged member such as a plate at both ends, and the replacement is simple and inexpensive. Further, since the stepped portion is provided for positioning for mounting the screen, it is possible to eliminate the inconvenience that the barrel inner surface into which the screw is inserted and the screen inner surface are different.
[Brief description of the drawings]
FIG. 1 is a front view of a dewatering barrel according to an embodiment of the present invention.
FIG. 2 is a side view of FIG. 1 showing one embodiment of the present invention.
FIG. 3 is an explanatory view of a twin-screw extruder having a barrel in which a plurality of conventional divided barrels are integrally connected.
4 is a conventional explanatory view, and is an AA cross-sectional enlarged view of FIG. 3;
[Explanation of symbols]
20 Dewatering barrel 21 Barrel body 22, 23 Plate 24 Spacer 25 Bolt 26 Drain port 27 Screen

Claims (1)

高含水ポリマを受け入れるフィードバレル部材と、
前記フィードバレル部材で受入れた高含水ポリマから脱水した水を排水する排水口を設けた脱水バレル部材と、
前記フィードバレル部材と前記脱水バレル部材の他、複数個の分割されている各種のバレル部材を一体的に連結して組み立て、高含水ポリマを供給し低含水ポリマとして押出す２軸押出機の組立式脱水バレルにおいて、
前記脱水バレル部材は、前記排水口を塞ぎ、かつ溶融された高含水ポリマから水分および揮発分を漉して機体外へ排出するスクリーンと、
このスクリーンを取付けるための段付部を設けた脱水バレル本体と、
同脱水バレル本体の軸方向の両端部から前記脱水バレル本体を挟むようにスペーサを介して前記脱水バレル本体越しにボルトで取付けた２枚の板と、
を有して構成したことを特徴とする２軸押出機の組立式脱水バレル。A feed barrel member for receiving a high water content polymer;
A dewatering barrel member provided with a drain outlet for draining water dehydrated from the high water content polymer received by the feed barrel member ;
Another of the dewatering barrel member and the feed barrel member, assembled integrally connected various barrel member being a plurality of split, assembly of extruded biaxial extruder as low moisture polymer supplying high moisture polymer In the dehydration barrel
The dewatering barrel member is a screen that closes the drain and removes moisture and volatile matter from the molten high water content polymer and discharges it to the outside of the aircraft ,
A dehydrating barrel body provided with a stepped portion for mounting the screen ;
Two and a plate mounted with bolts to the dewatering barrel body over via a spacer so as to sandwich the dewatering barrel body from both ends of the axial direction of the dewatering barrel body,
An assembly-type dewatering barrel for a twin-screw extruder, characterized by comprising:
JP03996297A 1997-02-07 1997-02-07 Assembled dewatering barrel Expired - Lifetime JP3680887B2 (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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JPH10217311A JPH10217311A (en) 1998-08-18
JP3680887B2 true JP3680887B2 (en) 2005-08-10

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JP6867125B2 (en) * 2016-08-25 2021-04-28 日本製紙クレシア株式会社 Moisture-related waste plastic pellet molding equipment
JP6337078B1 (en) * 2016-12-22 2018-06-06 株式会社タジリ Waste compression molding machine
KR20210063643A (en) * 2019-11-25 2021-06-02 주식회사 엘지화학 Extruder

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