JPH0611159Y2 - Vent device to reduce the scattering of deaerated substances - Google Patents
Vent device to reduce the scattering of deaerated substancesInfo
- Publication number
- JPH0611159Y2 JPH0611159Y2 JP1988007918U JP791888U JPH0611159Y2 JP H0611159 Y2 JPH0611159 Y2 JP H0611159Y2 JP 1988007918 U JP1988007918 U JP 1988007918U JP 791888 U JP791888 U JP 791888U JP H0611159 Y2 JPH0611159 Y2 JP H0611159Y2
- Authority
- JP
- Japan
- Prior art keywords
- vent
- deaerated
- scattering
- resin
- substances
- 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
Links
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
【考案の詳細な説明】 「産業上の利用分野」 本考案は単軸あるいは多軸を問わず押出機のベント部に
おける脱気物の飛散を減少させるベント装置に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION "Industrial application field" The present invention relates to a vent device for reducing the scattering of deaerated substances in the vent part of an extruder regardless of whether it is a single shaft or a multi-shaft.
「従来の技術」 従来、押出機において脱気物の脱気を行うには、第2図
で示されるようにベント部8のベントゾーン4を真空とな
し樹脂内の脱気物3′をベント部8のベントゾーン4で取
り除いている。[Prior Art] Conventionally, in order to degas a degassed product in an extruder, as shown in FIG. 2, the vent zone 4 of the vent section 8 is evacuated and the degassed product 3 ′ in the resin is vented. Removed in vent zone 4 of part 8.
そしてスクリュ1にはベントゾーン4の上流にリング2な
どの形状をなした抵抗部を設け、樹脂がリング2を通過
後に一気に真空下となし、この急減圧によって脱気物
3′がベントゾーン4内でフラッシュ状となり脱気効果を
挙げている。The screw 1 is provided with a resistance part having a shape such as a ring 2 upstream of the vent zone 4, and the resin is immediately put under vacuum after passing through the ring 2, and deaerated by this sudden decompression.
3'becomes flush in the vent zone 4 and has a deaeration effect.
「考案が解決しようとする問題点」 上述のような状態でフラッシュが行われると、フラッシ
ュされた気体状の脱気物3とともに樹脂も細片状となっ
て飛散しベントゾーン4の内壁に付着する。“Problems to be solved by the device” When flushing is performed in the above-mentioned state, the resin is also scattered into small pieces along with the flushed gaseous deaerated matter 3 and adheres to the inner wall of the vent zone 4. To do.
この付着した樹脂が高温下に長時間さらされると、樹脂
の劣化や焼けを生じ、運転中にこれが落ちて製品と混じ
る。その結果品質劣化の製品となる。If the adhered resin is exposed to a high temperature for a long time, the resin deteriorates or burns, and this drops during operation and mixes with the product. As a result, the product is deteriorated in quality.
このため運転を停止しベント部8のベントカバー10を開
放して付着した樹脂を取り除いている。Therefore, the operation is stopped, and the vent cover 10 of the vent section 8 is opened to remove the adhered resin.
「問題点を解決するための手段」 本考案はこのような欠点を防止せんとするものである。"Means for Solving Problems" The present invention aims to prevent such drawbacks.
すなわち、フラッシュされた樹脂細片を含んだ脱気物は
ベントゾーン内で放射状に飛散するので、この飛散防止
のためシリンダ内壁に切欠段部を設け、前記フラッシュ
以前において樹脂を、予めこの切欠段部にてフラッシュ
させて脱気物の飛散を減少させんとするものである。That is, since the deaerated substance containing the flushed resin fine particles is scattered radially in the vent zone, a cutout step portion is provided on the inner wall of the cylinder to prevent the scattering, and the resin is preliminarily removed from the cutout step before the flush. It is intended to reduce the scattering of deaerated substances by flashing in the department.
そして現実的には、ベント部のベントゾーンの上流側部
において、スクリュを内蔵するシリンダのベントゾーン
の接続端部内面に、樹脂の飛散を防止させる切欠段部を
設けてその目的を達成する。In reality, the notch step portion for preventing the resin from scattering is provided on the inner surface of the connecting end portion of the vent zone of the cylinder containing the screw at the upstream side of the vent zone of the vent portion to achieve the purpose.
「実施例」 本考案の実施例を示す第1図において、 8はベント部、1はスクリュ、2はリング、3は脱気物、4
はベントゾーン、5は点検窓、6は切欠段部、9はシリン
ダ、9′はシリンダ9の接続端部、10はベントカバーであ
る。[Embodiment] In FIG. 1 showing an embodiment of the present invention, 8 is a vent portion, 1 is a screw, 2 is a ring, 3 is a degassed material, and 4 is
Is a vent zone, 5 is an inspection window, 6 is a notch step, 9 is a cylinder, 9'is a connecting end of the cylinder 9, and 10 is a vent cover.
樹脂はリング2を通過後切欠段部6の天井に当たり、脱気
物3を発生するが、この部で脱気物3の飛散を最少限にと
どめる。After passing through the ring 2, the resin hits the ceiling of the notched stepped portion 6 to generate deaerated matter 3, but the deaerated matter 3 is scattered to a minimum at this portion.
切欠段部6の長さbは、スクリュ1のスクリュピッチaの0.
5〜2倍、切欠段部6の深さcはスクリュピッチaの0.1〜0.
8倍が適当である。The length b of the notch step portion 6 is 0 of the screw pitch a of the screw 1.
5 to 2 times, the depth c of the notch step 6 is 0.1 to 0 of the screw pitch a.
8 times is appropriate.
この空間を大きく取り過ぎると、飛散した樹脂は更新さ
れず滞留物となってしまう。If this space is taken too large, the scattered resin will not be renewed and will remain as stagnant material.
またリング2からベント上流側の壁までの長さdは樹脂圧
を保つため切欠段部6の長さbだけリングの位置を上流に
移動させることが適当である。Further, the length d from the ring 2 to the wall on the upstream side of the vent is preferably moved upstream by the length b of the notch step 6 in order to maintain the resin pressure.
「考案の効果」 本考案においてはスクリュのシリンダのベントゾーンへ
の接続端部内面に切欠段部を設け、フラッシングを行う
に当たりここで予め樹脂を切欠段部の天井に向けてフラ
ッシュさせたので脱気物の飛散を防止することができ
る。"Effect of the device" In the present invention, a notch step is provided on the inner surface of the connecting end of the screw to the vent zone of the cylinder, and before flushing, the resin was flushed toward the ceiling of the notch step. It is possible to prevent scattering of air.
そして従来1〜3日毎に運転を停止し清浄したが本考案で
は1ケ月間清浄する必要がなくなる。Conventionally, operation was stopped every 1 to 3 days and cleaning was performed, but the present invention eliminates the need for cleaning for 1 month.
第1図は本考案装置の正面図、第2図は従来装置の正面図
である。 １……スクリュ、４……ベントゾーン、６……切欠段
部、８……ベント部、９……シリンダ、９′……シリン
ダの接続端部、10……ベントカバーFIG. 1 is a front view of the device of the present invention, and FIG. 2 is a front view of a conventional device. 1 ... screw, 4 ... vent zone, 6 ... notch step, 8 ... vent, 9 ... cylinder, 9 '... cylinder connecting end, 10 ... vent cover
Claims (1)
において、スクリュ(1)を内蔵するシリンダ(9)のベント
ゾーン(4)への接続端部(9′)内面に、長さ(b)がスクリ
ュピッチ(a)の０．５〜２倍、深さ(c)がスクリュピッチ
(a)の０．１〜０．８倍の切欠段部(6)を設けた脱気物の
飛散を減少させるベント装置。1. On the upstream side of the vent zone (4) of the vent section (8), on the inner surface of the connecting end (9 ') of the cylinder (9) containing the screw (1) to the vent zone (4). , Length (b) is 0.5 to 2 times of screw pitch (a), depth (c) is screw pitch
A vent device for reducing scattering of deaerated substances provided with a notched step portion (6) 0.1 to 0.8 times as large as that in (a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988007918U JPH0611159Y2 (en) | 1988-01-25 | 1988-01-25 | Vent device to reduce the scattering of deaerated substances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988007918U JPH0611159Y2 (en) | 1988-01-25 | 1988-01-25 | Vent device to reduce the scattering of deaerated substances |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01112926U JPH01112926U (en) | 1989-07-28 |
| JPH0611159Y2 true JPH0611159Y2 (en) | 1994-03-23 |
Family
ID=31213345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988007918U Expired - Lifetime JPH0611159Y2 (en) | 1988-01-25 | 1988-01-25 | Vent device to reduce the scattering of deaerated substances |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0611159Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4974255A (en) * | 1972-11-17 | 1974-07-17 |
-
1988
- 1988-01-25 JP JP1988007918U patent/JPH0611159Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4974255A (en) * | 1972-11-17 | 1974-07-17 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01112926U (en) | 1989-07-28 |
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