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湖南工業(yè)大學(xué)本科畢業(yè)設(shè)計(jì)（論文）
摘 要
本文是關(guān)于工業(yè)用塑料聚合物雙螺桿擠出機(jī)的設(shè)計(jì)。在工業(yè)上和實(shí)驗(yàn)室中，單螺桿和雙螺桿擠出機(jī)都應(yīng)用極其普遍，是塑料加工設(shè)備的重要元部件之一。作為工業(yè)中使用的雙螺桿擠出機(jī)，在設(shè)計(jì)過(guò)程中，除了要求能夠完成固體輸送、增壓、熔融、熔體輸送和泵壓等一系列通用過(guò)程以外，還要求涉及到復(fù)合塑料與聚合物顆粒之間的混合，以及物料喂料量的控制。物料喂料量的控制則是通過(guò)控制主螺桿及其輔助喂料螺桿的轉(zhuǎn)速來(lái)完成的。同時(shí)，雙螺桿擠出機(jī)具有分布混合和分散混合效果良好、自潔作用較強(qiáng)、可實(shí)現(xiàn)高速運(yùn)轉(zhuǎn)、產(chǎn)量高等特點(diǎn)，特別適合聚合物的改性，如共混、填料、增強(qiáng)及反應(yīng)擠出。有利于增加擠出機(jī)的擠出產(chǎn)量，提高塑化質(zhì)量。
關(guān)鍵詞：雙螺桿擠出機(jī)；塑料；同向嚙合
1
湖南工業(yè)大學(xué)2010屆本科畢業(yè)設(shè)計(jì)（論文）
ABSTRACT
This paper is about the design of plastic polymer single-screw extruder that used in industry.The single-screw extruder is extensively used in the fields of industry and experiment,and it is one of the important units of polymer processing equipment.As a single-screw extruder used in industry,it requires to complete a series of general process such as transportation of solid,increase of pressure,melt,transportation of melt.Besides,it refers to mix the composite plastics and polymer grain,and the control of the material feed quantity.These are the innovations in this design.On the base of the design of common single-screw extruder,i increased two auxiliary feed screws which are used to transportate materials of composite plastics and used it to mix kinds of plastics.The control of the quantity of material feed is done by the control of the chief screw and the speed of auxiliary feed screws.Meanwhile,i used twin wedge-shaped thread section in the design of screw thread section.This is good to increase the outcome of the extruder, and to improve the quality of plasticity comparing with common tectangular thread section.
Keyword: Single-screw Extruder; plastics; Industry