特点及用途

SJSZ系列锥形双螺杆挤出机，配以相应的模具和辅机，可将各种热塑性塑料特别是硬聚氯乙烯粉料直接挤出成管、板、片、膜及异型材等，也可完成对各种塑料的改性及粉料造粒过程，本机采用交流电机，可控无级调速，设有过载保护和故障报警，螺杆芯部油循环，机筒油冷却，并装有真空排气装置和定量喂料装置。

本机主要供挤出软、硬聚氯乙烯、聚乙烯等热塑性塑料之用，它与相应的辅机（包括成型机头）配合，可加工多种塑料制品，如膜、管、板、丝、带、电缆绝缘层及中空制品等，亦可用于造粒。本机设计先进，产量高，塑化好，能耗低，采用硬齿面齿轮传动，具有噪音低，运转平稳，承载力大，寿命长等特点。

双螺杆挤出机由驱动部分与加工部分组成。
◇驱动部分包括传动箱与电机。根据机型特点，交流电机及直流电机可供选择。传动箱采用平行三轴式结构，具有液位计低油位报警、过滤阻塞超压报警的功能。
◇加工部分由两根同向旋转的螺杆芯轴、螺杆元件、筒体组成。筒体有闭合筒体、喂料筒体、排气筒体。螺杆长径比可根据加工工艺调整，螺杆元件随加工物料性能组合，可实现物料的输送、混合、塑化、剪切和脱挥。粒料、粉料、液体料可分别通过主喂料料斗、侧喂料料斗或液体计量装置加入,也可采用失重式多路喂料计量系。

*柔和的塑化设计理念，确保物料的品质。
*非常可靠有效的设计理论，保证了挤出的可靠运行。高扭矩专用驱动系统，齿、轴为高强度合金钢，渗碳、磨齿处理*新开发的螺杆，可适用于填料量很高的配方，进料保证了物料在螺杆中良好的填充度和最佳的料流分配。
*螺杆具有芯部温度调节装置及良好的料筒冷却，保证了对物料工艺温度的精确控制。
*配以不同模头，辅机，用于挤出成型各种管材，板材，异形材和软硬PVC造粒等。

Features and application

The series extruders with appropriate die-mould and auxiliary machine can directly convert thermoplastic especial PVC powder into pipe,plate,sheet.film and profile,and also provide function of modifying and pelleting.The extruders are derived by A.C motor with a thruster to steepless regulate.It is also equipped with the over-load protection and stoppage alarming system.The screw's core and the outside of barrel is cooled by circulation of oil,it includes vacuum venting and forced feeding.

This set is advanced in design,high in output,good in plasticization and low in energy consumption.The involute gear driving is characterized by low noise,stable working,big bearing capacity and long service life.This set can be used for extruding themo-plastics like soft or hard polyvinyl chlorid (PVC) and polystyrene(PE).Coordinated with the approptiate auxiliary machine (including the head of former),it can produce many kinds plastic products such as film,pipe,board,braid,beit as well as granule.

双螺杆挤出机技术参数