双螺杆磨浆机螺杆扭矩和轴向推力的测量与研究

Measurement and Study on Screw Torque and Axial Thrust of Twin Screw Pulping Extruder

对双螺杆磨浆机的螺杆扭矩、轴向推力和机筒压力进行了测量实验研究.首先,选择磁电相位差式转矩传感器、应变环式轴向推力测量方法和扩散硅式压力变送器,构建了双螺杆磨浆机的螺杆扭矩、轴向推力和机筒压力测量实验系统,在此基础上进行了实验研究,得到了双螺杆磨浆机螺杆扭矩、轴向推力、机筒压力和流量与螺杆几何参数之间的关系.分析表明:按对双螺杆磨浆机扭矩、功耗和流量影响程度由大到小排序是螺杆转速、反向螺旋螺纹扣数、反向螺棱槽宽和反向螺棱槽数等.本文的工作对合理确定螺杆设计参数、选取电机与轴承及双螺杆磨浆机构挤压模型的建立等都是有意义的.

Metrical experimental studies on screw torque,axial thrust,barrel inwall pressure of twin screw pulping extruder （TSPE） were done. At first,a measurement system for TSPE was set up by selecting a sensor of magneto-electric phaseangle difference to measure the screw torque,selecting a strain gauge ring device to measure the screw axial thrust,and selecting diffusion silicon pressure transducers to measure the barrel inwall pressure. Then ,metrical experiments were done and effect curves of screw geometric parameters on screw torque,screw axial thrust,barrel inwall pressure and flux were obtained. Analysis shows that effect degree from big to small on screw torque,power consumption and flux seguences screw rotation speed ,lead number of reverse thread, slot width in reverse flight, slot number in reverse flight etc. The work is significant for reasonable design of screw geometric parameters,selection of main motor and bearings,and extrusion modeling of twin screw pulping mechanism.