单螺杆食品挤出机

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1、摘要针对设计要求，对单螺杆食品挤出机进行了设计。主要包括传动系统、挤出系统、加料系统、冷却和加热系统的设计。此单螺杆挤出机是通过电机将动力传给带轮，经减速传给螺杆，为了满足变速范围的要求，采用普通电机加变频器进行无级调速。为了便于安装和拆卸，机筒采用的是左右剖分式结构，分三段进行加热和冷却。通过电磁阀和传感器进行温度的控制和冷却水的进出，保证温度在所允许的范围内。关键词：单螺杆；挤出机；剖分式39AbstractAccordingtothedesignrequirement,thesinglescrewfoodextruderisdesign

2、ed.Mainlycomprisesatransmissionsystem,extrusionsystem,feedingsystem,thecoolingandheatingsystemdesign.Thesinglescrewextruderisthroughthemotortransmitspowertothebeltwheelthroughaspeedreducer,transmittedtoascrew,inordertomeettherequirementsofspeedrange,thecommonmotorwithfreque

3、ncyconverterforsteplessspeedregulation.Inordertofacilitatetheinstallationanddisassembly,barrelisbasedaroundasplitstructure,isdividedintothreepartsforheatingandcooling.Throughanelectromagneticvalveandasensorfortemperaturecontrolandcoolingwaterimport,ensurethetemperatureinthe

4、allowedrange.Keywordsingle-screw；extruder；split39目录摘要IABSTRACTII第1章绪论11.1研究的意义11.2挤压技术的发展11.3国内外发展的现状21.4挤压加工的原理3第2章方案设计52.1设计的要求52.2方案设计部分52.2.1方案的整体确定52.2.2机筒与螺杆材料的选择6第3章设计计算83.1传动系统设计83.1.1电机的选择83.1.2传动比的分配83.2螺杆的设计103.3齿轮的设计143.3.1输入轴上齿轮的设计.......143.3.2Ⅱ轴Ⅲ轴上一对齿轮的设计183.

5、3.3计算输出轴上的小齿轮233.4轴的计算273.5带轮计算283.5.1确定计算功率283.5.2选窄V带带型293.5.3确定带轮的基准直径29393.5.4确定窄V带的基准长度和中心距293.5.5包角303.5.6计算根数303.6轴的校核30第4章冷却装置354.1水冷354.2风冷35结论37致谢38参考文献3939CONTENTSABSTRACTIICHAPTER1INTRODUCTION11.1SignificanceoftheResearch11.2Extrusiontechnology,thedevelopment11.

6、3Domesticandinternationaldevelopmentstatus21.4Theprincipleoftheextrusionprocess3CHAPTER2DESIGN52.1DesignRequirement52.2DesignPart52.2.1programasawholetodeterminethe52.2.2barrelandscrewmaterialtoselectsix6CHAPTER3DESIGNCALCULATIONS83.1TransmissionSystemDesign83.1.1MotorSelec

7、tion83.1.2Transmissionratiodistribution83.2Screw103.3Geardesign143.3.1Esignoftheinputshaftgear143.3.2IIshaftⅢaxis20ofapairofgeardesign193.3.3Calculatetheoutputshaftofthepinion233.4Axiscalculation273.5Pulleycalculation283.5.1Todeterminethecomputingpowerof283.5.2Theselectedna

8、rrowV-beltwithatype293.5.3Todeterminethereferencediameterpulley293.5.4Todeterminet