机械外文翻译文献翻译一个简化双螺杆旋转食品挤压机：设计，制造和检验

A simplified twin screw co-rotating food extruder: design, fabrication and testingS.A.M.A.N.S. Senan

机械专业中英文文献翻译 Asimplified twin screw co-rotating food extruder: design, fabrication and testing S.A.M.A.N.S. Senanayake a, B. Clarke b,* Division of Agricultural and Plantation Engineering, The Open University of Sri Lanka, Nawala, Nugegoda, Sri Lanka Department of Postharvest Technology, School of Agriculture, Food and Environment, Silsoe Collage, Cranfield University, Silsoe, Bedfordshire MK45 4DT,UK Received 6July 1998; accepted 10 February 1999 Abstract Asimplified co-rotating twin screw food extruder was designed, fabricated and tested in England, followed by extensive testing in Sri Lanka. It was built as amodel to meet the specific product and financial constraints of less developed countries and was expected to be used in those countries to widen the production capabilities of extruded foods. The machine had an estimated delivery of 10 kg/h and was made mainly with mild steel. Two types of screw were made, one with aconstant pitch of 14 mm and the other with varying pitch in segments of 14, 12 and 10 mm. The machine was powered by a2.2 kW electric motor with electronic speed control .The machine also had electrical heating with atemperature controller and apressure sensing device. The cost of fabrication of the machine was estimated at £2000 with most of the parts built in afairly simple workshop. Amixture of rice and dried banana was successfully extruded as apotential snack food and on the basis of maximum expansion the best results was obtained from abarrel temperature of 120°C, screw speed 125 rpm, feed moisture 15% and with adie orifice size of 3mm. When the alternative compress ion screw was tested very similar results were achieved with no significant improvement in product expansion. ©1999 Elsevier Science Ltd. All rights reserved. Keywords: Twin screw extruder; Design; Low cost; Snack food; Continuous cooker; Local construction; Cereal mixtures Nomenclature aDie diameter (mm) BChannel width (mm) CScrew circumference (mm) dScrew core diameter DOuter diameter of screws (mm)