Design And Manufacturing Of Biomass Thresher, Mixer And Screw Press Extruder Machine

Abstract

Briquettes Are Biomass Fuels Made By Compacting Agricultural Wastes (Coffee Husk, Sugarcane Trash, Dry Leaves, Grass Etc). They Are Used As Fuel Instead Of Firewood. However In Ethiopia People Have Been Unable To Take Advantage Of The Socioeconomic And Environmental Benefits Briquettes Offer. The Existing Lever Arm And Hydraulic Press Briquetting Machines Used For Briquette Making Have Low Production Capacity And Product Quality In Densification Due To Human Force Is Used For Compression Mechanism, Because Biomass Materials Used For Briquetting Are Crushed Into Small Pieces So As To Enhance Their Workability And Compactness, But Crushing Process Using Mortar And Pestle Consumes Time And Energy, Therefore To Solve These Problems An Improved Briquetting Machine Is Required. This Project Work Is Aimed At Re-Designing And Manufacturing Of The Existing Lever Arm And Hydraulic Briquetting Presses To Replace By Improved Screw Press Briquetting Machine Which Combines Three Functions Including Crushing, Mixing And Briquetting In A Single Unit. By Eliminating Individual Machines, The Great Savings In Space, Material Handling, Time, Energy And Worker, And The Improved Efficiency Can Be Realized. The Improved Machine Has Production Capacity 180kg/Hr Continuous Briquettes With A Dimension Depending On The Diameter Of The Die And With A Better Compression Capacity . Methodology Used In The Study Is Observation, Discussion And Design The Machine Components, Developing Machine Are The Major One. Power Driven Crushing System, Mixing System And Extrusion Screw Press For Compression Replace The Manual Process In Briquette Production. It Is Hoped That T H E Machine Will Be Very Useful For Small Scale Enterprises