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Development and Modification of BRRI Winnower

Dr. Muhammad Abdur Rahman
Chief Scientific Officer and Head
Farm Machinery and Postharvest Technology Division, Bangladesh Rice Research Institute, Gazipur-1701

Subrata Paul
Scientific Officer
Farm Machinery and Postharvest Technology Division, Bangladesh Rice Research Institute, Gazipur-1701

Bidhan Chandra Nath
Senior Scientific Officer
Farm Machinery and Postharvest Technology Division, Bangladesh Rice Research Institute, Gazipur-1701

Md Kamruzzaman
Senior Scientific Officer
Farm Machinery and Postharvest Technology Division, Bangladesh Rice Research Institute, Gazipur-1701

Abstract/ Executive Summary:

Existing BRRI Winnower was modified to improve the performance of the machine. A 4 hp diesel engine was replaced by electric motor. The winnowing capacity of the modified winnower was 550-600 kg/hr (paddy) which was higher than the existing BRRI winnower. Cleaning efficiency and operation costs of modified winnower was found same as previous winnower.

Keywords: Winnower, Winnowing capacity, Cleaning efficiency, Paddy

Location: BRRI research workshop, Gazipur

Start Date: 00-07-2011

End Date: 00-06-2012

Program Area: Farm Mechanization

Commodity: Winnower

Objectives:

To develop higher capacity winnower over than the existing BRRI winnower

Methodology:

For development: • Engine (4hp), V-pulley, MS sheet, flat bar, Nuts and Bolts • A Prototype was fabricated in the FMPHT divisional research workshop. Design considerations of Winnower The BRRI winnower which was operated by electric motor consists of grain hopper, blower, vibrating plate, eccentric linkage, grain screen assembly, dust sprout, wind board, sliding gate, grill etc. It was operated by a motor of 0.5hp motor power transmitted by V-belt and pulley. The design of the higher capacity engine operated winnower was same as like as existing BRRI winnower but the size and shape of the various parts of the modified winnower was bigger than the existing winnower. After considering the size and shape the prototype was fabricated in FMPHT divisional research workshop. During design, the following criteria were collected: • Ease of operations • Reducing vibration • Higher Capacity Performance test of the modified winnower • Capacity (kg/hr) • Cleaning efficiency (%) • Fuel consumption (liter/hr)

Source of Information: Proceedings of the BRRI Annual Internal Review for 2011-12, BRRI, Gazipur-1701, Bangladesh

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The winnowing capacity of the modified winnower was 550-600 kg/hr which was higher than the existing BRRI winnower. Cleaning efficiency and operation costs of modified winnower was found same as previous winnower.

Knowledge Management: Report/Proceedings