A Design Proposal for Butter Extraction System

Conventionally, butter is extracted by agitating dairy products, such as curd, fermented milk or fresh cream. A stirring rod is used to stir the curd or fresh cream inside a cylindrical vessel manually either using ropes or with crank assembly. This process is adopted in all the village households of agricultural communities in India and other developing countries. The process of butter extraction is also mechanized using electric motors and is being used in dairy industries where production of huge quantity of butter is involved; however, a butter extraction system suitable for household application, where less quantity of butter is produced. This will be one of the main sources of revenue for villagers. This present butter extraction method is demands huge physical work and lacks in efficiency and quality. Without standard guidelines for procedure or standard steps to follow, the present process is difficult to reiterate. The focus of this paper is to update the current manual method to electric driven butter extraction system for small-scale application. The butter churner is stirred vigorously in both front and backward directions with the electric drive, which will help in separating the butter from the cream or curd. The operation of butter extraction system is observed to be a non-linear system due to variable churning speed requirement. The main aim of this paper is to propose the design aspects, which includes electrical and mechanical design of butter extraction system to have better performance in terms of productivity rate, saving time and simplicity of use.