Paddy Husker Machine Operation Principle

Paddy Husker Machine Operation Principle:

When the paddy husker machine runs, we introduce rice into the hopper. The part of the rotor which is located below the hopper acts as an Archimedes screw, and "pushes" the rice to the other end of the rotor. Once some of the rice has passed into the body of the huller, it is driven by the horizontal stries of the central part of the rotor into a rotational movement.

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When the grains of the non-husked rice arrives at the knife, the space it has to move along (between the rotor and the knife) is heavily reduced. The knife opposes the rotation of grains. The chaff and the bran surrounding it then "rub" along the edge of the knife and the elevations of the rotor, leading to their separation of the grain by necking and scouring. This allows the husking of the rice. The level of scouring is set by the opening of the exit for the husked rice: the more it is closed, the more the rice is forced to stay longer in the device, which accentuates the shelling. The pieces in which the bran and the chaff are cut, are small enough to pass through the sieve.

While revolving around the rotor, the rice also advances towards the exit, driven by the rice still located in the feed hopper. Once it arrives at the exit, it can escape through an opening with a especially for this purpose created form. The position of the release is placed relatively high, which allows the last separation between the rice and the chaff which has not yet been evacuated by the sieve. The grains of the rice, because of its weight, is projected onto the exit by inertia. The lighter chaff remains in the body of the huller and continues to turn until exits through the sieve. This separation allows to not require the winnowing (separation of dust and remaining waste) of the rice produced by this paddy husker machine.

http://www.rice-mill.org/PRODUCTS/Paddy-Husker-Machine/