Rubbing and Grinding Collision Mechanism of Paddy Separator


The whitening movement of the Paddy Separator is compos […]

The whitening movement of the Paddy Separator is composed of the collision and rolling movement of the rice grains, which is the basic factor for the whitening of the paddy separator. The collision movement of the paddy separator is divided into three categories: the first type is the collision between the rice grain and the white roller to obtain the velocity and pressure; the second type is the velocity of the rice grains colliding with each other under a certain whitening pressure; the third type has the speed of the rice grains collides with other components in the white inner wall and the whitening chamber under a certain whitening pressure. The first type of collision is the basis of the whitening work.

Paddy separator wipes away the collision of whitening:

Type 1 collision: The impact force generated by the collision of the rice grain and the iron roller rib on the forward surface acts on the joint of the cortex and endosperm of the rice grain. The rib exerts pressure on the rice grain, creating friction between the grain layer of the grain and the rib. The impact force and the friction force form a couple, the moment is the thickness of the cortex, and the cortex is broken and peeled off.

Type 2 collision: The average rubbing off between the rice grains and the speed at which the rice grains come into contact with each other produces impact and friction, and the formation of the force causes the cortex to continue to break and be peeled off.

Type 3 collision: The grain speed is low, mainly rubbing off the residual skin layer and discharging the peeled skin layer out of the sieve drum.

Paddy separator grinding and colliding:

Type 1 collision: The collision between the rice grain and the sand blade produces an impact force, and at the same time generates centrifugal force. The combination of the two causes the rice grain layer to be wedged by the sand blade. The applied force is decomposed into the cutting force and the cutting force to complete the effect of grinding the cortex. When the rice leaves the white roller, the grinding is terminated.

Type 2 Collision: Under the action of average grinding and whitening pressure, the rice grains collide with each other at a speed lower than the line speed of the sand roller to produce a "study" effect, removing the looser part of the skin layer that has been cut by the sand blade and removing it without loosening. Small cortex.

Type 3 Collision: The collision is the same but weaker than the Class! and the casted cortex is discharged.