Peanut Shelling Machine Principle

Husking by Rubbing: Rubbing and husking is the use of relatively rotating rubber rollers for rubbing and husking of the kernels. The two rubber rollers are placed horizontally and rotated at different speeds respectively. There is a certain linear speed difference between the roller surfaces. The rubber rollers have a certain elasticity. Its friction coefficient is large. When the peanut pod enters the working area of the rubber roller, it comes into contact with the two roller surfaces. If the pod meets the conditions of being pinched by the roller, that is, the angle of the rodent is smaller than the friction angle, it can enter the two rollers smoothly. At this time, the pod is pulled by the friction force of two different directions while being pulled between the rollers; in addition, the pod is also subjected to the normal pressing force of the two roller surfaces, and when the pod reaches the vicinity of the center line of the roller At this time, the normal squeezing force is the largest, and the pod is compressed to produce elasticity—plastic deformation. At this time, the pod’s shell will also rupture under the action of compression, and the hulling process is completed under the action of the above-mentioned opposite direction tearing force. Factors affecting hulling performance include line speed difference, rubber roll hardness, roll-in angle, roll radius, gap between rolls, etc.